C++ ParserException函数代码示例

Node* Parser::StructDeclaration() {
	Symbol *type = TypeSpec();

	if(type != NULL) {
		Node *decl = StructDeclaratorList(type);
		
		if(oper == SEMICOLON)
			Next();
		else
			throw ParserException(currentToken, "Struct declaration without ';'");

		return decl;
	}
	return NULL;
}

QString Parser::Private::blockingReadElementText()
{
    //analogous to QXmlStreamReader::readElementText(), but blocking. readElementText() doesn't recover from PrematureEndOfData,
    //but always returns a null string if isStartElement() is false (which is the case if it already parts of the text)
    //affects at least Qt <= 4.7.1. Reported as QTBUG-14661.

    if (!reader.isStartElement())
        throw ParserException(QCoreApplication::translate("Valgrind::XmlProtocol::Parser",
                                                          "trying to read element text although current position is not start of element"));

    QString result;

    forever {
        const QXmlStreamReader::TokenType type = blockingReadNext();
        switch (type) {
        case QXmlStreamReader::Characters:
        case QXmlStreamReader::EntityReference:
            result += reader.text();
            break;
        case QXmlStreamReader::EndElement:
            return result;
        case QXmlStreamReader::ProcessingInstruction:
        case QXmlStreamReader::Comment:
            break;
        case QXmlStreamReader::StartElement:
            throw ParserException(QCoreApplication::translate("Valgrind::XmlProtocol::Parser",
                                                              "Unexpected child element while reading element text"));
        default:
            //TODO handle
            throw ParserException(QCoreApplication::translate("Valgrind::XmlProtocol::Parser",
                                                              "Unexpected token type %1").arg(type));
            break;
        }
    }
    return QString();
}

Repeat Repeat::parse(const core::WithPos<core::GenericProperty> &generic)
{
    if (!generic->getParameters().empty()) {
        throw ParserException(generic.pos(), "The " + NAME + " property must have no parameters!");
    }

    auto &value = generic->getValue();
    return Repeat {
        /* NOTE: the spec doesn't specify that the value should be non-negative,
         * so it is not checked (even though a negative value doesn't seem
         * to make sense here) */
        core::ValueParser::parseInteger(
                    value.pos(), value->begin(), value->end())
    };
}

void Parse_SyntaxExpressionAction(Context& ctx)
{
    if (ctx.Token() == TKLeftCurlyBracketCharacter)
    {
        //SyntaxExpressionAction => LeftCurlyBracketCharacter Identifier RightCurlyBracketCharacter
        ctx.Match(TKLeftCurlyBracketCharacter);
        ctx.Match(TKIdentifier);
        ctx.Action_PrintAction();
        ctx.Match(TKRightCurlyBracketCharacter);
    }
    else
    {
        throw ParserException(ctx.GetLine(), ctx.GetCol(), ErrorCodeUnexpectedToken);
    }
}

Node* Parser::CompoundStmt() {
	if(oper == FIGURE_LEFT_BRACKET) {
		Next();
		Node *decl = DeclarationList();
		Node *stmt = StatementList();

		if(oper != FIGURE_RIGHT_BRACKET)
			throw ParserException(currentToken, "Compound statement without '}'");
		else
			Next();
		
		return new NodeStmt("{stmt}", decl, stmt);
	}
	return NULL;
}

 Type
 get_type(const Token tok)
 {
     switch(tok)
     {
     case Token::StringType:
         return Type::String;
     case Token::FloatingType:
         return Type::Floating;
     case Token::IntegerType:
         return Type::Integer;
     default:
         throw ParserException(ParserExceptionType::Unknown);
     }
 }

    PktPacket::PktPacket(const GTTPacket& gttpkt) {
        std::map<std::string, std::string>::const_iterator it;

        // Check protocol
        if (gttpkt.protocol.compare("MESH")) {
            log::error << "RReply: Invalid GTT protocol "
                << gttpkt.protocol << log::endl;
            throw ParserException("RReplyPacket", "Invalid GTT packet");
        }
        if (gttpkt.method.compare("PKT")) {
            log::error << "RReply: Invalid GTT method "
                << gttpkt.method << log::endl;
            throw ParserException("RReplyPacket", "Invalid GTT packet");
        }

        // Parse headers
        for (it = gttpkt.headers.begin(); it != gttpkt.headers.end(); it++) {
            if (boost::iequals(it->first, "Source")) {
                source = Address(it->second);
            } else if (boost::iequals(it->first, "Destination")) {
                destination = Address(it->second);
            } else if (boost::iequals(it->first, "NextHop")) {
                nexthop = Address(it->second);
            } else if (boost::iequals(it->first, "Seq")) {
                seq = String::toInt(it->second);
            } else {
                log::error << "RReply: Unknown header "
                    << it->first << log::endl;
                throw ParserException("PktPacket", "Invalid GTT header");
            }
        }

