xxq250/Nasal-Interpreter
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now local values are stored on stack. upvalue is generated when creating a new function in local scope.

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may include some bugs inside. but all test files has passed the test so i decide to push it.
This commit is contained in:
ValKmjolnir
2022-02-12 23:12:30 +08:00
parent c7909bfdf8
commit 0d5b0fa57d
7 changed files with 169 additions and 144 deletions
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test/bf.nas
+11 -9
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@@ -152,6 +152,15 @@ var (ptr,pc)=(0,0);
var (code,inum,stack)=([],[],[]);
var (add,mov,jt,jf,in,out)=(0,1,2,3,4,5);
var funcs=[
func{paper[ptr]+=inum[pc];},
func{ptr+=inum[pc];},
func{if(paper[ptr])pc=inum[pc];},
func{if(!paper[ptr])pc=inum[pc];},
func{paper[ptr]=input()[0];},
func{print(chr(paper[ptr]));}
];
var bf=func(program){
setsize(paper,131072);
var len=size(program);
@@ -212,15 +221,8 @@ var bf=func(program){
return;
}
len=size(code);
for(pc=0;pc<len;pc+=1){
var c=code[pc];
if(c==add) paper[ptr]+=inum[pc];
elsif(c==mov)ptr+=inum[pc];
elsif(c==jt){if(paper[ptr])pc=inum[pc];}
elsif(c==jf){if(!paper[ptr])pc=inum[pc];}
elsif(c==in) paper[ptr]=input()[0];
else print(chr(paper[ptr]));
}
for(pc=0;pc<len;pc+=1)
funcs[code[pc]]();
return;
}