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