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hold local variables information in codegen_context

This commit is contained in:
Yuichi Nishiwaki 2014-03-22 18:46:57 +09:00
parent 046fae1adb
commit 5a56f57782
1 changed files with 23 additions and 10 deletions
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33
src/codegen.c
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@ -1019,7 +1019,7 @@ pic_resolve(pic_state *pic, pic_value obj)
typedef struct codegen_context {
bool varg;
/* rest args variable is counted as a local */
int argc, localc;
xvect args, locals;
/* closed variable table */
unsigned *cv_tbl, cv_num;
/* actual bit code sequence */
@ -1091,22 +1091,31 @@ push_codegen_context(codegen_state *state, pic_value args, pic_value locals, boo
{
pic_state *pic = state->pic;
codegen_context *cxt;
int i, c;
size_t i, c;
xhash *vars;
pic_value var;
cxt = (codegen_context *)pic_alloc(pic, sizeof(codegen_context));
cxt->up = state->cxt;
cxt->argc = pic_length(pic, args) + 1;
cxt->localc = pic_length(pic, locals);
cxt->varg = varg;
xv_init(&cxt->args, sizeof(pic_sym));
xv_init(&cxt->locals, sizeof(pic_sym));
pic_for_each (var, args) {
xv_push(&cxt->args, &pic_sym(var));
}
pic_for_each (var, locals) {
xv_push(&cxt->locals, &pic_sym(var));
}
/* number local variables */
vars = xh_new_int();
for (i = 1; i < cxt->argc; ++i) {
xh_put_int(vars, pic_sym(pic_list_ref(pic, args, i - 1)), i);
for (i = 0; i < cxt->args.size; ++i) {
xh_put_int(vars, pic_sym(pic_list_ref(pic, args, i)), i + 1);
}
for (i = 0; i < cxt->localc; ++i) {
xh_put_int(vars, pic_sym(pic_list_ref(pic, locals, i)), cxt->argc + i);
for (i = 0; i < cxt->locals.size; ++i) {
xh_put_int(vars, pic_sym(pic_list_ref(pic, locals, i)), i + 1 + cxt->args.size);
}
/* closed variables */
@ -1145,8 +1154,8 @@ pop_codegen_context(codegen_state *state)
/* create irep */
irep = (struct pic_irep *)pic_obj_alloc(pic, sizeof(struct pic_irep), PIC_TT_IREP);
irep->varg = state->cxt->varg;
irep->argc = state->cxt->argc;
irep->localc = state->cxt->localc;
irep->argc = state->cxt->args.size + 1;
irep->localc = state->cxt->locals.size;
irep->cv_tbl = state->cxt->cv_tbl;
irep->cv_num = state->cxt->cv_num;
irep->code = pic_realloc(pic, state->cxt->code, sizeof(pic_code) * state->cxt->clen);
@ -1156,6 +1165,10 @@ pop_codegen_context(codegen_state *state)
irep->pool = pic_realloc(pic, state->cxt->pool, sizeof(pic_value) * state->cxt->plen);
irep->plen = state->cxt->plen;
/* finalize */
xv_destroy(&cxt->args);
xv_destroy(&cxt->locals);
/* destroy context */
cxt = cxt->up;
pic_free(pic, state->cxt);