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Nasal-Interpreter
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Valk Richard Li 2019-09-03 04:12:15 -05:00 committed by GitHub
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2 changed files with 51 additions and 14 deletions
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7
version0.11/a.txt
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@ -17,13 +17,9 @@ var e=func(e...)
var e=func(e) var e=func(e)
{ {
if(e>m) if(e>m)
{
e-=2; e-=2;
}
else else
{
e+=1; e+=1;
}
return [0,1,2,3]; return [0,1,2,3];
} }
var e=func(e,e,e) var e=func(e,e,e)
@ -56,5 +52,8 @@ var a=0;
a*=2; a*=2;
var e=func() var e=func()
{ {
var e=e.e().e[0];
for(var i=1;i<10;i)
a=i;
return a; return a;
} }

58
version0.11/nasal_parser.h
View File

@ -68,31 +68,35 @@ cmp_seq par[]=
{{__elsif_choose,__if_choose}, __choose}, {{__elsif_choose,__if_choose}, __choose},
{{__if_choose}, __choose},// ? {{__if_choose}, __choose},// ?
//{{__statement,__right_curve,__calculation,__while_head}, __loop}, {{__statement,__right_curve,__id,__semi,__calculation,__statement,__left_curve,__for}, __loop},
{{__right_brace,__statement,__left_brace,__right_curve,__id,__semi,__calculation,__statement,__left_curve,__for}, __loop},
{{__right_brace,__statements,__left_brace,__right_curve,__id,__semi,__calculation,__statement,__left_curve,__for}, __loop},
{{__statement,__right_curve,__calculation,__while_head}, __loop},
{{__right_brace,__statement,__left_brace,__right_curve,__calculation,__while_head}, __loop}, {{__right_brace,__statement,__left_brace,__right_curve,__calculation,__while_head}, __loop},
{{__right_brace,__statements,__left_brace,__right_curve,__calculation,__while_head}, __loop}, {{__right_brace,__statements,__left_brace,__right_curve,__calculation,__while_head}, __loop},
//{{__statement,__right_curve,__id,__semi,__id,__left_curve,__forindex}, __loop}, {{__statement,__right_curve,__id,__semi,__id,__left_curve,__forindex}, __loop},
{{__right_brace,__statement,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__forindex}, __loop}, {{__right_brace,__statement,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__forindex}, __loop},
{{__right_brace,__statements,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__forindex},__loop}, {{__right_brace,__statements,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__forindex},__loop},
//{{__statement,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop}, {{__statement,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop},
{{__right_brace,__statement,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop}, {{__right_brace,__statement,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop},
{{__right_brace,__statements,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop}, {{__right_brace,__statements,__left_brace,__right_curve,__id,__semi,__id,__left_curve,__foreach}, __loop},
//{{__statement,__right_curve,__calculation,__if_head}, __if_choose}, {{__statement,__right_curve,__calculation,__if_head}, __if_choose},
{{__right_brace,__statement,__left_brace,__right_curve,__calculation,__if_head}, __if_choose}, {{__right_brace,__statement,__left_brace,__right_curve,__calculation,__if_head}, __if_choose},
{{__right_brace,__statements,__left_brace,__right_curve,__calculation,__if_head}, __if_choose}, {{__right_brace,__statements,__left_brace,__right_curve,__calculation,__if_head}, __if_choose},
{{__right_brace,__left_brace,__right_curve,__calculation,__if_head}, __if_choose}, {{__right_brace,__left_brace,__right_curve,__calculation,__if_head}, __if_choose},
//{{__statement,__right_curve,__calculation,__elsif_head}, __elsif_choose}, {{__statement,__right_curve,__calculation,__elsif_head}, __elsif_choose},
{{__right_brace,__statement,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose}, {{__right_brace,__statement,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose},
{{__right_brace,__statements,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose}, {{__right_brace,__statements,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose},
{{__right_brace,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose}, {{__right_brace,__left_brace,__right_curve,__calculation,__elsif_head}, __elsif_choose},
//{{__statement,__right_curve,__calculation,__if_head,__else}, __elsif_choose}, {{__statement,__right_curve,__calculation,__if_head,__else}, __elsif_choose},
{{__right_brace,__statement,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose}, {{__right_brace,__statement,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose},
{{__right_brace,__statements,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose}, {{__right_brace,__statements,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose},
{{__right_brace,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose}, {{__right_brace,__left_brace,__right_curve,__calculation,__if_head,__else}, __elsif_choose},
//{{__statement,__else}, __else_choose}, {{__statement,__else}, __else_choose},
{{__right_brace,__statement,__left_brace,__else}, __else_choose}, {{__right_brace,__statement,__left_brace,__else}, __else_choose},
{{__right_brace,__statements,__left_brace,__else}, __else_choose}, {{__right_brace,__statements,__left_brace,__else}, __else_choose},
{{__right_brace,__left_brace,__else}, __else_choose}, {{__right_brace,__left_brace,__else}, __else_choose},
