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/* uLisp ARM 3.2 - www.ulisp.com
David Johnson-Davies - www.technoblogy.com - 29th April 2020
Licensed under the MIT license: https://opensource.org/licenses/MIT
*/
// Lisp Library
const char LispLibrary[] PROGMEM = "";
// Compile options
// #define resetautorun
#define printfreespace
// #define printgcs
// #define sdcardsupport
// #define gfxsupport
// #define lisplibrary
#define assemblerlist
// #define lineeditor
// #define vt100
// Includes
// #include "LispLibrary.h"
#include <setjmp.h>
#include <SPI.h>
#include <Wire.h>
#include <limits.h>
#if defined(gfxsupport)
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#define COLOR_WHITE 0xffff
#define COLOR_BLACK 0
// Adafruit PyBadge/PyGamer
#define TFT_CS 44 // Chip select
#define TFT_RST 46 // Display reset
#define TFT_DC 45 // Display data/command select
#define TFT_BACKLIGHT 47 // Display backlight pin
#define TFT_MOSI 41 // Data out
#define TFT_SCLK 42 // Clock out
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);
#endif
#if defined(sdcardsupport)
#include <SD.h>
#define SDSIZE 172
#else
#define SDSIZE 0
#endif
// C Macros
#define nil NULL
#define car(x) (((object *) (x))->car)
#define cdr(x) (((object *) (x))->cdr)
#define first(x) (((object *) (x))->car)
#define second(x) (car(cdr(x)))
#define cddr(x) (cdr(cdr(x)))
#define third(x) (car(cdr(cdr(x))))
#define push(x, y) ((y) = cons((x),(y)))
#define pop(y) ((y) = cdr(y))
#define integerp(x) ((x) != NULL && (x)->type == NUMBER)
#define floatp(x) ((x) != NULL && (x)->type == FLOAT)
#define symbolp(x) ((x) != NULL && (x)->type == SYMBOL)
#define stringp(x) ((x) != NULL && (x)->type == STRING)
#define characterp(x) ((x) != NULL && (x)->type == CHARACTER)
#define arrayp(x) ((x) != NULL && (x)->type == ARRAY)
#define streamp(x) ((x) != NULL && (x)->type == STREAM)
#define mark(x) (car(x) = (object *)(((uintptr_t)(car(x))) | MARKBIT))
#define unmark(x) (car(x) = (object *)(((uintptr_t)(car(x))) & ~MARKBIT))
#define marked(x) ((((uintptr_t)(car(x))) & MARKBIT) != 0)
#define MARKBIT 1
#define setflag(x) (Flags = Flags | 1<<(x))
#define clrflag(x) (Flags = Flags & ~(1<<(x)))
#define tstflag(x) (Flags & 1<<(x))
// Code marker stores start and end of code block
#define startblock(x) ((x->integer) & 0xFFFF)
#define endblock(x) ((x->integer) >> 16 & 0xFFFF)
// Constants
const int TRACEMAX = 3; // Number of traced functions
enum type { ZZERO=0, SYMBOL=2, CODE=4, NUMBER=6, STREAM=8, CHARACTER=10, FLOAT=12, ARRAY=14, STRING=16, PAIR=18 }; // ARRAY STRING and PAIR must be last
enum token { UNUSED, BRA, KET, QUO, DOT };
enum stream { SERIALSTREAM, I2CSTREAM, SPISTREAM, SDSTREAM, STRINGSTREAM, GFXSTREAM };
enum function { NIL, TEE, NOTHING, OPTIONAL, INITIALELEMENT, AMPREST, LAMBDA, LET, LETSTAR, CLOSURE,
SPECIAL_FORMS, QUOTE, DEFUN, DEFVAR, SETQ, LOOP, RETURN, PUSH, POP, INCF, DECF, SETF, DOLIST, DOTIMES,
TRACE, UNTRACE, FORMILLIS, WITHOUTPUTTOSTRING, WITHSERIAL, WITHI2C, WITHSPI, WITHSDCARD, WITHGFX, DEFCODE,
TAIL_FORMS, PROGN, IF, COND, WHEN, UNLESS, CASE, AND, OR, FUNCTIONS, NOT, NULLFN, CONS, ATOM, LISTP,
CONSP, SYMBOLP, ARRAYP, BOUNDP, SETFN, STREAMP, EQ, CAR, FIRST, CDR, REST, CAAR, CADR, SECOND, CDAR, CDDR,
CAAAR, CAADR, CADAR, CADDR, THIRD, CDAAR, CDADR, CDDAR, CDDDR, LENGTH, ARRAYDIMENSIONS, LIST, MAKEARRAY,
REVERSE, NTH, AREF, ASSOC, MEMBER, APPLY, FUNCALL, APPEND, MAPC, MAPCAR, MAPCAN, ADD, SUBTRACT, MULTIPLY,
DIVIDE, MOD, ONEPLUS, ONEMINUS, ABS, RANDOM, MAXFN, MINFN, NOTEQ, NUMEQ, LESS, LESSEQ, GREATER, GREATEREQ,
PLUSP, MINUSP, ZEROP, ODDP, EVENP, INTEGERP, NUMBERP, FLOATFN, FLOATP, SIN, COS, TAN, ASIN, ACOS, ATAN,
SINH, COSH, TANH, EXP, SQRT, LOG, EXPT, CEILING, FLOOR, TRUNCATE, ROUND, CHAR, CHARCODE, CODECHAR,
CHARACTERP, STRINGP, STRINGEQ, STRINGLESS, STRINGGREATER, SORT, STRINGFN, CONCATENATE, SUBSEQ,
READFROMSTRING, PRINCTOSTRING, PRIN1TOSTRING, LOGAND, LOGIOR, LOGXOR, LOGNOT, ASH, LOGBITP, EVAL, GLOBALS,
LOCALS, MAKUNBOUND, BREAK, READ, PRIN1, PRINT, PRINC, TERPRI, READBYTE, READLINE, WRITEBYTE, WRITESTRING,
WRITELINE, RESTARTI2C, GC, ROOM, SAVEIMAGE, LOADIMAGE, CLS, PINMODE, DIGITALREAD, DIGITALWRITE,
ANALOGREAD, ANALOGWRITE, DELAY, MILLIS, SLEEP, NOTE, EDIT, PPRINT, PPRINTALL, FORMAT, REQUIRE,
LISTLIBRARY, DRAWPIXEL, DRAWLINE, DRAWRECT, FILLRECT, DRAWCIRCLE, FILLCIRCLE, DRAWROUNDRECT,
FILLROUNDRECT, DRAWTRIANGLE, FILLTRIANGLE, DRAWCHAR, SETCURSOR, SETTEXTCOLOR, SETTEXTSIZE, SETTEXTWRAP,
FILLSCREEN, SETROTATION, INVERTDISPLAY, ENDFUNCTIONS };
// Typedefs
typedef unsigned int symbol_t;
typedef struct sobject {
union {
struct {
sobject *car;
sobject *cdr;
};
struct {
unsigned int type;
union {
symbol_t name;
int integer;
int chars; // For strings
float single_float;
};
};
};
} object;
typedef object *(*fn_ptr_type)(object *, object *);
typedef int (*intfn_ptr_type)(int w, int x, int y, int z);
typedef struct {
const char *string;
fn_ptr_type fptr;
uint8_t minmax;
} tbl_entry_t;
typedef int (*gfun_t)();
typedef void (*pfun_t)(char);
typedef int PinMode;
// Workspace
#define PERSIST __attribute__((section(".text")))
#define WORDALIGNED __attribute__((aligned (4)))
#define BUFFERSIZE 34 // Number of bits+2
#define RAMFUNC __attribute__ ((section (".ramfunctions")))
#if defined(ARDUINO_ITSYBITSY_M0) || defined(ARDUINO_SAMD_FEATHER_M0_EXPRESS)
#define WORKSPACESIZE 2816-SDSIZE /* Objects (8*bytes) */
#define DATAFLASHSIZE 2048000 /* 2 MBytes */
#define SYMBOLTABLESIZE 512 /* Bytes */
#define CODESIZE 128 /* Bytes */
#define SDCARD_SS_PIN 4
#define STACKDIFF 320
#elif defined(ARDUINO_GEMMA_M0)
#define WORKSPACESIZE 2816-SDSIZE /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 512 /* Bytes */
#define CODESIZE 128 /* Bytes */
#define STACKDIFF 320
#elif defined(ARDUINO_METRO_M4) || defined(ARDUINO_ITSYBITSY_M4) || defined(ARDUINO_FEATHER_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
#define WORKSPACESIZE 20480-SDSIZE /* Objects (8*bytes) */
#define DATAFLASHSIZE 2048000 /* 2 MBytes */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 400
#elif defined(ARDUINO_GRAND_CENTRAL_M4)
#define WORKSPACESIZE 28672-SDSIZE /* Objects (8*bytes) */
#define DATAFLASHSIZE 8192000 /* 8 MBytes */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 400
#elif defined(ARDUINO_SAMD_MKRZERO)
#define WORKSPACESIZE 2816-SDSIZE /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 512 /* Bytes */
#define CODESIZE 128 /* Bytes */
#define STACKDIFF 840
#elif defined(ARDUINO_SAMD_ZERO) /* Put this last, otherwise overrides the Adafruit boards */
#define WORKSPACESIZE 2816-SDSIZE /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 512 /* Bytes */
#define CODESIZE 128 /* Bytes */
#define SDCARD_SS_PIN 10
#define STACKDIFF 320
#elif defined(_VARIANT_BBC_MICROBIT_)
#define WORKSPACESIZE 1280 /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 512 /* Bytes */
#define CODESIZE 64 /* Bytes */
#define STACKDIFF 320
#elif defined(ARDUINO_NRF52840_ITSYBITSY)
#define WORKSPACESIZE 20992-SDSIZE /* Objects (8*bytes) */
#define DATAFLASHSIZE 2048000 /* 2 MBytes */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 1200
#elif defined(ARDUINO_NRF52840_CLUE)
#define WORKSPACESIZE 19456-SDSIZE /* Objects (8*bytes) */
#define DATAFLASHSIZE 2048000 /* 2 MBytes */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 0
#elif defined(MAX32620)
#define WORKSPACESIZE 24576-SDSIZE /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 320
#elif defined(ARDUINO_FEATHER_F405)
#define WORKSPACESIZE 11840-SDSIZE /* Objects (8*bytes) */
#define SYMBOLTABLESIZE 1024 /* Bytes */
#define CODESIZE 256 /* Bytes */
#define STACKDIFF 320
#endif
object Workspace[WORKSPACESIZE] WORDALIGNED;
char SymbolTable[SYMBOLTABLESIZE];
RAMFUNC uint8_t MyCode[CODESIZE] WORDALIGNED;
// Global variables
jmp_buf exception;
unsigned int Freespace = 0;
object *Freelist;
char *SymbolTop = SymbolTable;
unsigned int I2CCount;
unsigned int TraceFn[TRACEMAX];
unsigned int TraceDepth[TRACEMAX];
object *GlobalEnv;
object *GCStack = NULL;
object *GlobalString;
int GlobalStringIndex = 0;
uint8_t PrintCount = 0;
uint8_t BreakLevel = 0;
char LastChar = 0;
char LastPrint = 0;
// Flags
enum flag { PRINTREADABLY, RETURNFLAG, ESCAPE, EXITEDITOR, LIBRARYLOADED, NOESC };
volatile char Flags = 0b00001; // PRINTREADABLY set by default
// Forward references
object *tee;
object *tf_progn (object *form, object *env);
object *eval (object *form, object *env);
object *read (gfun_t gfun);
void repl (object *env);
void printobject (object *form, pfun_t pfun);
char *lookupbuiltin (symbol_t name);
intptr_t lookupfn (symbol_t name);
int builtin (char* n);
// Error handling
void errorsub (symbol_t fname, PGM_P string) {
pfl(pserial); pfstring(PSTR("Error: "), pserial);
if (fname) {
pserial('\'');
pstring(symbolname(fname), pserial);
pfstring(PSTR("' "), pserial);
}
pfstring(string, pserial);
}
void error (symbol_t fname, PGM_P string, object *symbol) {
errorsub(fname, string);
pfstring(PSTR(": "), pserial); printobject(symbol, pserial);
pln(pserial);
GCStack = NULL;
longjmp(exception, 1);
}
void error2 (symbol_t fname, PGM_P string) {
errorsub(fname, string);
pln(pserial);
GCStack = NULL;
longjmp(exception, 1);
}
// Save space as these are used multiple times
const char notanumber[] PROGMEM = "argument is not a number";
const char notastring[] PROGMEM = "argument is not a string";
const char notalist[] PROGMEM = "argument is not a list";
const char notasymbol[] PROGMEM = "argument is not a symbol";
const char notproper[] PROGMEM = "argument is not a proper list";
const char toomanyargs[] PROGMEM = "too many arguments";
const char toofewargs[] PROGMEM = "too few arguments";
const char noargument[] PROGMEM = "missing argument";
const char nostream[] PROGMEM = "missing stream argument";
const char overflow[] PROGMEM = "arithmetic overflow";
const char invalidarg[] PROGMEM = "invalid argument";
const char invalidpin[] PROGMEM = "invalid pin";
const char resultproper[] PROGMEM = "result is not a proper list";
const char oddargs[] PROGMEM = "odd number of arguments";
// Set up workspace
void initworkspace () {
Freelist = NULL;
for (int i=WORKSPACESIZE-1; i>=0; i--) {
object *obj = &Workspace[i];
car(obj) = NULL;
cdr(obj) = Freelist;
Freelist = obj;
Freespace++;
}
}
object *myalloc () {
if (Freespace == 0) error2(0, PSTR("no room"));
object *temp = Freelist;
Freelist = cdr(Freelist);
Freespace--;
return temp;
}
inline void myfree (object *obj) {
car(obj) = NULL;
cdr(obj) = Freelist;
Freelist = obj;
Freespace++;
}
// Make each type of object
object *number (int n) {
object *ptr = myalloc();
ptr->type = NUMBER;
ptr->integer = n;
return ptr;
}
object *makefloat (float f) {
object *ptr = myalloc();
ptr->type = FLOAT;
ptr->single_float = f;
return ptr;
}
object *character (char c) {
object *ptr = myalloc();
ptr->type = CHARACTER;
ptr->integer = c;
return ptr;
}
object *cons (object *arg1, object *arg2) {
object *ptr = myalloc();
ptr->car = arg1;
ptr->cdr = arg2;
return ptr;
}
object *symbol (symbol_t name) {
object *ptr = myalloc();
ptr->type = SYMBOL;
ptr->name = name;
return ptr;
}
object *codehead (int entry) {
object *ptr = myalloc();
ptr->type = CODE;
ptr->integer = entry;
return ptr;
}
object *newsymbol (symbol_t name) {
for (int i=WORKSPACESIZE-1; i>=0; i--) {
object *obj = &Workspace[i];
if (obj->type == SYMBOL && obj->name == name) return obj;
}
return symbol(name);
}
object *stream (unsigned char streamtype, unsigned char address) {
object *ptr = myalloc();
ptr->type = STREAM;
ptr->integer = streamtype<<8 | address;
return ptr;
}
// Garbage collection
void markobject (object *obj) {
MARK:
if (obj == NULL) return;
if (marked(obj)) return;
object* arg = car(obj);
unsigned int type = obj->type;
mark(obj);
if (type >= PAIR || type == ZZERO) { // cons
markobject(arg);
obj = cdr(obj);
goto MARK;
}
if (type == ARRAY) {
obj = cdr(obj);
goto MARK;
}
if (type == STRING) {
obj = cdr(obj);
while (obj != NULL) {
arg = car(obj);
mark(obj);
obj = arg;
}
}
}
void sweep () {
Freelist = NULL;
Freespace = 0;
for (int i=WORKSPACESIZE-1; i>=0; i--) {
object *obj = &Workspace[i];
if (!marked(obj)) myfree(obj); else unmark(obj);
}
}
void gc (object *form, object *env) {
#if defined(printgcs)
int start = Freespace;
#endif
markobject(tee);
markobject(GlobalEnv);
markobject(GCStack);
markobject(form);
markobject(env);
sweep();
#if defined(printgcs)
pfl(pserial); pserial('{'); pint(Freespace - start, pserial); pserial('}');
#endif
}
// Compact image
void movepointer (object *from, object *to) {
for (int i=0; i<WORKSPACESIZE; i++) {
object *obj = &Workspace[i];
unsigned int type = (obj->type) & ~MARKBIT;
if (marked(obj) && (type >= ARRAY || type==ZZERO)) {
if (car(obj) == (object *)((uintptr_t)from | MARKBIT))
car(obj) = (object *)((uintptr_t)to | MARKBIT);
if (cdr(obj) == from) cdr(obj) = to;
}
}
// Fix strings
for (int i=0; i<WORKSPACESIZE; i++) {
object *obj = &Workspace[i];
if (marked(obj) && ((obj->type) & ~MARKBIT) == STRING) {
obj = cdr(obj);
while (obj != NULL) {
if (cdr(obj) == to) cdr(obj) = from;
obj = (object *)((uintptr_t)(car(obj)) & ~MARKBIT);
}
}
}
}
uintptr_t compactimage (object **arg) {
markobject(tee);
markobject(GlobalEnv);
markobject(GCStack);
object *firstfree = Workspace;
while (marked(firstfree)) firstfree++;
object *obj = &Workspace[WORKSPACESIZE-1];
while (firstfree < obj) {
if (marked(obj)) {
car(firstfree) = car(obj);
cdr(firstfree) = cdr(obj);
unmark(obj);
movepointer(obj, firstfree);
if (GlobalEnv == obj) GlobalEnv = firstfree;
if (GCStack == obj) GCStack = firstfree;
if (*arg == obj) *arg = firstfree;
while (marked(firstfree)) firstfree++;
}
obj--;
}
sweep();
return firstfree - Workspace;
}
// Make SD card filename
char *MakeFilename (object *arg) {
char *buffer = SymbolTop;
int max = maxbuffer(buffer);
int i = 0;
do {
char c = nthchar(arg, i);
if (c == '\0') break;
buffer[i++] = c;
} while (i<max);
buffer[i] = '\0';
return buffer;
}
// Save-image and load-image
#if defined(sdcardsupport)
void SDWriteInt (File file, int data) {
file.write(data & 0xFF); file.write(data>>8 & 0xFF);
file.write(data>>16 & 0xFF); file.write(data>>24 & 0xFF);
}
#elif defined(DATAFLASHSIZE)
// Winbond DataFlash support for Adafruit M4 Express boards
#define PAGEPROG 0x02
#define READSTATUS 0x05
#define READDATA 0x03
#define WRITEENABLE 0x06
#define BLOCK64K 0xD8
#define READID 0x90
// Arduino pins used for dataflash
#if defined(ARDUINO_ITSYBITSY_M0)
const int sck = 38, ssel = 39, mosi = 37, miso = 36;
#elif defined(EXTERNAL_FLASH_USE_QSPI)
const int sck = PIN_QSPI_SCK, ssel = PIN_QSPI_CS, mosi = PIN_QSPI_IO0, miso = PIN_QSPI_IO1;
#endif
boolean FlashSetup () {
uint8_t manID, devID;
digitalWrite(ssel, HIGH); pinMode(ssel, OUTPUT);
pinMode(sck, OUTPUT);
pinMode(mosi, OUTPUT);
pinMode(miso, INPUT);
digitalWrite(sck, LOW); digitalWrite(mosi, HIGH);
digitalWrite(ssel, LOW);
FlashWrite(READID);
for(uint8_t i=0; i<4; i++) manID = FlashRead();
devID = FlashRead();
digitalWrite(ssel, HIGH);
return (devID == 0x14 || devID == 0x15 || devID == 0x16); // Found correct device
}
inline void FlashWrite (uint8_t data) {
shiftOut(mosi, sck, MSBFIRST, data);
}
void FlashBusy () {
digitalWrite(ssel, 0);
FlashWrite(READSTATUS);
while (FlashRead() & 1 != 0);
digitalWrite(ssel, 1);
}
void FlashWriteEnable () {
digitalWrite(ssel, 0);
FlashWrite(WRITEENABLE);
digitalWrite(ssel, 1);
}
void FlashBeginRead () {
FlashBusy();
digitalWrite(ssel, 0);
FlashWrite(READDATA);
FlashWrite(0); FlashWrite(0); FlashWrite(0);
}
inline uint8_t FlashRead () {
int data;
return shiftIn(miso, sck, MSBFIRST);
}
inline void FlashEndRead(void) {
digitalWrite(ssel, 1);
}
void FlashBeginWrite (int blocks) {
// Erase 64K
for (int b=0; b<blocks; b++) {
FlashWriteEnable();
digitalWrite(ssel, 0);
FlashWrite(BLOCK64K);
FlashWrite(b); FlashWrite(0); FlashWrite(0);
digitalWrite(ssel, 1);
FlashBusy();
}
}
inline uint8_t FlashReadByte () {
return FlashRead();
}
void FlashWriteByte (uint32_t *addr, uint8_t data) {
// New page
if (((*addr) & 0xFF) == 0) {
digitalWrite(ssel, 1);
FlashBusy();
FlashWriteEnable();
digitalWrite(ssel, 0);
FlashWrite(PAGEPROG);
FlashWrite((*addr)>>16);
FlashWrite((*addr)>>8);
FlashWrite(0);
}
FlashWrite(data);
(*addr)++;
}
inline void FlashEndWrite (void) {
digitalWrite(ssel, 1);
FlashBusy();
}
void FlashWriteInt (uint32_t *addr, int data) {
FlashWriteByte(addr, data & 0xFF); FlashWriteByte(addr, data>>8 & 0xFF);
FlashWriteByte(addr, data>>16 & 0xFF); FlashWriteByte(addr, data>>24 & 0xFF);
}
#endif
int saveimage (object *arg) {
unsigned int imagesize = compactimage(&arg);
#if defined(sdcardsupport)
SD.begin(SDCARD_SS_PIN);
File file;
if (stringp(arg)) {
file = SD.open(MakeFilename(arg), O_RDWR | O_CREAT | O_TRUNC);
arg = NULL;
} else if (arg == NULL || listp(arg)) file = SD.open("ULISP.IMG", O_RDWR | O_CREAT | O_TRUNC);
else error(SAVEIMAGE, PSTR("illegal argument"), arg);
if (!file) error2(SAVEIMAGE, PSTR("problem saving to SD card"));
SDWriteInt(file, (uintptr_t)arg);
SDWriteInt(file, imagesize);
SDWriteInt(file, (uintptr_t)GlobalEnv);
SDWriteInt(file, (uintptr_t)GCStack);
#if SYMBOLTABLESIZE > BUFFERSIZE
SDWriteInt(file, (uintptr_t)SymbolTop);
for (int i=0; i<SYMBOLTABLESIZE; i++) file.write(SymbolTable[i]);
#endif
for (int i=0; i<CODESIZE; i++) file.write(MyCode[i]);
for (unsigned int i=0; i<imagesize; i++) {
object *obj = &Workspace[i];
SDWriteInt(file, (uintptr_t)car(obj));
SDWriteInt(file, (uintptr_t)cdr(obj));
}
file.close();
return imagesize;
#elif defined(DATAFLASHSIZE)
if (!(arg == NULL || listp(arg))) error(SAVEIMAGE, PSTR("illegal argument"), arg);
if (!FlashSetup()) error2(SAVEIMAGE, PSTR("no DataFlash found."));
// Save to DataFlash
int bytesneeded = 20 + SYMBOLTABLESIZE + CODESIZE + imagesize*8;
if (bytesneeded > DATAFLASHSIZE) error(SAVEIMAGE, PSTR("image size too large"), number(imagesize));
uint32_t addr = 0;
FlashBeginWrite((bytesneeded+65535)/65536);
FlashWriteInt(&addr, (uintptr_t)arg);
FlashWriteInt(&addr, imagesize);
FlashWriteInt(&addr, (uintptr_t)GlobalEnv);
FlashWriteInt(&addr, (uintptr_t)GCStack);
