templates.cpp.ParseException.h.template Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of ph-javacc-maven-plugin Show documentation
Show all versions of ph-javacc-maven-plugin Show documentation
Maven 3 Plugin for processing JavaCC grammar files.
\#ifndef _PARSE_EXCEPTION_H
\#define _PARSE_EXCEPTION_H
\#include "JavaCC.h"
\#include "Token.h"
#if NAMESPACE
namespace ${NAMESPACE_OPEN}
#fi
/**
* 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 fields.
*/
class ParseException {
public:
/**
* 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.
*/
ParseException(Token currentTokenVal,
int** expectedTokenSequencesVal,
JAVACC_STRING_TYPE* tokenImageVal
);
/**
* 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();
/** Constructor with message. */
ParseException(JAVACC_STRING_TYPE message);
/**
* 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.
*/
Token currentToken;
/**
* 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.
*/
int** expectedTokenSequences;
/**
* 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 class.
*/
JAVACC_STRING_TYPE* tokenImage;
/**
* 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) the correct error message
* gets displayed.
*/
private: JAVACC_STRING_TYPE initialise(Token currentToken,
int** expectedTokenSequences,
JAVACC_STRING_TYPE* tokenImage);
/**
* The end of line string for this machine.
*/
\#define eol "\n"
/**
* Used to convert raw characters to their escaped version
* when these raw version cannot be used as part of an ASCII
* string literal.
*/
JAVACC_STRING_TYPE add_escapes(JAVACC_STRING_TYPE str);
};
#if NAMESPACE
${NAMESPACE_CLOSE}
#fi
\#endif