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AttributesParser.cpp
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169 lines (143 loc) · 4.12 KB
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//
// AttributesParser.cpp
//
// $Id: //poco/1.4/CppParser/src/AttributesParser.cpp#1 $
//
// Library: CppParser
// Package: Attributes
// Module: AttributesParser
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/CppParser/AttributesParser.h"
#include "Poco/CppParser/CppToken.h"
#include "Poco/Exception.h"
using Poco::Token;
using Poco::SyntaxException;
namespace Poco {
namespace CppParser {
AttributesParser::AttributesParser(Attributes& attrs, std::istream& istr):
_attrs(attrs),
_tokenizer(istr)
{
}
AttributesParser::~AttributesParser()
{
}
void AttributesParser::parse()
{
const Token* pNext = next();
if (!isEOF(pNext))
{
pNext = parseAttributes(pNext);
}
if (!isEOF(pNext))
throw Poco::SyntaxException("extra tokens found in attribute declaration");
}
const Token* AttributesParser::parseAttributes(const Token* pNext)
{
pNext = parseAttribute(pNext);
while (isOperator(pNext, OperatorToken::OP_COMMA) || isIdentifier(pNext))
{
if (!isIdentifier(pNext)) pNext = next();
pNext = parseAttribute(pNext);
}
return pNext;
}
const Token* AttributesParser::parseAttribute(const Token* pNext)
{
std::string id;
std::string value;
pNext = parseIdentifier(pNext, id);
if (isOperator(pNext, OperatorToken::OP_ASSIGN))
{
pNext = next();
if (isOperator(pNext, OperatorToken::OP_OPENBRACE))
{
pNext = parseComplexAttribute(pNext, id);
}
else if (isIdentifier(pNext) || isLiteral(pNext))
{
value = pNext->asString();
pNext = next();
}
else throw SyntaxException("bad attribute declaration");
}
setAttribute(id, value);
return pNext;
}
const Token* AttributesParser::parseComplexAttribute(const Token* pNext, const std::string& id)
{
poco_assert_dbg (isOperator(pNext, OperatorToken::OP_OPENBRACE));
pNext = next();
std::string oldId(_id);
if (!_id.empty())
{
_id.append(".");
_id.append(id);
}
else _id = id;
pNext = parseAttributes(pNext);
_id = oldId;
if (isOperator(pNext, OperatorToken::OP_CLOSBRACE))
pNext = next();
else
throw SyntaxException("bad attribute declaration");
return pNext;
}
const Token* AttributesParser::parseIdentifier(const Token* pNext, std::string& id)
{
if (isIdentifier(pNext))
{
id = pNext->asString();
pNext = next();
while (isOperator(pNext, OperatorToken::OP_PERIOD))
{
id.append(".");
pNext = next();
if (isIdentifier(pNext))
{
id.append(pNext->asString());
pNext = next();
}
else throw SyntaxException("identifier expected");
}
return pNext;
}
else throw SyntaxException("identifier expected");
}
void AttributesParser::setAttribute(const std::string& name, const std::string& value)
{
std::string n;
if (!_id.empty())
{
n.append(_id);
n.append(".");
}
n.append(name);
_attrs.set(n, value);
}
} } // namespace Poco::CppParser