#if SYMBOLTABLESIZE > BUFFERSIZE
FlashWriteInt(&addr, (uintptr_t)SymbolTop);
for (int i=0; i<SYMBOLTABLESIZE; i++) FlashWriteByte(&addr, SymbolTable[i]);
#endif
for (int i=0; i<CODESIZE; i++) FlashWriteByte(&addr, MyCode[i]);
for (unsigned int i=0; i<imagesize; i++) {
object *obj = &Workspace[i];
FlashWriteInt(&addr, (uintptr_t)car(obj));
FlashWriteInt(&addr, (uintptr_t)cdr(obj));
}
FlashEndWrite();
return imagesize;
#else
(void) arg;
error2(SAVEIMAGE, PSTR("not available"));
return 0;
#endif
}
#if defined(sdcardsupport)
int SDReadInt (File file) {
uintptr_t b0 = file.read(); uintptr_t b1 = file.read();
uintptr_t b2 = file.read(); uintptr_t b3 = file.read();
return b0 | b1<<8 | b2<<16 | b3<<24;
}
#elif defined(DATAFLASHSIZE)
int FlashReadInt () {
uint8_t b0 = FlashReadByte(); uint8_t b1 = FlashReadByte();
uint8_t b2 = FlashReadByte(); uint8_t b3 = FlashReadByte();
return b0 | b1<<8 | b2<<16 | b3<<24;
}
#endif
int loadimage (object *arg) {
#if defined(sdcardsupport)
SD.begin(SDCARD_SS_PIN);
File file;
if (stringp(arg)) file = SD.open(MakeFilename(arg));
else if (arg == NULL) file = SD.open("/ULISP.IMG");
else error(LOADIMAGE, PSTR("illegal argument"), arg);
if (!file) error2(LOADIMAGE, PSTR("problem loading from SD card"));
SDReadInt(file);
int imagesize = SDReadInt(file);
GlobalEnv = (object *)SDReadInt(file);
GCStack = (object *)SDReadInt(file);
#if SYMBOLTABLESIZE > BUFFERSIZE
SymbolTop = (char *)SDReadInt(file);
for (int i=0; i<SYMBOLTABLESIZE; i++) SymbolTable[i] = file.read();
#endif
for (int i=0; i<CODESIZE; i++) MyCode[i] = file.read();
for (int i=0; i<imagesize; i++) {
object *obj = &Workspace[i];
car(obj) = (object *)SDReadInt(file);
cdr(obj) = (object *)SDReadInt(file);
}
file.close();
gc(NULL, NULL);
return imagesize;
#elif defined(DATAFLASHSIZE)
if (!FlashSetup()) error2(LOADIMAGE, PSTR("no DataFlash found."));
FlashBeginRead();
FlashReadInt(); // Skip eval address
int imagesize = FlashReadInt();
if (imagesize == 0 || imagesize == 0xFFFFFFFF) error2(LOADIMAGE, PSTR("no saved image"));
GlobalEnv = (object *)FlashReadInt();
GCStack = (object *)FlashReadInt();
#if SYMBOLTABLESIZE > BUFFERSIZE
SymbolTop = (char *)FlashReadInt();
for (int i=0; i<SYMBOLTABLESIZE; i++) SymbolTable[i] = FlashReadByte();
#endif
for (int i=0; i<CODESIZE; i++) MyCode[i] = FlashReadByte();
for (int i=0; i<imagesize; i++) {
object *obj = &Workspace[i];
car(obj) = (object *)FlashReadInt();
cdr(obj) = (object *)FlashReadInt();
}
gc(NULL, NULL);
FlashEndRead();
return imagesize;
#else
(void) arg;
error2(LOADIMAGE, PSTR("not available"));
return 0;
#endif
}
void autorunimage () {
#if defined(sdcardsupport)
SD.begin(SDCARD_SS_PIN);
File file = SD.open("ULISP.IMG");
if (!file) error2(0, PSTR("problem autorunning from SD card"));
object *autorun = (object *)SDReadInt(file);
file.close();
if (autorun != NULL) {
loadimage(NULL);
apply(0, autorun, NULL, NULL);
}
#elif defined(DATAFLASHSIZE)
if (!FlashSetup()) error2(0, PSTR("no DataFlash found."));
FlashBeginRead();
object *autorun = (object *)FlashReadInt();
FlashEndRead();
if (autorun != NULL && (unsigned int)autorun != 0xFFFF) {
loadimage(nil);
apply(0, autorun, NULL, NULL);
}
#else
error2(0, PSTR("autorun not available"));
#endif
}
// Tracing
bool tracing (symbol_t name) {
int i = 0;
while (i < TRACEMAX) {
if (TraceFn[i] == name) return i+1;
i++;
}
return 0;
}
void trace (symbol_t name) {
if (tracing(name)) error(TRACE, PSTR("already being traced"), symbol(name));
int i = 0;
while (i < TRACEMAX) {
if (TraceFn[i] == 0) { TraceFn[i] = name; TraceDepth[i] = 0; return; }
i++;
}
error2(TRACE, PSTR("already tracing 3 functions"));
}
void untrace (symbol_t name) {
int i = 0;
while (i < TRACEMAX) {
if (TraceFn[i] == name) { TraceFn[i] = 0; return; }
i++;
}
error(UNTRACE, PSTR("not tracing"), symbol(name));
}
// Helper functions
bool consp (object *x) {
if (x == NULL) return false;
unsigned int type = x->type;
return type >= PAIR || type == ZZERO;
}
bool atom (object *x) {
if (x == NULL) return true;
unsigned int type = x->type;
return type < PAIR && type != ZZERO;
}
bool listp (object *x) {
if (x == NULL) return true;
unsigned int type = x->type;
return type >= PAIR || type == ZZERO;
}
bool improperp (object *x) {
if (x == NULL) return false;
unsigned int type = x->type;
return type < PAIR && type != ZZERO;
}
object *quote (object *arg) {
return cons(symbol(QUOTE), cons(arg,NULL));
}
// Radix 40 encoding
#define MAXSYMBOL 4096000000
int toradix40 (char ch) {
if (ch == 0) return 0;
if (ch >= '0' && ch <= '9') return ch-'0'+30;
if (ch == '$') return 27; if (ch == '*') return 28; if (ch == '-') return 29;
ch = ch | 0x20;
if (ch >= 'a' && ch <= 'z') return ch-'a'+1;
return -1; // Invalid
}
int fromradix40 (int n) {
if (n >= 1 && n <= 26) return 'a'+n-1;
if (n == 27) return '$'; if (n == 28) return '*'; if (n == 29) return '-';
if (n >= 30 && n <= 39) return '0'+n-30;
return 0;
}
int pack40 (char *buffer) {
int x = 0;
for (int i=0; i<6; i++) x = x * 40 + toradix40(buffer[i]);
return x;
}
bool valid40 (char *buffer) {
for (int i=0; i<6; i++) if (toradix40(buffer[i]) == -1) return false;
return true;
}
char *symbolname (symbol_t x) {
if (x < ENDFUNCTIONS) return lookupbuiltin(x);
else if (x >= MAXSYMBOL) return lookupsymbol(x);
char *buffer = SymbolTop;
buffer[3] = '\0'; buffer[4] = '\0'; buffer[5] = '\0'; buffer[6] = '\0';
for (int n=5; n>=0; n--) {
buffer[n] = fromradix40(x % 40);
x = x / 40;
}
return buffer;
}
int digitvalue (char d) {
if (d>='0' && d<='9') return d-'0';
d = d | 0x20;
if (d>='a' && d<='f') return d-'a'+10;
return 16;
}
int checkinteger (symbol_t name, object *obj) {
if (!integerp(obj)) error(name, notanumber, obj);
return obj->integer;
}
float checkintfloat (symbol_t name, object *obj){
if (integerp(obj)) return obj->integer;
if (floatp(obj)) return obj->single_float;
error(name, notanumber, obj);
}
int checkchar (symbol_t name, object *obj) {
if (!characterp(obj)) error(name, PSTR("argument is not a character"), obj);
return obj->integer;
}
int isstream (object *obj){
if (!streamp(obj)) error(0, PSTR("not a stream"), obj);
return obj->integer;
}
int issymbol (object *obj, symbol_t n) {
return symbolp(obj) && obj->name == n;
}
void checkargs (symbol_t name, object *args) {
int nargs = listlength(name, args);
if (name >= ENDFUNCTIONS) error(0, PSTR("not valid here"), symbol(name));
checkminmax(name, nargs);
}
int eq (object *arg1, object *arg2) {
if (arg1 == arg2) return true; // Same object
if ((arg1 == nil) || (arg2 == nil)) return false; // Not both values
if (arg1->cdr != arg2->cdr) return false; // Different values
if (symbolp(arg1) && symbolp(arg2)) return true; // Same symbol
if (integerp(arg1) && integerp(arg2)) return true; // Same integer
if (floatp(arg1) && floatp(arg2)) return true; // Same float
if (characterp(arg1) && characterp(arg2)) return true; // Same character
return false;
}
int listlength (symbol_t name, object *list) {
int length = 0;
while (list != NULL) {
if (improperp(list)) error2(name, notproper);
list = cdr(list);
length++;
}
return length;
}
// Association lists
object *assoc (object *key, object *list) {
while (list != NULL) {
if (improperp(list)) error(ASSOC, notproper, list);
object *pair = first(list);
if (!listp(pair)) error(ASSOC, PSTR("element is not a list"), pair);
if (pair != NULL && eq(key,car(pair))) return pair;
list = cdr(list);
}
return nil;
}
object *delassoc (object *key, object **alist) {
object *list = *alist;
object *prev = NULL;
while (list != NULL) {
object *pair = first(list);
if (eq(key,car(pair))) {
if (prev == NULL) *alist = cdr(list);
else cdr(prev) = cdr(list);
return key;
}
prev = list;
list = cdr(list);
}
return nil;
}
// Array utilities
int nextpower2 (int n) {
n--; n |= n >> 1; n |= n >> 2; n |= n >> 4;
n |= n >> 8; n |= n >> 16; n++;
return n<2 ? 2 : n;
}
object *buildarray (int n, int s, object *def) {
int s2 = s>>1;
if (s2 == 1) {
if (n == 2) return cons(def, def);
else if (n == 1) return cons(def, NULL);
else return NULL;
} else if (n >= s2) return cons(buildarray(s2, s2, def), buildarray(n - s2, s2, def));
else return cons(buildarray(n, s2, def), nil);
}
object *makearray (symbol_t name, object *dims, object *def) {
int size = 1;
object *dimensions = dims;
while (dims != NULL) {
int d = car(dims)->integer;
if (d < 0) error2(MAKEARRAY, PSTR("dimension can't be negative"));
size = size * d;
dims = cdr(dims);
}
object *ptr = myalloc();
ptr->type = ARRAY;
object *tree = nil;
if (size != 0) tree = buildarray(size, nextpower2(size), def);
ptr->cdr = cons(tree, dimensions);
return ptr;
}
object **arrayref (object *array, int index, int size) {
int mask = nextpower2(size)>>1;
object **p = &car(cdr(array));
while (mask) {
if ((index & mask) == 0) p = &(car(*p)); else p = &(cdr(*p));
mask = mask>>1;
}
return p;
}
object **getarray (symbol_t name, object *array, object *subs, object *env) {
int index = 0, size = 1, s;
object *dims = cddr(array);
while (dims != NULL && subs != NULL) {
int d = car(dims)->integer;
if (env) s = checkinteger(name, eval(car(subs), env)); else s = checkinteger(name, car(subs));
if (s < 0 || s >= d) error(name, PSTR("subscript out of range"), car(subs));
size = size * d;
index = index * d + s;
dims = cdr(dims); subs = cdr(subs);
}
if (dims != NULL) error2(name, PSTR("too few subscripts"));
if (subs != NULL) error2(name, PSTR("too many subscripts"));
return arrayref(array, index, size);
}
void rslice (object *array, int size, int slice, object *dims, object *args) {
int d = first(dims)->integer;
for (int i = 0; i < d; i++) {
int index = slice * d + i;
if (cdr(dims) == NULL) {
if (args == NULL) error2(0, PSTR("initial contents don't match array type"));
object **p = arrayref(array, index, size);
*p = car(args);
} else rslice(array, size, index, cdr(dims), car(args));
args = cdr(args);
}
}
object *readarray (int d, object *args) {
object *list = args;
object *dims = NULL; object *head = NULL;
int size = 1;
for (int i = 0; i < d; i++) {
int l = listlength(0, list);
if (dims == NULL) { dims = cons(number(l), NULL); head = dims; }
else { cdr(dims) = cons(number(l), NULL); dims = cdr(dims); }
size = size * l;
if (list != NULL) list = car(list);
}
object *array = makearray(0, head, NULL);
rslice(array, size, 0, head, args);
return array;
}
void pslice (object *array, int size, int slice, object *dims, pfun_t pfun) {
pfun('(');
int d = first(dims)->integer;
for (int i = 0; i < d; i++) {
if (i) pfun(' ');
int index = slice * d + i;
if (cdr(dims) == NULL) {
printobject(*arrayref(array, index, size), pfun);
} else pslice(array, size, index, cdr(dims), pfun);
}
pfun(')');
}
void printarray (object *array, pfun_t pfun) {
object *dimensions = cddr(array);
object *dims = dimensions;
int size = 1, n = 0;
while (dims != NULL) { size = size * car(dims)->integer; dims = cdr(dims); n++; }
pfun('#'); if (n > 1) { pint(n, pfun); pfun('A'); }
pslice(array, size, 0, dimensions, pfun);
}
// String utilities
void indent (uint8_t spaces, char ch, pfun_t pfun) {
for (uint8_t i=0; i<spaces; i++) pfun(ch);
}
object *startstring (symbol_t name) {
object *string = myalloc();
string->type = STRING;
GlobalString = NULL;
GlobalStringIndex = 0;
return string;
}
void buildstring (char ch, int *chars, object **head) {
static object* tail;
static uint8_t shift;
if (*chars == 0) {
shift = (sizeof(int)-1)*8;
*chars = ch<<shift;
object *cell = myalloc();
if (*head == NULL) *head = cell; else tail->car = cell;
cell->car = NULL;
cell->chars = *chars;
tail = cell;
} else {
shift = shift - 8;
*chars = *chars | ch<<shift;
tail->chars = *chars;
if (shift == 0) *chars = 0;
}
}
object *readstring (char delim, gfun_t gfun) {
object *obj = myalloc();
obj->type = STRING;
int ch = gfun();
if (ch == -1) return nil;
object *head = NULL;
int chars = 0;
while ((ch != delim) && (ch != -1)) {
if (ch == '\\') ch = gfun();
buildstring(ch, &chars, &head);
ch = gfun();
}
obj->cdr = head;
return obj;
}
int stringlength (object *form) {
int length = 0;
form = cdr(form);
while (form != NULL) {
int chars = form->chars;
for (int i=(sizeof(int)-1)*8; i>=0; i=i-8) {
if (chars>>i & 0xFF) length++;
}
form = car(form);
}
return length;
}
char nthchar (object *string, int n) {
object *arg = cdr(string);
int top;
if (sizeof(int) == 4) { top = n>>2; n = 3 - (n&3); }
else { top = n>>1; n = 1 - (n&1); }
for (int i=0; i<top; i++) {
if (arg == NULL) return 0;
arg = car(arg);
}
if (arg == NULL) return 0;
return (arg->chars)>>(n*8) & 0xFF;
}
int gstr () {
if (LastChar) {
char temp = LastChar;
LastChar = 0;
return temp;
}
char c = nthchar(GlobalString, GlobalStringIndex++);
if (c != 0) return c;
return '\n'; // -1?
}
void pstr (char c) {
buildstring(c, &GlobalStringIndex, &GlobalString);
}
// Lookup variable in environment
object *value (symbol_t n, object *env) {
while (env != NULL) {
object *pair = car(env);
if (pair != NULL && car(pair)->name == n) return pair;
env = cdr(env);
}
return nil;
}
bool boundp (object *var, object *env) {
symbol_t varname = var->name;
if (value(varname, env) != NULL) return true;
if (value(varname, GlobalEnv) != NULL) return true;
return false;
}
object *findvalue (object *var, object *env) {
symbol_t varname = var->name;
object *pair = value(varname, env);
if (pair == NULL) pair = value(varname, GlobalEnv);
if (pair == NULL) error(0, PSTR("unknown variable"), var);
return pair;
}
// Handling closures
object *closure (int tc, symbol_t name, object *state, object *function, object *args, object **env) {
int trace = 0;
if (name) trace = tracing(name);
if (trace) {
indent(TraceDepth[trace-1]<<1, ' ', pserial);
pint(TraceDepth[trace-1]++, pserial);
pserial(':'); pserial(' '); pserial('('); pstring(symbolname(name), pserial);
}
object *params = first(function);
function = cdr(function);
// Dropframe
if (tc) {
if (*env != NULL && car(*env) == NULL) {
pop(*env);
while (*env != NULL && car(*env) != NULL) pop(*env);
} else push(nil, *env);
}
// Push state
while (state != NULL) {
object *pair = first(state);
push(pair, *env);
state = cdr(state);
}
// Add arguments to environment
bool optional = false;
while (params != NULL) {
object *value;
object *var = first(params);
if (symbolp(var) && var->name == OPTIONAL) optional = true;
else {
if (consp(var)) {
if (!optional) error(name, PSTR("invalid default value"), var);
if (args == NULL) value = eval(second(var), *env);
else { value = first(args); args = cdr(args); }
var = first(var);
if (!symbolp(var)) error(name, PSTR("illegal optional parameter"), var);
} else if (!symbolp(var)) {
error2(name, PSTR("illegal parameter"));
} else if (var->name == AMPREST) {
params = cdr(params);
var = first(params);
value = args;
args = NULL;
} else {
if (args == NULL) {
if (optional) value = nil;
else {
if (name) error2(name, toofewargs);
else error2(0, PSTR("function has too few arguments"));
}
} else { value = first(args); args = cdr(args); }
}
push(cons(var,value), *env);
if (trace) { pserial(' '); printobject(value, pserial); }
}
params = cdr(params);
}
if (args != NULL) {
if (name) error2(name, toomanyargs);
else error2(0, PSTR("function has too many arguments"));
}
if (trace) { pserial(')'); pln(pserial); }
// Do an implicit progn
if (tc) push(nil, *env);
return tf_progn(function, *env);
}
object *apply (symbol_t name, object *function, object *args, object *env) {
if (symbolp(function)) {
symbol_t fname = function->name;
checkargs(fname, args);
return ((fn_ptr_type)lookupfn(fname))(args, env);
}
if (consp(function) && issymbol(car(function), LAMBDA)) {
function = cdr(function);
object *result = closure(0, 0, NULL, function, args, &env);
return eval(result, env);
}
if (consp(function) && issymbol(car(function), CLOSURE)) {
function = cdr(function);
object *result = closure(0, 0, car(function), cdr(function), args, &env);
return eval(result, env);
}
error(name, PSTR("illegal function"), function);
return NULL;
}
// In-place operations
object **place (symbol_t name, object *args, object *env) {
if (atom(args)) return &cdr(findvalue(args, env));
object* function = first(args);
if (issymbol(function, CAR) || issymbol(function, FIRST)) {
object *value = eval(second(args), env);
if (!listp(value)) error(name, PSTR("can't take car"), value);
return &car(value);
}
if (issymbol(function, CDR) || issymbol(function, REST)) {
object *value = eval(second(args), env);
if (!listp(value)) error(name, PSTR("can't take cdr"), value);
return &cdr(value);
}
if (issymbol(function, NTH)) {
int index = checkinteger(NTH, eval(second(args), env));
object *list = eval(third(args), env);
if (atom(list)) error(name, PSTR("second argument to nth is not a list"), list);
while (index > 0) {
list = cdr(list);
if (list == NULL) error2(name, PSTR("index to nth is out of range"));
index--;
}
return &car(list);
}
if (issymbol(function, AREF)) {
object *array = eval(second(args), env);
if (!arrayp(array)) error(AREF, PSTR("first argument is not an array"), array);
return getarray(AREF, array, cddr(args), env);
}
error2(name, PSTR("illegal place"));
return nil;
}
// Checked car and cdr
inline object *carx (object *arg) {
if (!listp(arg)) error(0, PSTR("can't take car"), arg);
if (arg == nil) return nil;
return car(arg);
}
inline object *cdrx (object *arg) {
if (!listp(arg)) error(0, PSTR("can't take cdr"), arg);
if (arg == nil) return nil;
return cdr(arg);
}
// I2C interface
void I2Cinit (bool enablePullup) {
(void) enablePullup;
Wire.begin();
}
inline int I2Cread () {
return Wire.read();
}
inline bool I2Cwrite (uint8_t data) {
return Wire.write(data);
}
bool I2Cstart (uint8_t address, uint8_t read) {
int ok = true;
if (read == 0) {
Wire.beginTransmission(address);
ok = (Wire.endTransmission(true) == 0);
Wire.beginTransmission(address);
}
else Wire.requestFrom(address, I2CCount);
return ok;
}
bool I2Crestart (uint8_t address, uint8_t read) {
int error = (Wire.endTransmission(false) != 0);
if (read == 0) Wire.beginTransmission(address);
else Wire.requestFrom(address, I2CCount);
return error ? false : true;
}
void I2Cstop (uint8_t read) {
if (read == 0) Wire.endTransmission(); // Check for error?
