public class ParseException
extends java.lang.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.
Modifier and Type | Field and Description |
---|---|
Token |
currentToken
This is the last token that has been consumed successfully.
|
protected java.lang.String |
eol
The end of line string for this machine.
|
int[][] |
expectedTokenSequences
Each entry in this array is an array of integers.
|
protected boolean |
specialConstructor
This variable determines which constructor was used to create
this object and thereby affects the semantics of the
"getMessage" method (see below).
|
java.lang.String[] |
tokenImage
This is a reference to the "tokenImage" array of the generated
parser within which the parse error occurred.
|
Constructor and Description |
---|
ParseException()
The following constructors are for use by you for whatever
purpose you can think of.
|
ParseException(java.lang.String message)
Parameters contructor.
|
ParseException(Token currentTokenVal,
int[][] expectedTokenSequencesVal,
java.lang.String[] tokenImageVal)
This constructor is used by the method "generateParseException"
in the generated parser.
|
Modifier and Type | Method and Description |
---|---|
protected java.lang.String |
add_escapes(java.lang.String str)
Used to convert raw characters to their escaped version
when these raw version cannot be used as part of an ASCII
string literal.
|
java.lang.String |
getMessage()
This method has the standard behavior when this object has been
created using the standard constructors.
|
protected boolean specialConstructor
public Token currentToken
public int[][] expectedTokenSequences
public java.lang.String[] tokenImage
protected java.lang.String eol
public ParseException(Token currentTokenVal, int[][] expectedTokenSequencesVal, java.lang.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: result of getMessage
public ParseException()
public ParseException(java.lang.String message)
message
- message to be display when the exception raises.public java.lang.String getMessage()
getMessage
in class java.lang.Throwable
protected java.lang.String add_escapes(java.lang.String str)