mirror of
https://github.com/krgamestudios/Toy.git
synced 2026-04-15 14:54:07 +10:00
Kayne Ruse
7b453bc35f
The following structures are now more independant: - Toy_Array - Toy_Stack - Toy_Bucket - Toy_String I reworked a lot of the memory allocation, so now there are more direct calls to malloc() or realloc(), rather than relying on the macros from toy_memory.h. I've also split toy_memory into proper array and bucket files, because it makes more sense this way, rather than having them both jammed into one file. This means the eventual hashtable structure can also stand on its own. Toy_Array is a new wrapper around raw array pointers, and all of the structures have their metadata embedded into their allocated memory now, using variable length array members. A lot of 'capacity' and 'count' variables were changed to 'size_t' types, but this doesn't seem to be a problem anywhere. If the workflow fails, then I'll leave it for tonight - I'm too tired, and I don't want to overdo myself.
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
#include "toy_bytecode.h"
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#include "toy_console_colors.h"
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#include "toy_routine.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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//utils
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static void expand(Toy_Bytecode* bc, size_t amount) {
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if (bc->count + amount > bc->capacity) {
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while (bc->count + amount > bc->capacity) { //expand as much as needed
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bc->capacity = bc->capacity < 8 ? 8 : bc->capacity * 2;
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}
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bc->ptr = realloc(bc->ptr, bc->capacity);
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if (bc->ptr == NULL) {
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fprintf(stderr, TOY_CC_ERROR "ERROR: Failed to allocate a 'Toy_Bytecode' of %d capacity\n" TOY_CC_RESET, (int)(bc->capacity));
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exit(1);
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}
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}
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}
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static void emitByte(Toy_Bytecode* bc, unsigned char byte) {
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expand(bc, 1);
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bc->ptr[bc->count++] = byte;
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}
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//bytecode
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static void writeBytecodeHeader(Toy_Bytecode* bc) {
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emitByte(bc, TOY_VERSION_MAJOR);
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emitByte(bc, TOY_VERSION_MINOR);
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emitByte(bc, TOY_VERSION_PATCH);
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//check strlen for the build string
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const char* build = Toy_private_version_build();
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size_t len = strlen(build) + 1;
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//BUGFIX: ensure the end of the header has 4-byte alignment
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if (len % 4 != 1) { //1 to fill the 4th byte above
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len += 4 - (len % 4) +1; //ceil
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}
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expand(bc, len);
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memcpy(bc->ptr + bc->count, build, len);
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bc->count += len;
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bc->ptr[bc->count] = '\0';
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}
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static void writeBytecodeBody(Toy_Bytecode* bc, Toy_Ast* ast) {
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//a 'module' is a routine that runs at the root-level of a file
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//since routines can be recursive, this distinction is important
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//eventually, the bytecode may support multiple modules packed into one file
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void* module = Toy_compileRoutine(ast);
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size_t len = (size_t)(((int*)module)[0]);
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expand(bc, len);
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memcpy(bc->ptr + bc->count, module, len);
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bc->count += len;
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}
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//exposed functions
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Toy_Bytecode Toy_compileBytecode(Toy_Ast* ast) {
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//setup
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Toy_Bytecode bc;
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bc.ptr = NULL;
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bc.capacity = 0;
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bc.count = 0;
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//build
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writeBytecodeHeader(&bc);
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writeBytecodeBody(&bc, ast);
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return bc;
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}
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void Toy_freeBytecode(Toy_Bytecode bc) {
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free(bc.ptr);
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}
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