75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
#include <stdlib.h>
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#include "picrin.h"
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#include "picrin/gc.h"
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#include "picrin/proc.h"
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static struct pic_env *
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pic_new_empty_env()
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{
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struct pic_env *env;
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env = (struct pic_env *)malloc(sizeof(struct pic_env));
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env->assoc = pic_nil_value();
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env->parent = NULL;
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return env;
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}
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void pic_init_core(pic_state *);
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pic_state *
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pic_open()
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{
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pic_state *pic;
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pic = (pic_state *)malloc(sizeof(pic_state));
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/* prepare VM stack */
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pic->stbase = pic->sp = (pic_value *)malloc(sizeof(pic_value) * PIC_STACK_SIZE);
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pic->stend = pic->stbase + PIC_STACK_SIZE;
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/* callinfo */
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pic->cibase = pic->ci = (pic_callinfo *)malloc(sizeof(pic_callinfo) * PIC_STACK_SIZE);
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pic->ciend = pic->ciend + PIC_STACK_SIZE;
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/* memory heap */
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pic->heap = (struct heap_page *)malloc(sizeof(struct heap_page));
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init_heap_page(pic->heap);
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/* irep */
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pic->irep = (struct pic_irep **)malloc(sizeof(struct pic_irep *) * PIC_IREP_SIZE);
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pic->ilen = 0;
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pic->icapa = PIC_IREP_SIZE;
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/* globals */
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pic->globals = (pic_value *)malloc(sizeof(pic_value) * PIC_GLOBALS_SIZE);
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pic->glen = 0;
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pic->gcapa = PIC_GLOBALS_SIZE;
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/* GC arena */
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pic->arena_idx = 0;
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pic->sDEFINE = pic_intern_cstr(pic, "define");
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pic->sLAMBDA = pic_intern_cstr(pic, "lambda");
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pic->sIF = pic_intern_cstr(pic, "if");
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pic->sBEGIN = pic_intern_cstr(pic, "begin");
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pic->sCONS = pic_intern_cstr(pic, "cons");
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pic->sADD = pic_intern_cstr(pic, "+");
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pic->sSUB = pic_intern_cstr(pic, "-");
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pic->sMUL = pic_intern_cstr(pic, "*");
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pic->sDIV = pic_intern_cstr(pic, "/");
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/* global environment */
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pic->global_env = pic_new_empty_env();
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pic_init_core(pic);
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return pic;
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}
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void
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pic_close(pic_state *pic)
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{
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free(pic);
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}
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