parser/ParserError.h

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All Rights Reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef ParserError_h
  27 #define ParserError_h
  28
  29 #include "Error.h"
  30 #include "ErrorHandlingScope.h"
  31 #include "ExceptionHelpers.h"
  32 #include "ParserTokens.h"
  33 #include <wtf/text/WTFString.h>
  34
  35 namespace JSC {
  36
  37 struct ParserError {
  38     enum SyntaxErrorType {
  39         SyntaxErrorNone,
  40         SyntaxErrorIrrecoverable,
  41         SyntaxErrorUnterminatedLiteral,
  42         SyntaxErrorRecoverable
  43     };
  44
  45     enum ErrorType {
  46         ErrorNone,
  47         StackOverflow,
  48         EvalError,
  49         OutOfMemory,
  50         SyntaxError
  51     };
  52
  53     ErrorType m_type;
  54     SyntaxErrorType m_syntaxErrorType;
  55     JSToken m_token;
  56     String m_message;
  57     int m_line;
  58     ParserError()
  59         : m_type(ErrorNone)
  60         , m_syntaxErrorType(SyntaxErrorNone)
  61         , m_line(-1)
  62     {
  63     }
  64
  65     explicit ParserError(ErrorType type)
  66         : m_type(type)
  67         , m_syntaxErrorType(SyntaxErrorNone)
  68         , m_line(-1)
  69     {
  70     }
  71
  72     ParserError(ErrorType type, SyntaxErrorType syntaxError, JSToken token)
  73         : m_type(type)
  74         , m_syntaxErrorType(syntaxError)
  75         , m_token(token)
  76         , m_line(-1)
  77     {
  78     }
  79
  80     ParserError(ErrorType type, SyntaxErrorType syntaxError, JSToken token, String msg, int line)
  81         : m_type(type)
  82         , m_syntaxErrorType(syntaxError)
  83         , m_token(token)
  84         , m_message(msg)
  85         , m_line(line)
  86     {
  87     }
  88
  89     JSObject* toErrorObject(JSGlobalObject* globalObject, const SourceCode& source)
  90     {
  91         switch (m_type) {
  92         case ErrorNone:
  93             return 0;
  94         case SyntaxError:
  95             return addErrorInfo(globalObject->globalExec(), createSyntaxError(globalObject, m_message), m_line, source);
  96         case EvalError:
  97             return createSyntaxError(globalObject, m_message);
  98         case StackOverflow: {
  99             ErrorHandlingScope errorScope(globalObject->vm());
 100             return createStackOverflowError(globalObject);
 101         }
 102         case OutOfMemory:
 103             return createOutOfMemoryError(globalObject);
 104         }
 105         CRASH();
 106         return createOutOfMemoryError(globalObject); // Appease Qt bot
 107     }
 108 #undef GET_ERROR_CODE
 109 };
 110
 111 } // namespace JSC
 112
 113 #endif // ParserError_h