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refactor codegen_call

This commit is contained in:
Yuichi Nishiwaki 2015-07-02 05:26:05 +09:00
parent 28b180ac3f
commit f622ba3db4
1 changed files with 47 additions and 90 deletions
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137
extlib/benz/codegen.c
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@ -937,6 +937,51 @@ codegen_quote(pic_state *pic, codegen_context *cxt, pic_value obj, bool tailpos)
}
}
static bool
codegen_call_vm(pic_state *pic, codegen_context *cxt, pic_value proc, size_t len, bool tailpos)
{
pic_sym *sym;
if (pic_sym_ptr(pic_list_ref(pic, proc, 0)) == pic->sGREF) {
#define VM(uid, op) \
if (sym == uid) { \
emit_n(pic, cxt, op); \
emit_ret(pic, cxt, tailpos); \
return true; \
}
/*
TODO:
- call-with-values, values, >, >=
- more than 2 arguments for add, sub, mul, ...
*/
sym = pic_sym_ptr(pic_list_ref(pic, proc, 1));
if (len == 3) { /* binary operator */
VM(pic->uCONS, OP_CONS)
VM(pic->uADD, OP_ADD)
VM(pic->uSUB, OP_SUB)
VM(pic->uMUL, OP_MUL)
VM(pic->uDIV, OP_DIV)
VM(pic->uEQ, OP_EQ)
VM(pic->uLT, OP_LT)
VM(pic->uLE, OP_LE)
}
if (len == 2) { /* unary operator */
VM(pic->uCAR, OP_CAR)
VM(pic->uCDR, OP_CDR)
VM(pic->uNILP, OP_NILP)
VM(pic->uSYMBOLP, OP_SYMBOLP)
VM(pic->uPAIRP, OP_PAIRP)
VM(pic->uSUB, OP_MINUS)
VM(pic->uNOT, OP_NOT)
}
}
return false;
}
static void
codegen_call(pic_state *pic, codegen_context *cxt, pic_value obj, bool tailpos)
{
@ -947,96 +992,8 @@ codegen_call(pic_state *pic, codegen_context *cxt, pic_value obj, bool tailpos)
codegen(pic, cxt, elt, false);
}
if (pic_sym_ptr(pic_list_ref(pic, pic_list_ref(pic, obj, 1), 0)) == pic->sGREF) {
pic_sym *sym;
/*
TODO:
- call-with-values, values, >, >=
- more than 2 arguments for add, sub, mul, ...
*/
sym = pic_sym_ptr(pic_list_ref(pic, pic_list_ref(pic, obj, 1), 1));
if (len == 4) { /* binary operator */
if (sym == pic->uCONS) {
emit_n(pic, cxt, OP_CONS);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uADD) {
emit_n(pic, cxt, OP_ADD);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uSUB) {
emit_n(pic, cxt, OP_SUB);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uMUL) {
emit_n(pic, cxt, OP_MUL);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uDIV) {
emit_n(pic, cxt, OP_DIV);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uEQ) {
emit_n(pic, cxt, OP_EQ);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uLT) {
emit_n(pic, cxt, OP_LT);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uLE) {
emit_n(pic, cxt, OP_LE);
emit_ret(pic, cxt, tailpos);
return;
}
}
if (len == 3) { /* unary operator */
if (sym == pic->uCAR) {
emit_n(pic, cxt, OP_CAR);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uCDR) {
emit_n(pic, cxt, OP_CDR);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uNILP) {
emit_n(pic, cxt, OP_NILP);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uSYMBOLP) {
emit_n(pic, cxt, OP_SYMBOLP);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uPAIRP) {
emit_n(pic, cxt, OP_PAIRP);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uSUB) {
emit_n(pic, cxt, OP_MINUS);
emit_ret(pic, cxt, tailpos);
return;
}
else if (sym == pic->uNOT) {
emit_n(pic, cxt, OP_NOT);
emit_ret(pic, cxt, tailpos);
return;
}
}
if (codegen_call_vm(pic, cxt, pic_list_ref(pic, obj, 1), len - 1, tailpos)) {
return;
}
emit_i(pic, cxt, (tailpos ? OP_TAILCALL : OP_CALL), len - 1);