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Lexer: Added path support

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This commit is contained in:
Paul Beckingham 2015-12-24 00:26:34 -05:00
parent 703ec44ad0
commit 476551c563
3 changed files with 54 additions and 1 deletions
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47
src/Lexer.cpp
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@ -55,6 +55,7 @@ bool Lexer::token (std::string& token, Lexer::Type& type)
isURL (token, type) ||
isHexNumber (token, type) ||
isNumber (token, type) ||
isPath (token, type) ||
isPattern (token, type) ||
isWord (token, type))
return true;
@ -72,6 +73,7 @@ const std::string Lexer::typeName (const Lexer::Type& type)
case Lexer::Type::hex: return "hex";
case Lexer::Type::string: return "string";
case Lexer::Type::url: return "url";
case Lexer::Type::path: return "path";
case Lexer::Type::pattern: return "pattern";
case Lexer::Type::word: return "word";
}
@ -432,6 +434,50 @@ bool Lexer::isURL (std::string& token, Lexer::Type& type)
return false;
}
////////////////////////////////////////////////////////////////////////////////
// Lexer::Type::path
// ( / <non-slash, non-whitespace> )+
bool Lexer::isPath (std::string& token, Lexer::Type& type)
{
std::size_t marker = _cursor;
int slashCount = 0;
while (1)
{
if (_text[marker] == '/')
{
++marker;
++slashCount;
}
else
break;
if (_text[marker] &&
! isWhitespace (_text[marker]) &&
_text[marker] != '/')
{
utf8_next_char (_text, marker);
while (_text[marker] &&
! isWhitespace (_text[marker]) &&
_text[marker] != '/')
utf8_next_char (_text, marker);
}
else
break;
}
if (marker > _cursor &&
slashCount > 3)
{
type = Lexer::Type::path;
token = _text.substr (_cursor, marker - _cursor);
_cursor = marker;
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
// Lexer::Type::pattern
// / <unquoted-string> / <EOS> | <isWhitespace>
@ -461,6 +507,7 @@ std::string Lexer::typeToString (Lexer::Type type)
else if (type == Lexer::Type::hex) return std::string ("\033[38;5;7m\033[48;5;14m") + "hex" + "\033[0m";
else if (type == Lexer::Type::number) return std::string ("\033[38;5;7m\033[48;5;6m") + "number" + "\033[0m";
else if (type == Lexer::Type::url) return std::string ("\033[38;5;7m\033[48;5;4m") + "url" + "\033[0m";
else if (type == Lexer::Type::path) return std::string ("\033[37;102m") + "path" + "\033[0m";
else if (type == Lexer::Type::pattern) return std::string ("\033[37;42m") + "pattern" + "\033[0m";
else if (type == Lexer::Type::word) return std::string ("\033[38;5;15m\033[48;5;236m") + "word" + "\033[0m";
else return std::string ("\033[37;41m") + "unknown" + "\033[0m";