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#include "../include/program.h"
#include "../include/bytecode.h"
#include "../include/command.h"
#ifdef DEBUG
#define GC_DEBUG
#endif
#include <gc.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#define return_if_error(expr) \
{ \
if(!(expr)) { \
result = TSL_PROGRAM_RESULT_ERR; \
goto cleanup; \
} \
}
void tsl_program_init(TslProgram *self) {
GC_INIT(); /* TODO: Remove this */
tsl_buffer_init(&self->function_bytecode_list);
}
void tsl_program_deinit(TslProgram *self) {
TslBytecode *bytecode_writer = tsl_buffer_begin(&self->function_bytecode_list);
TslBytecode *bytecode_writer_end = tsl_buffer_end(&self->function_bytecode_list);
while(bytecode_writer != bytecode_writer_end) {
tsl_bytecode_deinit(bytecode_writer);
++bytecode_writer;
}
tsl_buffer_deinit(&self->function_bytecode_list);
}
static int program_output_temp(char *data, int size, void *userdata) {
(void)size;
(void)userdata;
fputs(data, stdout);
return 1;
}
TslProgramResult tsl_program_run(TslProgram *self) {
TslProgramResult result = TSL_PROGRAM_RESULT_OK;
TslBytecode *file_scope_bytecode = tsl_buffer_begin(&self->function_bytecode_list);
char *instruction = tsl_buffer_begin(&file_scope_bytecode->buffer);
char *instruction_end = tsl_buffer_end(&file_scope_bytecode->buffer);
self->variables = GC_MALLOC_UNCOLLECTABLE(sizeof(TslHashMap));
if(!self->variables) {
fprintf(stderr, "Error: Failed to allocate root object\n");
return TSL_PROGRAM_RESULT_ERR;
}
tsl_hash_map_init(self->variables);
tsl_buffer_init(&self->stack_values);
printf("###########################\n");
/* TODO: Verify if these don't cause unaligned memory access on non-x86 platforms */
while(instruction != instruction_end) {
TslOpcode opcode = *(TslOpcode*)instruction;
TslInstructionType1 *instruction_type1 = (TslInstructionType1*)instruction;
TslInstructionType2 *instruction_type2 = (TslInstructionType2*)instruction;
TslInstructionType3 *instruction_type3 = (TslInstructionType3*)instruction;
TslInstructionType4 *instruction_type4 = (TslInstructionType4*)instruction;
switch(opcode) {
case TSL_OPCODE_LOADN: {
TslStackValue stack_value;
stack_value.data.number = instruction_type2->value;
stack_value.type = TSL_STACK_VALUE_TYPE_NUMBER;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadn %f\n", instruction_type2->value);
instruction += sizeof(TslInstructionType2);
break;
}
case TSL_OPCODE_LOADB: {
TslStackValue stack_value;
stack_value.data.boolean = instruction_type3->value;
stack_value.type = TSL_STACK_VALUE_TYPE_BOOL;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadb %s\n", instruction_type3->value ? "true" : "false");
instruction += sizeof(TslInstructionType3);
break;
}
case TSL_OPCODE_LOADS: {
#if 0
TslString *str = GC_MALLOC(sizeof(TslString));
char *str_data = GC_MALLOC_ATOMIC(instruction_type4->value.size + 1);
if(!str) {
fprintf(stderr, "Error: out of memory\n");
return TSL_PROGRAM_RESULT_ERR;
}
if(!str_data) {
fprintf(stderr, "Error: out of memory\n");
return TSL_PROGRAM_RESULT_ERR;
}
memcpy(str->data, instruction_type4->value.data, instruction_type4->value.size);
str->data[instruction_type4->value.size] = '\0';
str->size = instruction_type4->value.size;
#endif
TslStackValue stack_value;
stack_value.data.str = instruction_type4->value;
stack_value.type = TSL_STACK_VALUE_TYPE_STRING;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loads \"%.*s\"\n", (int)instruction_type4->value.size, instruction_type4->value.data);
instruction += sizeof(TslInstructionType4);
break;
}
case TSL_OPCODE_LOADF: {
TslStackValue stack_value;
stack_value.data.integer = instruction_type1->value;
stack_value.type = TSL_STACK_VALUE_TYPE_FUNCTION;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadf %d\n", instruction_type1->value);
instruction += sizeof(TslInstructionType1);
