update
This commit is contained in:
ValKmjolnir
parent
577546763f
commit
e41f728589
282
main.cpp
282
main.cpp
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@ -1,144 +1,140 @@
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#include "nasal.h"
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#include "nasal.h"
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#define VM_LEXINFO 1
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#define VM_LEXINFO 1
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#define VM_ASTINFO 2
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#define VM_ASTINFO 2
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#define VM_CODEINFO 4
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#define VM_CODEINFO 4
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#define VM_EXECTIME 8
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#define VM_EXECTIME 8
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#define VM_OPCALLNUM 16
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#define VM_OPCALLNUM 16
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#define VM_EXEC 32
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#define VM_EXEC 32
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void help_cmd()
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void help_cmd()
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{
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{
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std::cout
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std::cout
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#ifdef _WIN32
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#ifdef _WIN32
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<<"use command \'chcp 65001\' if want to use unicode.\n"
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<<"use command \'chcp 65001\' if want to use unicode.\n"
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#endif
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#endif
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<<"nasal <option>\n"
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<<"nasal <option>\n"
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<<"option:\n"
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<<"option:\n"
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<<" -h, --help | get help.\n"
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<<" -h, --help | get help.\n"
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<<" -v, --version | get version of nasal interpreter.\n\n"
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<<" -v, --version | get version of nasal interpreter.\n\n"
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<<"nasal <file>\n"
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<<"nasal <file>\n"
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<<"file:\n"
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<<"file:\n"
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<<" input file name to execute script file.\n\n"
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<<" input file name to execute script file.\n\n"
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<<"nasal [options] <file>\n"
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<<"nasal [options] <file>\n"
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<<"option:\n"
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<<"option:\n"
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<<" -l, --lex | view token info.\n"
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<<" -l, --lex | view token info.\n"
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<<" -a, --ast | view abstract syntax tree.\n"
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<<" -a, --ast | view abstract syntax tree.\n"
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<<" -c, --code | view bytecode.\n"
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<<" -c, --code | view bytecode.\n"
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<<" -t, --time | execute and get the running time.\n"
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<<" -t, --time | execute and get the running time.\n"
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<<" -o, --opcnt | count operands while running.\n"
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<<" -o, --opcnt | count operands while running.\n"
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<<"file:\n"
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<<"file:\n"
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<<" input file name to execute script file.\n";
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<<" input file name to execute script file.\n";
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return;
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return;
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}
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}
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void logo()
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void logo()
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{
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{
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std::cout
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std::cout
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<<" __ _ \n"
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<<" __ _ \n"
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<<" /\\ \\ \\__ _ ___ __ _| | \n"
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<<" /\\ \\ \\__ _ ___ __ _| | \n"
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<<" / \\/ / _` / __|/ _` | | \n"
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<<" / \\/ / _` / __|/ _` | | \n"
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<<" / /\\ / (_| \\__ \\ (_| | | \n"
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<<" / /\\ / (_| \\__ \\ (_| | | \n"
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<<" \\_\\ \\/ \\__,_|___/\\__,_|_|\n"
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<<" \\_\\ \\/ \\__,_|___/\\__,_|_|\n"
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<<"nasal interpreter ver 8.0\n"
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<<"nasal interpreter ver 8.0\n"
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<<"thanks to : https://github.com/andyross/nasal\n"
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<<"thanks to : https://github.com/andyross/nasal\n"
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<<"code repo : https://github.com/ValKmjolnir/Nasal-Interpreter\n"
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<<"code repo : https://github.com/ValKmjolnir/Nasal-Interpreter\n"
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<<"code repo : https://gitee.com/valkmjolnir/Nasal-Interpreter\n"
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<<"code repo : https://gitee.com/valkmjolnir/Nasal-Interpreter\n"
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<<"lang info : http://wiki.flightgear.org/Nasal_scripting_language\n"
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<<"lang info : http://wiki.flightgear.org/Nasal_scripting_language\n"
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<<"input \"nasal -h\" to get help .\n";
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<<"input \"nasal -h\" to get help .\n";
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return;
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return;
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}
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}
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void die(const char* stage,const std::string& filename)
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void die(const char* stage,const std::string& filename)
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{
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{
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std::cout<<"["<<stage<<"] in <"<<filename<<">: error(s) occurred,stop.\n";
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std::cout<<"["<<stage<<"] in <"<<filename<<">: error(s) occurred,stop.\n";
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std::exit(1);