        // Copy data
        size = gttpkt.size;
        data = gttpkt.body;
    }

 void Parser::ParseVarSymbols(sptr<SymTable> table, bool is_record)
 {
     table = table ? table : currSymTable;
     do
     {
         if (Match(PROCEDURE, FUNCTION))
         {
             if (is_record) throw ParserException("functions is not allowed in records");
             ParseFunc();
         }
         else
         {
             ParseVarList(table);
         }
     } while (MatchSkip(SEMICOLON, -1));
 }

Node* Parser::ExpressionStmt() {
	Node *link = Expression();

	if(oper == SEMICOLON) {
		Next();
		if(link == NULL)
			return new NodeStmt("(stmt)", NULL, NULL);

		return new NodeSafeStmt(link);
	}
	else 
		if(link != NULL)
			throw ParserException(currentToken, "Expression without ';'");

	return NULL;
}

int Parser::Private::parseErrorKind(const QString &kind)
{
    switch (tool) {
    case Memcheck:
        return parseMemcheckErrorKind(kind);
    case Ptrcheck:
        return parsePtrcheckErrorKind(kind);
    case Helgrind:
        return parseHelgrindErrorKind(kind);
    case Unknown:
    default:
        break;
    }
    throw ParserException(QCoreApplication::translate("Valgrind::XmlProtocol::Parser",
                                                      "Could not parse error kind, tool not yet set."));
}

void Parse_InterleaveDeclaration(Context& ctx)
{
    if (ctx.Token() == TKKeywordInterleave)
    {
        //InterleaveDeclaration => KeywordInterleave Identifier EqualsCharacter TokenExpression SemicolonCharacter
        ctx.Match(TKKeywordInterleave);
        ctx.Match(TKIdentifier);
        ctx.Match(TKEqualsCharacter);
        Parse_TokenExpression(ctx);
        ctx.Match(TKSemicolonCharacter);
    }
    else
    {
        throw ParserException(ctx.GetLine(), ctx.GetCol(), ErrorCodeUnexpectedToken);
    }
}

void Parse_LanguageBody(Context& ctx)
{
    if (ctx.Token() == TKKeywordLanguage)
    {
        //LanguageBody => KeywordLanguage Identifier LeftCurlyBracketCharacter Declarations RightCurlyBracketCharacter
        ctx.Match(TKKeywordLanguage);
        ctx.Match(TKIdentifier);
        ctx.Action_LanguageName();
        ctx.Match(TKLeftCurlyBracketCharacter);
        Parse_Declarations(ctx);
        ctx.Match(TKRightCurlyBracketCharacter);
    }
    else
    {
        throw ParserException(ctx.GetLine(), ctx.GetCol(), ErrorCodeUnexpectedToken);
    }
}

Node* Parser::InitDeclaratorList(Symbol *type) {
	Node *first = InitDeclarator(type);

	if(oper == COMMA) {
		Next();
		Node *second = InitDeclaratorList(type);

		if(second == NULL)
			throw ParserException(currentToken, "Expected expression after ','");

		return new NodeSafeStmt(first, second);
	}
	if(first != NULL)
		return new NodeSafeStmt(first);

	return NULL;
}

void Parse_F(Context& ctx)
{
    if (ctx.Token() == TKKeywordAny ||
            ctx.Token() == TKLiteralChar ||
            ctx.Token() == TKIdentifier ||
            ctx.Token() == TKLeftParenthesisCharacter ||
            ctx.Token() == TKStringLiteral)
    {
        //F => P OptOperator
        Parse_P(ctx);
        Parse_OptOperator(ctx);
    }
    else
    {
        throw ParserException(ctx.GetLine(), ctx.GetCol(), ErrorCodeUnexpectedToken);
    }
}

void Parse_T(Context& ctx)
{
    if (ctx.Token() == TKKeywordAny ||
            ctx.Token() == TKLiteralChar ||
            ctx.Token() == TKIdentifier ||
            ctx.Token() == TKLeftParenthesisCharacter ||
            ctx.Token() == TKStringLiteral)
    {
        //T => F ZeroOrMoreOrF
        Parse_F(ctx);
        Parse_ZeroOrMoreOrF(ctx);
    }
    else
    {
        throw ParserException(ctx.GetLine(), ctx.GetCol(), ErrorCodeUnexpectedToken);
    }
}