}
// Streams
inline int spiread () { return SPI.transfer(0); }
#if defined(ARDUINO_NRF52840_CLUE) || defined(ARDUINO_GRAND_CENTRAL_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
inline int spi1read () { return SPI1.transfer(0); }
#endif
#if defined(ARDUINO_SAM_DUE)
inline int serial1read () { while (!Serial1.available()) testescape(); return Serial1.read(); }
inline int serial2read () { while (!Serial2.available()) testescape(); return Serial2.read(); }
inline int serial3read () { while (!Serial3.available()) testescape(); return Serial3.read(); }
#elif !defined(_VARIANT_BBC_MICROBIT_) && !defined(ARDUINO_FEATHER_F405)
inline int serial1read () { while (!Serial1.available()) testescape(); return Serial1.read(); }
#endif
#if defined(sdcardsupport)
File SDpfile, SDgfile;
inline int SDread () {
if (LastChar) {
char temp = LastChar;
LastChar = 0;
return temp;
}
return SDgfile.read();
}
#endif
void serialbegin (int address, int baud) {
#if defined(_VARIANT_BBC_MICROBIT_) || defined(ARDUINO_FEATHER_F405)
error(WITHSERIAL, PSTR("port not supported"), number(address));
#elif defined(ARDUINO_SAM_DUE)
if (address == 1) Serial1.begin((long)baud*100);
else if (address == 2) Serial2.begin((long)baud*100);
else if (address == 3) Serial3.begin((long)baud*100);
else error(WITHSERIAL, PSTR("port not supported"), number(address));
#else
if (address == 1) Serial1.begin((long)baud*100);
else error(WITHSERIAL, PSTR("port not supported"), number(address));
#endif
}
void serialend (int address) {
#if defined(ARDUINO_SAM_DUE)
if (address == 1) {Serial1.flush(); Serial1.end(); }
else if (address == 2) {Serial2.flush(); Serial2.end(); }
else if (address == 3) {Serial3.flush(); Serial3.end(); }
#elif !defined(_VARIANT_BBC_MICROBIT_) && !defined(ARDUINO_FEATHER_F405)
if (address == 1) {Serial1.flush(); Serial1.end(); }
#endif
}
gfun_t gstreamfun (object *args) {
int streamtype = SERIALSTREAM;
int address = 0;
gfun_t gfun = gserial;
if (args != NULL) {
int stream = isstream(first(args));
streamtype = stream>>8; address = stream & 0xFF;
}
if (streamtype == I2CSTREAM) gfun = (gfun_t)I2Cread;
else if (streamtype == SPISTREAM) {
if (address < 128) gfun = spiread;
#if defined(ARDUINO_NRF52840_CLUE) || defined(ARDUINO_GRAND_CENTRAL_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
else gfun = spi1read;
#endif
}
else if (streamtype == SERIALSTREAM) {
if (address == 0) gfun = gserial;
#if defined(ARDUINO_SAM_DUE)
else if (address == 1) gfun = serial1read;
else if (address == 2) gfun = serial2read;
else if (address == 3) gfun = serial3read;
#elif !defined(_VARIANT_BBC_MICROBIT_) && !defined(ARDUINO_FEATHER_F405)
else if (address == 1) gfun = serial1read;
#endif
}
#if defined(sdcardsupport)
else if (streamtype == SDSTREAM) gfun = (gfun_t)SDread;
#endif
else error2(0, PSTR("unknown stream type"));
return gfun;
}
inline void spiwrite (char c) { SPI.transfer(c); }
#if defined(ARDUINO_NRF52840_CLUE) || defined(ARDUINO_GRAND_CENTRAL_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
inline void spi1write (char c) { SPI1.transfer(c); }
#endif
#if defined(ARDUINO_SAM_DUE)
inline void serial1write (char c) { Serial1.write(c); }
inline void serial2write (char c) { Serial2.write(c); }
inline void serial3write (char c) { Serial3.write(c); }
#elif !defined(_VARIANT_BBC_MICROBIT_)
inline void serial1write (char c) { Serial1.write(c); }
#endif
#if defined(sdcardsupport)
inline void SDwrite (char c) { SDpfile.write(c); }
#endif
#if defined(gfxsupport)
inline void gfxwrite (char c) { tft.write(c); }
#endif
pfun_t pstreamfun (object *args) {
int streamtype = SERIALSTREAM;
int address = 0;
pfun_t pfun = pserial;
if (args != NULL && first(args) != NULL) {
int stream = isstream(first(args));
streamtype = stream>>8; address = stream & 0xFF;
}
if (streamtype == I2CSTREAM) pfun = (pfun_t)I2Cwrite;
else if (streamtype == SPISTREAM) {
if (address < 128) pfun = spiwrite;
#if defined(ARDUINO_NRF52840_CLUE) || defined(ARDUINO_GRAND_CENTRAL_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
else pfun = spi1write;
#endif
}
else if (streamtype == SERIALSTREAM) {
if (address == 0) pfun = pserial;
#if defined(ARDUINO_SAM_DUE)
else if (address == 1) pfun = serial1write;
else if (address == 2) pfun = serial2write;
else if (address == 3) pfun = serial3write;
#elif !defined(_VARIANT_BBC_MICROBIT_) && !defined(ARDUINO_FEATHER_F405)
else if (address == 1) pfun = serial1write;
#endif
}
else if (streamtype == STRINGSTREAM) {
pfun = pstr;
}
#if defined(sdcardsupport)
else if (streamtype == SDSTREAM) pfun = (pfun_t)SDwrite;
#endif
#if defined(gfxsupport)
else if (streamtype == GFXSTREAM) pfun = (pfun_t)gfxwrite;
#endif
else error2(0, PSTR("unknown stream type"));
return pfun;
}
// Check pins
void checkanalogread (int pin) {
#if defined(ARDUINO_SAM_DUE)
if (!(pin>=54 && pin<=65)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_SAMD_ZERO)
if (!(pin>=14 && pin<=19)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_SAMD_MKRZERO)
if (!(pin>=15 && pin<=21)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_ITSYBITSY_M0)
if (!(pin>=14 && pin<=25)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_GEMMA_M0)
if (!(pin>=8 && pin<=10)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_METRO_M4)
if (!(pin>=14 && pin<=21)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_ITSYBITSY_M4)
if (!(pin>=14 && pin<=19)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_FEATHER_M4)
if (!(pin>=14 && pin<=19)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_GRAND_CENTRAL_M4)
if (!((pin>=67 && pin<=74) || (pin>=54 && pin<=61))) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(_VARIANT_BBC_MICROBIT_)
if (!((pin>=0 && pin<=4) || pin==10)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_NRF52840_ITSYBITSY)
if (!(pin>=14 && pin<=20)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(ARDUINO_NRF52840_CLUE)
if (!((pin>=0 && pin<=4) || pin==10 || pin==12 || pin==16)) error(ANALOGREAD, invalidpin, number(pin));
#elif defined(MAX32620)
if (!(pin>=49 && pin<=52)) error(ANALOGREAD, invalidpin, number(pin));
#endif
}
void checkanalogwrite (int pin) {
#if defined(ARDUINO_SAM_DUE)
if (!((pin>=2 && pin<=13) || pin==66 || pin==67)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_SAMD_ZERO)
if (!((pin>=3 && pin<=6) || (pin>=8 && pin<=13) || pin==14)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_SAMD_MKRZERO)
if (!((pin>=0 && pin<=8) || pin==10 || pin==18 || pin==19)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_ITSYBITSY_M0)
if (!((pin>=3 && pin<=6) || (pin>=8 && pin<=13) || (pin>=15 && pin<=16) || (pin>=22 && pin<=25))) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_GEMMA_M0)
if (!(pin==0 || pin==2 || pin==9 || pin==10)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_METRO_M4)
if (!(pin>=0 && pin<=15)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_ITSYBITSY_M4)
if (!(pin==0 || pin==1 || pin==4 || pin==5 || pin==7 || (pin>=9 && pin<=15) || pin==21 || pin==22)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_FEATHER_M4)
if (!(pin==0 || pin==1 || (pin>=4 && pin<=6) || (pin>=9 && pin<=13) || pin==14 || pin==15 || pin==17 || pin==21 || pin==22)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_GRAND_CENTRAL_M4)
if (!((pin>=2 && pin<=9) || pin==11 || (pin>=13 && pin<=45) || pin==48 || (pin>=50 && pin<=53) || pin==58 || pin==61 || pin==68 || pin==69)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(_VARIANT_BBC_MICROBIT_)
if (!(pin>=0 && pin<=2)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_NRF52840_ITSYBITSY)
if (!(pin>=0 && pin<=25)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(ARDUINO_NRF52840_CLUE)
if (!(pin>=0 && pin<=46)) error(ANALOGWRITE, invalidpin, number(pin));
#elif defined(MAX32620)
if (!((pin>=20 && pin<=29) || pin==32 || (pin>=40 && pin<=48))) error(ANALOGWRITE, invalidpin, number(pin));
#endif
}
// Note
const int scale[] PROGMEM = {4186,4435,4699,4978,5274,5588,5920,6272,6645,7040,7459,7902};
void playnote (int pin, int note, int octave) {
#if defined(ARDUINO_NRF52840_CLUE)
int prescaler = 8 - octave - note/12;
if (prescaler<0 || prescaler>8) error(NOTE, PSTR("octave out of range"), number(prescaler));
tone(pin, scale[note%12]>>prescaler);
#endif
}
void nonote (int pin) {
#if defined(ARDUINO_NRF52840_CLUE)
noTone(pin);
#endif
}
// Sleep
#if defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKRZERO)
void WDT_Handler(void) {
// ISR for watchdog early warning
WDT->CTRL.bit.ENABLE = 0; // Disable watchdog
while(WDT->STATUS.bit.SYNCBUSY); // Sync CTRL write
WDT->INTFLAG.bit.EW = 1; // Clear interrupt flag
}
#endif
void initsleep () {
#if defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKRZERO)
// One-time initialization of watchdog timer.
// Generic clock generator 2, divisor = 32 (2^(DIV+1))
GCLK->GENDIV.reg = GCLK_GENDIV_ID(2) | GCLK_GENDIV_DIV(4);
// Enable clock generator 2 using low-power 32KHz oscillator.
// With /32 divisor above, this yields 1024Hz clock.
GCLK->GENCTRL.reg = GCLK_GENCTRL_ID(2) |
GCLK_GENCTRL_GENEN |
GCLK_GENCTRL_SRC_OSCULP32K |
GCLK_GENCTRL_DIVSEL;
while(GCLK->STATUS.bit.SYNCBUSY);
// WDT clock = clock gen 2
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID_WDT |
GCLK_CLKCTRL_CLKEN |
GCLK_CLKCTRL_GEN_GCLK2;
// Enable WDT early-warning interrupt
NVIC_DisableIRQ(WDT_IRQn);
NVIC_ClearPendingIRQ(WDT_IRQn);
NVIC_SetPriority(WDT_IRQn, 0); // Top priority
NVIC_EnableIRQ(WDT_IRQn);
#endif
}
void sleep (int secs) {
#if defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKRZERO)
WDT->CTRL.reg = 0; // Disable watchdog for config
while(WDT->STATUS.bit.SYNCBUSY);
WDT->INTENSET.bit.EW = 1; // Enable early warning interrupt
WDT->CONFIG.bit.PER = 0xB; // Period = max
WDT->CONFIG.bit.WINDOW = 0x7; // Set time of interrupt = 1024 cycles = 1 sec
WDT->CTRL.bit.WEN = 1; // Enable window mode
while(WDT->STATUS.bit.SYNCBUSY); // Sync CTRL write
SysTick->CTRL = 0; // Stop SysTick interrupts
while (secs > 0) {
WDT->CLEAR.reg = WDT_CLEAR_CLEAR_KEY;// Clear watchdog interval
while(WDT->STATUS.bit.SYNCBUSY);
WDT->CTRL.bit.ENABLE = 1; // Start watchdog now!
while(WDT->STATUS.bit.SYNCBUSY);
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; // Deepest sleep
__DSB();
__WFI(); // Wait for interrupt
secs--;
}
SysTick->CTRL = 7; // Restart SysTick interrupts
#else
delay(1000*secs);
#endif
}
// Prettyprint
const int PPINDENT = 2;
const int PPWIDTH = 80;
const int GFXPPWIDTH = 52; // 320 pixel wide screen
int ppwidth = PPWIDTH;
void pcount (char c) {
if (c == '\n') PrintCount++;
PrintCount++;
}
uint8_t atomwidth (object *obj) {
PrintCount = 0;
printobject(obj, pcount);
return PrintCount;
}
uint8_t hexwidth (object *obj) {
PrintCount = 0;
pinthex(obj->integer, pcount);
return PrintCount;
}
boolean quoted (object *obj) {
return (consp(obj) && car(obj) != NULL && car(obj)->name == QUOTE && consp(cdr(obj)) && cddr(obj) == NULL);
}
int subwidth (object *obj, int w) {
if (atom(obj)) return w - atomwidth(obj);
if (quoted(obj)) return subwidthlist(car(cdr(obj)), w - 1);
return subwidthlist(obj, w - 1);
}
int subwidthlist (object *form, int w) {
while (form != NULL && w >= 0) {
if (atom(form)) return w - (2 + atomwidth(form));
w = subwidth(car(form), w - 1);
form = cdr(form);
}
return w;
}
void superprint (object *form, int lm, pfun_t pfun) {
if (atom(form)) {
if (symbolp(form) && form->name == NOTHING) pstring(symbolname(form->name), pfun);
else printobject(form, pfun);
}
else if (quoted(form)) { pfun('\''); superprint(car(cdr(form)), lm + 1, pfun); }
else if (subwidth(form, ppwidth - lm) >= 0) supersub(form, lm + PPINDENT, 0, pfun);
else supersub(form, lm + PPINDENT, 1, pfun);
}
const int ppspecials = 18;
const char ppspecial[ppspecials] PROGMEM =
{ DOTIMES, DOLIST, IF, SETQ, TEE, LET, LETSTAR, LAMBDA, WHEN, UNLESS, WITHI2C, WITHSERIAL, WITHSPI, WITHSDCARD, WITHGFX, WITHOUTPUTTOSTRING, FORMILLIS };
void supersub (object *form, int lm, int super, pfun_t pfun) {
int special = 0, separate = 1;
object *arg = car(form);
if (symbolp(arg)) {
int name = arg->name;
if (name == DEFUN || name == DEFCODE) special = 2;
else for (int i=0; i<ppspecials; i++) {
if (name == ppspecial[i]) { special = 1; break; }
}
}
while (form != NULL) {
if (atom(form)) { pfstring(PSTR(" . "), pfun); printobject(form, pfun); pfun(')'); return; }
else if (separate) { pfun('('); separate = 0; }
else if (special) { pfun(' '); special--; }
else if (!super) pfun(' ');
else { pln(pfun); indent(lm, ' ', pfun); }
superprint(car(form), lm, pfun);
form = cdr(form);
}
pfun(')'); return;
}
// Assembler
object *call (int entry, int nargs, object *args, object *env) {
(void) env;
int param[4];
for (int i=0; i<nargs; i++) {
object *arg = first(args);
if (integerp(arg)) param[i] = arg->integer;
else param[i] = (uintptr_t)arg;
args = cdr(args);
}
int w = ((intfn_ptr_type)&MyCode[entry])(param[0], param[1], param[2], param[3]);
return number(w);
}
void putcode (object *arg, int origin, int pc) {
int code = checkinteger(DEFCODE, arg);
MyCode[origin+pc] = code & 0xff;
MyCode[origin+pc+1] = (code>>8) & 0xff;
#if defined(assemblerlist)
printhex4(pc, pserial);
printhex4(code, pserial);
#endif
}
int assemble (int pass, int origin, object *entries, object *env, object *pcpair) {
int pc = 0; cdr(pcpair) = number(pc);
while (entries != NULL) {
object *arg = first(entries);
if (symbolp(arg)) {
if (pass == 2) {
#if defined(assemblerlist)
printhex4(pc, pserial);
pfstring(PSTR(" "), pserial);
printobject(arg, pserial); pln(pserial);
#endif
} else {
object *pair = findvalue(arg, env);
cdr(pair) = number(pc);
}
} else {
object *argval = eval(arg, env);
if (listp(argval)) {
object *arglist = argval;
while (arglist != NULL) {
if (pass == 2) {
putcode(first(arglist), origin, pc);
#if defined(assemblerlist)
if (arglist == argval) superprint(arg, 0, pserial);
pln(pserial);
#endif
}
pc = pc + 2;
cdr(pcpair) = number(pc);
arglist = cdr(arglist);
}
} else if (integerp(argval)) {
if (pass == 2) {
putcode(argval, origin, pc);
#if defined(assemblerlist)
superprint(arg, 0, pserial); pln(pserial);
#endif
}
pc = pc + 2;
cdr(pcpair) = number(pc);
} else error(DEFCODE, PSTR("illegal entry"), arg);
}
entries = cdr(entries);
}
// Round up to multiple of 4 to give code size
if (pc%4 != 0) pc = pc + 4 - pc%4;
return pc;
}
// Special forms
object *sp_quote (object *args, object *env) {
(void) env;
checkargs(QUOTE, args);
return first(args);
}
object *sp_defun (object *args, object *env) {
(void) env;
checkargs(DEFUN, args);
object *var = first(args);
if (!symbolp(var)) error(DEFUN, notasymbol, var);
object *val = cons(symbol(LAMBDA), cdr(args));
object *pair = value(var->name,GlobalEnv);
if (pair != NULL) cdr(pair) = val;
else push(cons(var, val), GlobalEnv);
return var;
}
object *sp_defvar (object *args, object *env) {
checkargs(DEFVAR, args);
object *var = first(args);
if (!symbolp(var)) error(DEFVAR, notasymbol, var);
object *val = NULL;
args = cdr(args);
if (args != NULL) { setflag(NOESC); val = eval(first(args), env); clrflag(NOESC); }
object *pair = value(var->name, GlobalEnv);
if (pair != NULL) cdr(pair) = val;
else push(cons(var, val), GlobalEnv);
return var;
}
object *sp_setq (object *args, object *env) {
object *arg = nil;
while (args != NULL) {
if (cdr(args) == NULL) error2(SETQ, oddargs);
object *pair = findvalue(first(args), env);
arg = eval(second(args), env);
cdr(pair) = arg;
args = cddr(args);
}
return arg;
}
object *sp_loop (object *args, object *env) {
object *start = args;
for (;;) {
args = start;
while (args != NULL) {
object *result = eval(car(args),env);
if (tstflag(RETURNFLAG)) {
clrflag(RETURNFLAG);
return result;
}
args = cdr(args);
}
}
}
object *sp_return (object *args, object *env) {
object *result = eval(tf_progn(args,env), env);
setflag(RETURNFLAG);
return result;
}
object *sp_push (object *args, object *env) {
checkargs(PUSH, args);
object *item = eval(first(args), env);
object **loc = place(PUSH, second(args), env);
push(item, *loc);
return *loc;
}
object *sp_pop (object *args, object *env) {
checkargs(POP, args);
object **loc = place(POP, first(args), env);
object *result = car(*loc);
pop(*loc);
return result;
}
// Accessors
object *sp_incf (object *args, object *env) {
checkargs(INCF, args);
object **loc = place(INCF, first(args), env);
args = cdr(args);
object *x = *loc;
object *inc = (args != NULL) ? eval(first(args), env) : NULL;
if (floatp(x) || floatp(inc)) {
float increment;
float value = checkintfloat(INCF, x);
if (inc == NULL) increment = 1.0;
else increment = checkintfloat(INCF, inc);
*loc = makefloat(value + increment);
} else if (integerp(x) && (integerp(inc) || inc == NULL)) {
int increment;
int value = x->integer;
if (inc == NULL) increment = 1;
else increment = inc->integer;
if (increment < 1) {
if (INT_MIN - increment > value) *loc = makefloat((float)value + (float)increment);
else *loc = number(value + increment);
} else {
if (INT_MAX - increment < value) *loc = makefloat((float)value + (float)increment);
else *loc = number(value + increment);
}
} else error2(INCF, notanumber);
return *loc;
}
object *sp_decf (object *args, object *env) {
checkargs(DECF, args);
object **loc = place(DECF, first(args), env);
args = cdr(args);
object *x = *loc;
object *dec = (args != NULL) ? eval(first(args), env) : NULL;
if (floatp(x) || floatp(dec)) {
float decrement;
float value = checkintfloat(DECF, x);
if (dec == NULL) decrement = 1.0;
else decrement = checkintfloat(DECF, dec);
*loc = makefloat(value - decrement);
} if (integerp(x) && (integerp(dec) || dec == NULL)) {
int decrement;
int value = x->integer;
if (dec == NULL) decrement = 1;
else decrement = dec->integer;
if (decrement < 1) {
if (INT_MAX + decrement < value) *loc = makefloat((float)value - (float)decrement);
else *loc = number(value - decrement);
} else {
if (INT_MIN + decrement > value) *loc = makefloat((float)value - (float)decrement);
else *loc = number(value - decrement);
}
} else error2(DECF, notanumber);
return *loc;
}
object *sp_setf (object *args, object *env) {
object *arg = nil;
while (args != NULL) {
if (cdr(args) == NULL) error2(SETF, oddargs);
object **loc = place(SETF, first(args), env);
arg = eval(second(args), env);
*loc = arg;
args = cddr(args);
}
return arg;
}
// Other special forms
object *sp_dolist (object *args, object *env) {