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std::exit(1);
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}
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}
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void cmderr()
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void cmderr()
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{
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{
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std::cout
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std::cout
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<<"invalid argument(s).\n"
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<<"invalid argument(s).\n"
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<<"use nasal -h to get help.\n";
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<<"use nasal -h to get help.\n";
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std::exit(1);
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std::exit(1);
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}
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}
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void execute(const std::string& file,const uint16_t cmd)
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void execute(const std::string& file,const uint16_t cmd)
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{
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{
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nasal_lexer lexer;
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nasal_lexer lexer;
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nasal_parse parse;
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nasal_parse parse;
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nasal_import import;
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nasal_import import;
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nasal_codegen codegen;
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nasal_codegen codegen;
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nasal_vm vm;
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nasal_vm vm;
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lexer.open(file);
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lexer.open(file);
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lexer.scan();
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lexer.scan();
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if(lexer.err())
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if(lexer.err())
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die("lexer",file);
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die("lexer",file);
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if(cmd&VM_LEXINFO)
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if(cmd&VM_LEXINFO)
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lexer.print();
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lexer.print();
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parse.compile(lexer.get_tokens());
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parse.compile(lexer.get_tokens());
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if(parse.err())
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if(parse.err())
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die("parse",file);
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die("parse",file);
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if(cmd&VM_ASTINFO)
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if(cmd&VM_ASTINFO)
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parse.get_root().print(0);
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parse.ast().print(0);
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// first used file is itself
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// first used file is itself
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import.link(parse.get_root(),file);
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import.link(parse.ast(),file);
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if(import.err())
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if(import.err())
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die("import",file);
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die("import",file);
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codegen.compile(import.get_root(),import.get_file());
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codegen.compile(import.ast(),import.get_file());
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if(codegen.err())
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if(codegen.err())
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die("code",file);
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die("code",file);
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if(cmd&VM_CODEINFO)
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if(cmd&VM_CODEINFO)
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codegen.print();
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codegen.print();
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vm.init(
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vm.init(
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codegen.get_strs(),
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codegen.get_strs(),
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codegen.get_nums(),
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codegen.get_nums(),
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import.get_file()
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import.get_file()
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);
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);
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if(cmd&VM_EXECTIME)
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if(cmd&VM_EXECTIME)
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{
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{
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clock_t t=clock();
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clock_t t=clock();
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vm.run(codegen.get_code(),cmd&VM_OPCALLNUM);
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vm.run(codegen.get_code(),cmd&VM_OPCALLNUM);
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std::cout<<"process exited after "<<((double)(clock()-t))/CLOCKS_PER_SEC<<"s.\n";
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std::cout<<"process exited after "<<((double)(clock()-t))/CLOCKS_PER_SEC<<"s.\n";
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}
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}
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else if(cmd&VM_EXEC)
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else if(cmd&VM_EXEC)
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vm.run(codegen.get_code(),cmd&VM_OPCALLNUM);
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vm.run(codegen.get_code(),cmd&VM_OPCALLNUM);
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vm.clear();
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vm.clear();
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return;
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return;
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}
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}
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int main(int argc,const char* argv[])
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int main(int argc,const char* argv[])
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{
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{
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std::string filename;
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if(argc==2 && (!strcmp(argv[1],"-v") || !strcmp(argv[1],"--version")))
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uint16_t cmd=0;
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logo();
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if(argc==2 && (!strcmp(argv[1],"-v") || !strcmp(argv[1],"--version")))
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else if(argc==2 && (!strcmp(argv[1],"-h") || !strcmp(argv[1],"--help")))
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logo();
