org.python.parser
Class ParseException

java.lang.Object
  extended byjava.lang.Throwable
      extended byjava.lang.Exception
          extended byorg.python.parser.ParseException
All Implemented Interfaces:
Serializable

public class ParseException
extends Exception

This exception is thrown when parse errors are encountered. You can explicitly create objects of this exception type by calling the method generateParseException in the generated parser. You can modify this class to customize your error reporting mechanisms so long as you retain the public fields.

See Also:
Serialized Form

Field Summary
 Token currentToken
          This is the last token that has been consumed successfully.
 int[][] expectedTokenSequences
          Each entry in this array is an array of integers.
 String[] tokenImage
          This is a reference to the "tokenImage" array of the generated parser within which the parse error occurred.
static boolean verboseExceptions
          This method has the standard behavior when this object has been created using the standard constructors.
 
Constructor Summary
ParseException()
          The following constructors are for use by you for whatever purpose you can think of.
ParseException(String message)
           
ParseException(String message, SimpleNode node)
           
ParseException(Token currentTokenVal, int[][] expectedTokenSequencesVal, String[] tokenImageVal)
          This constructor is used by the method "generateParseException" in the generated parser.
 
Method Summary
 String getMessage()
           
 
Methods inherited from class java.lang.Throwable
fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

currentToken

public Token currentToken
This is the last token that has been consumed successfully. If this object has been created due to a parse error, the token followng this token will (therefore) be the first error token.


expectedTokenSequences

public int[][] expectedTokenSequences
Each entry in this array is an array of integers. Each array of integers represents a sequence of tokens (by their ordinal values) that is expected at this point of the parse.


tokenImage

public String[] tokenImage
This is a reference to the "tokenImage" array of the generated parser within which the parse error occurred. This array is defined in the generated ...Constants interface.


verboseExceptions

public static boolean verboseExceptions
This method has the standard behavior when this object has been created using the standard constructors. Otherwise, it uses "currentToken" and "expectedTokenSequences" to generate a parse error message and returns it. If this object has been created due to a parse error, and you do not catch it (it gets thrown from the parser), then this method is called during the printing of the final stack trace, and hence the correct error message gets displayed.

Constructor Detail

ParseException

public ParseException(Token currentTokenVal,
                      int[][] expectedTokenSequencesVal,
                      String[] tokenImageVal)
This constructor is used by the method "generateParseException" in the generated parser. Calling this constructor generates a new object of this type with the fields "currentToken", "expectedTokenSequences", and "tokenImage" set. The boolean flag "specialConstructor" is also set to true to indicate that this constructor was used to create this object. This constructor calls its super class with the empty string to force the "toString" method of parent class "Throwable" to print the error message in the form: ParseException:


ParseException

public ParseException()
The following constructors are for use by you for whatever purpose you can think of. Constructing the exception in this manner makes the exception behave in the normal way - i.e., as documented in the class "Throwable". The fields "errorToken", "expectedTokenSequences", and "tokenImage" do not contain relevant information. The JavaCC generated code does not use these constructors.


ParseException

public ParseException(String message)

ParseException

public ParseException(String message,
                      SimpleNode node)
Method Detail

getMessage

public String getMessage()