Package org.codehaus.groovy.ast.expr

Class ConstantExpression

java.lang.Object

org.codehaus.groovy.ast.ASTNode

org.codehaus.groovy.ast.AnnotatedNode

org.codehaus.groovy.ast.expr.Expression

org.codehaus.groovy.ast.expr.ConstantExpression

All Implemented Interfaces:

GroovydocHolder<AnnotatedNode>, NodeMetaDataHandler

Direct Known Subclasses:

AnnotationConstantExpression

public class ConstantExpression
extends Expression

Represents a constant expression such as null, true, false.

Field Summary

Fields

Modifier and Type	Field	Description
static final ConstantExpression	EMPTY_EXPRESSION
static final ConstantExpression	EMPTY_STRING
static final ConstantExpression	FALSE
static final ConstantExpression	NULL
static final ConstantExpression	PRIM_FALSE
static final ConstantExpression	PRIM_TRUE
static final ConstantExpression	TRUE
static final ConstantExpression	VOID

Fields inherited from class org.codehaus.groovy.ast.expr.Expression

EMPTY_ARRAY

Fields inherited from interface groovy.lang.groovydoc.GroovydocHolder

DOC_COMMENT

Constructor Summary

Constructors

Constructor	Description
ConstantExpression(Object value)
ConstantExpression(Object value, boolean keepPrimitive)

Method Summary

Modifier and Type	Method	Description
String	getConstantName()
String	getText()
Object	getValue()
boolean	isEmptyStringExpression()
boolean	isFalseExpression()
boolean	isNullExpression()
boolean	isTrueExpression()
void	setConstantName(String constantName)
String	toString()
Expression	transformExpression(ExpressionTransformer transformer)	Transforms this expression and any nested expressions.
void	visit(GroovyCodeVisitor visitor)

Methods inherited from class org.codehaus.groovy.ast.expr.Expression

getType, setType, transformExpressions, transformExpressions

Methods inherited from class org.codehaus.groovy.ast.AnnotatedNode

addAnnotation, addAnnotation, addAnnotations, getAnnotations, getAnnotations, getDeclaringClass, getGroovydoc, getInstance, hasNoRealSourcePosition, isSynthetic, setDeclaringClass, setHasNoRealSourcePosition, setSynthetic

Methods inherited from class org.codehaus.groovy.ast.ASTNode

copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.codehaus.groovy.ast.NodeMetaDataHandler

copyNodeMetaData, getNodeMetaData, getNodeMetaData, getNodeMetaData, newMetaDataMap, putNodeMetaData, removeNodeMetaData, setNodeMetaData

Field Details

NULL

public static final ConstantExpression NULL

TRUE

public static final ConstantExpression TRUE

FALSE

public static final ConstantExpression FALSE

EMPTY_STRING

public static final ConstantExpression EMPTY_STRING

PRIM_TRUE

public static final ConstantExpression PRIM_TRUE

PRIM_FALSE

public static final ConstantExpression PRIM_FALSE

VOID

public static final ConstantExpression VOID

EMPTY_EXPRESSION

public static final ConstantExpression EMPTY_EXPRESSION

Constructor Details

ConstantExpression

public ConstantExpression(Object value)

ConstantExpression

public ConstantExpression(Object value,
 boolean keepPrimitive)

Method Details

toString

public String toString()

Overrides:

toString in class Object

visit

public void visit(GroovyCodeVisitor visitor)

Overrides:

visit in class ASTNode

transformExpression

public Expression transformExpression(ExpressionTransformer transformer)

Description copied from class: Expression

Transforms this expression and any nested expressions.

Specified by:

transformExpression in class Expression

getValue

public Object getValue()

Returns:

the value of this constant expression

getText

public String getText()

Overrides:

getText in class ASTNode

getConstantName

public String getConstantName()

setConstantName

public void setConstantName(String constantName)

isNullExpression

public boolean isNullExpression()

isTrueExpression

public boolean isTrueExpression()

isFalseExpression

public boolean isFalseExpression()

isEmptyStringExpression

public boolean isEmptyStringExpression()