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help_cmd();
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else if(argc==2 && (!strcmp(argv[1],"-h") || !strcmp(argv[1],"--help")))
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else if(argc==2 && argv[1][0]!='-')
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help_cmd();
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execute(argv[1],VM_EXEC);
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else if(argc==2 && argv[1][0]!='-')
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else if(argc>=3)
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cmd|=VM_EXEC;
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{
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else if(argc>=3)
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uint16_t cmd=0;
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{
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for(int i=1;i<argc-1;++i)
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for(int i=1;i<argc-1;++i)
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{
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{
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std::string s(argv[i]);
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std::string s(argv[i]);
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if(s=="--lex" || s=="-l")
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if(s=="--lex" || s=="-l")
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cmd|=VM_LEXINFO;
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cmd|=VM_LEXINFO;
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else if(s=="--ast" || s=="-a")
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else if(s=="--ast" || s=="-a")
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cmd|=VM_ASTINFO;
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cmd|=VM_ASTINFO;
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else if(s=="--code" || s=="-c")
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else if(s=="--code" || s=="-c")
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cmd|=VM_CODEINFO;
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cmd|=VM_CODEINFO;
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else if(s=="--opcnt" || s=="-o")
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else if(s=="--opcnt" || s=="-o")
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cmd|=VM_OPCALLNUM|VM_EXEC;
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cmd|=VM_OPCALLNUM|VM_EXEC;
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else if(s=="--time" || s=="-t")
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else if(s=="--time" || s=="-t")
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cmd|=VM_EXECTIME;
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cmd|=VM_EXECTIME;
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else
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else
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cmderr();
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cmderr();
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}
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}
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execute(argv[argc-1],cmd);
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}
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}
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else
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else
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cmderr();
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cmderr();
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if(argv[argc-1][0]=='-')
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return 0;
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cmderr();
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if(cmd)
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execute(argv[argc-1],cmd);
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return 0;
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}
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}
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256
nasal_import.h
256
nasal_import.h
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@ -1,129 +1,129 @@
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#ifndef __NASAL_IMPORT_H__
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#ifndef __NASAL_IMPORT_H__
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#define __NASAL_IMPORT_H__
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#define __NASAL_IMPORT_H__
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class nasal_import
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class nasal_import
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{
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{
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private:
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private:
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uint32_t error;
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uint32_t error;
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nasal_lexer import_lex;
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nasal_lexer import_lex;
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nasal_parse import_par;
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nasal_parse import_par;
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nasal_ast import_ast;
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nasal_ast import_ast;
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std::vector<std::string> filename_table;
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std::vector<std::string> filename_table;
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void die(const std::string&,const char*);
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void die(const std::string&,const char*);
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bool check_import(const nasal_ast&);
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bool check_import(const nasal_ast&);
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bool check_exist(const std::string&);
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bool check_exist(const std::string&);
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void linker(nasal_ast&,nasal_ast&&);
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void linker(nasal_ast&,nasal_ast&&);
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nasal_ast file_import(nasal_ast&);
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nasal_ast file_import(nasal_ast&);
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nasal_ast load(nasal_ast&,uint16_t);
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nasal_ast load(nasal_ast&,uint16_t);
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public:
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public:
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uint32_t err(){return error;}
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uint32_t err(){return error;}
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void link(nasal_ast&,const std::string&);
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void link(nasal_ast&,const std::string&);
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const nasal_ast& get_root(){return import_ast;}
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const nasal_ast& ast(){return import_ast;}
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const std::vector<std::string>& get_file(){return filename_table;}
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const std::vector<std::string>& get_file(){return filename_table;}
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};
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};
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void nasal_import::die(const std::string& filename,const char* error_stage)
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void nasal_import::die(const std::string& file,const char* stage)
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{
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{
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++error;
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++error;