if (args == NULL) error2(DOLIST, noargument);
object *params = first(args);
object *var = first(params);
object *list = eval(second(params), env);
push(list, GCStack); // Don't GC the list
object *pair = cons(var,nil);
push(pair,env);
params = cdr(cdr(params));
args = cdr(args);
while (list != NULL) {
if (improperp(list)) error(DOLIST, notproper, list);
cdr(pair) = first(list);
object *forms = args;
while (forms != NULL) {
object *result = eval(car(forms), env);
if (tstflag(RETURNFLAG)) {
clrflag(RETURNFLAG);
pop(GCStack);
return result;
}
forms = cdr(forms);
}
list = cdr(list);
}
cdr(pair) = nil;
pop(GCStack);
if (params == NULL) return nil;
return eval(car(params), env);
}
object *sp_dotimes (object *args, object *env) {
if (args == NULL) error2(DOTIMES, noargument);
object *params = first(args);
object *var = first(params);
int count = checkinteger(DOTIMES, eval(second(params), env));
int index = 0;
params = cdr(cdr(params));
object *pair = cons(var,number(0));
push(pair,env);
args = cdr(args);
while (index < count) {
cdr(pair) = number(index);
object *forms = args;
while (forms != NULL) {
object *result = eval(car(forms), env);
if (tstflag(RETURNFLAG)) {
clrflag(RETURNFLAG);
return result;
}
forms = cdr(forms);
}
index++;
}
cdr(pair) = number(index);
if (params == NULL) return nil;
return eval(car(params), env);
}
object *sp_trace (object *args, object *env) {
(void) env;
while (args != NULL) {
trace(first(args)->name);
args = cdr(args);
}
int i = 0;
while (i < TRACEMAX) {
if (TraceFn[i] != 0) args = cons(symbol(TraceFn[i]), args);
i++;
}
return args;
}
object *sp_untrace (object *args, object *env) {
(void) env;
if (args == NULL) {
int i = 0;
while (i < TRACEMAX) {
if (TraceFn[i] != 0) args = cons(symbol(TraceFn[i]), args);
TraceFn[i] = 0;
i++;
}
} else {
while (args != NULL) {
untrace(first(args)->name);
args = cdr(args);
}
}
return args;
}
object *sp_formillis (object *args, object *env) {
object *param = first(args);
unsigned long start = millis();
unsigned long now, total = 0;
if (param != NULL) total = checkinteger(FORMILLIS, eval(first(param), env));
eval(tf_progn(cdr(args),env), env);
do {
now = millis() - start;
testescape();
} while (now < total);
if (now <= INT_MAX) return number(now);
return nil;
}
object *sp_withoutputtostring (object *args, object *env) {
object *params = first(args);
if (params == NULL) error2(WITHOUTPUTTOSTRING, nostream);
object *var = first(params);
object *pair = cons(var, stream(STRINGSTREAM, 0));
push(pair,env);
object *string = startstring(WITHOUTPUTTOSTRING);
object *forms = cdr(args);
eval(tf_progn(forms,env), env);
string->cdr = GlobalString;
GlobalString = NULL;
return string;
}
object *sp_withserial (object *args, object *env) {
object *params = first(args);
if (params == NULL) error2(WITHSERIAL, nostream);
object *var = first(params);
int address = checkinteger(WITHSERIAL, eval(second(params), env));
params = cddr(params);
int baud = 96;
if (params != NULL) baud = checkinteger(WITHSERIAL, eval(first(params), env));
object *pair = cons(var, stream(SERIALSTREAM, address));
push(pair,env);
serialbegin(address, baud);
object *forms = cdr(args);
object *result = eval(tf_progn(forms,env), env);
serialend(address);
return result;
}
object *sp_withi2c (object *args, object *env) {
object *params = first(args);
if (params == NULL) error2(WITHI2C, nostream);
object *var = first(params);
int address = checkinteger(WITHI2C, eval(second(params), env));
params = cddr(params);
int read = 0; // Write
I2CCount = 0;
if (params != NULL) {
object *rw = eval(first(params), env);
if (integerp(rw)) I2CCount = rw->integer;
read = (rw != NULL);
}
I2Cinit(1); // Pullups
object *pair = cons(var, (I2Cstart(address, read)) ? stream(I2CSTREAM, address) : nil);
push(pair,env);
object *forms = cdr(args);
object *result = eval(tf_progn(forms,env), env);
I2Cstop(read);
return result;
}
object *sp_withspi (object *args, object *env) {
object *params = first(args);
if (params == NULL) error2(WITHSPI, nostream);
object *var = first(params);
params = cdr(params);
if (params == NULL) error2(WITHSPI, nostream);
int pin = checkinteger(WITHSPI, eval(car(params), env));
pinMode(pin, OUTPUT);
digitalWrite(pin, HIGH);
params = cdr(params);
int clock = 4000, mode = SPI_MODE0, address = 0; // Defaults
BitOrder bitorder = MSBFIRST;
if (params != NULL) {
clock = checkinteger(WITHSPI, eval(car(params), env));
params = cdr(params);
if (params != NULL) {
bitorder = (checkinteger(WITHSPI, eval(car(params), env)) == 0) ? LSBFIRST : MSBFIRST;
params = cdr(params);
if (params != NULL) {
int modeval = checkinteger(WITHSPI, eval(car(params), env));
mode = (modeval == 3) ? SPI_MODE3 : (modeval == 2) ? SPI_MODE2 : (modeval == 1) ? SPI_MODE1 : SPI_MODE0;
params = cdr(params);
if (params != NULL) {
address = checkinteger(WITHSPI, eval(car(params), env));
}
}
}
}
object *pair = cons(var, stream(SPISTREAM, pin + 128*address));
push(pair,env);
SPIClass *spiClass = &SPI;
#if defined(ARDUINO_NRF52840_CLUE) || defined(ARDUINO_GRAND_CENTRAL_M4) || defined(ARDUINO_PYBADGE_M4) || defined(ARDUINO_PYGAMER_M4)
if (address == 1) spiClass = &SPI1;
#endif
(*spiClass).begin();
(*spiClass).beginTransaction(SPISettings(((unsigned long)clock * 1000), bitorder, mode));
digitalWrite(pin, LOW);
object *forms = cdr(args);
object *result = eval(tf_progn(forms,env), env);
digitalWrite(pin, HIGH);
(*spiClass).endTransaction();
return result;
}
object *sp_withsdcard (object *args, object *env) {
#if defined(sdcardsupport)
object *params = first(args);
if (params == NULL) error2(WITHSDCARD, nostream);
object *var = first(params);
object *filename = eval(second(params), env);
params = cddr(params);
SD.begin(SDCARD_SS_PIN);
int mode = 0;
if (params != NULL && first(params) != NULL) mode = checkinteger(WITHSDCARD, first(params));
int oflag = O_READ;
if (mode == 1) oflag = O_RDWR | O_CREAT | O_APPEND; else if (mode == 2) oflag = O_RDWR | O_CREAT | O_TRUNC;
if (mode >= 1) {
SDpfile = SD.open(MakeFilename(filename), oflag);
if (!SDpfile) error2(WITHSDCARD, PSTR("problem writing to SD card"));
} else {
SDgfile = SD.open(MakeFilename(filename), oflag);
if (!SDgfile) error2(WITHSDCARD, PSTR("problem reading from SD card"));
}
object *pair = cons(var, stream(SDSTREAM, 1));
push(pair,env);
object *forms = cdr(args);
object *result = eval(tf_progn(forms,env), env);
if (mode >= 1) SDpfile.close(); else SDgfile.close();
return result;
#else
(void) args, (void) env;
error2(WITHSDCARD, PSTR("not supported"));
return nil;
#endif
}
object *sp_withgfx (object *args, object *env) {
#if defined(gfxsupport)
object *params = first(args);
object *var = first(params);
object *pair = cons(var, stream(GFXSTREAM, 1));
push(pair,env);
object *forms = cdr(args);
object *result = eval(tf_progn(forms,env), env);
return result;
#else
(void) args, (void) env;
error2(WITHGFX, PSTR("not supported"));
return nil;
#endif
}
// Assembler
object *sp_defcode (object *args, object *env) {
setflag(NOESC);
checkargs(DEFCODE, args);
object *var = first(args);
object *params = second(args);
if (!symbolp(var)) error(DEFCODE, PSTR("not a symbol"), var);
// Make parameters into synonyms for registers r0, r1, etc
int regn = 0;
while (params != NULL) {
if (regn > 3) error(DEFCODE, PSTR("more than 4 parameters"), var);
object *regpair = cons(car(params), newsymbol((18*40+30+regn)*2560000)); // Symbol for r0 etc
push(regpair,env);
regn++;
params = cdr(params);
}
// Make *pc* a local variable
object *pcpair = cons(newsymbol(pack40((char*)"*pc*\0\0")), number(0));
push(pcpair,env);
args = cdr(args);
// Make labels into local variables
object *entries = cdr(args);
while (entries != NULL) {
object *arg = first(entries);
if (symbolp(arg)) {
object *pair = cons(arg,number(0));
push(pair,env);
}
entries = cdr(entries);
}
// First pass
int origin = 0;
int codesize = assemble(1, origin, cdr(args), env, pcpair);
// See if it will fit
object *globals = GlobalEnv;
while (globals != NULL) {
object *pair = car(globals);
if (pair != NULL && car(pair) != var) { // Exclude me if I already exist
object *codeid = second(pair);
if (codeid->type == CODE) {
codesize = codesize + endblock(codeid) - startblock(codeid);
}
}
globals = cdr(globals);
}
if (codesize > CODESIZE) error(DEFCODE, PSTR("not enough room for code"), var);
// Compact the code block, removing gaps
origin = 0;
object *block;
int smallest;
do {
smallest = CODESIZE;
globals = GlobalEnv;
while (globals != NULL) {
object *pair = car(globals);
if (pair != NULL && car(pair) != var) { // Exclude me if I already exist
object *codeid = second(pair);
if (codeid->type == CODE) {
if (startblock(codeid) < smallest && startblock(codeid) >= origin) {
smallest = startblock(codeid);
block = codeid;
}
}
}
globals = cdr(globals);
}
// Compact fragmentation if necessary
if (smallest == origin) origin = endblock(block); // No gap
else if (smallest < CODESIZE) { // Slide block down
int target = origin;
for (int i=startblock(block); i<endblock(block); i++) {
MyCode[target] = MyCode[i];
target++;
}
block->integer = target<<16 | origin;
origin = target;
}
} while (smallest < CODESIZE);
// Second pass - origin is first free location
codesize = assemble(2, origin, cdr(args), env, pcpair);
object *val = cons(codehead((origin+codesize)<<16 | origin), args);
object *pair = value(var->name, GlobalEnv);
if (pair != NULL) cdr(pair) = val;
else push(cons(var, val), GlobalEnv);
clrflag(NOESC);
return var;
}
// Tail-recursive forms
object *tf_progn (object *args, object *env) {
if (args == NULL) return nil;
object *more = cdr(args);
while (more != NULL) {
object *result = eval(car(args),env);
if (tstflag(RETURNFLAG)) return result;
args = more;
more = cdr(args);
}
return car(args);
}
object *tf_if (object *args, object *env) {
if (args == NULL || cdr(args) == NULL) error2(IF, PSTR("missing argument(s)"));
if (eval(first(args), env) != nil) return second(args);
args = cddr(args);
return (args != NULL) ? first(args) : nil;
}
object *tf_cond (object *args, object *env) {
while (args != NULL) {
object *clause = first(args);
if (!consp(clause)) error(COND, PSTR("illegal clause"), clause);
object *test = eval(first(clause), env);
object *forms = cdr(clause);
if (test != nil) {
if (forms == NULL) return quote(test); else return tf_progn(forms, env);
}
args = cdr(args);
}
return nil;
}
object *tf_when (object *args, object *env) {
if (args == NULL) error2(WHEN, noargument);
if (eval(first(args), env) != nil) return tf_progn(cdr(args),env);
else return nil;
}
object *tf_unless (object *args, object *env) {
if (args == NULL) error2(UNLESS, noargument);
if (eval(first(args), env) != nil) return nil;
else return tf_progn(cdr(args),env);
}
object *tf_case (object *args, object *env) {
object *test = eval(first(args), env);
args = cdr(args);
while (args != NULL) {
object *clause = first(args);
if (!consp(clause)) error(CASE, PSTR("illegal clause"), clause);
object *key = car(clause);
object *forms = cdr(clause);
if (consp(key)) {
while (key != NULL) {
if (eq(test,car(key))) return tf_progn(forms, env);
key = cdr(key);
}
} else if (eq(test,key) || eq(key,tee)) return tf_progn(forms, env);
args = cdr(args);
}
return nil;
}
object *tf_and (object *args, object *env) {
if (args == NULL) return tee;
object *more = cdr(args);
while (more != NULL) {
if (eval(car(args), env) == NULL) return nil;
args = more;
more = cdr(args);
}
return car(args);
}
object *tf_or (object *args, object *env) {
while (args != NULL) {
if (eval(car(args), env) != NULL) return car(args);
args = cdr(args);
}
return nil;
}
// Core functions
object *fn_not (object *args, object *env) {
(void) env;
return (first(args) == nil) ? tee : nil;
}
object *fn_cons (object *args, object *env) {
(void) env;
return cons(first(args), second(args));
}
object *fn_atom (object *args, object *env) {
(void) env;
return atom(first(args)) ? tee : nil;
}
object *fn_listp (object *args, object *env) {
(void) env;
return listp(first(args)) ? tee : nil;
}
object *fn_consp (object *args, object *env) {
(void) env;
return consp(first(args)) ? tee : nil;
}
object *fn_symbolp (object *args, object *env) {
(void) env;
object *arg = first(args);
return symbolp(arg) ? tee : nil;
}
object *fn_arrayp (object *args, object *env) {
(void) env;
return arrayp(first(args)) ? tee : nil;
}
object *fn_boundp (object *args, object *env) {
(void) env;
object *var = first(args);
if (!symbolp(var)) error(BOUNDP, notasymbol, var);
return boundp(var, env) ? tee : nil;
}
object *fn_setfn (object *args, object *env) {
object *arg = nil;
while (args != NULL) {
if (cdr(args) == NULL) error2(SETFN, oddargs);
object *pair = findvalue(first(args), env);
arg = second(args);
cdr(pair) = arg;
args = cddr(args);
}
return arg;
}
object *fn_streamp (object *args, object *env) {
(void) env;
object *arg = first(args);
return streamp(arg) ? tee : nil;
}
object *fn_eq (object *args, object *env) {
(void) env;
return eq(first(args), second(args)) ? tee : nil;
}
// List functions
object *fn_car (object *args, object *env) {
(void) env;
return carx(first(args));
}
object *fn_cdr (object *args, object *env) {
(void) env;
return cdrx(first(args));
}
object *fn_caar (object *args, object *env) {
(void) env;
return carx(carx(first(args)));
}
object *fn_cadr (object *args, object *env) {
(void) env;
return carx(cdrx(first(args)));
}
object *fn_cdar (object *args, object *env) {
(void) env;
return cdrx(carx(first(args)));
}
object *fn_cddr (object *args, object *env) {
(void) env;
return cdrx(cdrx(first(args)));
}
object *fn_caaar (object *args, object *env) {
(void) env;
return carx(carx(carx(first(args))));
}
object *fn_caadr (object *args, object *env) {
(void) env;
return carx(carx(cdrx(first(args))));
}
object *fn_cadar (object *args, object *env) {
(void) env;
return carx(cdrx(carx(first(args))));
}
object *fn_caddr (object *args, object *env) {
(void) env;
return carx(cdrx(cdrx(first(args))));
}
object *fn_cdaar (object *args, object *env) {
(void) env;
return cdrx(carx(carx(first(args))));
}
object *fn_cdadr (object *args, object *env) {
(void) env;
return cdrx(carx(cdrx(first(args))));
}
object *fn_cddar (object *args, object *env) {
(void) env;
return cdrx(cdrx(carx(first(args))));
}
object *fn_cdddr (object *args, object *env) {
(void) env;
return cdrx(cdrx(cdrx(first(args))));
}
object *fn_length (object *args, object *env) {
(void) env;
object *arg = first(args);
if (listp(arg)) return number(listlength(LENGTH, arg));
if (stringp(arg)) return number(stringlength(arg));
if (arrayp(arg) && cdr(cddr(arg)) == NULL) return first(cddr(arg));
error(LENGTH, PSTR("argument is not a list, 1d array, or string"), arg);
}
object *fn_arraydimensions (object *args, object *env) {
object *array = first(args);
if (!arrayp(array)) error(ARRAYDIMENSIONS, PSTR("argument is not an array"), array);
return cddr(array);
}
object *fn_list (object *args, object *env) {
(void) env;
return args;
}
object *fn_makearray (object *args, object *env) {
(void) env;
object *def = nil;
object *dims = first(args);
if (dims == NULL) error2(MAKEARRAY, PSTR("dimensions can't be nil"));
else if (atom(dims)) dims = cons(dims, NULL);
if (cdr(args) != NULL) {
object *var = second(args);
if (!symbolp(var) || var->name != INITIALELEMENT)
error(MAKEARRAY, PSTR("illegal second argument"), var);
if (cddr(args) != NULL) def = third(args);
}
return makearray(MAKEARRAY, dims, def);
}
object *fn_reverse (object *args, object *env) {
(void) env;
object *list = first(args);
object *result = NULL;
while (list != NULL) {
if (improperp(list)) error(REVERSE, notproper, list);
push(first(list),result);
list = cdr(list);
}
return result;
}
object *fn_nth (object *args, object *env) {
(void) env;
int n = checkinteger(NTH, first(args));
object *list = second(args);
while (list != NULL) {
if (improperp(list)) error(NTH, notproper, list);
if (n == 0) return car(list);
list = cdr(list);
n--;
}
return nil;
}
object *fn_aref (object *args, object *env) {
object *array = first(args);
if (!arrayp(array)) error(AREF, PSTR("first argument is not an array"), array);
return *getarray(AREF, array, cdr(args), 0);
}
object *fn_assoc (object *args, object *env) {
(void) env;
object *key = first(args);
object *list = second(args);
return assoc(key,list);
}
object *fn_member (object *args, object *env) {
(void) env;
object *item = first(args);
object *list = second(args);
while (list != NULL) {
if (improperp(list)) error(MEMBER, notproper, list);
if (eq(item,car(list))) return list;
list = cdr(list);
}
return nil;
}
object *fn_apply (object *args, object *env) {
object *previous = NULL;
object *last = args;
while (cdr(last) != NULL) {
previous = last;
last = cdr(last);
}
object *arg = car(last);
if (!listp(arg)) error(APPLY, PSTR("last argument is not a list"), arg);
cdr(previous) = arg;
return apply(APPLY, first(args), cdr(args), env);
}
object *fn_funcall (object *args, object *env) {
return apply(FUNCALL, first(args), cdr(args), env);
}
object *fn_append (object *args, object *env) {
(void) env;
object *head = NULL;
object *tail;
while (args != NULL) {
object *list = first(args);
if (!listp(list)) error(APPEND, notalist, list);
while (consp(list)) {
object *obj = cons(car(list), cdr(list));
if (head == NULL) head = obj;
else cdr(tail) = obj;
tail = obj;
list = cdr(list);
if (cdr(args) != NULL && improperp(list)) error(APPEND, notproper, first(args));
}
args = cdr(args);
}
return head;
}
object *fn_mapc (object *args, object *env) {
object *function = first(args);
args = cdr(args);
object *result = first(args);
object *params = cons(NULL, NULL);
push(params,GCStack);
// Make parameters
while (true) {
object *tailp = params;
object *lists = args;
while (lists != NULL) {
object *list = car(lists);
if (list == NULL) {
pop(GCStack);
return result;
}
if (improperp(list)) error(MAPC, notproper, list);
object *obj = cons(first(list),NULL);
car(lists) = cdr(list);
cdr(tailp) = obj; tailp = obj;
lists = cdr(lists);
}
apply(MAPC, function, cdr(params), env);
}
}
object *fn_mapcar (object *args, object *env) {
object *function = first(args);
args = cdr(args);
object *params = cons(NULL, NULL);
push(params,GCStack);
object *head = cons(NULL, NULL);
push(head,GCStack);
object *tail = head;
// Make parameters
while (true) {
