Package org.apache.velocity.runtime.parser.node

Class ASTStringLiteral

java.lang.Object

org.apache.velocity.runtime.parser.node.SimpleNode

org.apache.velocity.runtime.parser.node.ASTStringLiteral

All Implemented Interfaces:

Node, Renderable

public class ASTStringLiteral
extends SimpleNode

ASTStringLiteral support. Will interpolate!

Version:

$Id$

Field Summary

Fields

Modifier and Type	Field	Description
private String	image
private boolean	interpolate
private SimpleNode	nodeTree

Fields inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

children, column, first, firstImage, id, info, invalid, last, lastImage, line, literal, log, parent, parser, rsvc, state, template

Constructor Summary

Constructors

Constructor	Description
ASTStringLiteral(int id)
ASTStringLiteral(Parser p, int id)

Method Summary

Modifier and Type	Method	Description
void	adjTokenLineNums(Node node)	Adjust all the line and column numbers that comprise a node so that they are corrected for the string literals position within the template file.
boolean	evaluate(InternalContextAdapter context)
Object	init(InternalContextAdapter context, Object data)	init : we don't have to do much.
boolean	isConstant()	Check to see if this is an interpolated string.
Object	jjtAccept(ParserVisitor visitor, Object data)
private String	replaceQuotes(String s, char literalQuoteChar)	Replaces double double-quotes with a single double quote ("" to ").
static String	unescape(String string)
Object	value(InternalContextAdapter context)	renders the value of the string literal If the properties allow, and the string literal contains a $ or a # the literal is rendered against the context Otherwise, the stringlit is returned.

Methods inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

childrenAccept, cleanupParserAndTokens, dump, dump, dump, execute, getColumn, getFirstToken, getFirstTokenImage, getInfo, getLastToken, getLastTokenImage, getLine, getLocation, getParser, getRuntimeServices, getTemplate, getTemplateName, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, saveTokenImages, setFirstToken, setInfo, setInvalid, toString, toString

Methods inherited from class java.lang.Object

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

Field Details

interpolate

private boolean interpolate

nodeTree

private SimpleNode nodeTree

image

private String image

Constructor Details

ASTStringLiteral

public ASTStringLiteral(int id)

Parameters:

id -

ASTStringLiteral

public ASTStringLiteral(Parser p,
 int id)

Parameters:

p -

id -

Method Details

init

public Object init(InternalContextAdapter context,
 Object data)
            throws TemplateInitException

init : we don't have to do much. Init the tree (there shouldn't be one) and then see if interpolation is turned on.

Specified by:

init in interface Node

Overrides:

init in class SimpleNode

Parameters:

context -

data -

Returns:

Init result.

Throws:

TemplateInitException

See Also:

• Node.init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)

adjTokenLineNums

public void adjTokenLineNums(Node node)

Adjust all the line and column numbers that comprise a node so that they are corrected for the string literals position within the template file. This is necessary if an exception is thrown while processing the node so that the line and column position reported reflects the error position within the template and not just relative to the error position within the string literal.

Parameters:

node -

replaceQuotes

private String replaceQuotes(String s,
 char literalQuoteChar)

Replaces double double-quotes with a single double quote ("" to "). Replaces double single quotes with a single quote ('' to ').

Parameters:

s - StringLiteral without the surrounding quotes

literalQuoteChar - char that starts the StringLiteral (" or ')

unescape

public static String unescape(String string)

Parameters:

string -

Returns:

unescaped string

Since:

1.6

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
 Object data)

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class SimpleNode

Parameters:

visitor -

data -

Returns:

rendered object

See Also:

• SimpleNode.jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object)

isConstant

public boolean isConstant()

Check to see if this is an interpolated string.

Returns:

true if this is constant (not an interpolated string)

Since:

1.6

value

public Object value(InternalContextAdapter context)

renders the value of the string literal If the properties allow, and the string literal contains a $ or a # the literal is rendered against the context Otherwise, the stringlit is returned.

Specified by:

value in interface Node

Overrides:

value in class SimpleNode

Parameters:

context -

Returns:

result of the rendering.

See Also:

• Node.value(org.apache.velocity.context.InternalContextAdapter)

evaluate

public boolean evaluate(InternalContextAdapter context)

Specified by:

evaluate in interface Node

Overrides:

evaluate in class SimpleNode

Parameters:

context -

Returns:

The evaluation result.

See Also:

• SimpleNode.evaluate(org.apache.velocity.context.InternalContextAdapter)