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std::cout<<"[import] in <\""<<filename<<"\">: error(s) occurred in "<<error_stage<<".\n";
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std::cout<<"[import] in <\""<<file<<"\">: error(s) occurred in "<<stage<<".\n";
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}
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}
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bool nasal_import::check_import(const nasal_ast& node)
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bool nasal_import::check_import(const nasal_ast& node)
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{
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{
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/*
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/*
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only this kind of node can be recognized as 'import':
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only this kind of node can be recognized as 'import':
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call
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call
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id:import
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id:import
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call_func
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call_func
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string:'filename'
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string:'filename'
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*/
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*/
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if(node.get_type()!=ast_call)
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if(node.get_type()!=ast_call)
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return false;
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return false;
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const std::vector<nasal_ast>& ref_vec=node.get_children();
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const std::vector<nasal_ast>& ref_vec=node.get_children();
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if(ref_vec.size()!=2)
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if(ref_vec.size()!=2)
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return false;
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return false;
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if(ref_vec[0].get_str()!="import")
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if(ref_vec[0].get_str()!="import")
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return false;
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return false;
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if(ref_vec[1].get_type()!=ast_callf)
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if(ref_vec[1].get_type()!=ast_callf)
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return false;
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return false;
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if(ref_vec[1].get_children().size()!=1 || ref_vec[1].get_children()[0].get_type()!=ast_str)
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if(ref_vec[1].get_children().size()!=1 || ref_vec[1].get_children()[0].get_type()!=ast_str)
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return false;
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return false;
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return true;
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return true;
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}
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}
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bool nasal_import::check_exist(const std::string& file)
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bool nasal_import::check_exist(const std::string& file)
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{
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{
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// avoid importing the same file
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// avoid importing the same file
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for(auto& fname:filename_table)
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for(auto& fname:filename_table)
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if(file==fname)
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if(file==fname)
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return true;
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return true;
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filename_table.push_back(file);
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filename_table.push_back(file);
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return false;
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return false;
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}
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}
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void nasal_import::linker(nasal_ast& root,nasal_ast&& add_root)
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void nasal_import::linker(nasal_ast& root,nasal_ast&& add_root)
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{
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{
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// add children of add_root to the back of root
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// add children of add_root to the back of root
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for(auto& i:add_root.get_children())
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for(auto& i:add_root.get_children())
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root.add_child(std::move(i));
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root.add_child(std::move(i));
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}
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}
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nasal_ast nasal_import::file_import(nasal_ast& node)
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nasal_ast nasal_import::file_import(nasal_ast& node)
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{
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{
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// initializing
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// initializing
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nasal_ast tmp(0,ast_root);
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nasal_ast tmp(0,ast_root);
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// get filename and set node to ast_null
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// get filename and set node to ast_null
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std::string filename=node.get_children()[1].get_children()[0].get_str();
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std::string filename=node.get_children()[1].get_children()[0].get_str();
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node.clear();
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node.clear();
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// avoid infinite loading loop
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// avoid infinite loading loop
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if(check_exist(filename))
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if(check_exist(filename))
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return tmp;
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return tmp;
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// start importing...
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// start importing...
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import_lex.open(filename);
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import_lex.open(filename);
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import_lex.scan();
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import_lex.scan();
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if(import_lex.err())
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if(import_lex.err())
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{
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{