object *tailp = params;
object *lists = args;
while (lists != NULL) {
object *list = car(lists);
if (list == NULL) {
pop(GCStack);
pop(GCStack);
return cdr(head);
}
if (improperp(list)) error(MAPCAR, notproper, list);
object *obj = cons(first(list),NULL);
car(lists) = cdr(list);
cdr(tailp) = obj; tailp = obj;
lists = cdr(lists);
}
object *result = apply(MAPCAR, function, cdr(params), env);
object *obj = cons(result,NULL);
cdr(tail) = obj; tail = obj;
}
}
object *fn_mapcan (object *args, object *env) {
object *function = first(args);
args = cdr(args);
object *params = cons(NULL, NULL);
push(params,GCStack);
object *head = cons(NULL, NULL);
push(head,GCStack);
object *tail = head;
// Make parameters
while (true) {
object *tailp = params;
object *lists = args;
while (lists != NULL) {
object *list = car(lists);
if (list == NULL) {
pop(GCStack);
pop(GCStack);
return cdr(head);
}
if (improperp(list)) error(MAPCAN, notproper, list);
object *obj = cons(first(list),NULL);
car(lists) = cdr(list);
cdr(tailp) = obj; tailp = obj;
lists = cdr(lists);
}
object *result = apply(MAPCAN, function, cdr(params), env);
while (consp(result)) {
cdr(tail) = result; tail = result;
result = cdr(result);
}
if (result != NULL) error(MAPCAN, resultproper, result);
}
}
// Arithmetic functions
object *add_floats (object *args, float fresult) {
while (args != NULL) {
object *arg = car(args);
fresult = fresult + checkintfloat(ADD, arg);
args = cdr(args);
}
return makefloat(fresult);
}
object *fn_add (object *args, object *env) {
(void) env;
int result = 0;
while (args != NULL) {
object *arg = car(args);
if (floatp(arg)) return add_floats(args, (float)result);
else if (integerp(arg)) {
int val = arg->integer;
if (val < 1) { if (INT_MIN - val > result) return add_floats(args, (float)result); }
else { if (INT_MAX - val < result) return add_floats(args, (float)result); }
result = result + val;
} else error(ADD, notanumber, arg);
args = cdr(args);
}
return number(result);
}
object *subtract_floats (object *args, float fresult) {
while (args != NULL) {
object *arg = car(args);
fresult = fresult - checkintfloat(SUBTRACT, arg);
args = cdr(args);
}
return makefloat(fresult);
}
object *negate (object *arg) {
if (integerp(arg)) {
int result = arg->integer;
if (result == INT_MIN) return makefloat(-result);
else return number(-result);
} else if (floatp(arg)) return makefloat(-(arg->single_float));
else error(SUBTRACT, notanumber, arg);
}
object *fn_subtract (object *args, object *env) {
(void) env;
object *arg = car(args);
args = cdr(args);
if (args == NULL) return negate(arg);
else if (floatp(arg)) return subtract_floats(args, arg->single_float);
else if (integerp(arg)) {
int result = arg->integer;
while (args != NULL) {
arg = car(args);
if (floatp(arg)) return subtract_floats(args, result);
else if (integerp(arg)) {
int val = (car(args))->integer;
if (val < 1) { if (INT_MAX + val < result) return subtract_floats(args, result); }
else { if (INT_MIN + val > result) return subtract_floats(args, result); }
result = result - val;
} else error(SUBTRACT, notanumber, arg);
args = cdr(args);
}
return number(result);
} else error(SUBTRACT, notanumber, arg);
}
object *multiply_floats (object *args, float fresult) {
while (args != NULL) {
object *arg = car(args);
fresult = fresult * checkintfloat(MULTIPLY, arg);
args = cdr(args);
}
return makefloat(fresult);
}
object *fn_multiply (object *args, object *env) {
(void) env;
int result = 1;
while (args != NULL){
object *arg = car(args);
if (floatp(arg)) return multiply_floats(args, result);
else if (integerp(arg)) {
int64_t val = result * (int64_t)(arg->integer);
if ((val > INT_MAX) || (val < INT_MIN)) return multiply_floats(args, result);
result = val;
} else error(MULTIPLY, notanumber, arg);
args = cdr(args);
}
return number(result);
}
object *divide_floats (object *args, float fresult) {
while (args != NULL) {
object *arg = car(args);
float f = checkintfloat(DIVIDE, arg);
if (f == 0.0) error2(DIVIDE, PSTR("division by zero"));
fresult = fresult / f;
args = cdr(args);
}
return makefloat(fresult);
}
object *fn_divide (object *args, object *env) {
(void) env;
object* arg = first(args);
args = cdr(args);
// One argument
if (args == NULL) {
if (floatp(arg)) {
float f = arg->single_float;
if (f == 0.0) error2(DIVIDE, PSTR("division by zero"));
return makefloat(1.0 / f);
} else if (integerp(arg)) {
int i = arg->integer;
if (i == 0) error2(DIVIDE, PSTR("division by zero"));
else if (i == 1) return number(1);
else return makefloat(1.0 / i);
} else error(DIVIDE, notanumber, arg);
}
// Multiple arguments
if (floatp(arg)) return divide_floats(args, arg->single_float);
else if (integerp(arg)) {
int result = arg->integer;
while (args != NULL) {
arg = car(args);
if (floatp(arg)) {
return divide_floats(args, result);
} else if (integerp(arg)) {
int i = arg->integer;
if (i == 0) error2(DIVIDE, PSTR("division by zero"));
if ((result % i) != 0) return divide_floats(args, result);
if ((result == INT_MIN) && (i == -1)) return divide_floats(args, result);
result = result / i;
args = cdr(args);
} else error(DIVIDE, notanumber, arg);
}
return number(result);
} else error(DIVIDE, notanumber, arg);
}
object *fn_mod (object *args, object *env) {
(void) env;
object *arg1 = first(args);
object *arg2 = second(args);
if (integerp(arg1) && integerp(arg2)) {
int divisor = arg2->integer;
if (divisor == 0) error2(MOD, PSTR("division by zero"));
int dividend = arg1->integer;
int remainder = dividend % divisor;
if ((dividend<0) != (divisor<0)) remainder = remainder + divisor;
return number(remainder);
} else {
float fdivisor = checkintfloat(MOD, arg2);
if (fdivisor == 0.0) error2(MOD, PSTR("division by zero"));
float fdividend = checkintfloat(MOD, arg1);
float fremainder = fmod(fdividend , fdivisor);
if ((fdividend<0) != (fdivisor<0)) fremainder = fremainder + fdivisor;
return makefloat(fremainder);
}
}
object *fn_oneplus (object *args, object *env) {
(void) env;
object* arg = first(args);
if (floatp(arg)) return makefloat((arg->single_float) + 1.0);
else if (integerp(arg)) {
int result = arg->integer;
if (result == INT_MAX) return makefloat((arg->integer) + 1.0);
else return number(result + 1);
} else error(ONEPLUS, notanumber, arg);
}
object *fn_oneminus (object *args, object *env) {
(void) env;
object* arg = first(args);
if (floatp(arg)) return makefloat((arg->single_float) - 1.0);
else if (integerp(arg)) {
int result = arg->integer;
if (result == INT_MIN) return makefloat((arg->integer) - 1.0);
else return number(result - 1);
} else error(ONEMINUS, notanumber, arg);
}
object *fn_abs (object *args, object *env) {
(void) env;
object *arg = first(args);
if (floatp(arg)) return makefloat(abs(arg->single_float));
else if (integerp(arg)) {
int result = arg->integer;
if (result == INT_MIN) return makefloat(abs((float)result));
else return number(abs(result));
} else error(ABS, notanumber, arg);
}
object *fn_random (object *args, object *env) {
(void) env;
object *arg = first(args);
if (integerp(arg)) return number(random(arg->integer));
else if (floatp(arg)) return makefloat((float)rand()/(float)(RAND_MAX/(arg->single_float)));
else error(RANDOM, notanumber, arg);
}
object *fn_maxfn (object *args, object *env) {
(void) env;
object* result = first(args);
args = cdr(args);
while (args != NULL) {
object *arg = car(args);
if (integerp(result) && integerp(arg)) {
if ((arg->integer) > (result->integer)) result = arg;
} else if ((checkintfloat(MAXFN, arg) > checkintfloat(MAXFN, result))) result = arg;
args = cdr(args);
}
return result;
}
object *fn_minfn (object *args, object *env) {
(void) env;
object* result = first(args);
args = cdr(args);
while (args != NULL) {
object *arg = car(args);
if (integerp(result) && integerp(arg)) {
if ((arg->integer) < (result->integer)) result = arg;
} else if ((checkintfloat(MINFN, arg) < checkintfloat(MINFN, result))) result = arg;
args = cdr(args);
}
return result;
}
// Arithmetic comparisons
object *fn_noteq (object *args, object *env) {
(void) env;
while (args != NULL) {
object *nargs = args;
object *arg1 = first(nargs);
nargs = cdr(nargs);
while (nargs != NULL) {
object *arg2 = first(nargs);
if (integerp(arg1) && integerp(arg2)) {
if ((arg1->integer) == (arg2->integer)) return nil;
} else if ((checkintfloat(NOTEQ, arg1) == checkintfloat(NOTEQ, arg2))) return nil;
nargs = cdr(nargs);
}
args = cdr(args);
}
return tee;
}
object *fn_numeq (object *args, object *env) {
(void) env;
object *arg1 = first(args);
args = cdr(args);
while (args != NULL) {
object *arg2 = first(args);
if (integerp(arg1) && integerp(arg2)) {
if (!((arg1->integer) == (arg2->integer))) return nil;
} else if (!(checkintfloat(NUMEQ, arg1) == checkintfloat(NUMEQ, arg2))) return nil;
arg1 = arg2;
args = cdr(args);
}
return tee;
}
object *fn_less (object *args, object *env) {
(void) env;
object *arg1 = first(args);
args = cdr(args);
while (args != NULL) {
object *arg2 = first(args);
if (integerp(arg1) && integerp(arg2)) {
if (!((arg1->integer) < (arg2->integer))) return nil;
} else if (!(checkintfloat(LESS, arg1) < checkintfloat(LESS, arg2))) return nil;
arg1 = arg2;
args = cdr(args);
}
return tee;
}
object *fn_lesseq (object *args, object *env) {
(void) env;
object *arg1 = first(args);
args = cdr(args);
while (args != NULL) {
object *arg2 = first(args);
if (integerp(arg1) && integerp(arg2)) {
if (!((arg1->integer) <= (arg2->integer))) return nil;
} else if (!(checkintfloat(LESSEQ, arg1) <= checkintfloat(LESSEQ, arg2))) return nil;
arg1 = arg2;
args = cdr(args);
}
return tee;
}
object *fn_greater (object *args, object *env) {
(void) env;
object *arg1 = first(args);
args = cdr(args);
while (args != NULL) {
object *arg2 = first(args);
if (integerp(arg1) && integerp(arg2)) {
if (!((arg1->integer) > (arg2->integer))) return nil;
} else if (!(checkintfloat(GREATER, arg1) > checkintfloat(GREATER, arg2))) return nil;
arg1 = arg2;
args = cdr(args);
}
return tee;
}
object *fn_greatereq (object *args, object *env) {
(void) env;
object *arg1 = first(args);
args = cdr(args);
while (args != NULL) {
object *arg2 = first(args);
if (integerp(arg1) && integerp(arg2)) {
if (!((arg1->integer) >= (arg2->integer))) return nil;
} else if (!(checkintfloat(GREATEREQ, arg1) >= checkintfloat(GREATEREQ, arg2))) return nil;
arg1 = arg2;
args = cdr(args);
}
return tee;
}
object *fn_plusp (object *args, object *env) {
(void) env;
object *arg = first(args);
if (floatp(arg)) return ((arg->single_float) > 0.0) ? tee : nil;
else if (integerp(arg)) return ((arg->integer) > 0) ? tee : nil;
else error(PLUSP, notanumber, arg);
}
object *fn_minusp (object *args, object *env) {
(void) env;
object *arg = first(args);
if (floatp(arg)) return ((arg->single_float) < 0.0) ? tee : nil;
else if (integerp(arg)) return ((arg->integer) < 0) ? tee : nil;
else error(MINUSP, notanumber, arg);
}
object *fn_zerop (object *args, object *env) {
(void) env;
object *arg = first(args);
if (floatp(arg)) return ((arg->single_float) == 0.0) ? tee : nil;
else if (integerp(arg)) return ((arg->integer) == 0) ? tee : nil;
else error(ZEROP, notanumber, arg);
}
object *fn_oddp (object *args, object *env) {
(void) env;
int arg = checkinteger(ODDP, first(args));
return ((arg & 1) == 1) ? tee : nil;
}
object *fn_evenp (object *args, object *env) {
(void) env;
int arg = checkinteger(EVENP, first(args));
return ((arg & 1) == 0) ? tee : nil;
}
// Number functions
object *fn_integerp (object *args, object *env) {
(void) env;
return integerp(first(args)) ? tee : nil;
}
object *fn_numberp (object *args, object *env) {
(void) env;
object *arg = first(args);
return (integerp(arg) || floatp(arg)) ? tee : nil;
}
// Floating-point functions
object *fn_floatfn (object *args, object *env) {
(void) env;
object *arg = first(args);
return (floatp(arg)) ? arg : makefloat((float)(arg->integer));
}
object *fn_floatp (object *args, object *env) {
(void) env;
return floatp(first(args)) ? tee : nil;
}
object *fn_sin (object *args, object *env) {
(void) env;
return makefloat(sin(checkintfloat(SIN, first(args))));
}
object *fn_cos (object *args, object *env) {
(void) env;
return makefloat(cos(checkintfloat(COS, first(args))));
}
object *fn_tan (object *args, object *env) {
(void) env;
return makefloat(tan(checkintfloat(TAN, first(args))));
}
object *fn_asin (object *args, object *env) {
(void) env;
return makefloat(asin(checkintfloat(ASIN, first(args))));
}
object *fn_acos (object *args, object *env) {
(void) env;
return makefloat(acos(checkintfloat(ACOS, first(args))));
}
object *fn_atan (object *args, object *env) {
(void) env;
object *arg = first(args);
float div = 1.0;
args = cdr(args);
if (args != NULL) div = checkintfloat(ATAN, first(args));
return makefloat(atan2(checkintfloat(ATAN, arg), div));
}
object *fn_sinh (object *args, object *env) {
(void) env;
return makefloat(sinh(checkintfloat(SINH, first(args))));
}
object *fn_cosh (object *args, object *env) {
(void) env;
return makefloat(cosh(checkintfloat(COSH, first(args))));
}
object *fn_tanh (object *args, object *env) {
(void) env;
return makefloat(tanh(checkintfloat(TANH, first(args))));
}
object *fn_exp (object *args, object *env) {
(void) env;
return makefloat(exp(checkintfloat(EXP, first(args))));
}
object *fn_sqrt (object *args, object *env) {
(void) env;
return makefloat(sqrt(checkintfloat(SQRT, first(args))));
}
object *fn_log (object *args, object *env) {
(void) env;
object *arg = first(args);
float fresult = log(checkintfloat(LOG, arg));
args = cdr(args);
if (args == NULL) return makefloat(fresult);
else return makefloat(fresult / log(checkintfloat(LOG, first(args))));
}
int intpower (int base, int exp) {
int result = 1;
while (exp) {
if (exp & 1) result = result * base;
exp = exp / 2;
base = base * base;
}
return result;
}
object *fn_expt (object *args, object *env) {
(void) env;
object *arg1 = first(args); object *arg2 = second(args);
float float1 = checkintfloat(EXPT, arg1);
float value = log(abs(float1)) * checkintfloat(EXPT, arg2);
if (integerp(arg1) && integerp(arg2) && ((arg2->integer) > 0) && (abs(value) < 21.4875))
return number(intpower(arg1->integer, arg2->integer));
if (float1 < 0) error2(EXPT, PSTR("invalid result"));
return makefloat(exp(value));
}
object *fn_ceiling (object *args, object *env) {
(void) env;
object *arg = first(args);
args = cdr(args);
if (args != NULL) return number(ceil(checkintfloat(CEILING, arg) / checkintfloat(CEILING, first(args))));
else return number(ceil(checkintfloat(CEILING, arg)));
}
object *fn_floor (object *args, object *env) {
(void) env;
object *arg = first(args);
args = cdr(args);
if (args != NULL) return number(floor(checkintfloat(FLOOR, arg) / checkintfloat(FLOOR, first(args))));
else return number(floor(checkintfloat(FLOOR, arg)));
}
object *fn_truncate (object *args, object *env) {
(void) env;
object *arg = first(args);
args = cdr(args);
if (args != NULL) return number((int)(checkintfloat(TRUNCATE, arg) / checkintfloat(TRUNCATE, first(args))));
else return number((int)(checkintfloat(TRUNCATE, arg)));
}
int myround (float number) {
return (number >= 0) ? (int)(number + 0.5) : (int)(number - 0.5);
}
object *fn_round (object *args, object *env) {
(void) env;
object *arg = first(args);
args = cdr(args);
if (args != NULL) return number(myround(checkintfloat(ROUND, arg) / checkintfloat(ROUND, first(args))));
else return number(myround(checkintfloat(ROUND, arg)));
}
// Characters
object *fn_char (object *args, object *env) {
(void) env;
object *arg = first(args);
if (!stringp(arg)) error(CHAR, notastring, arg);
char c = nthchar(arg, checkinteger(CHAR, second(args)));
if (c == 0) error2(CHAR, PSTR("index out of range"));
return character(c);
}
object *fn_charcode (object *args, object *env) {
(void) env;
return number(checkchar(CHARCODE, first(args)));
}
object *fn_codechar (object *args, object *env) {
(void) env;
return character(checkinteger(CODECHAR, first(args)));
}
object *fn_characterp (object *args, object *env) {
(void) env;
return characterp(first(args)) ? tee : nil;
}
// Strings
object *fn_stringp (object *args, object *env) {
(void) env;
return stringp(first(args)) ? tee : nil;
}
bool stringcompare (symbol_t name, object *args, bool lt, bool gt, bool eq) {
object *arg1 = first(args); if (!stringp(arg1)) error(name, notastring, arg1);
object *arg2 = second(args); if (!stringp(arg2)) error(name, notastring, arg2);
arg1 = cdr(arg1);
arg2 = cdr(arg2);
while ((arg1 != NULL) || (arg2 != NULL)) {
if (arg1 == NULL) return lt;
if (arg2 == NULL) return gt;
if (arg1->chars < arg2->chars) return lt;
if (arg1->chars > arg2->chars) return gt;
arg1 = car(arg1);
arg2 = car(arg2);
}
return eq;
}
object *fn_stringeq (object *args, object *env) {
(void) env;
return stringcompare(STRINGEQ, args, false, false, true) ? tee : nil;
}
object *fn_stringless (object *args, object *env) {
(void) env;
return stringcompare(STRINGLESS, args, true, false, false) ? tee : nil;
}
object *fn_stringgreater (object *args, object *env) {
(void) env;
return stringcompare(STRINGGREATER, args, false, true, false) ? tee : nil;
}
object *fn_sort (object *args, object *env) {
if (first(args) == NULL) return nil;
object *list = cons(nil,first(args));
push(list,GCStack);
object *predicate = second(args);
object *compare = cons(NULL, cons(NULL, NULL));
push(compare,GCStack);
object *ptr = cdr(list);
while (cdr(ptr) != NULL) {
object *go = list;
while (go != ptr) {
car(compare) = car(cdr(ptr));
car(cdr(compare)) = car(cdr(go));
if (apply(SORT, predicate, compare, env)) break;
go = cdr(go);
}
if (go != ptr) {
object *obj = cdr(ptr);
cdr(ptr) = cdr(obj);
cdr(obj) = cdr(go);
cdr(go) = obj;
} else ptr = cdr(ptr);
}
pop(GCStack); pop(GCStack);
return cdr(list);
}
object *fn_stringfn (object *args, object *env) {
(void) env;
object *arg = first(args);
int type = arg->type;
if (type == STRING) return arg;
object *obj = myalloc();
obj->type = STRING;
if (type == CHARACTER) {
object *cell = myalloc();
cell->car = NULL;
uint8_t shift = (sizeof(int)-1)*8;
cell->chars = (arg->chars)<<shift;
obj->cdr = cell;
} else if (type == SYMBOL) {
char *s = symbolname(arg->name);
char ch = *s++;
object *head = NULL;
int chars = 0;
while (ch) {
if (ch == '\\') ch = *s++;
buildstring(ch, &chars, &head);
ch = *s++;
}
obj->cdr = head;