@ -100,12 +104,27 @@ cmp_seq par[]=
{{__semi,__semi}, __semi}, {{__semi,__semi}, __semi},
{{__id,__dot,__id}, __call_hash}, {{__id,__dot,__id}, __call_hash},
{{__id,__dot,__call_hash}, __call_hash},
{{__id,__dot,__call_list}, __call_hash},
{{__id,__dot,__call_function}, __call_hash},
{{__call_hash,__dot,__id}, __call_hash}, {{__call_hash,__dot,__id}, __call_hash},
{{__call_hash,__dot,__call_list}, __call_hash},
{{__call_hash,__dot,__call_function}, __call_hash},
{{__call_function,__dot,__id}, __call_hash},
{{__call_function,__dot,__call_list}, __call_hash},
{{__call_function,__dot,__call_function}, __call_hash},
{{__call_list,__dot,__id}, __call_hash},
{{__call_list,__dot,__call_list}, __call_hash},
{{__call_list,__dot,__call_function}, __call_hash},
{{__right_brace,__call_function,__semi}, __right_brace}, {{__right_brace,__call_function,__semi}, __right_brace},
{{__semi,__call_function,__semi}, __semi}, {{__semi,__call_function,__semi}, __semi},
{{__right_curve,__data_list,__call_func_head}, __call_function}, {{__right_curve,__data_list,__call_func_head}, __call_function},
{{__right_curve,__scalar_list,__call_func_head}, __call_function},
{{__right_curve,__id,__call_func_head}, __call_function}, {{__right_curve,__id,__call_func_head}, __call_function},
{{__right_curve,__call_func_head}, __call_function}, {{__right_curve,__call_func_head}, __call_function},
@ -125,6 +144,10 @@ cmp_seq par[]=
{{__right_brace,__statements,__left_brace,__right_curve,__func_head}, __function}, {{__right_brace,__statements,__left_brace,__right_curve,__func_head}, __function},
{{__right_bracket,__number,__call_list_head}, __call_list}, {{__right_bracket,__number,__call_list_head}, __call_list},
{{__right_bracket,__call_function,__call_list_head}, __call_list},
{{__right_bracket,__call_list,__call_list_head}, __call_list},
{{__right_bracket,__call_hash,__call_list_head}, __call_list},
{{__list,__call_function}, __call_list},
{{__id,__comma,__id}, __data_list}, {{__id,__comma,__id}, __data_list},
{{__data_list,__comma,__id}, __data_list}, {{__data_list,__comma,__id}, __data_list},
@ -132,15 +155,22 @@ cmp_seq par[]=
{{__number,__comma,__number}, __scalar_list}, {{__number,__comma,__number}, __scalar_list},
{{__number,__comma,__string}, __scalar_list}, {{__number,__comma,__string}, __scalar_list},
{{__number,__comma,__char}, __scalar_list}, {{__number,__comma,__char}, __scalar_list},
{{__number,__comma,__id}, __scalar_list},
{{__string,__comma,__number}, __scalar_list}, {{__string,__comma,__number}, __scalar_list},
{{__string,__comma,__string}, __scalar_list}, {{__string,__comma,__string}, __scalar_list},
{{__string,__comma,__char}, __scalar_list}, {{__string,__comma,__char}, __scalar_list},
{{__string,__comma,__id}, __scalar_list},
{{__char,__comma,__number}, __scalar_list}, {{__char,__comma,__number}, __scalar_list},
{{__char,__comma,__string}, __scalar_list}, {{__char,__comma,__string}, __scalar_list},
{{__char,__comma,__char}, __scalar_list}, {{__char,__comma,__char}, __scalar_list},
{{__char,__comma,__id}, __scalar_list},
{{__scalar_list,__comma,__number}, __scalar_list}, {{__scalar_list,__comma,__number}, __scalar_list},
{{__scalar_list,__comma,__string}, __scalar_list}, {{__scalar_list,__comma,__string}, __scalar_list},
{{__scalar_list,__comma,__char}, __scalar_list}, {{__scalar_list,__comma,__char}, __scalar_list},
{{__scalar_list,__comma,__id}, __scalar_list},
{{__data_list,__comma,__number}, __scalar_list},
{{__data_list,__comma,__string}, __scalar_list},
{{__data_list,__comma,__char}, __scalar_list},
{{__right_bracket,__scalar_list,__left_bracket}, __list}, {{__right_bracket,__scalar_list,__left_bracket}, __list},
{{__right_bracket,__number,__left_bracket}, __list}, {{__right_bracket,__number,__left_bracket}, __list},
@ -624,7 +654,7 @@ void print_token(int type)
break; break;
case __data_list: case __data_list:
context="datas"; context="identifiers";
break; break;
case __scalar_list: case __scalar_list:
context="scalars"; context="scalars";
@ -735,13 +765,16 @@ class PDA
{ {
print_token(comp_stack.top()); print_token(comp_stack.top());
std::cout<<" "; std::cout<<" ";
int t=comp_stack.top();
if((t==__right_brace) || (t==__semi))
std::cout<<std::endl;
} }
comp_stack.pop(); comp_stack.pop();
} }
std::cout<<std::endl; std::cout<<std::endl;
return; return;
} }
void main_comp_progress(bool show) void main_comp_progress(bool show) // show is used to print parser stack
{ {
if(show) if(show)
print_main_and_comp(); print_main_and_comp();
@ -749,7 +782,7 @@ class PDA
{ {
comp_stack.push(main_stack.top()); comp_stack.push(main_stack.top());
main_stack.pop(); main_stack.pop();
if((comp_stack.top()==__id) && (!main_stack.empty()) && (main_stack.top()==__var)) // special LR(1) if((comp_stack.top()==__id) && (!main_stack.empty()) && (main_stack.top()==__var)) // special LR(1) for definition & assignment
{ {
comp_stack.push(main_stack.top()); comp_stack.push(main_stack.top());
main_stack.pop(); main_stack.pop();
@ -760,6 +793,11 @@ class PDA
{ {
if(!reducable()) if(!reducable())
break; break;
if((comp_stack.top()==__statement) && (!main_stack.empty()) && ((main_stack.top()==__right_curve) || (main_stack.top()==__else)))
{
comp_stack.push(main_stack.top());
main_stack.pop();
}
if(show) if(show)
print_main_and_comp(); print_main_and_comp();
} }