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die(filename,"lexer");
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die(filename,"lexer");
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return tmp;
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return tmp;
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}
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}
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import_par.compile(import_lex.get_tokens());
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import_par.compile(import_lex.get_tokens());
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if(import_par.err())
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if(import_par.err())
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{
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{
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die(filename,"parser");
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die(filename,"parser");
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return tmp;
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return tmp;
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}
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}
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tmp=std::move(import_par.get_root());
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tmp=std::move(import_par.ast());
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// check if tmp has 'import'
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// check if tmp has 'import'
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return load(tmp,filename_table.size()-1);
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return load(tmp,filename_table.size()-1);
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}
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}
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nasal_ast nasal_import::load(nasal_ast& root,uint16_t fileindex)
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nasal_ast nasal_import::load(nasal_ast& root,uint16_t fileindex)
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{
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{
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nasal_ast new_root(0,ast_root);
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nasal_ast new_root(0,ast_root);
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for(auto& i:root.get_children())
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for(auto& i:root.get_children())
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if(check_import(i))
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if(check_import(i))
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linker(new_root,file_import(i));
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linker(new_root,file_import(i));
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// add root to the back of new_root
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// add root to the back of new_root
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nasal_ast file_head(0,ast_file);
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nasal_ast file_head(0,ast_file);
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file_head.set_num(fileindex);
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file_head.set_num(fileindex);
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new_root.add_child(std::move(file_head));
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new_root.add_child(std::move(file_head));
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linker(new_root,std::move(root));
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linker(new_root,std::move(root));
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return new_root;
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return new_root;
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}
|
}
|
||||||
|
|
||||||
void nasal_import::link(nasal_ast& root,const std::string& self)
|
void nasal_import::link(nasal_ast& root,const std::string& self)
|
||||||
{
|
{
|
||||||
// initializing
|
// initializing
|
||||||
error=0;
|
error=0;
|
||||||
filename_table.clear();
|
filename_table.clear();
|
||||||
filename_table.push_back(self);
|
filename_table.push_back(self);
|
||||||
import_ast.clear();
|
import_ast.clear();
|
||||||
// scan root and import files,then generate a new ast and return to import_ast
|
// scan root and import files,then generate a new ast and return to import_ast
|
||||||
// the main file's index is 0
|
// the main file's index is 0
|
||||||
import_ast=load(root,0);
|
import_ast=load(root,0);
|
||||||
}
|
}
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
725
nasal_lexer.h
725
nasal_lexer.h
|
|
@ -1,362 +1,365 @@
|
||||||
#ifndef __NASAL_LEXER_H__
|
#ifndef __NASAL_LEXER_H__
|
||||||
#define __NASAL_LEXER_H__
|
#define __NASAL_LEXER_H__
|
||||||
|
|
||||||
#define IS_IDENTIFIER(c) ((c=='_')||('a'<=c && c<='z')||('A'<=c&&c<='Z'))
|
#define IS_IDENTIFIER(c) ((c=='_')||('a'<=c && c<='z')||('A'<=c&&c<='Z'))
|
||||||
#define IS_HEX_NUMBER(c) (('0'<=c&&c<='9')||('a'<=c&&c<='f')||('A'<=c && c<='F'))
|
#define IS_HEX_NUMBER(c) (('0'<=c&&c<='9')||('a'<=c&&c<='f')||('A'<=c && c<='F'))
|
||||||
#define IS_OCT_NUMEBR(c) ('0'<=c&&c<='7')
|
#define IS_OCT_NUMEBR(c) ('0'<=c&&c<='7')
|
||||||
#define IS_DIGIT(c) ('0'<=c&&c<='9')
|
#define IS_DIGIT(c) ('0'<=c&&c<='9')
|
||||||
#define IS_STRING(c) (c=='\''||c=='\"'||c=='`')
|
#define IS_STRING(c) (c=='\''||c=='\"'||c=='`')
|
||||||
// single operators have only one character
|
// single operators have only one character
|
||||||
#define IS_SINGLE_OPERATOR(c) (c=='('||c==')'||c=='['||c==']'||c=='{'||c=='}'||c==','||c==';'||c=='|'||c==':'||\
|
#define IS_SINGLE_OPERATOR(c) (c=='('||c==')'||c=='['||c==']'||c=='{'||c=='}'||c==','||c==';'||c=='|'||c==':'||\
|
||||||
c=='?'||c=='`'||c=='&'||c=='@'||c=='%'||c=='$'||c=='^'||c=='\\')
|
c=='?'||c=='`'||c=='&'||c=='@'||c=='%'||c=='$'||c=='^'||c=='\\')
|
||||||
// calculation operators may have two chars, for example: += -= *= /= ~= != == >= <=
|
// calculation operators may have two chars, for example: += -= *= /= ~= != == >= <=
|
||||||
#define IS_CALC_OPERATOR(c) (c=='='||c=='+'||c=='-'||c=='*'||c=='!'||c=='/'||c=='<'||c=='>'||c=='~')
|
#define IS_CALC_OPERATOR(c) (c=='='||c=='+'||c=='-'||c=='*'||c=='!'||c=='/'||c=='<'||c=='>'||c=='~')
|
||||||
#define IS_NOTE(c) (c=='#')
|
#define IS_NOTE(c) (c=='#')
|
||||||
|
|
||||||
enum token_type
|
enum token_type
|
||||||
{
|
{
|
||||||
tok_null=0,
|
tok_null=0,
|
||||||
tok_num,tok_str,tok_id,
|
tok_num,tok_str,tok_id,
|
||||||
tok_for,tok_forindex,tok_foreach,tok_while,
|
tok_for,tok_forindex,tok_foreach,tok_while,
|
||||||
tok_var,tok_func,tok_break,tok_continue,
|
tok_var,tok_func,tok_break,tok_continue,
|
||||||
tok_ret,tok_if,tok_elsif,tok_else,tok_nil,
|
tok_ret,tok_if,tok_elsif,tok_else,tok_nil,
|
||||||
tok_lcurve,tok_rcurve,
|
tok_lcurve,tok_rcurve,
|
||||||
tok_lbracket,tok_rbracket,
|
tok_lbracket,tok_rbracket,
|
||||||
tok_lbrace,tok_rbrace,
|
tok_lbrace,tok_rbrace,
|
||||||
tok_semi,tok_and,tok_or,tok_comma,tok_dot,tok_ellipsis,tok_quesmark,
|
tok_semi,tok_and,tok_or,tok_comma,tok_dot,tok_ellipsis,tok_quesmark,
|
||||||
tok_colon,tok_add,tok_sub,tok_mult,tok_div,tok_link,tok_not,
|
tok_colon,tok_add,tok_sub,tok_mult,tok_div,tok_link,tok_not,
|
||||||
tok_eq,
|
tok_eq,
|
||||||
tok_addeq,tok_subeq,tok_multeq,tok_diveq,tok_lnkeq,
|
tok_addeq,tok_subeq,tok_multeq,tok_diveq,tok_lnkeq,
|
||||||
tok_cmpeq,tok_neq,tok_less,tok_leq,tok_grt,tok_geq,
|
tok_cmpeq,tok_neq,tok_less,tok_leq,tok_grt,tok_geq,
|
||||||
tok_eof
|
tok_eof
|
||||||
};
|
};
|
||||||
|
|
||||||
struct
|
struct
|
||||||
{
|
{
|
||||||
const char* str;
|
const char* str;
|
||||||
const int tok_type;
|
const int tok_type;
|
||||||
}token_table[]=
|
}token_table[]=
|
||||||
{
|
{
|
||||||
{"for" ,tok_for },
|
{"for" ,tok_for },
|
||||||
{"forindex",tok_forindex },
|
{"forindex",tok_forindex },
|
||||||
{"foreach" ,tok_foreach },
|
{"foreach" ,tok_foreach },
|
||||||
{"while" ,tok_while },
|
{"while" ,tok_while },
|
||||||
{"var" ,tok_var },
|
{"var" ,tok_var },
|
||||||
{"func" ,tok_func },
|
{"func" ,tok_func },
|
||||||
{"break" ,tok_break },
|
{"break" ,tok_break },
|
||||||
{"continue",tok_continue },
|
{"continue",tok_continue },
|
||||||
{"return" ,tok_ret },
|
{"return" ,tok_ret },
|
||||||
{"if" ,tok_if },