} else error(STRINGFN, PSTR("can't convert to string"), arg);
return obj;
}
object *fn_concatenate (object *args, object *env) {
(void) env;
object *arg = first(args);
symbol_t name = arg->name;
if (name != STRINGFN) error2(CONCATENATE, PSTR("only supports strings"));
args = cdr(args);
object *result = myalloc();
result->type = STRING;
object *head = NULL;
int chars = 0;
while (args != NULL) {
object *obj = first(args);
if (!stringp(obj)) error(CONCATENATE, notastring, obj);
obj = cdr(obj);
while (obj != NULL) {
int quad = obj->chars;
while (quad != 0) {
char ch = quad>>((sizeof(int)-1)*8) & 0xFF;
buildstring(ch, &chars, &head);
quad = quad<<8;
}
obj = car(obj);
}
args = cdr(args);
}
result->cdr = head;
return result;
}
object *fn_subseq (object *args, object *env) {
(void) env;
object *arg = first(args);
if (!stringp(arg)) error(SUBSEQ, notastring, arg);
int start = checkinteger(SUBSEQ, second(args));
int end;
args = cddr(args);
if (args != NULL) end = checkinteger(SUBSEQ, car(args)); else end = stringlength(arg);
object *result = myalloc();
result->type = STRING;
object *head = NULL;
int chars = 0;
for (int i=start; i<end; i++) {
char ch = nthchar(arg, i);
if (ch == 0) error2(SUBSEQ, PSTR("index out of range"));
buildstring(ch, &chars, &head);
}
result->cdr = head;
return result;
}
object *fn_readfromstring (object *args, object *env) {
(void) env;
object *arg = first(args);
if (!stringp(arg)) error(READFROMSTRING, notastring, arg);
GlobalString = arg;
GlobalStringIndex = 0;
return read(gstr);
}
object *fn_princtostring (object *args, object *env) {
(void) env;
object *arg = first(args);
object *obj = startstring(PRINCTOSTRING);
prin1object(arg, pstr);
obj->cdr = GlobalString;
return obj;
}
object *fn_prin1tostring (object *args, object *env) {
(void) env;
object *arg = first(args);
object *obj = startstring(PRIN1TOSTRING);
printobject(arg, pstr);
obj->cdr = GlobalString;
return obj;
}
// Bitwise operators
object *fn_logand (object *args, object *env) {
(void) env;
int result = -1;
while (args != NULL) {
result = result & checkinteger(LOGAND, first(args));
args = cdr(args);
}
return number(result);
}
object *fn_logior (object *args, object *env) {
(void) env;
int result = 0;
while (args != NULL) {
result = result | checkinteger(LOGIOR, first(args));
args = cdr(args);
}
return number(result);
}
object *fn_logxor (object *args, object *env) {
(void) env;
int result = 0;
while (args != NULL) {
result = result ^ checkinteger(LOGXOR, first(args));
args = cdr(args);
}
return number(result);
}
object *fn_lognot (object *args, object *env) {
(void) env;
int result = checkinteger(LOGNOT, car(args));
return number(~result);
}
object *fn_ash (object *args, object *env) {
(void) env;
int value = checkinteger(ASH, first(args));
int count = checkinteger(ASH, second(args));
if (count >= 0) return number(value << count);
else return number(value >> abs(count));
}
object *fn_logbitp (object *args, object *env) {
(void) env;
int index = checkinteger(LOGBITP, first(args));
int value = checkinteger(LOGBITP, second(args));
return (bitRead(value, index) == 1) ? tee : nil;
}
// System functions
object *fn_eval (object *args, object *env) {
return eval(first(args), env);
}
object *fn_globals (object *args, object *env) {
(void) args;
if (GlobalEnv == NULL) return nil;
return fn_mapcar(cons(symbol(CAR),cons(GlobalEnv,nil)), env);
}
object *fn_locals (object *args, object *env) {
(void) args;
return env;
}
object *fn_makunbound (object *args, object *env) {
(void) env;
object *var = first(args);
if (!symbolp(var)) error(MAKUNBOUND, notasymbol, var);
delassoc(var, &GlobalEnv);
return var;
}
object *fn_break (object *args, object *env) {
(void) args;
pfstring(PSTR("\rBreak!\r"), pserial);
BreakLevel++;
repl(env);
BreakLevel--;
return nil;
}
object *fn_read (object *args, object *env) {
(void) env;
gfun_t gfun = gstreamfun(args);
return read(gfun);
}
object *fn_prin1 (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
printobject(obj, pfun);
return obj;
}
object *fn_print (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
pln(pfun);
printobject(obj, pfun);
pfun(' ');
return obj;
}
object *fn_princ (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
prin1object(obj, pfun);
return obj;
}
object *fn_terpri (object *args, object *env) {
(void) env;
pfun_t pfun = pstreamfun(args);
pln(pfun);
return nil;
}
object *fn_readbyte (object *args, object *env) {
(void) env;
gfun_t gfun = gstreamfun(args);
int c = gfun();
return (c == -1) ? nil : number(c);
}
object *fn_readline (object *args, object *env) {
(void) env;
gfun_t gfun = gstreamfun(args);
return readstring('\n', gfun);
}
object *fn_writebyte (object *args, object *env) {
(void) env;
int value = checkinteger(WRITEBYTE, first(args));
pfun_t pfun = pstreamfun(cdr(args));
(pfun)(value);
return nil;
}
object *fn_writestring (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
char temp = Flags;
clrflag(PRINTREADABLY);
printstring(obj, pfun);
Flags = temp;
return nil;
}
object *fn_writeline (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
char temp = Flags;
clrflag(PRINTREADABLY);
printstring(obj, pfun);
pln(pfun);
Flags = temp;
return nil;
}
object *fn_restarti2c (object *args, object *env) {
(void) env;
int stream = first(args)->integer;
args = cdr(args);
int read = 0; // Write
I2CCount = 0;
if (args != NULL) {
object *rw = first(args);
if (integerp(rw)) I2CCount = rw->integer;
read = (rw != NULL);
}
int address = stream & 0xFF;
if (stream>>8 != I2CSTREAM) error2(RESTARTI2C, PSTR("not an i2c stream"));
return I2Crestart(address, read) ? tee : nil;
}
object *fn_gc (object *obj, object *env) {
int initial = Freespace;
unsigned long start = micros();
gc(obj, env);
unsigned long elapsed = micros() - start;
pfstring(PSTR("Space: "), pserial);
pint(Freespace - initial, pserial);
pfstring(PSTR(" bytes, Time: "), pserial);
pint(elapsed, pserial);
pfstring(PSTR(" us\r"), pserial);
return nil;
}
object *fn_room (object *args, object *env) {
(void) args, (void) env;
return number(Freespace);
}
object *fn_saveimage (object *args, object *env) {
if (args != NULL) args = eval(first(args), env);
return number(saveimage(args));
}
object *fn_loadimage (object *args, object *env) {
(void) env;
if (args != NULL) args = first(args);
return number(loadimage(args));
}
object *fn_cls (object *args, object *env) {
(void) args, (void) env;
pserial(12);
return nil;
}
// Arduino procedures
object *fn_pinmode (object *args, object *env) {
(void) env;
int pin = checkinteger(PINMODE, first(args));
PinMode pm = INPUT;
object *mode = second(args);
if (integerp(mode)) {
int nmode = mode->integer;
if (nmode == 1) pm = OUTPUT; else if (nmode == 2) pm = INPUT_PULLUP;
#if defined(INPUT_PULLDOWN)
else if (nmode == 4) pm = INPUT_PULLDOWN;
#endif
} else if (mode != nil) pm = OUTPUT;
pinMode(pin, pm);
return nil;
}
object *fn_digitalread (object *args, object *env) {
(void) env;
int pin = checkinteger(DIGITALREAD, first(args));
if (digitalRead(pin) != 0) return tee; else return nil;
}
object *fn_digitalwrite (object *args, object *env) {
(void) env;
int pin = checkinteger(DIGITALWRITE, first(args));
object *mode = second(args);
if (integerp(mode)) digitalWrite(pin, mode->integer ? HIGH : LOW);
else digitalWrite(pin, (mode != nil) ? HIGH : LOW);
return mode;
}
object *fn_analogread (object *args, object *env) {
(void) env;
int pin = checkinteger(ANALOGREAD, first(args));
checkanalogread(pin);
return number(analogRead(pin));
}
object *fn_analogwrite (object *args, object *env) {
(void) env;
int pin = checkinteger(ANALOGWRITE, first(args));
checkanalogwrite(pin);
object *value = second(args);
analogWrite(pin, checkinteger(ANALOGWRITE, value));
return value;
}
object *fn_delay (object *args, object *env) {
(void) env;
object *arg1 = first(args);
delay(checkinteger(DELAY, arg1));
return arg1;
}
object *fn_millis (object *args, object *env) {
(void) args, (void) env;
return number(millis());
}
object *fn_sleep (object *args, object *env) {
(void) env;
object *arg1 = first(args);
sleep(checkinteger(SLEEP, arg1));
return arg1;
}
object *fn_note (object *args, object *env) {
(void) env;
static int pin = 255;
if (args != NULL) {
pin = checkinteger(NOTE, first(args));
int note = 0;
if (cddr(args) != NULL) note = checkinteger(NOTE, second(args));
int octave = 0;
if (cddr(args) != NULL) octave = checkinteger(NOTE, third(args));
playnote(pin, note, octave);
} else nonote(pin);
return nil;
}
// Tree Editor
object *fn_edit (object *args, object *env) {
object *fun = first(args);
object *pair = findvalue(fun, env);
clrflag(EXITEDITOR);
object *arg = edit(eval(fun, env));
cdr(pair) = arg;
return arg;
}
object *edit (object *fun) {
while (1) {
if (tstflag(EXITEDITOR)) return fun;
char c = gserial();
if (c == 'q') setflag(EXITEDITOR);
else if (c == 'b') return fun;
else if (c == 'r') fun = read(gserial);
else if (c == '\n') { pfl(pserial); superprint(fun, 0, pserial); pln(pserial); }
else if (c == 'c') fun = cons(read(gserial), fun);
else if (atom(fun)) pserial('!');
else if (c == 'd') fun = cons(car(fun), edit(cdr(fun)));
else if (c == 'a') fun = cons(edit(car(fun)), cdr(fun));
else if (c == 'x') fun = cdr(fun);
else pserial('?');
}
}
// Pretty printer
object *fn_pprint (object *args, object *env) {
(void) env;
object *obj = first(args);
pfun_t pfun = pstreamfun(cdr(args));
#if defined(gfxsupport)
if (pfun == gfxwrite) ppwidth = GFXPPWIDTH;
#endif
pln(pfun);
superprint(obj, 0, pfun);
ppwidth = PPWIDTH;
return symbol(NOTHING);
}
object *fn_pprintall (object *args, object *env) {
(void) env;
pfun_t pfun = pstreamfun(args);
#if defined(gfxsupport)
if (pfun == gfxwrite) ppwidth = GFXPPWIDTH;
#endif
object *globals = GlobalEnv;
while (globals != NULL) {
object *pair = first(globals);
object *var = car(pair);
object *val = cdr(pair);
pln(pfun);
if (consp(val) && symbolp(car(val)) && car(val)->name == LAMBDA) {
superprint(cons(symbol(DEFUN), cons(var, cdr(val))), 0, pfun);
} else if (consp(val) && car(val)->type == CODE) {
superprint(cons(symbol(DEFCODE), cons(var, cdr(val))), 0, pfun);
} else {
superprint(cons(symbol(DEFVAR), cons(var, cons(quote(val), NULL))), 0, pserial);
}
pln(pfun);
testescape();
globals = cdr(globals);
}
ppwidth = PPWIDTH;
return symbol(NOTHING);
}
// Format
void formaterr (object *formatstr, PGM_P string, uint8_t p) {
pln(pserial); indent(4, ' ', pserial); printstring(formatstr, pserial); pln(pserial);
indent(p+5, ' ', pserial); pserial('^');
errorsub(FORMAT, string);
pln(pserial);
GCStack = NULL;
longjmp(exception, 1);
}
object *fn_format (object *args, object *env) {
(void) env;
pfun_t pfun = pserial;
object *output = first(args);
object *obj;
if (output == nil) { obj = startstring(FORMAT); pfun = pstr; }
else if (output != tee) pfun = pstreamfun(args);
object *formatstr = second(args);
if (!stringp(formatstr)) error(FORMAT, notastring, formatstr);
object *save = NULL;
args = cddr(args);
int len = stringlength(formatstr);
uint8_t n = 0, width = 0, w, bra = 0;
char pad = ' ';
bool tilde = false, comma, quote;
while (n < len) {
char ch = nthchar(formatstr, n);
char ch2 = ch & ~0x20; // force to upper case
if (tilde) {
if (comma && quote) { pad = ch; comma = false, quote = false; }
else if (ch == '\'') {
if (comma) quote = true;
else formaterr(formatstr, PSTR("quote not valid"), n);
}
else if (ch == '~') { pfun('~'); tilde = false; }
else if (ch >= '0' && ch <= '9') width = width*10 + ch - '0';
else if (ch == ',') comma = true;
else if (ch == '%') { pln(pfun); tilde = false; }
else if (ch == '&') { pfl(pfun); tilde = false; }
else if (ch == '{') {
if (save != NULL) formaterr(formatstr, PSTR("can't nest ~{"), n);
if (args == NULL) formaterr(formatstr, noargument, n);
if (!listp(first(args))) formaterr(formatstr, notalist, n);
save = args; args = first(args); bra = n; tilde = false;
}
else if (ch == '}') {
if (save == NULL) formaterr(formatstr, PSTR("no matching ~{"), n);
if (args == NULL) { args = cdr(save); save = NULL; } else n = bra;
tilde = false;
}
else if (ch2 == 'A' || ch2 == 'S' || ch2 == 'D' || ch2 == 'G' || ch2 == 'X') {
if (args == NULL) formaterr(formatstr, noargument, n);
object *arg = first(args); args = cdr(args);
uint8_t aw = atomwidth(arg);
if (width < aw) w = 0; else w = width-aw;
tilde = false;
if (ch2 == 'A') { prin1object(arg, pfun); indent(w, pad, pfun); }
else if (ch2 == 'S') { printobject(arg, pfun); indent(w, pad, pfun); }
else if (ch2 == 'D' || ch2 == 'G') { indent(w, pad, pfun); prin1object(arg, pfun); }
else if (ch2 == 'X' && integerp(arg)) {
uint8_t hw = hexwidth(arg); if (width < hw) w = 0; else w = width-hw;
indent(w, pad, pfun); pinthex(arg->integer, pfun);
} else if (ch2 == 'X') { indent(w, pad, pfun); prin1object(arg, pfun); }
tilde = false;
} else formaterr(formatstr, PSTR("invalid directive"), n);
} else {
if (ch == '~') { tilde = true; pad = ' '; width = 0; comma = false; quote = false; }
else pfun(ch);
}
n++;
}
if (output == nil) { obj->cdr = GlobalString; return obj; }
else return nil;
}
// LispLibrary
object *fn_require (object *args, object *env) {
object *arg = first(args);
object *globals = GlobalEnv;
if (!symbolp(arg)) error(REQUIRE, notasymbol, arg);
while (globals != NULL) {
object *pair = first(globals);
object *var = car(pair);
if (symbolp(var) && var == arg) return nil;
globals = cdr(globals);
}
GlobalStringIndex = 0;
object *line = read(glibrary);
while (line != NULL) {
// Is this the definition we want
int fname = first(line)->name;
if ((fname == DEFUN || fname == DEFVAR) && symbolp(second(line)) && second(line)->name == arg->name) {
eval(line, env);
return tee;
}
line = read(glibrary);
}
return nil;
}
object *fn_listlibrary (object *args, object *env) {
(void) args, (void) env;
GlobalStringIndex = 0;
object *line = read(glibrary);
while (line != NULL) {
int fname = first(line)->name;
if (fname == DEFUN || fname == DEFVAR) {
pstring(symbolname(second(line)->name), pserial); pserial(' ');
}
line = read(glibrary);
}
return symbol(NOTHING);
}
// Graphics functions
object *fn_drawpixel (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t colour = COLOR_WHITE;
if (cddr(args) != NULL) colour = checkinteger(DRAWPIXEL, third(args));
tft.drawPixel(checkinteger(DRAWPIXEL, first(args)), checkinteger(DRAWPIXEL, second(args)), colour);
return nil;
#endif
}
object *fn_drawline (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[4], colour = COLOR_WHITE;
for (int i=0; i<4; i++) { params[i] = checkinteger(DRAWLINE, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(DRAWLINE, car(args));
tft.drawLine(params[0], params[1], params[2], params[3], colour);
return nil;
#endif
}
object *fn_drawrect (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[4], colour = COLOR_WHITE;
for (int i=0; i<4; i++) { params[i] = checkinteger(DRAWRECT, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(DRAWRECT, car(args));
tft.drawRect(params[0], params[1], params[2], params[3], colour);
return nil;
#endif
}
object *fn_fillrect (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[4], colour = COLOR_WHITE;
for (int i=0; i<4; i++) { params[i] = checkinteger(FILLRECT, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(FILLRECT, car(args));
tft.fillRect(params[0], params[1], params[2], params[3], colour);
return nil;
#endif
}
object *fn_drawcircle (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[3], colour = COLOR_WHITE;
for (int i=0; i<3; i++) { params[i] = checkinteger(DRAWCIRCLE, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(DRAWCIRCLE, car(args));
tft.drawCircle(params[0], params[1], params[2], colour);
return nil;
#endif
}
object *fn_fillcircle (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[3], colour = COLOR_WHITE;
for (int i=0; i<3; i++) { params[i] = checkinteger(FILLCIRCLE, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(FILLCIRCLE, car(args));
tft.fillCircle(params[0], params[1], params[2], colour);
return nil;
#endif
}
object *fn_drawroundrect (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[5], colour = COLOR_WHITE;
for (int i=0; i<5; i++) { params[i] = checkinteger(DRAWROUNDRECT, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(DRAWROUNDRECT, car(args));
tft.drawRoundRect(params[0], params[1], params[2], params[3], params[4], colour);
return nil;
#endif
}
object *fn_fillroundrect (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[5], colour = COLOR_WHITE;
for (int i=0; i<5; i++) { params[i] = checkinteger(FILLROUNDRECT, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(FILLROUNDRECT, car(args));
tft.fillRoundRect(params[0], params[1], params[2], params[3], params[4], colour);
return nil;
#endif
}
object *fn_drawtriangle (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[6], colour = COLOR_WHITE;
for (int i=0; i<6; i++) { params[i] = checkinteger(DRAWTRIANGLE, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(DRAWTRIANGLE, car(args));
tft.drawTriangle(params[0], params[1], params[2], params[3], params[4], params[5], colour);
return nil;
#endif
}
object *fn_filltriangle (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t params[6], colour = COLOR_WHITE;
for (int i=0; i<6; i++) { params[i] = checkinteger(FILLTRIANGLE, car(args)); args = cdr(args); }
if (args != NULL) colour = checkinteger(FILLTRIANGLE, car(args));
tft.fillTriangle(params[0], params[1], params[2], params[3], params[4], params[5], colour);
return nil;
#endif
}
object *fn_drawchar (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t colour = COLOR_WHITE, bg = COLOR_BLACK, size = 1;
object *more = cdr(cddr(args));
if (more != NULL) {
colour = checkinteger(DRAWCHAR, car(more));
more = cdr(more);
if (more != NULL) {
bg = checkinteger(DRAWCHAR, car(more));
more = cdr(more);
if (more != NULL) size = checkinteger(DRAWCHAR, car(more));
}
}
tft.drawChar(checkinteger(DRAWCHAR, first(args)), checkinteger(DRAWCHAR, second(args)), checkchar(DRAWCHAR, third(args)),
colour, bg, size);
return nil;
#endif
}
object *fn_setcursor (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
tft.setCursor(checkinteger(SETCURSOR, first(args)), checkinteger(SETCURSOR, second(args)));
return nil;
#endif
}
object *fn_settextcolor (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
if (cdr(args) != NULL) tft.setTextColor(checkinteger(SETTEXTCOLOR, first(args)), checkinteger(SETTEXTCOLOR, second(args)));
