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distinguish lref and cref at analysis stage

This commit is contained in:
Yuichi Nishiwaki 2014-03-23 11:28:11 +09:00
parent 0bcb970842
commit 312c977c17
1 changed files with 36 additions and 21 deletions
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57
src/codegen.c
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@ -30,7 +30,7 @@ typedef struct analyze_state {
pic_sym rEQ, rLT, rLE, rGT, rGE, rNOT;
pic_sym rVALUES, rCALL_WITH_VALUES;
pic_sym sCALL, sTAILCALL, sCALL_WITH_VALUES, sTAILCALL_WITH_VALUES;
pic_sym sREF, sGREF, sRETURN;
pic_sym sGREF, sLREF, sCREF, sRETURN;
} analyze_state;
static bool push_scope(analyze_state *, pic_value);
@ -83,8 +83,9 @@ new_analyze_state(pic_state *pic)
register_symbol(pic, state, sTAILCALL, "tail-call");
register_symbol(pic, state, sCALL_WITH_VALUES, "call-with-values");
register_symbol(pic, state, sTAILCALL_WITH_VALUES, "tailcall-with-values");
register_symbol(pic, state, sREF, "ref");
register_symbol(pic, state, sGREF, "gref");
register_symbol(pic, state, sLREF, "lref");
register_symbol(pic, state, sCREF, "cref");
register_symbol(pic, state, sRETURN, "return");
/* push initial scope */
@ -249,15 +250,6 @@ define_var(analyze_state *state, pic_sym sym)
xv_push(&scope->locals, &sym);
}
static pic_value
new_ref(analyze_state *state, int depth, pic_sym sym)
{
return pic_list3(state->pic,
pic_symbol_value(state->sREF),
pic_int_value(depth),
pic_symbol_value(sym));
}
static pic_value analyze_node(analyze_state *, pic_value, bool);
static pic_value
@ -305,6 +297,22 @@ analyze_global_var(analyze_state *state, pic_sym sym)
return pic_list2(pic, pic_symbol_value(state->sGREF), pic_int_value(i));
}
static pic_value
analyze_local_var(analyze_state *state, pic_sym sym)
{
pic_state *pic = state->pic;
return pic_list2(pic, pic_symbol_value(state->sLREF), pic_sym_value(sym));
}
static pic_value
analyze_free_var(analyze_state *state, pic_sym sym, int depth)
{
pic_state *pic = state->pic;
return pic_list3(pic, pic_symbol_value(state->sCREF), pic_int_value(depth), pic_sym_value(sym));
}
static pic_value
analyze_var(analyze_state *state, pic_value obj)
{
@ -319,8 +327,11 @@ analyze_var(analyze_state *state, pic_value obj)
if (depth == state->scope->depth) {
return analyze_global_var(state, sym);
} else if (depth == 0) {
return analyze_local_var(state, sym);
} else {
return analyze_free_var(state, sym, depth);
}
return new_ref(state, depth, sym);
}
static pic_value
@ -810,7 +821,6 @@ typedef struct resolver_scope {
typedef struct resolver_state {
pic_state *pic;
resolver_scope *scope;
pic_sym sREF;
pic_sym sGREF, sCREF, sLREF;
} resolver_state;
@ -826,7 +836,6 @@ new_resolver_state(pic_state *pic)
state->pic = pic;
state->scope = NULL;
register_symbol(pic, state, sREF, "ref");
register_symbol(pic, state, sGREF, "gref");
register_symbol(pic, state, sLREF, "lref");
register_symbol(pic, state, sCREF, "cref");
@ -953,18 +962,24 @@ resolve_reference_node(resolver_state *state, pic_value obj)
return obj;
tag = pic_sym(pic_car(pic, obj));
if (tag == state->sREF) {
if (tag == state->sLREF) {
pic_sym sym;
sym = pic_sym(pic_list_ref(pic, obj, 1));
if (! is_closed(state, sym)) {
return resolve_lref(state, sym);
}
else {
return resolve_cref(state, 0, sym);
}
}
else if (tag == state->sCREF) {
int depth;
pic_sym sym;
depth = pic_int(pic_list_ref(pic, obj, 1));
sym = pic_sym(pic_list_ref(pic, obj, 2));
if (depth == 0 && ! is_closed(state, sym)) {
return resolve_lref(state, sym);
}
else {
return resolve_cref(state, depth, sym);
}
return resolve_cref(state, depth, sym);
}
else if (tag == pic->sLAMBDA) {
pic_value args, locals, closes, body;