kuroko/chunk.c

54 lines
1.5 KiB
C

#include "chunk.h"
#include "memory.h"
void krk_initChunk(KrkChunk * chunk) {
chunk->count = 0;
chunk->capacity = 0;
chunk->code = NULL;
chunk->lines = NULL;
krk_initValueArray(&chunk->constants);
}
void krk_writeChunk(KrkChunk * chunk, uint8_t byte, size_t line) {
if (chunk->capacity < chunk->count + 1) {
int old = chunk->capacity;
chunk->capacity = GROW_CAPACITY(old);
chunk->code = GROW_ARRAY(uint8_t, chunk->code, old, chunk->capacity);
chunk->lines = GROW_ARRAY(size_t, chunk->lines, old, chunk->capacity);
}
chunk->code[chunk->count] = byte;
chunk->lines[chunk->count] = line;
chunk->count++;
}
void krk_freeChunk(KrkChunk * chunk) {
FREE_ARRAY(uint8_t, chunk->code, chunk->capacity);
FREE_ARRAY(size_t, chunk->lines, chunk->capacity);
krk_freeValueArray(&chunk->constants);
krk_initChunk(chunk);
}
size_t krk_addConstant(KrkChunk * chunk, KrkValue value) {
krk_writeValueArray(&chunk->constants, value);
return chunk->constants.count - 1;
}
void krk_emitConstant(KrkChunk * chunk, size_t ind, size_t line) {
if (ind >= 256) {
krk_writeChunk(chunk, OP_CONSTANT_LONG, line);
krk_writeChunk(chunk, 0xFF & (ind >> 16), line);
krk_writeChunk(chunk, 0xFF & (ind >> 8), line);
krk_writeChunk(chunk, 0xFF & (ind >> 0), line);
} else {
krk_writeChunk(chunk, OP_CONSTANT, line);
krk_writeChunk(chunk, ind, line);
}
}
size_t krk_writeConstant(KrkChunk * chunk, KrkValue value, size_t line) {
size_t ind = krk_addConstant(chunk, value);
krk_emitConstant(chunk, ind, line);
return ind;
}