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Nasal-Interpreter
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Valk Richard Li 2019-08-31 11:36:01 -05:00 committed by GitHub
parent c0e5130dd3
commit 4d40cab3a4
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1 changed files with 30 additions and 2 deletions
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32
version0.10/nasal_parser.h
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@ -39,7 +39,7 @@ enum token_type
__call_function,
__definition,
__assignment,
__calculation,__add_calc,__mul_calc,__curve_calc,
__calculation,
__loop,
__choose,
__program
@ -55,6 +55,7 @@ struct cmp_seq
cmp_seq par[]=
{
{{__program,__statement}, __program},
{{__calculation,__add_operator,__calculation}, __calculation},
{{__calculation,__add_operator,__id}, __calculation},
{{__id,__add_operator,__calculation}, __calculation},
@ -83,7 +84,14 @@ cmp_seq par[]=
{{__right_curve,__id,__left_curve}, __calculation},
{{__right_curve,__calculation,__left_curve}, __calculation},
{{__semi,__calculation,__equal,__id,__var}, __definition},
{{__definition}, __statement}
{{__semi,__number,__equal,__id,__var}, __definition},
{{__semi,__string,__equal,__id,__var}, __definition},
{{__semi,__id,__equal,__id,__var}, __definition},
{{__semi,__char,__equal,__id,__var}, __definition},
{{__semi,__right_brace,__left_brace,__equal,__id,__var}, __definition},
{{__semi,__right_bracket,__left_bracket,__equal,__id,__var}, __definition},
{{__definition}, __statement},
{{__statement,__statement}, __statement}
};
int num_of_par=sizeof(par)/sizeof(cmp_seq);
@ -367,6 +375,20 @@ class PDA
}
return false;
}
void print_error()
{
while(!comp_stack.empty())
{
if((comp_stack.top()!=__statement) && (comp_stack.top()!=__program) && (comp_stack.top()!=__stack_end))
{
print_token(comp_stack.top());
std::cout<<" ";
}
comp_stack.pop();
}
std::cout<<std::endl;
return;
}
void main_comp_progress(bool show)
{
if(show)
@ -391,10 +413,16 @@ class PDA
if(comp_stack.top()==__stack_end)
std::cout<<">>[Parse] 0 error(s)."<<std::endl;
else
{
std::cout<<">>[Parse] Error:"<<std::endl;
print_error();
}
}
else
{
std::cout<<">>[Parse] Error:"<<std::endl;
print_error();
}
std::cout<<">>[Parse] Complete checking."<<std::endl;
//print_error();
return;