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Lexer: Added end-boundary sensitivity to ::isLiteral and ::isOneOf

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This commit is contained in:
Paul Beckingham
2015-07-26 10:48:26 -04:00
parent 3e74aa51e2
commit 391d527328
2 changed files with 12 additions and 10 deletions
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18
src/Lexer.cpp
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@@ -1101,14 +1101,16 @@ bool Lexer::isWord (std::string& token, Lexer::Type& type)
}
////////////////////////////////////////////////////////////////////////////////
bool Lexer::isLiteral (const std::string& literal)
bool Lexer::isLiteral (const std::string& literal, bool endBoundary)
{
if (_text.find (literal, _cursor) == 0 &&
(isEOS () ||
Lexer::isWhitespace (_text[_cursor + literal.length ()]) ||
Lexer::isSingleCharOperator (_text[_cursor + literal.length ()])))
auto len = literal.length ();
if (_text.find (literal, _cursor) == _cursor &&
(! endBoundary ||
_text.length () == _cursor + len ||
Lexer::isWhitespace (_text[_cursor + len]) ||
Lexer::isSingleCharOperator (_text[_cursor + len])))
{
_cursor += literal.length ();
_cursor += len;
return true;
}
@@ -1116,10 +1118,10 @@ bool Lexer::isLiteral (const std::string& literal)
}
////////////////////////////////////////////////////////////////////////////////
bool Lexer::isOneOf (const std::vector <std::string>& options)
bool Lexer::isOneOf (const std::vector <std::string>& options, bool endBoundary)
{
for (auto& item : options)
if (isLiteral (item))
if (isLiteral (item, endBoundary))
return true;
return false;

4
src/Lexer.h
View File

@@ -105,8 +105,8 @@ public:
bool isDOM (std::string&, Lexer::Type&);
bool isIdentifier (std::string&, Lexer::Type&);
bool isWord (std::string&, Lexer::Type&);
bool isLiteral (const std::string&);
bool isOneOf (const std::vector <std::string>&);
bool isLiteral (const std::string&, bool);
bool isOneOf (const std::vector <std::string>&, bool);
private:
std::string _text;