|
{"if" ,tok_if },
|
||||||
{"elsif" ,tok_elsif },
|
{"elsif" ,tok_elsif },
|
||||||
{"else" ,tok_else },
|
{"else" ,tok_else },
|
||||||
{"nil" ,tok_nil },
|
{"nil" ,tok_nil },
|
||||||
{"(" ,tok_lcurve },
|
{"(" ,tok_lcurve },
|
||||||
{")" ,tok_rcurve },
|
{")" ,tok_rcurve },
|
||||||
{"[" ,tok_lbracket },
|
{"[" ,tok_lbracket },
|
||||||
{"]" ,tok_rbracket },
|
{"]" ,tok_rbracket },
|
||||||
{"{" ,tok_lbrace },
|
{"{" ,tok_lbrace },
|
||||||
{"}" ,tok_rbrace },
|
{"}" ,tok_rbrace },
|
||||||
{";" ,tok_semi },
|
{";" ,tok_semi },
|
||||||
{"and" ,tok_and },
|
{"and" ,tok_and },
|
||||||
{"or" ,tok_or },
|
{"or" ,tok_or },
|
||||||
{"," ,tok_comma },
|
{"," ,tok_comma },
|
||||||
{"." ,tok_dot },
|
{"." ,tok_dot },
|
||||||
{"..." ,tok_ellipsis },
|
{"..." ,tok_ellipsis },
|
||||||
{"?" ,tok_quesmark },
|
{"?" ,tok_quesmark },
|
||||||
{":" ,tok_colon },
|
{":" ,tok_colon },
|
||||||
{"+" ,tok_add },
|
{"+" ,tok_add },
|
||||||
{"-" ,tok_sub },
|
{"-" ,tok_sub },
|
||||||
{"*" ,tok_mult },
|
{"*" ,tok_mult },
|
||||||
{"/" ,tok_div },
|
{"/" ,tok_div },
|
||||||
{"~" ,tok_link },
|
{"~" ,tok_link },
|
||||||
{"!" ,tok_not },
|
{"!" ,tok_not },
|
||||||
{"=" ,tok_eq },
|
{"=" ,tok_eq },
|
||||||
{"+=" ,tok_addeq },
|
{"+=" ,tok_addeq },
|
||||||
{"-=" ,tok_subeq },
|
{"-=" ,tok_subeq },
|
||||||
{"*=" ,tok_multeq },
|
{"*=" ,tok_multeq },
|
||||||
{"/=" ,tok_diveq },
|
{"/=" ,tok_diveq },
|
||||||
{"~=" ,tok_lnkeq },
|
{"~=" ,tok_lnkeq },
|
||||||
{"==" ,tok_cmpeq },
|
{"==" ,tok_cmpeq },
|
||||||
{"!=" ,tok_neq },
|
{"!=" ,tok_neq },
|
||||||
{"<" ,tok_less },
|
{"<" ,tok_less },
|
||||||
{"<=" ,tok_leq },
|
{"<=" ,tok_leq },
|
||||||
{">" ,tok_grt },
|
{">" ,tok_grt },
|
||||||
{">=" ,tok_geq },
|
{">=" ,tok_geq },
|
||||||
{nullptr ,-1 }
|
{nullptr ,-1 }
|
||||||
};
|
};
|
||||||
|
|
||||||
struct token
|
struct token
|
||||||
{
|
{
|
||||||
uint32_t line;
|
uint32_t line;
|
||||||
uint32_t type;
|
uint32_t type;
|
||||||
std::string str;
|
std::string str;
|
||||||
token(uint32_t l=0,uint32_t t=tok_null,std::string s=""){line=l;type=t;str=s;}
|
token(uint32_t l=0,uint32_t t=tok_null,std::string s=""){line=l;type=t;str=s;}
|
||||||
};
|
};
|
||||||
|
|
||||||
class nasal_lexer
|
class nasal_lexer
|
||||||
{
|
{
|
||||||
private:
|
private:
|
||||||
uint32_t error;
|
uint32_t error;
|
||||||
uint32_t line;
|
uint32_t line;
|
||||||
uint32_t ptr;
|
uint32_t ptr;
|
||||||
size_t res_size;
|
size_t res_size;
|
||||||
std::string line_code;
|
std::string line_code;
|
||||||
std::string res;
|
std::string res;
|
||||||
std::vector<token> token_list;
|
std::vector<token> token_list;
|
||||||
uint32_t get_type(const std::string&);
|
uint32_t get_type(const std::string&);
|
||||||
void die(const char*);
|
void die(const char*);
|
||||||
std::string id_gen();
|
std::string id_gen();
|
||||||
std::string num_gen();
|
std::string num_gen();
|
||||||
std::string str_gen();
|
std::string str_gen();
|
||||||
public:
|
public:
|
||||||
void open(const std::string&);
|
void open(const std::string&);
|
||||||
void scan();
|
void scan();
|
||||||
void print();
|
void print();
|
||||||
uint32_t err(){return error;}
|
uint32_t err(){return error;}
|
||||||
const std::vector<token>& get_tokens(){return token_list;}
|
const std::vector<token>& get_tokens(){return token_list;}
|
||||||
};
|
};
|
||||||
|
|
||||||
void nasal_lexer::open(const std::string& filename)
|
void nasal_lexer::open(const std::string& filename)
|
||||||
{
|
{
|
||||||
error=0;
|
error=0;
|
||||||
res.clear();
|
res.clear();
|
||||||
std::ifstream fin(filename,std::ios::binary);
|
std::ifstream fin(filename,std::ios::binary);
|
||||||
if(fin.fail())
|
if(fin.fail())
|
||||||
{
|
{
|
||||||
++error;
|
++error;
|
||||||
std::cout<<"[lexer] cannot open file <"<<filename<<">.\n";
|
std::cout<<"[lexer] cannot open file <"<<filename<<">.\n";
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
while(!fin.eof())
|
std::stringstream ss;
|
||||||
{
|
ss<<fin.rdbuf();
|
||||||
char c=fin.get();
|
res=ss.str();
|
||||||
if(fin.eof())
|
// while(!fin.eof())
|
||||||
break;
|
// {
|
||||||
res+=c;
|
// char c=fin.get();
|
||||||
}
|
// if(fin.eof())
|
||||||
return;
|
// break;
|
||||||
}
|
// res+=c;
|
||||||
|
// }
|
||||||
uint32_t nasal_lexer::get_type(const std::string& tk_str)
|
return;
|
||||||
{
|
}
|
||||||
for(int i=0;token_table[i].str;++i)
|
|
||||||
if(tk_str==token_table[i].str)
|
uint32_t nasal_lexer::get_type(const std::string& tk_str)
|
||||||
return token_table[i].tok_type;
|
{
|
||||||
return tok_null;
|
for(int i=0;token_table[i].str;++i)
|
||||||
}
|
if(tk_str==token_table[i].str)
|
||||||
|
return token_table[i].tok_type;
|
||||||
void nasal_lexer::die(const char* error_info)
|
return tok_null;
|
||||||
{
|
}
|
||||||
++error;
|
|
||||||
std::cout<<"[lexer] line "<<line<<" column "<<line_code.length()<<": \n"<<line_code<<"\n";
|
void nasal_lexer::die(const char* error_info)
|
||||||
for(auto i:line_code)
|
{
|
||||||
std::cout<<(i=='\t'?'\t':' ');
|
++error;
|
||||||
std::cout<<"^"<<error_info<<'\n';
|
std::cout<<"[lexer] line "<<line<<" column "<<line_code.length()<<": \n"<<line_code<<"\n";
|
||||||
return;
|
for(auto i:line_code)
|
||||||
}
|
std::cout<<(i=='\t'?'\t':' ');
|
||||||
|
std::cout<<"^"<<error_info<<'\n';
|
||||||
std::string nasal_lexer::id_gen()
|
return;
|
||||||
{
|
}
|
||||||
std::string token_str="";
|
|
||||||
while(ptr<res_size && (IS_IDENTIFIER(res[ptr])||IS_DIGIT(res[ptr])))
|
std::string nasal_lexer::id_gen()
|
||||||
token_str+=res[ptr++];
|
{
|
||||||
line_code+=token_str;
|
std::string token_str="";
|
||||||
return token_str;
|
while(ptr<res_size && (IS_IDENTIFIER(res[ptr])||IS_DIGIT(res[ptr])))
|
||||||
// after running this process, ptr will point to the next token's beginning character
|
token_str+=res[ptr++];
|
||||||
}
|
line_code+=token_str;
|
||||||
|
return token_str;
|
||||||
std::string nasal_lexer::num_gen()
|
// after running this process, ptr will point to the next token's beginning character
|
||||||
{
|
}
|
||||||
// generate hex number
|
|
||||||
if(ptr+1<res_size && res[ptr]=='0' && res[ptr+1]=='x')
|
std::string nasal_lexer::num_gen()
|
||||||
{
|
{
|
||||||
std::string token_str="0x";
|
// generate hex number
|
||||||
ptr+=2;
|
if(ptr+1<res_size && res[ptr]=='0' && res[ptr+1]=='x')
|
||||||
while(ptr<res_size && IS_HEX_NUMBER(res[ptr]))
|
{
|
||||||
token_str+=res[ptr++];
|
std::string token_str="0x";
|
||||||
line_code+=token_str;
|
ptr+=2;
|
||||||
if(token_str.length()<3)// "0x"
|
while(ptr<res_size && IS_HEX_NUMBER(res[ptr]))
|
||||||
die("incorrect number.");
|
token_str+=res[ptr++];
|
||||||
return token_str;
|
line_code+=token_str;
|
||||||
}
|
if(token_str.length()<3)// "0x"
|
||||||
// generate oct number
|
die("incorrect number.");
|
||||||
else if(ptr+1<res_size && res[ptr]=='0' && res[ptr+1]=='o')
|
return token_str;
|
||||||
{
|
}
|
||||||
std::string token_str="0o";
|
// generate oct number
|
||||||
ptr+=2;
|
else if(ptr+1<res_size && res[ptr]=='0' && res[ptr+1]=='o')
|
||||||
while(ptr<res_size && IS_OCT_NUMEBR(res[ptr]))
|
{
|
||||||
token_str+=res[ptr++];
|
std::string token_str="0o";
|
||||||
line_code+=token_str;
|
ptr+=2;
|
||||||
if(token_str.length()<3)// "0o"
|
while(ptr<res_size && IS_OCT_NUMEBR(res[ptr]))
|
||||||
die("incorrect number.");
|
token_str+=res[ptr++];
|
||||||
return token_str;
|
line_code+=token_str;
|
||||||
}
|
if(token_str.length()<3)// "0o"
|
||||||
// generate dec number
|
die("incorrect number.");
|
||||||
// dec number -> [0~9][0~9]*(.[0~9]*)(e|E(+|-)0|[1~9][0~9]*)
|
return token_str;
|
||||||
std::string token_str="";
|
}
|
||||||
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
// generate dec number
|
||||||
token_str+=res[ptr++];
|
// dec number -> [0~9][0~9]*(.[0~9]*)(e|E(+|-)0|[1~9][0~9]*)
|
||||||
if(ptr<res_size && res[ptr]=='.')
|
std::string token_str="";
|
||||||
{
|
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
||||||
token_str+=res[ptr++];
|
token_str+=res[ptr++];
|
||||||
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
if(ptr<res_size && res[ptr]=='.')
|
||||||
token_str+=res[ptr++];
|
{
|
||||||
// "xxxx." is not a correct number
|
token_str+=res[ptr++];
|
||||||
if(token_str.back()=='.')
|
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
||||||
{
|
token_str+=res[ptr++];
|
||||||
line_code+=token_str;
|
// "xxxx." is not a correct number
|
||||||
die("incorrect number.");
|
if(token_str.back()=='.')
