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Nasal-Interpreter
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Valk Richard Li 2020-10-19 07:40:43 -07:00 committed by GitHub
parent 368baa0561
commit e2a50a61e6
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2 changed files with 31 additions and 25 deletions
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30
version3.0/main.cpp
View File

@ -27,11 +27,11 @@ void help()
void logo() void logo()
{ {
std::cout<<" __ _ "<<std::endl; std::cout<<" __ _ \n";
std::cout<<" /\\ \\ \\__ _ ___ __ _| | "<<std::endl; std::cout<<" /\\ \\ \\__ _ ___ __ _| | \n";
std::cout<<" / \\/ / _` / __|/ _` | | "<<std::endl; std::cout<<" / \\/ / _` / __|/ _` | | \n";
std::cout<<" / /\\ / (_| \\__ \\ (_| | | "<<std::endl; std::cout<<" / /\\ / (_| \\__ \\ (_| | | \n";
std::cout<<" \\_\\ \\/ \\__,_|___/\\__,_|_|"<<std::endl; std::cout<<" \\_\\ \\/ \\__,_|___/\\__,_|_|\n";
return; return;
} }
@ -41,13 +41,13 @@ void del_func()
lexer.clear(); lexer.clear();
parse.clear(); parse.clear();
inputfile="null"; inputfile="null";
std::cout<<">> [Delete] complete."<<std::endl; std::cout<<">> [Delete] complete.\n";
return; return;
} }
void die(std::string stage,std::string filename) void die(std::string stage,std::string filename)
{ {
std::cout<<">> ["<<stage<<"] in <\""<<filename<<"\">: error(s) occurred,stop."<<std::endl; std::cout<<">> ["<<stage<<"] in <\""<<filename<<"\">: error(s) occurred,stop.\n";
return; return;
} }
@ -180,19 +180,19 @@ int main()
#endif #endif
logo(); logo();
#ifdef _WIN32 #ifdef _WIN32
std::cout<<">> [system] Windows system."<<std::endl; std::cout<<">> [system] Windows system.\n";
#endif #endif
#ifdef _linux_ #ifdef _linux_
std::cout<<">> [system] Linux system."<<std::endl; std::cout<<">> [system] Linux system.\n";
#endif #endif
#ifdef TARGET_OS_MAC #ifdef TARGET_OS_MAC
std::cout<<">> [system] MacOS system."<<std::endl; std::cout<<">> [system] MacOS system.\n";
#endif #endif
std::cout<<">> Nasal interpreter ver 3.0 ."<<std::endl; std::cout<<">> Nasal interpreter ver 3.0 .\n";
std::cout<<">> Code: https://github.com/ValKmjolnir/Nasal-Interpreter"<<std::endl; std::cout<<">> Code: https://github.com/ValKmjolnir/Nasal-Interpreter\n";
std::cout<<">> Info: http://wiki.flightgear.org/Nasal_scripting_language"<<std::endl; std::cout<<">> Info: http://wiki.flightgear.org/Nasal_scripting_language\n";
std::cout<<">> Input \"help\" to get help ."<<std::endl; std::cout<<">> Input \"help\" to get help .\n";
while(1) while(1)
{ {
std::cout<<">> "; std::cout<<">> ";
@ -238,7 +238,7 @@ int main()
std::ifstream fin(command); std::ifstream fin(command);
if(fin.fail()) if(fin.fail())
{ {
std::cout<<">> [file] cannot open file \""<<command<<"\"."<<std::endl; std::cout<<">> [file] cannot open file \""<<command<<"\".\n";
inputfile="null"; inputfile="null";
} }
fin.close(); fin.close();

26
version3.0/nasal_lexer.h
View File

@ -207,34 +207,40 @@ std::string nasal_lexer::string_gen(std::vector<char>& res,int& ptr,int& line)
{ {
int res_size=res.size(); int res_size=res.size();
std::string token_str=""; std::string token_str="";
char str_begin=res[ptr]; char str_begin=res[ptr++];
++ptr;
if(ptr>=res_size) return token_str; if(ptr>=res_size) return token_str;
while(ptr<res_size && res[ptr]!=str_begin) while(ptr<res_size && res[ptr]!=str_begin)
{ {
token_str+=res[ptr];
if(res[ptr]=='\n') ++line; if(res[ptr]=='\n') ++line;
if(res[ptr]=='\\' && ptr+1<res.size()) if(res[ptr]=='\\' && ptr+1<res.size())
{ {
++ptr; ++ptr;
switch(res[ptr]) switch(res[ptr])
{ {
case '\\':token_str.pop_back();token_str.push_back('\\');break; case 'a':token_str.push_back('\a');break;
case 'r': token_str.pop_back();token_str.push_back('\r');break; case 'b':token_str.push_back('\b');break;
case 't': token_str.pop_back();token_str.push_back('\t');break; case 'f':token_str.push_back('\f');break;
case 'n': token_str.pop_back();token_str.push_back('\n');break; case 'n':token_str.push_back('\n');break;
case '\'':token_str.pop_back();token_str.push_back('\'');break; case 'r':token_str.push_back('\r');break;
case '\"':token_str.pop_back();token_str.push_back('\"');break; case 't':token_str.push_back('\t');break;
case 'v':token_str.push_back('\v');break;
case '?':token_str.push_back('\?');break;
case '0':token_str.push_back('\0');break;
case '\\':token_str.push_back('\\');break;
case '\'':token_str.push_back('\'');break;
case '\"':token_str.push_back('\"');break;
default: token_str.push_back(res[ptr]);break; default: token_str.push_back(res[ptr]);break;
} }
} }
else
token_str+=res[ptr];
++ptr; ++ptr;
} }
// check if this string ends with a " or ' // check if this string ends with a " or '
if(ptr>=res_size) if(ptr>=res_size)
{ {
++error; ++error;
std::cout<<">> [lexer] line "<<line<<": this string must have a \' "<<str_begin<<" \' as its end."<<std::endl; std::cout<<">> [lexer] line "<<line<<": get EOF when generating string.\n";
} }
++ptr; ++ptr;
return token_str; return token_str;