floraachy/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2020-10-12 09:00:36 -07:00
committed by GitHub
parent 50694f467b
commit fd128c3758
3 changed files with 158 additions and 87 deletions
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60
version3.0/main.cpp
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@@ -13,12 +13,13 @@ void help()
{
std::cout<<">> [\"file\"] input a file."<<std::endl;
std::cout<<">> [clear ] clear the screen."<<std::endl;
std::cout<<">> [del ] clear the source code."<<std::endl;
std::cout<<">> [del ] clear the input filename."<<std::endl;
std::cout<<">> [rs ] print source code."<<std::endl;
std::cout<<">> [lex ] use lexer to turn code into tokens."<<std::endl;
std::cout<<">> [ast ] do parsing and check the abstract syntax tree."<<std::endl;
std::cout<<">> [run ] run code."<<std::endl;
std::cout<<">> [run ] run abstract syntax tree."<<std::endl;
std::cout<<">> [exec ] generate byte code."<<std::endl;
std::cout<<">> [erun ] run byte code."<<std::endl;
std::cout<<">> [logo ] print logo of nasal ."<<std::endl;
std::cout<<">> [exit ] quit nasal interpreter."<<std::endl;
return;
@@ -52,6 +53,11 @@ void die(std::string stage,std::string filename)
void lex_func()
{
if(!resource.input_file(inputfile))
{
die("resource",inputfile);
return;
}
lexer.scanner(resource.get_file());
if(lexer.get_error())
{
@@ -64,6 +70,11 @@ void lex_func()
void ast_print()
{
if(!resource.input_file(inputfile))
{
die("resource",inputfile);
return;
}
lexer.scanner(resource.get_file());
if(lexer.get_error())
{
@@ -82,6 +93,11 @@ void ast_print()
}
void runtime_start()
{
if(!resource.input_file(inputfile))
{
die("resource",inputfile);
return;
}
lexer.scanner(resource.get_file());
if(lexer.get_error())
{
@@ -108,6 +124,11 @@ void runtime_start()
void codegen_start()
{
if(!resource.input_file(inputfile))
{
die("resource",inputfile);
return;
}
lexer.scanner(resource.get_file());
if(lexer.get_error())
{
@@ -128,7 +149,25 @@ void codegen_start()
return;
}
runtime.set_root(preprocessor.get_root());
code_generator.main_progress(inputfile+".naexec",preprocessor.get_root());
code_generator.output_exec(inputfile+".naexec",preprocessor.get_root());
if(code_generator.get_error())
{
die("code",inputfile);
return;
}
return;
}
void execution_start()
{
code_generator.load_exec(inputfile,preprocessor.get_root());
if(code_generator.get_error())
{
die("code",inputfile);
return;
}
runtime.set_root(preprocessor.get_root());
runtime.run();
return;
}
@@ -175,7 +214,10 @@ int main()
else if(command=="del")
del_func();
else if(command=="rs")
resource.print_file();
{
if(resource.input_file(inputfile))
resource.print_file();
}
else if(command=="lex")
lex_func();
else if(command=="ast")
@@ -184,6 +226,8 @@ int main()
runtime_start();
else if(command=="exec")
codegen_start();
else if(command=="erun")
execution_start();
else if(command=="logo")
logo();
else if(command=="exit")
@@ -191,7 +235,13 @@ int main()
else
{
inputfile=command;
resource.input_file(inputfile);
std::ifstream fin(command);
if(fin.fail())
{
std::cout<<">> [file] cannot open file \""<<command<<"\"."<<std::endl;
inputfile="null";
}
fin.close();
}
}
return 0;