else tft.setTextColor(checkinteger(SETTEXTCOLOR, first(args)));
return nil;
#endif
}
object *fn_settextsize (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
tft.setTextSize(checkinteger(SETTEXTSIZE, first(args)));
return nil;
#endif
}
object *fn_settextwrap (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
tft.setTextWrap(first(args) != NULL);
return nil;
#endif
}
object *fn_fillscreen (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
uint16_t colour = COLOR_BLACK;
if (args != NULL) colour = checkinteger(FILLSCREEN, first(args));
tft.fillScreen(colour);
return nil;
#endif
}
object *fn_setrotation (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
tft.setRotation(checkinteger(SETROTATION, first(args)));
return nil;
#endif
}
object *fn_invertdisplay (object *args, object *env) {
#if defined(gfxsupport)
(void) env;
tft.invertDisplay(first(args) != NULL);
return nil;
#endif
}
// Insert your own function definitions here
// Built-in procedure names - stored in PROGMEM
const char string0[] PROGMEM = "nil";
const char string1[] PROGMEM = "t";
const char string2[] PROGMEM = "nothing";
const char string3[] PROGMEM = "&optional";
const char string4[] PROGMEM = ":initial-element";
const char string5[] PROGMEM = "&rest";
const char string6[] PROGMEM = "lambda";
const char string7[] PROGMEM = "let";
const char string8[] PROGMEM = "let*";
const char string9[] PROGMEM = "closure";
const char string10[] PROGMEM = "";
const char string11[] PROGMEM = "quote";
const char string12[] PROGMEM = "defun";
const char string13[] PROGMEM = "defvar";
const char string14[] PROGMEM = "setq";
const char string15[] PROGMEM = "loop";
const char string16[] PROGMEM = "return";
const char string17[] PROGMEM = "push";
const char string18[] PROGMEM = "pop";
const char string19[] PROGMEM = "incf";
const char string20[] PROGMEM = "decf";
const char string21[] PROGMEM = "setf";
const char string22[] PROGMEM = "dolist";
const char string23[] PROGMEM = "dotimes";
const char string24[] PROGMEM = "trace";
const char string25[] PROGMEM = "untrace";
const char string26[] PROGMEM = "for-millis";
const char string27[] PROGMEM = "with-output-to-string";
const char string28[] PROGMEM = "with-serial";
const char string29[] PROGMEM = "with-i2c";
const char string30[] PROGMEM = "with-spi";
const char string31[] PROGMEM = "with-sd-card";
const char string32[] PROGMEM = "with-gfx";
const char string33[] PROGMEM = "defcode";
const char string34[] PROGMEM = "";
const char string35[] PROGMEM = "progn";
const char string36[] PROGMEM = "if";
const char string37[] PROGMEM = "cond";
const char string38[] PROGMEM = "when";
const char string39[] PROGMEM = "unless";
const char string40[] PROGMEM = "case";
const char string41[] PROGMEM = "and";
const char string42[] PROGMEM = "or";
const char string43[] PROGMEM = "";
const char string44[] PROGMEM = "not";
const char string45[] PROGMEM = "null";
const char string46[] PROGMEM = "cons";
const char string47[] PROGMEM = "atom";
const char string48[] PROGMEM = "listp";
const char string49[] PROGMEM = "consp";
const char string50[] PROGMEM = "symbolp";
const char string51[] PROGMEM = "arrayp";
const char string52[] PROGMEM = "boundp";
const char string53[] PROGMEM = "setfn";
const char string54[] PROGMEM = "streamp";
const char string55[] PROGMEM = "eq";
const char string56[] PROGMEM = "car";
const char string57[] PROGMEM = "first";
const char string58[] PROGMEM = "cdr";
const char string59[] PROGMEM = "rest";
const char string60[] PROGMEM = "caar";
const char string61[] PROGMEM = "cadr";
const char string62[] PROGMEM = "second";
const char string63[] PROGMEM = "cdar";
const char string64[] PROGMEM = "cddr";
const char string65[] PROGMEM = "caaar";
const char string66[] PROGMEM = "caadr";
const char string67[] PROGMEM = "cadar";
const char string68[] PROGMEM = "caddr";
const char string69[] PROGMEM = "third";
const char string70[] PROGMEM = "cdaar";
const char string71[] PROGMEM = "cdadr";
const char string72[] PROGMEM = "cddar";
const char string73[] PROGMEM = "cdddr";
const char string74[] PROGMEM = "length";
const char string75[] PROGMEM = "array-dimensions";
const char string76[] PROGMEM = "list";
const char string77[] PROGMEM = "make-array";
const char string78[] PROGMEM = "reverse";
const char string79[] PROGMEM = "nth";
const char string80[] PROGMEM = "aref";
const char string81[] PROGMEM = "assoc";
const char string82[] PROGMEM = "member";
const char string83[] PROGMEM = "apply";
const char string84[] PROGMEM = "funcall";
const char string85[] PROGMEM = "append";
const char string86[] PROGMEM = "mapc";
const char string87[] PROGMEM = "mapcar";
const char string88[] PROGMEM = "mapcan";
const char string89[] PROGMEM = "+";
const char string90[] PROGMEM = "-";
const char string91[] PROGMEM = "*";
const char string92[] PROGMEM = "/";
const char string93[] PROGMEM = "mod";
const char string94[] PROGMEM = "1+";
const char string95[] PROGMEM = "1-";
const char string96[] PROGMEM = "abs";
const char string97[] PROGMEM = "random";
const char string98[] PROGMEM = "max";
const char string99[] PROGMEM = "min";
const char string100[] PROGMEM = "/=";
const char string101[] PROGMEM = "=";
const char string102[] PROGMEM = "<";
const char string103[] PROGMEM = "<=";
const char string104[] PROGMEM = ">";
const char string105[] PROGMEM = ">=";
const char string106[] PROGMEM = "plusp";
const char string107[] PROGMEM = "minusp";
const char string108[] PROGMEM = "zerop";
const char string109[] PROGMEM = "oddp";
const char string110[] PROGMEM = "evenp";
const char string111[] PROGMEM = "integerp";
const char string112[] PROGMEM = "numberp";
const char string113[] PROGMEM = "float";
const char string114[] PROGMEM = "floatp";
const char string115[] PROGMEM = "sin";
const char string116[] PROGMEM = "cos";
const char string117[] PROGMEM = "tan";
const char string118[] PROGMEM = "asin";
const char string119[] PROGMEM = "acos";
const char string120[] PROGMEM = "atan";
const char string121[] PROGMEM = "sinh";
const char string122[] PROGMEM = "cosh";
const char string123[] PROGMEM = "tanh";
const char string124[] PROGMEM = "exp";
const char string125[] PROGMEM = "sqrt";
const char string126[] PROGMEM = "log";
const char string127[] PROGMEM = "expt";
const char string128[] PROGMEM = "ceiling";
const char string129[] PROGMEM = "floor";
const char string130[] PROGMEM = "truncate";
const char string131[] PROGMEM = "round";
const char string132[] PROGMEM = "char";
const char string133[] PROGMEM = "char-code";
const char string134[] PROGMEM = "code-char";
const char string135[] PROGMEM = "characterp";
const char string136[] PROGMEM = "stringp";
const char string137[] PROGMEM = "string=";
const char string138[] PROGMEM = "string<";
const char string139[] PROGMEM = "string>";
const char string140[] PROGMEM = "sort";
const char string141[] PROGMEM = "string";
const char string142[] PROGMEM = "concatenate";
const char string143[] PROGMEM = "subseq";
const char string144[] PROGMEM = "read-from-string";
const char string145[] PROGMEM = "princ-to-string";
const char string146[] PROGMEM = "prin1-to-string";
const char string147[] PROGMEM = "logand";
const char string148[] PROGMEM = "logior";
const char string149[] PROGMEM = "logxor";
const char string150[] PROGMEM = "lognot";
const char string151[] PROGMEM = "ash";
const char string152[] PROGMEM = "logbitp";
const char string153[] PROGMEM = "eval";
const char string154[] PROGMEM = "globals";
const char string155[] PROGMEM = "locals";
const char string156[] PROGMEM = "makunbound";
const char string157[] PROGMEM = "break";
const char string158[] PROGMEM = "read";
const char string159[] PROGMEM = "prin1";
const char string160[] PROGMEM = "print";
const char string161[] PROGMEM = "princ";
const char string162[] PROGMEM = "terpri";
const char string163[] PROGMEM = "read-byte";
const char string164[] PROGMEM = "read-line";
const char string165[] PROGMEM = "write-byte";
const char string166[] PROGMEM = "write-string";
const char string167[] PROGMEM = "write-line";
const char string168[] PROGMEM = "restart-i2c";
const char string169[] PROGMEM = "gc";
const char string170[] PROGMEM = "room";
const char string171[] PROGMEM = "save-image";
const char string172[] PROGMEM = "load-image";
const char string173[] PROGMEM = "cls";
const char string174[] PROGMEM = "pinmode";
const char string175[] PROGMEM = "digitalread";
const char string176[] PROGMEM = "digitalwrite";
const char string177[] PROGMEM = "analogread";
const char string178[] PROGMEM = "analogwrite";
const char string179[] PROGMEM = "delay";
const char string180[] PROGMEM = "millis";
const char string181[] PROGMEM = "sleep";
const char string182[] PROGMEM = "note";
const char string183[] PROGMEM = "edit";
const char string184[] PROGMEM = "pprint";
const char string185[] PROGMEM = "pprintall";
const char string186[] PROGMEM = "format";
const char string187[] PROGMEM = "require";
const char string188[] PROGMEM = "list-library";
const char string189[] PROGMEM = "draw-pixel";
const char string190[] PROGMEM = "draw-line";
const char string191[] PROGMEM = "draw-rect";
const char string192[] PROGMEM = "fill-rect";
const char string193[] PROGMEM = "draw-circle";
const char string194[] PROGMEM = "fill-circle";
const char string195[] PROGMEM = "draw-round-rect";
const char string196[] PROGMEM = "fill-round-rect";
const char string197[] PROGMEM = "draw-triangle";
const char string198[] PROGMEM = "fill-triangle";
const char string199[] PROGMEM = "draw-char";
const char string200[] PROGMEM = "set-cursor";
const char string201[] PROGMEM = "set-text-color";
const char string202[] PROGMEM = "set-text-size";
const char string203[] PROGMEM = "set-text-wrap";
const char string204[] PROGMEM = "fill-screen";
const char string205[] PROGMEM = "set-rotation";
const char string206[] PROGMEM = "invert-display";
// Third parameter is no. of arguments; 1st hex digit is min, 2nd hex digit is max, 0xF is unlimited
const tbl_entry_t lookup_table[] PROGMEM = {
{ string0, NULL, 0x00 },
{ string1, NULL, 0x00 },
{ string2, NULL, 0x00 },
{ string3, NULL, 0x00 },
{ string4, NULL, 0x00 },
{ string5, NULL, 0x00 },
{ string6, NULL, 0x0F },
{ string7, NULL, 0x0F },
{ string8, NULL, 0x0F },
{ string9, NULL, 0x0F },
{ string10, NULL, 0x00 },
{ string11, sp_quote, 0x11 },
{ string12, sp_defun, 0x2F },
{ string13, sp_defvar, 0x12 },
{ string14, sp_setq, 0x2F },
{ string15, sp_loop, 0x0F },
{ string16, sp_return, 0x0F },
{ string17, sp_push, 0x22 },
{ string18, sp_pop, 0x11 },
{ string19, sp_incf, 0x12 },
{ string20, sp_decf, 0x12 },
{ string21, sp_setf, 0x2F },
{ string22, sp_dolist, 0x1F },
{ string23, sp_dotimes, 0x1F },
{ string24, sp_trace, 0x01 },
{ string25, sp_untrace, 0x01 },
{ string26, sp_formillis, 0x1F },
{ string27, sp_withoutputtostring, 0x1F },
{ string28, sp_withserial, 0x1F },
{ string29, sp_withi2c, 0x1F },
{ string30, sp_withspi, 0x1F },
{ string31, sp_withsdcard, 0x2F },
{ string32, sp_withgfx, 0x1F },
{ string33, sp_defcode, 0x0F },
{ string34, NULL, 0x00 },
{ string35, tf_progn, 0x0F },
{ string36, tf_if, 0x23 },
{ string37, tf_cond, 0x0F },
{ string38, tf_when, 0x1F },
{ string39, tf_unless, 0x1F },
{ string40, tf_case, 0x1F },
{ string41, tf_and, 0x0F },
{ string42, tf_or, 0x0F },
{ string43, NULL, 0x00 },
{ string44, fn_not, 0x11 },
{ string45, fn_not, 0x11 },
{ string46, fn_cons, 0x22 },
{ string47, fn_atom, 0x11 },
{ string48, fn_listp, 0x11 },
{ string49, fn_consp, 0x11 },
{ string50, fn_symbolp, 0x11 },
{ string51, fn_arrayp, 0x11 },
{ string52, fn_boundp, 0x11 },
{ string53, fn_setfn, 0x2F },
{ string54, fn_streamp, 0x11 },
{ string55, fn_eq, 0x22 },
{ string56, fn_car, 0x11 },
{ string57, fn_car, 0x11 },
{ string58, fn_cdr, 0x11 },
{ string59, fn_cdr, 0x11 },
{ string60, fn_caar, 0x11 },
{ string61, fn_cadr, 0x11 },
{ string62, fn_cadr, 0x11 },
{ string63, fn_cdar, 0x11 },
{ string64, fn_cddr, 0x11 },
{ string65, fn_caaar, 0x11 },
{ string66, fn_caadr, 0x11 },
{ string67, fn_cadar, 0x11 },
{ string68, fn_caddr, 0x11 },
{ string69, fn_caddr, 0x11 },
{ string70, fn_cdaar, 0x11 },
{ string71, fn_cdadr, 0x11 },
{ string72, fn_cddar, 0x11 },
{ string73, fn_cdddr, 0x11 },
{ string74, fn_length, 0x11 },
{ string75, fn_arraydimensions, 0x11 },
{ string76, fn_list, 0x0F },
{ string77, fn_makearray, 0x13 },
{ string78, fn_reverse, 0x11 },
{ string79, fn_nth, 0x22 },
{ string80, fn_aref, 0x2F },
{ string81, fn_assoc, 0x22 },
{ string82, fn_member, 0x22 },
{ string83, fn_apply, 0x2F },
{ string84, fn_funcall, 0x1F },
{ string85, fn_append, 0x0F },
{ string86, fn_mapc, 0x2F },
{ string87, fn_mapcar, 0x2F },
{ string88, fn_mapcan, 0x2F },
{ string89, fn_add, 0x0F },
{ string90, fn_subtract, 0x1F },
{ string91, fn_multiply, 0x0F },
{ string92, fn_divide, 0x1F },
{ string93, fn_mod, 0x22 },
{ string94, fn_oneplus, 0x11 },
{ string95, fn_oneminus, 0x11 },
{ string96, fn_abs, 0x11 },
{ string97, fn_random, 0x11 },
{ string98, fn_maxfn, 0x1F },
{ string99, fn_minfn, 0x1F },
{ string100, fn_noteq, 0x1F },
{ string101, fn_numeq, 0x1F },
{ string102, fn_less, 0x1F },
{ string103, fn_lesseq, 0x1F },
{ string104, fn_greater, 0x1F },
{ string105, fn_greatereq, 0x1F },
{ string106, fn_plusp, 0x11 },
{ string107, fn_minusp, 0x11 },
{ string108, fn_zerop, 0x11 },
{ string109, fn_oddp, 0x11 },
{ string110, fn_evenp, 0x11 },
{ string111, fn_integerp, 0x11 },
{ string112, fn_numberp, 0x11 },
{ string113, fn_floatfn, 0x11 },
{ string114, fn_floatp, 0x11 },
{ string115, fn_sin, 0x11 },
{ string116, fn_cos, 0x11 },
{ string117, fn_tan, 0x11 },
{ string118, fn_asin, 0x11 },
{ string119, fn_acos, 0x11 },
{ string120, fn_atan, 0x12 },
{ string121, fn_sinh, 0x11 },
{ string122, fn_cosh, 0x11 },
{ string123, fn_tanh, 0x11 },
{ string124, fn_exp, 0x11 },
{ string125, fn_sqrt, 0x11 },
{ string126, fn_log, 0x12 },
{ string127, fn_expt, 0x22 },
{ string128, fn_ceiling, 0x12 },
{ string129, fn_floor, 0x12 },
{ string130, fn_truncate, 0x12 },
{ string131, fn_round, 0x12 },
{ string132, fn_char, 0x22 },
{ string133, fn_charcode, 0x11 },
{ string134, fn_codechar, 0x11 },
{ string135, fn_characterp, 0x11 },
{ string136, fn_stringp, 0x11 },
{ string137, fn_stringeq, 0x22 },
{ string138, fn_stringless, 0x22 },
{ string139, fn_stringgreater, 0x22 },
{ string140, fn_sort, 0x22 },
{ string141, fn_stringfn, 0x11 },
{ string142, fn_concatenate, 0x1F },
{ string143, fn_subseq, 0x23 },
{ string144, fn_readfromstring, 0x11 },
{ string145, fn_princtostring, 0x11 },
{ string146, fn_prin1tostring, 0x11 },
{ string147, fn_logand, 0x0F },
{ string148, fn_logior, 0x0F },
{ string149, fn_logxor, 0x0F },
{ string150, fn_lognot, 0x11 },
{ string151, fn_ash, 0x22 },
{ string152, fn_logbitp, 0x22 },
{ string153, fn_eval, 0x11 },
{ string154, fn_globals, 0x00 },
{ string155, fn_locals, 0x00 },
{ string156, fn_makunbound, 0x11 },
{ string157, fn_break, 0x00 },
{ string158, fn_read, 0x01 },
{ string159, fn_prin1, 0x12 },
{ string160, fn_print, 0x12 },
{ string161, fn_princ, 0x12 },
{ string162, fn_terpri, 0x01 },
{ string163, fn_readbyte, 0x02 },
{ string164, fn_readline, 0x01 },
{ string165, fn_writebyte, 0x12 },
{ string166, fn_writestring, 0x12 },
{ string167, fn_writeline, 0x12 },
{ string168, fn_restarti2c, 0x12 },
{ string169, fn_gc, 0x00 },
{ string170, fn_room, 0x00 },
{ string171, fn_saveimage, 0x01 },
{ string172, fn_loadimage, 0x01 },
{ string173, fn_cls, 0x00 },
{ string174, fn_pinmode, 0x22 },
{ string175, fn_digitalread, 0x11 },
{ string176, fn_digitalwrite, 0x22 },
{ string177, fn_analogread, 0x11 },
{ string178, fn_analogwrite, 0x22 },
{ string179, fn_delay, 0x11 },
{ string180, fn_millis, 0x00 },
{ string181, fn_sleep, 0x11 },
{ string182, fn_note, 0x03 },
{ string183, fn_edit, 0x11 },
{ string184, fn_pprint, 0x12 },
{ string185, fn_pprintall, 0x01 },
{ string186, fn_format, 0x2F },
{ string187, fn_require, 0x11 },
{ string188, fn_listlibrary, 0x00 },
{ string189, fn_drawpixel, 0x23 },
{ string190, fn_drawline, 0x45 },
{ string191, fn_drawrect, 0x45 },
{ string192, fn_fillrect, 0x45 },
{ string193, fn_drawcircle, 0x34 },
{ string194, fn_fillcircle, 0x34 },
{ string195, fn_drawroundrect, 0x56 },
{ string196, fn_fillroundrect, 0x56 },
{ string197, fn_drawtriangle, 0x67 },
{ string198, fn_filltriangle, 0x67 },
{ string199, fn_drawchar, 0x36 },
{ string200, fn_setcursor, 0x22 },
{ string201, fn_settextcolor, 0x12 },
{ string202, fn_settextsize, 0x11 },
{ string203, fn_settextwrap, 0x11 },
{ string204, fn_fillscreen, 0x01 },
{ string205, fn_setrotation, 0x11 },
{ string206, fn_invertdisplay, 0x11 },
};
// Table lookup functions
int builtin (char* n) {
int entry = 0;
while (entry < ENDFUNCTIONS) {
if (strcasecmp(n, (char*)lookup_table[entry].string) == 0)
return entry;
entry++;
}
return ENDFUNCTIONS;
}
int longsymbol (char *buffer) {
char *p = SymbolTable;
int i = 0;
while (strcasecmp(p, buffer) != 0) {p = p + strlen(p) + 1; i++; }
if (p == buffer) {
// Add to symbol table?
char *newtop = SymbolTop + strlen(p) + 1;
if (SYMBOLTABLESIZE - (newtop - SymbolTable) < BUFFERSIZE) error2(0, PSTR("symbol table full"));
SymbolTop = newtop;
}
return i + MAXSYMBOL; // First number unused by radix40
}
intptr_t lookupfn (symbol_t name) {
return (intptr_t)lookup_table[name].fptr;
}
void checkminmax (symbol_t name, int nargs) {
uint8_t minmax = lookup_table[name].minmax;
if (nargs<(minmax >> 4)) error2(name, toofewargs);
if ((minmax & 0x0f) != 0x0f && nargs>(minmax & 0x0f)) error2(name, toomanyargs);
}
char *lookupbuiltin (symbol_t name) {
char *buffer = SymbolTop;
strcpy(buffer, (char *)lookup_table[name].string);
return buffer;
}
char *lookupsymbol (symbol_t name) {
char *p = SymbolTable;
int i = name - MAXSYMBOL;
while (i > 0 && p < SymbolTop) {p = p + strlen(p) + 1; i--; }
if (p == SymbolTop) return NULL; else return p;
}
void deletesymbol (symbol_t name) {
char *p = lookupsymbol(name);
if (p == NULL) return;
char *q = p + strlen(p) + 1;
*p = '\0'; p++;
while (q < SymbolTop) *(p++) = *(q++);
SymbolTop = p;
}
void testescape () {
if (Serial.read() == '~') error2(0, PSTR("escape!"));
}
// Main evaluator
extern uint32_t end; // Bottom of stack
object *eval (object *form, object *env) {
register int *sp asm ("r13");
int TC=0;
EVAL:
// Enough space?