break;
}
case TSL_OPCODE_LOADV: {
TslStackValue stack_value;
stack_value.data.str = instruction_type4->value;
stack_value.type = TSL_STACK_VALUE_TYPE_VARIABLE;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadv \"%.*s\"\n", (int)instruction_type4->value.size, instruction_type4->value.data);
instruction += sizeof(TslInstructionType4);
break;
}
case TSL_OPCODE_LOADNULL: {
TslStackValue stack_value;
stack_value.type = TSL_STACK_VALUE_TYPE_NULL;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadnull\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_SETV: {
TslValue map_key;
TslValue *stack_value;
TslValue *map_value;
map_key.type = TSL_TYPE_STRING_VIEW;
map_key.data.string_view = instruction_type4->value;
stack_value = tsl_buffer_pop(&self->stack_values, sizeof(TslStackValue));
map_value = tsl_hash_map_get_or_create(self->variables, &map_key);
return_if_error(map_value);
*map_value = *stack_value;
printf("setv \"%.*s\"\n", (int)instruction_type4->value.size, instruction_type4->value.data);
instruction += sizeof(TslInstructionType4);
break;
}
case TSL_OPCODE_LIST: {
printf("list %d\n", instruction_type1->value);
instruction += sizeof(TslInstructionType1);
break;
}
case TSL_OPCODE_MAP: {
printf("map %d\n", instruction_type1->value);
instruction += sizeof(TslInstructionType1);
break;
}
case TSL_OPCODE_MINDEX: {
printf("mindex\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_CALLF: {
printf("callf %d\n", instruction_type1->value);
instruction += sizeof(TslInstructionType1);
break;
}
case TSL_OPCODE_ADD: {
printf("add\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_SUB: {
printf("sub\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_MUL: {
printf("mul\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_DIV: {
printf("div\n");
instruction += sizeof(TslInstructionType5);
break;
}
case TSL_OPCODE_LOADCA: {
TslStackValue stack_value;
stack_value.data.str = instruction_type4->value;
stack_value.type = TSL_STACK_VALUE_TYPE_COMMAND_ARG;
return_if_error(tsl_buffer_append(&self->stack_values, &stack_value, sizeof(stack_value)));
printf("loadca \"%.*s\"\n", (int)instruction_type4->value.size, instruction_type4->value.data);
instruction += sizeof(TslInstructionType4);
break;
}
case TSL_OPCODE_CALLC: {
TslStackValue *args_begin = tsl_buffer_pop(&self->stack_values, sizeof(TslStackValue) * instruction_type1->value);
TslStackValue *args_end = args_begin + instruction_type1->value;
TslStackValue *args = args_begin;
char *command_args[255];
char temp_null_save[255];
size_t arg_index = 0;
assert(instruction_type1->value > 0);
{
/* TODO: Support infinite amount of args */
assert(args_end - args_begin < 255);
printf("Running command: ");
while(args != args_end) {
assert(args->type == TSL_STACK_VALUE_TYPE_COMMAND_ARG);
temp_null_save[arg_index] = args->data.str.data[args->data.str.size];
args->data.str.data[args->data.str.size] = '\0';
command_args[arg_index] = args->data.str.data;
printf("%s ", command_args[arg_index]);
++arg_index;
++args;
}
command_args[arg_index] = NULL;
printf("\n");
}
tsl_command_exec(command_args, program_output_temp, NULL);
{
args = args_begin;
arg_index = 0;
/* TODO: Support infinite amount of args */
while(args != args_end) {
args->data.str.data[args->data.str.size] = temp_null_save[arg_index];
++arg_index;
++args;
}
command_args[arg_index] = NULL;
}
printf("callc %d\n", instruction_type1->value);
instruction += sizeof(TslInstructionType1);
break;
}
}
}
cleanup:
assert(self->stack_values.size == 0); /* All push instructions (mostly load) haven't been handled yet. This is a bug in tsl */
tsl_buffer_deinit(&self->stack_values);
GC_FREE(self->variables); /* Free the root object, resulting in all objects in the program being free'd */
self->variables = NULL;
return result;
}
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