xxq250/Nasal-Interpreter
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add trace back info

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This commit is contained in:
Li Haokun
2021-07-16 17:18:13 +08:00
committed by GitHub
parent 9da029b8fe
commit 9fe7a86a3b
7 changed files with 147 additions and 121 deletions
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16
main.cpp
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@@ -5,7 +5,6 @@ void help_interact()
std::cout
<<">> [ ] input a file name to execute. \n"
<<">> [help ] show help. \n"
<<">> [lex ] view tokens. \n"
<<">> [ast ] view abstract syntax tree. \n"
<<">> [code ] view byte code. \n"
<<">> [exec ] execute program on bytecode vm.\n"
@@ -65,13 +64,7 @@ void execute(std::string& file,std::string& command)
die("lexer",file);
return;
}
if(command=="lex")
{
lexer.print_token();
return;
}
parse.set_toklist(lexer.get_token_list());
lexer.get_token_list().clear();
parse.main_process();
if(parse.get_error())
{
@@ -83,8 +76,8 @@ void execute(std::string& file,std::string& command)
parse.get_root().print_ast(0);
return;
}
import.link(parse.get_root());
parse.get_root().clear();
// first used file is itself
import.link(parse.get_root(),file);
if(import.get_error())
{
die("import",file);
@@ -103,7 +96,8 @@ void execute(std::string& file,std::string& command)
}
vm.init(
codegen.get_str_table(),
codegen.get_num_table()
codegen.get_num_table(),
import.get_file()
);
vm.run(codegen.get_exec_code());
vm.clear();
@@ -128,7 +122,7 @@ void interact()
logo();
else if(command=="exit")
return;
else if(command=="lex" || command=="ast" || command=="code" || command=="exec")
else if(command=="ast" || command=="code" || command=="exec")
execute(file,command);
else
file=command;