// Serial.println((uint32_t)sp - (uint32_t)&end);
if (((uint32_t)sp - (uint32_t)&end) < STACKDIFF) error2(0, PSTR("Stack overflow"));
if (Freespace <= WORKSPACESIZE>>4) gc(form, env);
// Escape
if (tstflag(ESCAPE)) { clrflag(ESCAPE); error2(0, PSTR("Escape!"));}
if (!tstflag(NOESC)) testescape();
if (form == NULL) return nil;
if (form->type >= NUMBER && form->type <= STRING) return form;
if (symbolp(form)) {
symbol_t name = form->name;
object *pair = value(name, env);
if (pair != NULL) return cdr(pair);
pair = value(name, GlobalEnv);
if (pair != NULL) return cdr(pair);
else if (name <= ENDFUNCTIONS) return form;
error(0, PSTR("undefined"), form);
}
if (form->type == CODE) error2(0, PSTR("can't evaluate CODE header"));
// It's a list
object *function = car(form);
object *args = cdr(form);
if (function == NULL) error(0, PSTR("illegal function"), nil);
if (!listp(args)) error(0, PSTR("can't evaluate a dotted pair"), args);
// List starts with a symbol?
if (symbolp(function)) {
symbol_t name = function->name;
if ((name == LET) || (name == LETSTAR)) {
int TCstart = TC;
object *assigns = first(args);
if (!listp(assigns)) error(name, PSTR("first argument is not a list"), assigns);
object *forms = cdr(args);
object *newenv = env;
push(newenv, GCStack);
while (assigns != NULL) {
object *assign = car(assigns);
if (!consp(assign)) push(cons(assign,nil), newenv);
else if (cdr(assign) == NULL) push(cons(first(assign),nil), newenv);
else push(cons(first(assign),eval(second(assign),env)), newenv);
car(GCStack) = newenv;
if (name == LETSTAR) env = newenv;
assigns = cdr(assigns);
}
env = newenv;
pop(GCStack);
form = tf_progn(forms,env);
TC = TCstart;
goto EVAL;
}
if (name == LAMBDA) {
if (env == NULL) return form;
object *envcopy = NULL;
while (env != NULL) {
object *pair = first(env);
if (pair != NULL) push(pair, envcopy);
env = cdr(env);
}
return cons(symbol(CLOSURE), cons(envcopy,args));
}
if ((name > SPECIAL_FORMS) && (name < TAIL_FORMS)) {
return ((fn_ptr_type)lookupfn(name))(args, env);
}
if ((name > TAIL_FORMS) && (name < FUNCTIONS)) {
form = ((fn_ptr_type)lookupfn(name))(args, env);
TC = 1;
goto EVAL;
}
if (name < SPECIAL_FORMS) error2((uintptr_t)function, PSTR("can't be used as a function"));
}
// Evaluate the parameters - result in head
object *fname = car(form);
int TCstart = TC;
object *head = cons(eval(fname, env), NULL);
push(head, GCStack); // Don't GC the result list
object *tail = head;
form = cdr(form);
int nargs = 0;
while (form != NULL){
object *obj = cons(eval(car(form),env),NULL);
cdr(tail) = obj;
tail = obj;
form = cdr(form);
nargs++;
}
function = car(head);
args = cdr(head);
if (symbolp(function)) {
symbol_t name = function->name;
if (name >= ENDFUNCTIONS) error(0, PSTR("not valid here"), fname);
checkminmax(name, nargs);
object *result = ((fn_ptr_type)lookupfn(name))(args, env);
pop(GCStack);
return result;
}
if (consp(function)) {
if (issymbol(car(function), LAMBDA)) {
form = closure(TCstart, fname->name, NULL, cdr(function), args, &env);
pop(GCStack);
int trace = tracing(fname->name);
if (trace) {
object *result = eval(form, env);
indent((--(TraceDepth[trace-1]))<<1, ' ', pserial);
pint(TraceDepth[trace-1], pserial);
pserial(':'); pserial(' ');
printobject(fname, pserial); pfstring(PSTR(" returned "), pserial);
printobject(result, pserial); pln(pserial);
return result;
} else {
TC = 1;
goto EVAL;
}
}
if (issymbol(car(function), CLOSURE)) {
function = cdr(function);
form = closure(TCstart, fname->name, car(function), cdr(function), args, &env);
pop(GCStack);
TC = 1;
goto EVAL;
}
if (car(function)->type == CODE) {
int n = listlength(DEFCODE, second(function));
if (nargs<n) error2(fname->name, toofewargs);
if (nargs>n) error2(fname->name, toomanyargs);
uint32_t entry = startblock(car(function)) + 1;
pop(GCStack);
return call(entry, n, args, env);
}
}
error(0, PSTR("illegal function"), fname); return nil;
}
// Print functions
inline int maxbuffer (char *buffer) {
return SYMBOLTABLESIZE-(buffer-SymbolTable)-1;
}
void pserial (char c) {
LastPrint = c;
if (c == '\n') Serial.write('\r');
Serial.write(c);
}
const char ControlCodes[] PROGMEM = "Null\0SOH\0STX\0ETX\0EOT\0ENQ\0ACK\0Bell\0Backspace\0Tab\0Newline\0VT\0"
"Page\0Return\0SO\0SI\0DLE\0DC1\0DC2\0DC3\0DC4\0NAK\0SYN\0ETB\0CAN\0EM\0SUB\0Escape\0FS\0GS\0RS\0US\0Space\0";
void pcharacter (char c, pfun_t pfun) {
if (!tstflag(PRINTREADABLY)) pfun(c);
else {
pfun('#'); pfun('\\');
if (c > 32) pfun(c);
else {
const char *p = ControlCodes;
while (c > 0) {p = p + strlen(p) + 1; c--; }
pfstring(p, pfun);
}
}
}
void pstring (char *s, pfun_t pfun) {
while (*s) pfun(*s++);
}
void printstring (object *form, pfun_t pfun) {
if (tstflag(PRINTREADABLY)) pfun('"');
form = cdr(form);
while (form != NULL) {
int chars = form->chars;
for (int i=(sizeof(int)-1)*8; i>=0; i=i-8) {
char ch = chars>>i & 0xFF;
if (tstflag(PRINTREADABLY) && (ch == '"' || ch == '\\')) pfun('\\');
if (ch) pfun(ch);
}
form = car(form);
}
if (tstflag(PRINTREADABLY)) pfun('"');
}
void pfstring (const char *s, pfun_t pfun) {
int p = 0;
while (1) {
char c = s[p++];
if (c == 0) return;
pfun(c);
}
}
void pint (int i, pfun_t pfun) {
int lead = 0;
#if INT_MAX == 32767
int p = 10000;
#else
int p = 1000000000;
#endif
if (i<0) pfun('-');
for (int d=p; d>0; d=d/10) {
int j = i/d;
if (j!=0 || lead || d==1) { pfun(abs(j)+'0'); lead=1;}
i = i - j*d;
}
}
void pinthex (uint32_t i, pfun_t pfun) {
int lead = 0;
#if INT_MAX == 32767
uint32_t p = 0x1000;
#else
uint32_t p = 0x10000000;
#endif
for (uint32_t d=p; d>0; d=d/16) {
uint32_t j = i/d;
if (j!=0 || lead || d==1) { pfun((j<10) ? j+'0' : j+'W'); lead=1;}
i = i - j*d;
}
}
void printhex4 (int i, pfun_t pfun) {
int p = 0x1000;
for (int d=p; d>0; d=d/16) {
int j = i/d;
pfun((j<10) ? j+'0' : j + 'W');
i = i - j*d;
}
pfun(' ');
}
void pmantissa (float f, pfun_t pfun) {
int sig = floor(log10(f));
int mul = pow(10, 5 - sig);
int i = round(f * mul);
bool point = false;
if (i == 1000000) { i = 100000; sig++; }
if (sig < 0) {
pfun('0'); pfun('.'); point = true;
for (int j=0; j < - sig - 1; j++) pfun('0');
}
mul = 100000;
for (int j=0; j<7; j++) {
int d = (int)(i / mul);
pfun(d + '0');
i = i - d * mul;
if (i == 0) {
if (!point) {
for (int k=j; k<sig; k++) pfun('0');
pfun('.'); pfun('0');
}
return;
}
if (j == sig && sig >= 0) { pfun('.'); point = true; }
mul = mul / 10;
}
}
void pfloat (float f, pfun_t pfun) {
if (isnan(f)) { pfstring(PSTR("NaN"), pfun); return; }
if (f == 0.0) { pfun('0'); return; }
if (isinf(f)) { pfstring(PSTR("Inf"), pfun); return; }
if (f < 0) { pfun('-'); f = -f; }
// Calculate exponent
int e = 0;
if (f < 1e-3 || f >= 1e5) {
e = floor(log(f) / 2.302585); // log10 gives wrong result
f = f / pow(10, e);
}
pmantissa (f, pfun);
// Exponent
if (e != 0) {
pfun('e');
pint(e, pfun);
}
}
inline void pln (pfun_t pfun) {
pfun('\n');
}
void pfl (pfun_t pfun) {
if (LastPrint != '\n') pfun('\n');
}
void printobject (object *form, pfun_t pfun) {
if (form == NULL) pfstring(PSTR("nil"), pfun);
else if (listp(form) && issymbol(car(form), CLOSURE)) pfstring(PSTR("<closure>"), pfun);
else if (listp(form)) {
pfun('(');
printobject(car(form), pfun);
form = cdr(form);
while (form != NULL && listp(form)) {
pfun(' ');
printobject(car(form), pfun);
form = cdr(form);
}
if (form != NULL) {
pfstring(PSTR(" . "), pfun);
printobject(form, pfun);
}
pfun(')');
} else if (integerp(form)) pint(form->integer, pfun);
else if (floatp(form)) pfloat(form->single_float, pfun);
else if (symbolp(form)) { if (form->name != NOTHING) pstring(symbolname(form->name), pfun); }
else if (characterp(form)) pcharacter(form->chars, pfun);
else if (stringp(form)) printstring(form, pfun);
else if (arrayp(form)) printarray(form, pfun);
else if (form->type == CODE) pfstring(PSTR("code"), pfun);
else if (streamp(form)) {
pfun('<');
if ((form->integer)>>8 == SPISTREAM) pfstring(PSTR("spi"), pfun);
else if ((form->integer)>>8 == I2CSTREAM) pfstring(PSTR("i2c"), pfun);
else if ((form->integer)>>8 == SDSTREAM) pfstring(PSTR("sd"), pfun);
else pfstring(PSTR("serial"), pfun);
pfstring(PSTR("-stream "), pfun);
pint(form->integer & 0xFF, pfun);
pfun('>');
} else
error2(0, PSTR("Error in print"));
}
void prin1object (object *form, pfun_t pfun) {
char temp = Flags;
clrflag(PRINTREADABLY);
printobject(form, pfun);
Flags = temp;
}
// Read functions
int glibrary () {
if (LastChar) {
char temp = LastChar;
LastChar = 0;
return temp;
}
char c = LispLibrary[GlobalStringIndex++];
return (c != 0) ? c : -1; // -1?
}
void loadfromlibrary (object *env) {
GlobalStringIndex = 0;
object *line = read(glibrary);
while (line != NULL) {
eval(line, env);
line = read(glibrary);
}
}
// For line editor
const int TerminalWidth = 80;
volatile int WritePtr = 0, ReadPtr = 0;
const int KybdBufSize = 333; // 42*8 - 3
char KybdBuf[KybdBufSize];
volatile uint8_t KybdAvailable = 0;
// Parenthesis highlighting
void esc (int p, char c) {
Serial.write('\e'); Serial.write('[');
Serial.write((char)('0'+ p/100));
Serial.write((char)('0'+ (p/10) % 10));
Serial.write((char)('0'+ p % 10));
Serial.write(c);
}
void hilight (char c) {
Serial.write('\e'); Serial.write('['); Serial.write(c); Serial.write('m');
}
void Highlight (int p, int wp, uint8_t invert) {
wp = wp + 2; // Prompt
#if defined (printfreespace)
int f = Freespace;
while (f) { wp++; f=f/10; }
#endif
int line = wp/TerminalWidth;
int col = wp%TerminalWidth;
int targetline = (wp - p)/TerminalWidth;
int targetcol = (wp - p)%TerminalWidth;
int up = line-targetline, left = col-targetcol;
if (p) {
if (up) esc(up, 'A');
if (col > targetcol) esc(left, 'D'); else esc(-left, 'C');
if (invert) hilight('7');
Serial.write('('); Serial.write('\b');
// Go back
if (up) esc(up, 'B'); // Down
if (col > targetcol) esc(left, 'C'); else esc(-left, 'D');
Serial.write('\b'); Serial.write(')');
if (invert) hilight('0');
}
}
void processkey (char c) {
if (c == 27) { setflag(ESCAPE); return; } // Escape key
#if defined(vt100)
static int parenthesis = 0, wp = 0;
// Undo previous parenthesis highlight
Highlight(parenthesis, wp, 0);
parenthesis = 0;
#endif
// Edit buffer
if (c == '\n' || c == '\r') {
pserial('\n');
KybdAvailable = 1;
ReadPtr = 0;
return;
}
if (c == 8 || c == 0x7f) { // Backspace key
if (WritePtr > 0) {
WritePtr--;
Serial.write(8); Serial.write(' '); Serial.write(8);
if (WritePtr) c = KybdBuf[WritePtr-1];
}
} else if (WritePtr < KybdBufSize) {
KybdBuf[WritePtr++] = c;
Serial.write(c);
}
#if defined(vt100)
// Do new parenthesis highlight
if (c == ')') {
int search = WritePtr-1, level = 0;
while (search >= 0 && parenthesis == 0) {
c = KybdBuf[search--];
if (c == ')') level++;
if (c == '(') {
level--;
if (level == 0) {parenthesis = WritePtr-search-1; wp = WritePtr; }
}
}
Highlight(parenthesis, wp, 1);
}
#endif
return;
}
int gserial () {
if (LastChar) {
char temp = LastChar;
LastChar = 0;
return temp;
}
#if defined(lineeditor)
while (!KybdAvailable) {
while (!Serial.available());
char temp = Serial.read();
processkey(temp);
}
if (ReadPtr != WritePtr) return KybdBuf[ReadPtr++];
KybdAvailable = 0;
WritePtr = 0;
return '\n';
#else
while (!Serial.available());
char temp = Serial.read();
if (temp != '\n') pserial(temp);
return temp;
#endif
}
#define issp(x) (x == ' ' || x == '\n' || x == '\r' || x == '\t')
object *nextitem (gfun_t gfun) {
int ch = gfun();
while(issp(ch)) ch = gfun();
if (ch == ';') {
while(ch != '(') ch = gfun();
ch = '(';
}
if (ch == '\n') ch = gfun();
if (ch == -1) return nil;
if (ch == ')') return (object *)KET;
if (ch == '(') return (object *)BRA;
if (ch == '\'') return (object *)QUO;
// Parse string
if (ch == '"') return readstring('"', gfun);
// Parse symbol, character, or number
int index = 0, base = 10, sign = 1;
char *buffer = SymbolTop;
int bufmax = maxbuffer(buffer); // Max index
unsigned int result = 0;
bool isfloat = false;
float fresult = 0.0;
if (ch == '+') {
buffer[index++] = ch;
ch = gfun();
} else if (ch == '-') {
sign = -1;
buffer[index++] = ch;
ch = gfun();
} else if (ch == '.') {
buffer[index++] = ch;
ch = gfun();
if (ch == ' ') return (object *)DOT;
isfloat = true;
}
// Parse reader macros
else if (ch == '#') {
ch = gfun();
char ch2 = ch & ~0x20; // force to upper case
if (ch == '\\') { // Character
base = 0; ch = gfun();
if (issp(ch) || ch == ')' || ch == '(') return character(ch);
else LastChar = ch;
} else if (ch == '|') {
do { while (gfun() != '|'); }
while (gfun() != '#');
return nextitem(gfun);
} else if (ch2 == 'B') base = 2;
else if (ch2 == 'O') base = 8;
else if (ch2 == 'X') base = 16;
else if (ch == '\'') return nextitem(gfun);
else if (ch == '.') {
setflag(NOESC);
object *result = eval(read(gfun), NULL);
clrflag(NOESC);
return result;
}
else if (ch == '(') { LastChar = ch; return readarray(1, read(gfun)); }
else if (ch >= '1' && ch <= '9' && (gfun() & ~0x20) == 'A') return readarray(ch - '0', read(gfun));
else error2(0, PSTR("illegal character after #"));
ch = gfun();
}
int valid; // 0=undecided, -1=invalid, +1=valid
if (ch == '.') valid = 0; else if (digitvalue(ch)<base) valid = 1; else valid = -1;
bool isexponent = false;
int exponent = 0, esign = 1;
buffer[2] = '\0'; buffer[3] = '\0'; buffer[4] = '\0'; buffer[5] = '\0'; // In case symbol is < 5 letters
float divisor = 10.0;
while(!issp(ch) && ch != ')' && ch != '(' && index < bufmax) {
buffer[index++] = ch;
if (base == 10 && ch == '.' && !isexponent) {
isfloat = true;
fresult = result;
} else if (base == 10 && (ch == 'e' || ch == 'E')) {
if (!isfloat) { isfloat = true; fresult = result; }
isexponent = true;
if (valid == 1) valid = 0; else valid = -1;
} else if (isexponent && ch == '-') {
esign = -esign;
} else if (isexponent && ch == '+') {
} else {
int digit = digitvalue(ch);
if (digitvalue(ch)<base && valid != -1) valid = 1; else valid = -1;
if (isexponent) {
exponent = exponent * 10 + digit;
} else if (isfloat) {
fresult = fresult + digit / divisor;
divisor = divisor * 10.0;
} else {
result = result * base + digit;
}
}
ch = gfun();
}
buffer[index] = '\0';
if (ch == ')' || ch == '(') LastChar = ch;
if (isfloat && valid == 1) return makefloat(fresult * sign * pow(10, exponent * esign));
else if (valid == 1) {
if (base == 10 && result > ((unsigned int)INT_MAX+(1-sign)/2))
return makefloat((float)result*sign);
return number(result*sign);
} else if (base == 0) {
if (index == 1) return character(buffer[0]);
const char* p = ControlCodes; char c = 0;
while (c < 33) {
if (strcasecmp(buffer, p) == 0) return character(c);
p = p + strlen(p) + 1; c++;
}
error2(0, PSTR("unknown character"));
}
int x = builtin(buffer);
if (x == NIL) return nil;
if (x < ENDFUNCTIONS) return newsymbol(x);
else if (index <= 6 && valid40(buffer)) return newsymbol(pack40(buffer));
else return newsymbol(longsymbol(buffer));
}
object *readrest (gfun_t gfun) {
object *item = nextitem(gfun);
object *head = NULL;
object *tail = NULL;
while (item != (object *)KET) {
if (item == (object *)BRA) {
item = readrest(gfun);
} else if (item == (object *)QUO) {
item = cons(symbol(QUOTE), cons(read(gfun), NULL));
} else if (item == (object *)DOT) {
tail->cdr = read(gfun);
if (readrest(gfun) != NULL) error2(0, PSTR("malformed list"));
return head;
} else {
object *cell = cons(item, NULL);
if (head == NULL) head = cell;
else tail->cdr = cell;
tail = cell;
item = nextitem(gfun);
}
}
return head;
}
object *read (gfun_t gfun) {
object *item = nextitem(gfun);
if (item == (object *)KET) error2(0, PSTR("incomplete list"));
if (item == (object *)BRA) return readrest(gfun);
if (item == (object *)DOT) return read(gfun);
if (item == (object *)QUO) return cons(symbol(QUOTE), cons(read(gfun), NULL));
return item;
}
// Setup
void initgfx () {
#if defined(gfxsupport)
tft.initR(INITR_BLACKTAB);
tft.setRotation(1);
pinMode(TFT_BACKLIGHT, OUTPUT);
digitalWrite(TFT_BACKLIGHT, HIGH);
tft.fillScreen(ST77XX_BLACK);
#endif
}
void initenv () {
GlobalEnv = NULL;
tee = symbol(TEE);
}
void setup () {
Serial.begin(9600);
int start = millis();
while ((millis() - start) < 5000) { if (Serial) break; }
initworkspace();
initenv();
initsleep();
initgfx();
pfstring(PSTR("uLisp 3.2 "), pserial); pln(pserial);
}
// Read/Evaluate/Print loop
void repl (object *env) {
for (;;) {
randomSeed(micros());
gc(NULL, env);
#if defined (printfreespace)
pint(Freespace, pserial);
#endif
if (BreakLevel) {
pfstring(PSTR(" : "), pserial);
pint(BreakLevel, pserial);
}
pfstring(PSTR("> "), pserial);
object *line = read(gserial);
if (BreakLevel && line == nil) { pln(pserial); return; }
if (line == (object *)KET) error2(0, PSTR("unmatched right bracket"));
push(line, GCStack);
pfl(pserial);
line = eval(line, env);
pfl(pserial);
printobject(line, pserial);
pop(GCStack);
pfl(pserial);
pln(pserial);
}
}
void loop () {
if (!setjmp(exception)) {
#if defined(resetautorun)
volatile int autorun = 12; // Fudge to keep code size the same
#else
volatile int autorun = 13;
#endif
if (autorun == 12) autorunimage();
}
// Come here after error
delay(100); while (Serial.available()) Serial.read();
clrflag(NOESC);
for (int i=0; i<TRACEMAX; i++) TraceDepth[i] = 0;
#if defined(sdcardsupport)
SDpfile.close(); SDgfile.close();
#endif
#if defined(lisplibrary)
if (!tstflag(LIBRARYLOADED)) { setflag(LIBRARYLOADED); loadfromlibrary(NULL); }
#endif
repl(NULL);
}
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