|
||||||
return "0";
|
{
|
||||||
}
|
line_code+=token_str;
|
||||||
}
|
die("incorrect number.");
|
||||||
if(ptr<res_size && (res[ptr]=='e' || res[ptr]=='E'))
|
return "0";
|
||||||
{
|
}
|
||||||
token_str+=res[ptr++];
|
}
|
||||||
if(ptr<res_size && (res[ptr]=='-' || res[ptr]=='+'))
|
if(ptr<res_size && (res[ptr]=='e' || res[ptr]=='E'))
|
||||||
token_str+=res[ptr++];
|
{
|
||||||
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
token_str+=res[ptr++];
|
||||||
token_str+=res[ptr++];
|
if(ptr<res_size && (res[ptr]=='-' || res[ptr]=='+'))
|
||||||
// "xxxe(-|+)" is not a correct number
|
token_str+=res[ptr++];
|
||||||
if(token_str.back()=='e' || token_str.back()=='E' || token_str.back()=='-' || token_str.back()=='+')
|
while(ptr<res_size && IS_DIGIT(res[ptr]))
|
||||||
{
|
token_str+=res[ptr++];
|
||||||
line_code+=token_str;
|
// "xxxe(-|+)" is not a correct number
|
||||||
die("incorrect number.");
|
if(token_str.back()=='e' || token_str.back()=='E' || token_str.back()=='-' || token_str.back()=='+')
|
||||||
return "0";
|
{
|
||||||
}
|
line_code+=token_str;
|
||||||
}
|
die("incorrect number.");
|
||||||
line_code+=token_str;
|
return "0";
|
||||||
return token_str;
|
}
|
||||||
}
|
}
|
||||||
|
line_code+=token_str;
|
||||||
std::string nasal_lexer::str_gen()
|
return token_str;
|
||||||
{
|
}
|
||||||
std::string token_str="";
|
|
||||||
char str_begin=res[ptr];
|
std::string nasal_lexer::str_gen()
|
||||||
line_code+=str_begin;
|
{
|
||||||
while(++ptr<res_size && res[ptr]!=str_begin)
|
std::string token_str="";
|
||||||
{
|
char str_begin=res[ptr];
|
||||||
line_code+=res[ptr];
|
line_code+=str_begin;
|
||||||
if(res[ptr]=='\n')
|
while(++ptr<res_size && res[ptr]!=str_begin)
|
||||||
{
|
{
|
||||||
line_code="";
|
line_code+=res[ptr];
|
||||||
++line;
|
if(res[ptr]=='\n')
|
||||||
}
|
{
|
||||||
if(res[ptr]=='\\' && ptr+1<res_size)
|
line_code="";
|
||||||
{
|
++line;
|
||||||
line_code+=res[++ptr];
|
}
|
||||||
switch(res[ptr])
|
if(res[ptr]=='\\' && ptr+1<res_size)
|
||||||
{
|
{
|
||||||
case 'a': token_str.push_back('\a');break;
|
line_code+=res[++ptr];
|
||||||
case 'b': token_str.push_back('\b');break;
|
switch(res[ptr])
|
||||||
case 'f': token_str.push_back('\f');break;
|
{
|
||||||
case 'n': token_str.push_back('\n');break;
|
case 'a': token_str.push_back('\a');break;
|
||||||
case 'r': token_str.push_back('\r');break;
|
case 'b': token_str.push_back('\b');break;
|
||||||
case 't': token_str.push_back('\t');break;
|
case 'f': token_str.push_back('\f');break;
|
||||||
case 'v': token_str.push_back('\v');break;
|
case 'n': token_str.push_back('\n');break;
|
||||||
case '?': token_str.push_back('\?');break;
|
case 'r': token_str.push_back('\r');break;
|
||||||
case '0': token_str.push_back('\0');break;
|
case 't': token_str.push_back('\t');break;
|
||||||
case '\\':token_str.push_back('\\');break;
|
case 'v': token_str.push_back('\v');break;
|
||||||
case '\'':token_str.push_back('\'');break;
|
case '?': token_str.push_back('\?');break;
|
||||||
case '\"':token_str.push_back('\"');break;
|
case '0': token_str.push_back('\0');break;
|
||||||
default: token_str.push_back(res[ptr]);break;
|
case '\\':token_str.push_back('\\');break;
|
||||||
}
|
case '\'':token_str.push_back('\'');break;
|
||||||
continue;
|
case '\"':token_str.push_back('\"');break;
|
||||||
}
|
default: token_str.push_back(res[ptr]);break;
|
||||||
token_str+=res[ptr];
|
}
|
||||||
}
|
continue;
|
||||||
// check if this string ends with a " or '
|
}
|
||||||
if(ptr++>=res_size)
|
token_str+=res[ptr];
|
||||||
die("get EOF when generating string.");
|
}
|
||||||
if(str_begin=='`' && token_str.length()!=1)
|
// check if this string ends with a " or '
|
||||||
die("\'`\' is used for string that includes one character.");
|
if(ptr++>=res_size)
|
||||||
return token_str;
|
die("get EOF when generating string.");
|
||||||
}
|
if(str_begin=='`' && token_str.length()!=1)
|
||||||
|
die("\'`\' is used for string that includes one character.");
|
||||||
void nasal_lexer::scan()
|
return token_str;
|
||||||
{
|
}
|
||||||
token_list.clear();
|
|
||||||
line=1;
|
void nasal_lexer::scan()
|
||||||
ptr=0;
|
{
|
||||||
line_code="";
|
token_list.clear();
|
||||||
res_size=res.size();
|
line=1;
|
||||||
|
ptr=0;
|
||||||
std::string token_str;
|
line_code="";
|
||||||
while(ptr<res_size)
|
res_size=res.size();
|
||||||
{
|
|
||||||
