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ValKmjolnir
2022-11-26 22:49:22 +08:00
parent 54969681fc
commit 4c5ffb0240
20 changed files with 1965 additions and 2088 deletions
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nasal_opt.h
+22 -22
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@@ -2,20 +2,17 @@
#include <cmath>
void const_str(ast& root)
{
void const_str(ast& root) {
auto& vec=root.child();
root.set_str(vec[0].str()+vec[1].str());
root.child().clear();
root.set_type(ast_str);
}
void const_num(ast& root)
{
void const_num(ast& root) {
auto& vec=root.child();
f64 res=0;
switch(root.type())
{
switch(root.type()) {
case ast_add: res=vec[0].num()+vec[1].num(); break;
case ast_sub: res=vec[0].num()-vec[1].num(); break;
case ast_mult:res=vec[0].num()*vec[1].num(); break;
@@ -26,43 +23,46 @@ void const_num(ast& root)
case ast_geq: res=vec[0].num()>=vec[1].num();break;
}
// inf and nan will cause number hashmap error in codegen
if(std::isinf(res) || std::isnan(res))
if (std::isinf(res) || std::isnan(res)) {
return;
}
root.set_num(res);
root.child().clear();
root.set_type(ast_num);
}
void calc_const(ast& root)
{
void calc_const(ast& root) {
auto& vec=root.child();
for(auto& i:vec)
for(auto& i:vec) {
calc_const(i);
if(vec.size()==1 && root.type()==ast_neg && vec[0].type()==ast_num)
{
}
if (vec.size()==1 && root.type()==ast_neg && vec[0].type()==ast_num) {
f64 res=-vec[0].num();
root.set_num(res);
root.child().clear();
root.set_type(ast_num);
return;
}
if(vec.size()!=2)
if (vec.size()!=2) {
return;
if(root.type()!=ast_add && root.type()!=ast_sub &&
}
if (root.type()!=ast_add && root.type()!=ast_sub &&
root.type()!=ast_mult && root.type()!=ast_div &&
root.type()!=ast_link && root.type()!=ast_less &&
root.type()!=ast_leq && root.type()!=ast_grt &&
root.type()!=ast_geq)
root.type()!=ast_geq) {
return;
if(root.type()==ast_link &&
vec[0].type()==ast_str && vec[1].type()==ast_str)
}
if (root.type()==ast_link &&
vec[0].type()==ast_str && vec[1].type()==ast_str) {
const_str(root);
else if(root.type()!=ast_link &&
vec[0].type()==ast_num && vec[1].type()==ast_num)
} else if (root.type()!=ast_link &&
vec[0].type()==ast_num && vec[1].type()==ast_num) {
const_num(root);
}
}
void optimize(ast& root)
{
for(auto& i:root.child())
void optimize(ast& root) {
for(auto& i:root.child()) {
calc_const(i);
}
}