jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler

Class XPathParser

java.lang.Object

jdk7u.jaxp.java_cup.external.runtime.lr_parser

jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.XPathParser

public class XPathParser
extends lr_parser

CUP v0.10j generated parser.

Field Summary

Fields

Modifier and Type	Field and Description
protected static short[][]	_action_table Parse-action table.
protected static short[][]	_production_table Production table.
protected static short[][]	_reduce_table reduce_goto table.
jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.SymbolTable	_symbolTable Reference to the symbol table.
protected jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.CUP$XPathParser$actions	action_obj Instance of action encapsulation class.
static jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.VariableRef	DummyVarRef Reference to non-existing variable.
static Vector	EmptyArgs Used by function calls with no args.

Fields inherited from class jdk7u.jaxp.java_cup.external.runtime.lr_parser

_done_parsing, _error_sync_size, action_tab, cur_token, lookahead, lookahead_pos, production_tab, reduce_tab, stack, tos

Constructor Summary

Constructors

Constructor and Description
XPathParser() Default constructor.
XPathParser(Parser parser)
XPathParser(Scanner s) Constructor which sets the default scanner.

Method Summary

Methods

Modifier and Type	Method and Description
short[][]	action_table() Access to parse-action table.
void	addError(ErrorMsg error)
jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.StepPattern	createStepPattern(int axis, Object test, Vector predicates) This method is similar to findNodeType(int, Object) except that it creates a StepPattern instead of just returning a node type.
Symbol	do_action(int act_num, lr_parser parser, Stack stack, int top) Invoke a user supplied parse action.
int	EOF_sym() EOF Symbol index.
int	error_sym() error Symbol index.
int	findNodeType(int axis, Object test)
int	getLineNumber()
jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.QName	getQName(String namespace, String prefix, String localname)
jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.QName	getQNameIgnoreDefaultNs(String name)
protected void	init_actions() Action encapsulation object initializer.
jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.RelativeLocationPath	insertStep(jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.Step step, jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.RelativeLocationPath rlp)
boolean	isElementAxis(int axis) Returns true if the axis applies to elements only.
Symbol	parse(String expression, int lineNumber) Parse the expression passed to the current scanner.
short[][]	production_table() Access to production table.
short[][]	reduce_table() Access to reduce_goto table.
void	report_error(String message, Object info) Report a non fatal error (or warning).
void	report_fatal_error(String message, Object info) Report a fatal error.
void	setCallsNodeset(boolean flag)
void	setHasIdCall(boolean flag)
void	setMultiDocument(boolean flag)
int	start_production() Indicates start production.
int	start_state() Indicates start state.

Methods inherited from class jdk7u.jaxp.java_cup.external.runtime.lr_parser

advance_lookahead, cur_err_token, debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, error_recovery, error_sync_size, find_recovery_config, get_action, get_reduce, getScanner, parse_lookahead, parse, read_lookahead, restart_lookahead, scan, setScanner, shift_under_error, syntax_error, try_parse_ahead, unpackFromStrings, unrecovered_syntax_error, user_init

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_production_table

protected static final short[][] _production_table

Production table.

_action_table

protected static final short[][] _action_table

Parse-action table.

_reduce_table

protected static final short[][] _reduce_table

reduce_goto table.

action_obj

protected jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.CUP$XPathParser$actions action_obj

Instance of action encapsulation class.

EmptyArgs

public static final Vector EmptyArgs

Used by function calls with no args.

DummyVarRef

public static final jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.VariableRef DummyVarRef

Reference to non-existing variable.

_symbolTable

public jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.SymbolTable _symbolTable

Reference to the symbol table.

Constructor Detail

XPathParser

public XPathParser()

Default constructor.

XPathParser

public XPathParser(Scanner s)

Constructor which sets the default scanner.

XPathParser

public XPathParser(Parser parser)

Method Detail

production_table

public short[][] production_table()

Access to production table.

Specified by:

production_table in class lr_parser

action_table

public short[][] action_table()

Access to parse-action table.

Specified by:

action_table in class lr_parser

See Also:

lr_parser.get_action(int, int)

reduce_table

public short[][] reduce_table()

Access to reduce_goto table.

Specified by:

reduce_table in class lr_parser

See Also:

lr_parser.get_reduce(int, int)

init_actions

protected void init_actions()

Action encapsulation object initializer.

Specified by:

init_actions in class lr_parser

do_action

public Symbol do_action(int act_num,
               lr_parser parser,
               Stack stack,
               int top)
                 throws Exception

Invoke a user supplied parse action.

Specified by:

do_action in class lr_parser

Parameters:

act_num - the internal index of the action to be performed.

parser - the parser object we are acting for.

stack - the parse stack of that object.

top - the index of the top element of the parse stack.

Throws:

Exception

start_state

public int start_state()

Indicates start state.

Specified by:

start_state in class lr_parser

start_production

public int start_production()

Indicates start production.

Specified by:

start_production in class lr_parser

EOF_sym

public int EOF_sym()

EOF Symbol index.

Specified by:

EOF_sym in class lr_parser

error_sym

public int error_sym()

error Symbol index.

Specified by:

error_sym in class lr_parser

getLineNumber

public int getLineNumber()

getQNameIgnoreDefaultNs

public jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.QName getQNameIgnoreDefaultNs(String name)

getQName

public jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.QName getQName(String namespace,
                                                                 String prefix,
                                                                 String localname)

setMultiDocument

public void setMultiDocument(boolean flag)

setCallsNodeset

public void setCallsNodeset(boolean flag)

setHasIdCall

public void setHasIdCall(boolean flag)

createStepPattern

public jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.StepPattern createStepPattern(int axis,
                                                                                Object test,
                                                                                Vector predicates)

This method is similar to findNodeType(int, Object) except that it creates a StepPattern instead of just returning a node type. It also differs in the way it handles "{uri}:*" and "{uri}:@*". The last two patterns are expanded as "*[namespace-uri() = 'uri']" and "@*[namespace-uri() = 'uri']", respectively. This expansion considerably simplifies the grouping of patterns in the Mode class. For this expansion to be correct, the priority of the pattern/template must be set to -0.25 (when no other predicates are present).

findNodeType

public int findNodeType(int axis,
               Object test)

parse

public Symbol parse(String expression,
           int lineNumber)
             throws Exception

Parse the expression passed to the current scanner. If this expression contains references to local variables and it will be compiled in an external module (not in the main class) request the current template to create a new variable stack frame.

Parameters:

lineNumber - Line where the current expression is defined.

external - Set to true if this expression is compiled in a separate module.

Throws:

Exception

addError

public final void addError(ErrorMsg error)

report_error

public void report_error(String message,
                Object info)

Description copied from class: lr_parser

Report a non fatal error (or warning). This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which simply prints the message to System.err.

Overrides:

report_error in class lr_parser

Parameters:

message - an error message.

info - an extra object reserved for use by specialized subclasses.

report_fatal_error

public void report_fatal_error(String message,
                      Object info)

Description copied from class: lr_parser

Report a fatal error. This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which reports the error then throws an exception.

Overrides:

report_fatal_error in class lr_parser

Parameters:

message - an error message.

info - an extra object reserved for use by specialized subclasses.

insertStep

public jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.RelativeLocationPath insertStep(jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.Step step,
                                                                                  jdk7u.jaxp.org.apache.xalan.external.xsltc.compiler.RelativeLocationPath rlp)

isElementAxis

public boolean isElementAxis(int axis)

Returns true if the axis applies to elements only. The axes child, attribute, namespace, descendant result in non-empty nodesets only if the context node is of type element.