xxq250/Nasal-Interpreter
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prepare for byte code interpreter

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Valk Richard Li
2020-10-12 03:04:02 -07:00
committed by GitHub
parent 94a3031f7b
commit 3b0ea26734
4 changed files with 192 additions and 3 deletions
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version3.0/main.cpp
+30
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@@ -4,6 +4,7 @@ nasal_resource resource;
nasal_lexer lexer;
nasal_parse parse;
nasal_import preprocessor;
nasal_codegen code_generator;
std::string command;
std::string inputfile="null";
nasal_runtime runtime;
@@ -17,6 +18,7 @@ void help()
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<<">> [exec ] generate byte code."<<std::endl;
std::cout<<">> [logo ] print logo of nasal ."<<std::endl;
std::cout<<">> [exit ] quit nasal interpreter."<<std::endl;
return;
@@ -104,6 +106,32 @@ void runtime_start()
return;
}
void codegen_start()
{
lexer.scanner(resource.get_file());
if(lexer.get_error())
{
die("lexer",inputfile);
return;
}
parse.set_toklist(lexer.get_token_list());
parse.main_process();
if(parse.get_error())
{
die("parse",inputfile);
return;
}
preprocessor.preprocessing(parse.get_root());
if(preprocessor.get_error())
{
die("import",inputfile);
return;
}
runtime.set_root(preprocessor.get_root());
code_generator.main_progress(inputfile+".naexec",preprocessor.get_root());
return;
}
int main()
{
#ifdef _WIN32
@@ -154,6 +182,8 @@ int main()
ast_print();
else if(command=="run")
runtime_start();
else if(command=="exec")
codegen_start();
else if(command=="logo")
logo();
else if(command=="exit")