while(ptr<res_size && (res[ptr]==' ' || res[ptr]=='\n' || res[ptr]=='\t' || res[ptr]=='\r' || res[ptr]<0))
|
std::string token_str;
|
||||||
{
|
while(ptr<res_size)
|
||||||
// these characters will be ignored, and '\n' will cause ++line
|
{
|
||||||
line_code+=res[ptr];
|
while(ptr<res_size && (res[ptr]==' ' || res[ptr]=='\n' || res[ptr]=='\t' || res[ptr]=='\r' || res[ptr]<0))
|
||||||
if(res[ptr++]=='\n')
|
{
|
||||||
{
|
// these characters will be ignored, and '\n' will cause ++line
|
||||||
++line;
|
line_code+=res[ptr];
|
||||||
line_code="";
|
if(res[ptr++]=='\n')
|
||||||
}
|
{
|
||||||
}
|
++line;
|
||||||
if(ptr>=res_size) break;
|
line_code="";
|
||||||
if(IS_IDENTIFIER(res[ptr]))
|
}
|
||||||
{
|
}
|
||||||
token_str=id_gen();
|
if(ptr>=res_size) break;
|
||||||
token_list.push_back({line,get_type(token_str),token_str});
|
if(IS_IDENTIFIER(res[ptr]))
|
||||||
if(!token_list.back().type)
|
{
|
||||||
token_list.back().type=tok_id;
|
token_str=id_gen();
|
||||||
}
|
token_list.push_back({line,get_type(token_str),token_str});
|
||||||
else if(IS_DIGIT(res[ptr]))
|
if(!token_list.back().type)
|
||||||
token_list.push_back({line,tok_num,num_gen()});
|
token_list.back().type=tok_id;
|
||||||
else if(IS_STRING(res[ptr]))
|
}
|
||||||
token_list.push_back({line,tok_str,str_gen()});
|
else if(IS_DIGIT(res[ptr]))
|
||||||
else if(IS_SINGLE_OPERATOR(res[ptr]))
|
token_list.push_back({line,tok_num,num_gen()});
|
||||||
{
|
else if(IS_STRING(res[ptr]))
|
||||||
token_str=res[ptr];
|
token_list.push_back({line,tok_str,str_gen()});
|
||||||
line_code+=res[ptr];
|
else if(IS_SINGLE_OPERATOR(res[ptr]))
|
||||||
uint32_t type=get_type(token_str);
|
{
|
||||||
if(!type)
|
token_str=res[ptr];
|
||||||
die("incorrect operator.");
|
line_code+=res[ptr];
|
||||||
token_list.push_back({line,type,token_str});
|
uint32_t type=get_type(token_str);
|
||||||
++ptr;
|
if(!type)
|
||||||
}
|
die("incorrect operator.");
|
||||||
else if(res[ptr]=='.')
|
token_list.push_back({line,type,token_str});
|
||||||
{
|
++ptr;
|
||||||
if(ptr+2<res_size && res[ptr+1]=='.' && res[ptr+2]=='.')
|
}
|
||||||
{
|
else if(res[ptr]=='.')
|
||||||
token_str="...";
|
{
|
||||||
ptr+=3;
|
if(ptr+2<res_size && res[ptr+1]=='.' && res[ptr+2]=='.')
|
||||||
}
|
{
|
||||||
else
|
token_str="...";
|
||||||
{
|
ptr+=3;
|
||||||
token_str=".";
|
}
|
||||||
++ptr;
|
else
|
||||||
}
|
{
|
||||||
line_code+=token_str;
|
token_str=".";
|
||||||
token_list.push_back({line,get_type(token_str),token_str});
|
++ptr;
|
||||||
}
|
}
|
||||||
else if(IS_CALC_OPERATOR(res[ptr]))
|
line_code+=token_str;
|
||||||
{
|
token_list.push_back({line,get_type(token_str),token_str});
|
||||||
// get calculation operator
|
}
|
||||||
token_str=res[ptr++];
|
else if(IS_CALC_OPERATOR(res[ptr]))
|
||||||
if(ptr<res_size && res[ptr]=='=')
|
{
|
||||||
token_str+=res[ptr++];
|
// get calculation operator
|
||||||
line_code+=token_str;
|
token_str=res[ptr++];
|
||||||
token_list.push_back({line,get_type(token_str),token_str});
|
if(ptr<res_size && res[ptr]=='=')
|
||||||
}
|
token_str+=res[ptr++];
|
||||||
else if(IS_NOTE(res[ptr]))// avoid note, after this process ptr will point to a '\n', so next loop line counter+1
|
line_code+=token_str;
|
||||||
while(++ptr<res_size && res[ptr]!='\n');
|
token_list.push_back({line,get_type(token_str),token_str});
|
||||||
else
|
}
|
||||||
{
|
else if(IS_NOTE(res[ptr]))// avoid note, after this process ptr will point to a '\n', so next loop line counter+1
|
||||||
line_code+=res[ptr++];
|
while(++ptr<res_size && res[ptr]!='\n');
|
||||||
die("unknown character.");
|
else
|
||||||
}
|
{
|
||||||
}
|
line_code+=res[ptr++];
|
||||||
token_list.push_back({line,tok_eof,""});
|
die("unknown character.");
|
||||||
res.clear();
|
}
|
||||||
return;
|
}
|
||||||
}
|
token_list.push_back({line,tok_eof,""});
|
||||||
|
res.clear();
|
||||||
void nasal_lexer::print()
|
return;
|
||||||
{
|
}
|
||||||
for(auto& tok:token_list)
|
|
||||||
std::cout<<"("<<tok.line<<" | "<<tok.str<<")\n";
|
void nasal_lexer::print()
|
||||||
return;
|
{
|
||||||
}
|
for(auto& tok:token_list)
|
||||||
|
std::cout<<"("<<tok.line<<" | "<<tok.str<<")\n";
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
2028
nasal_parse.h
2028
nasal_parse.h
File diff suppressed because it is too large
Load Diff
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Reference in New Issue