org.apache.velocity.runtime.parser

Class ParserTokenManager

java.lang.Object

org.apache.velocity.runtime.parser.ParserTokenManager

All Implemented Interfaces:

ParserConstants

public class ParserTokenManager
extends Object
implements ParserConstants

Token Manager.

Field Summary

Fields

Modifier and Type	Field and Description
protected char	curChar
PrintStream	debugStream Debug output.
protected CharStream	input_stream
boolean	inSet
static int[]	jjnewLexState Lex State array.
static String[]	jjstrLiteralImages Token literal values.
static String[]	lexStateNames Lexer state names.
Parser	parser The parser.

Fields inherited from interface org.apache.velocity.runtime.parser.ParserConstants

ALPHA_CHAR, ALT_VAL, BEFORE_EOF, BRACKETED_WORD, COLON, COMMA, DEFAULT, DIGIT, DIRECTIVE, DIRECTIVE_CHAR, DIRECTIVE_TERMINATOR, DIVIDE, DOLLAR, DOLLARBANG, DOT, DOUBLE_ESCAPE, DOUBLEDOT, ELSE, ELSEIF, EMPTY_INDEX, END, EOF, EQUALS, ESCAPE, ESCAPE_DIRECTIVE, EXPONENT, FALSE, FLOATING_POINT_LITERAL, FORMAL_COMMENT, HASH, IDENTIFIER, IDENTIFIER_CHAR, IF_DIRECTIVE, IN_FORMAL_COMMENT, IN_MULTI_LINE_COMMENT, IN_MULTILINE_COMMENT, IN_SINGLE_LINE_COMMENT, IN_TEXTBLOCK, INDEX_LBRACKET, INDEX_RBRACKET, INLINE_TEXT, INTEGER_LITERAL, LBRACKET, LCURLY, LEFT_CURLEY, LETTER, LOGICAL_AND, LOGICAL_EQUALS, LOGICAL_GE, LOGICAL_GT, LOGICAL_LE, LOGICAL_LT, LOGICAL_NOT, LOGICAL_NOT_EQUALS, LOGICAL_OR, LOGICAL_OR_2, LONE_SYMBOL, LPAREN, MINUS, MODULUS, MULTI_LINE_COMMENT, MULTIPLY, NEWLINE, OLD_ALPHA_CHAR, OLD_IDENTIFIER, OLD_IDENTIFIER_CHAR, PIPE, PLUS, PRE_DIRECTIVE, PRE_OLD_REFERENCE, PRE_REFERENCE, RBRACKET, RCURLY, REFERENCE, REFERENCE_TERMINATOR, REFINDEX, REFMOD, REFMOD2, REFMOD2_RPAREN, REFMOD3, REFMODIFIER, RIGHT_CURLEY, RPAREN, SET_DIRECTIVE, SINGLE_LINE_COMMENT, SINGLE_LINE_COMMENT_START, STRING_LITERAL, SUFFIX, TEXT, TEXTBLOCK, tokenImage, TRUE, WHITESPACE, WORD

Constructor Summary

Constructors

Constructor and Description
ParserTokenManager(Parser parserArg, CharStream stream) Constructor with parser.
ParserTokenManager(Parser parserArg, CharStream stream, int lexState) Constructor with parser.

Method Summary

Modifier and Type	Method and Description
void	clearStateVars() Clears all state variables, resets to start values, clears stateStack.
Token	getNextToken() Get the next Token.
protected Token	jjFillToken()
void	ReInit(CharStream stream) Reinitialise parser.
void	ReInit(CharStream stream, int lexState) Reinitialise parser.
void	setDebugStream(PrintStream ds) Set debug output.
boolean	stateStackPop() pops a state off the stack, and restores paren counts
boolean	stateStackPush() pushes the current state onto the 'state stack', and maintains the parens counts public because we need it in PD & VM handling
void	switchTo(int lexState) Switches to a new state (add some log to the default method)
void	SwitchTo(int lexState) Switch to specified lex state.
static void	trace(String message) Our own trace method.

Methods inherited from class java.lang.Object

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

Field Detail

inSet

public boolean inSet

debugStream

public PrintStream debugStream

Debug output.

parser

public Parser parser

The parser.

jjstrLiteralImages

public static final String[] jjstrLiteralImages

Token literal values.

lexStateNames

public static final String[] lexStateNames

Lexer state names.

jjnewLexState

public static final int[] jjnewLexState

Lex State array.

input_stream

protected CharStream input_stream

curChar

protected char curChar

Constructor Detail

ParserTokenManager

public ParserTokenManager(Parser parserArg,
                          CharStream stream)

Constructor with parser.

ParserTokenManager

public ParserTokenManager(Parser parserArg,
                          CharStream stream,
                          int lexState)

Constructor with parser.

Method Detail

trace

public static void trace(String message)

Our own trace method. Use sparsingly in production, since each and every call will introduce an execution branch and slow down parsing.

switchTo

public void switchTo(int lexState)

Switches to a new state (add some log to the default method)

stateStackPop

public boolean stateStackPop()

pops a state off the stack, and restores paren counts

Returns:

boolean : success of operation

stateStackPush

public boolean stateStackPush()

pushes the current state onto the 'state stack', and maintains the parens counts public because we need it in PD & VM handling

Returns:

boolean : success. It can fail if the state machine gets messed up (do don't mess it up :)

clearStateVars

public void clearStateVars()

Clears all state variables, resets to start values, clears stateStack. Call before parsing.

setDebugStream

public void setDebugStream(PrintStream ds)

Set debug output.

ReInit

public void ReInit(CharStream stream)

Reinitialise parser.

ReInit

public void ReInit(CharStream stream,
                   int lexState)

Reinitialise parser.

SwitchTo

public void SwitchTo(int lexState)

Switch to specified lex state.

jjFillToken

protected Token jjFillToken()

getNextToken

public Token getNextToken()

Get the next Token.