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Valk Richard Li
2020-10-19 07:40:43 -07:00
committed by GitHub
parent 3f5a15f1e3
commit b6d1b3ab7c
2 changed files with 31 additions and 25 deletions
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version3.0/nasal_lexer.h
+16 -10
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@@ -207,34 +207,40 @@ std::string nasal_lexer::string_gen(std::vector<char>& res,int& ptr,int& line)
{
int res_size=res.size();
std::string token_str="";
char str_begin=res[ptr];
++ptr;
char str_begin=res[ptr++];
if(ptr>=res_size) return token_str;
while(ptr<res_size && res[ptr]!=str_begin)
{
token_str+=res[ptr];
if(res[ptr]=='\n') ++line;
if(res[ptr]=='\\' && ptr+1<res.size())
{
++ptr;
switch(res[ptr])
{
case '\\':token_str.pop_back();token_str.push_back('\\');break;
case 'r': token_str.pop_back();token_str.push_back('\r');break;
case 't': token_str.pop_back();token_str.push_back('\t');break;
case 'n': token_str.pop_back();token_str.push_back('\n');break;
case '\'':token_str.pop_back();token_str.push_back('\'');break;
case '\"':token_str.pop_back();token_str.push_back('\"');break;
case 'a':token_str.push_back('\a');break;
case 'b':token_str.push_back('\b');break;
case 'f':token_str.push_back('\f');break;
case 'n':token_str.push_back('\n');break;
case 'r':token_str.push_back('\r');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;
}
}
else
token_str+=res[ptr];
++ptr;
}
// check if this string ends with a " or '
if(ptr>=res_size)
{
++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;
return token_str;