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Introduce PieceTable-based buffer backend (Phase 1)

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- Added `PieceTable` class for efficient text manipulation and implemented core editing APIs (`Insert`, `Delete`, `Find`, etc.).
- Integrated `PieceTable` into `Buffer` class with an adapter for rows caching.
- Enabled seamless switching between legacy row-based and new PieceTable-backed editing via `KTE_USE_BUFFER_PIECE_TABLE`.
- Updated file I/O, line-based queries, and cursor operations to support PieceTable-based storage.
- Lazy rebuilding of line index and improved management of edit state for performance.
This commit is contained in:
Kyle Isom
2025-12-05 15:29:35 -08:00
parent 222f73252b
commit afb6888c31
6 changed files with 722 additions and 73 deletions
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10
CMakeLists.txt
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@@ -12,6 +12,7 @@ set(BUILD_GUI ON CACHE BOOL "Enable building the graphical version.")
set(KTE_USE_QT OFF CACHE BOOL "Build the QT frontend instead of ImGui.")
set(BUILD_TESTS OFF CACHE BOOL "Enable building test programs.")
option(KTE_USE_PIECE_TABLE "Use PieceTable instead of GapBuffer implementation" ON)
option(KTE_USE_BUFFER_PIECE_TABLE "Use PieceTable inside Buffer adapter (Phase 2)" OFF)
set(KTE_FONT_SIZE "18.0" CACHE STRING "Default font size for GUI")
option(KTE_UNDO_DEBUG "Enable undo instrumentation logs" OFF)
option(KTE_ENABLE_TREESITTER "Enable optional Tree-sitter highlighter adapter" OFF)
@@ -273,6 +274,9 @@ add_executable(kte
if (KTE_USE_PIECE_TABLE)
target_compile_definitions(kte PRIVATE KTE_USE_PIECE_TABLE=1)
endif ()
if (KTE_USE_BUFFER_PIECE_TABLE)
target_compile_definitions(kte PRIVATE KTE_USE_BUFFER_PIECE_TABLE=1)
endif ()
if (KTE_UNDO_DEBUG)
target_compile_definitions(kte PRIVATE KTE_UNDO_DEBUG=1)
endif ()
@@ -309,6 +313,9 @@ if (BUILD_TESTS)
if (KTE_USE_PIECE_TABLE)
target_compile_definitions(test_undo PRIVATE KTE_USE_PIECE_TABLE=1)
endif ()
if (KTE_USE_BUFFER_PIECE_TABLE)
target_compile_definitions(test_undo PRIVATE KTE_USE_BUFFER_PIECE_TABLE=1)
endif ()
if (KTE_UNDO_DEBUG)
target_compile_definitions(test_undo PRIVATE KTE_UNDO_DEBUG=1)
@@ -357,6 +364,9 @@ if (${BUILD_GUI})
if (KTE_UNDO_DEBUG)
target_compile_definitions(kge PRIVATE KTE_UNDO_DEBUG=1)
endif ()
if (KTE_USE_BUFFER_PIECE_TABLE)
target_compile_definitions(kge PRIVATE KTE_USE_BUFFER_PIECE_TABLE=1)
endif ()
if (KTE_USE_QT)
target_link_libraries(kge ${CURSES_LIBRARIES} Qt6::Widgets)
else ()