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gnu.xml.xpath

Class XPathParser

public class XPathParser
extends java.lang.Object
An XPath 1.0 parser.

Nested Class Summary

static class
XPathParser.yyException
thrown for irrecoverable syntax errors and stack overflow.
static interface
XPathParser.yyInput
must be implemented by a scanner object to supply input to the parser.
protected static class
XPathParser.YyCheckClass
protected static class
XPathParser.YyDefRedClass
protected static class
XPathParser.YyDgotoClass
protected static class
XPathParser.YyGindexClass
protected static class
XPathParser.YyLenClass
protected static class
XPathParser.YyLhsClass
protected static class
XPathParser.YyNameClass
protected static class
XPathParser.YyRindexClass
protected static class
XPathParser.YySindexClass
protected static class
XPathParser.YyTableClass

Field Summary

static int
ANCESTOR
static int
ANCESTOR_OR_SELF
static int
AND
static int
AT
static int
ATTRIBUTE
static int
CHILD
static int
COLON
static int
COMMA
static int
COMMENT
static int
DESCENDANT
static int
DESCENDANT_OR_SELF
static int
DIGITS
static int
DIV
static int
DOLLAR
static int
DOT
static int
DOUBLE_COLON
static int
DOUBLE_DOT
static int
DOUBLE_SLASH
static int
EQ
static int
FOLLOWING
static int
FOLLOWING_SIBLING
static int
GT
static int
GTE
static int
LB
static int
LITERAL
static int
LP
static int
LT
static int
LTE
static int
MINUS
static int
MOD
static int
NAME
static int
NAMESPACE
static int
NE
static int
NODE
static int
OR
static int
PARENT
static int
PIPE
static int
PLUS
static int
PRECEDING
static int
PRECEDING_SIBLING
static int
PROCESSING_INSTRUCTION
static int
RB
static int
RP
static int
SELF
static int
SLASH
static int
STAR
static int
TEXT
static int
UNARY
static int
yyErrorCode
protected static int
yyFinal
debugging support, requires the package jay.yydebug.
protected int
yyMax
initial size and increment of the state/value stack [default 256].

Method Summary

protected Object
yyDefault(Object first)
executed at the beginning of a reduce action.
protected String[]
yyExpecting(int state)
computes list of expected tokens on error by tracing the tables.
void
yyerror(String message)
simplified error message.
void
yyerror(String message, String[] expected)
(syntax) error message.
Object
yyparse(XPathParser.yyInput yyLex)
the generated parser.
Object
yyparse(XPathParser.yyInput yyLex, Object yydebug)
the generated parser, with debugging messages.

Field Details

ANCESTOR

public static final int ANCESTOR

Field Value:
283

ANCESTOR_OR_SELF

public static final int ANCESTOR_OR_SELF

Field Value:
284

AND

public static final int AND

Field Value:
299

AT

public static final int AT

Field Value:
276

ATTRIBUTE

public static final int ATTRIBUTE

Field Value:
285

CHILD

public static final int CHILD

Field Value:
286

COLON

public static final int COLON

Field Value:
279

COMMA

public static final int COMMA

Field Value:
264

COMMENT

public static final int COMMENT

Field Value:
300

DESCENDANT

public static final int DESCENDANT

Field Value:
287

DESCENDANT_OR_SELF

public static final int DESCENDANT_OR_SELF

Field Value:
288

DIGITS

public static final int DIGITS

Field Value:
258

DIV

public static final int DIV

Field Value:
296

DOLLAR

public static final int DOLLAR

Field Value:
278

DOT

public static final int DOT

Field Value:
281

DOUBLE_COLON

public static final int DOUBLE_COLON

Field Value:
280

DOUBLE_DOT

public static final int DOUBLE_DOT

Field Value:
282

DOUBLE_SLASH

public static final int DOUBLE_SLASH

Field Value:
267

EQ

public static final int EQ

Field Value:
268

FOLLOWING

public static final int FOLLOWING

Field Value:
289

FOLLOWING_SIBLING

public static final int FOLLOWING_SIBLING

Field Value:
290

GT

public static final int GT

Field Value:
270

GTE

public static final int GTE

Field Value:
272

LB

public static final int LB

Field Value:
262

LITERAL

public static final int LITERAL

Field Value:
257

LP

public static final int LP

Field Value:
260

LT

public static final int LT

Field Value:
271

LTE

public static final int LTE

Field Value:
273

MINUS

public static final int MINUS

Field Value:
275

MOD

public static final int MOD

Field Value:
297

NAME

public static final int NAME

Field Value:
259

NAMESPACE

public static final int NAMESPACE

Field Value:
291

NE

public static final int NE

Field Value:
269

NODE

public static final int NODE

Field Value:
303

OR

public static final int OR

Field Value:
298

PARENT

public static final int PARENT

Field Value:
292

PIPE

public static final int PIPE

Field Value:
265

PLUS

public static final int PLUS

Field Value:
274

PRECEDING

public static final int PRECEDING

Field Value:
293

PRECEDING_SIBLING

public static final int PRECEDING_SIBLING

Field Value:
294

PROCESSING_INSTRUCTION

public static final int PROCESSING_INSTRUCTION

Field Value:
301

RB

public static final int RB

Field Value:
263

RP

public static final int RP

Field Value:
261

SELF

public static final int SELF

Field Value:
295

SLASH

public static final int SLASH

Field Value:
266

STAR

public static final int STAR

Field Value:
277

TEXT

public static final int TEXT

Field Value:
302

UNARY

public static final int UNARY

Field Value:
304

yyErrorCode

public static final int yyErrorCode

Field Value:
256

yyFinal

protected static final int yyFinal
debugging support, requires the package jay.yydebug. Set to null to suppress debugging messages.

Field Value:
30

yyMax

protected int yyMax
initial size and increment of the state/value stack [default 256]. This is not final so that it can be overwritten outside of invocations of yyparse().

Method Details

yyDefault

protected Object yyDefault(Object first)
executed at the beginning of a reduce action. Used as $$ = yyDefault($1), prior to the user-specified action, if any. Can be overwritten to provide deep copy, etc.

Parameters:
first - value for $1, or null.

Returns:
first.

yyExpecting

protected String[] yyExpecting(int state)
computes list of expected tokens on error by tracing the tables.

Parameters:
state - for which to compute the list.

Returns:
list of token names.

yyerror

public void yyerror(String message)
simplified error message.

See Also:
yyerror

yyerror

public void yyerror(String message,
                    String[] expected)
(syntax) error message. Can be overwritten to control message format.

Parameters:
message - text to be displayed.
expected - vector of acceptable tokens, if available.

yyparse

public Object yyparse(XPathParser.yyInput yyLex)
            throws java.io.IOException,
                   XPathParser.yyException
the generated parser. Maintains a state and a value stack, currently with fixed maximum size.

Parameters:
yyLex - scanner.

Returns:
result of the last reduction, if any.

Throws:
XPathParser.yyException - on irrecoverable parse error.

yyparse

public Object yyparse(XPathParser.yyInput yyLex,
                      Object yydebug)
            throws java.io.IOException,
                   XPathParser.yyException
the generated parser, with debugging messages. Maintains a state and a value stack, currently with fixed maximum size.

Parameters:
yyLex - scanner.
yydebug - debug message writer implementing yyDebug, or null.

Returns:
result of the last reduction, if any.

Throws:
XPathParser.yyException - on irrecoverable parse error.

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