- org.codehaus.groovy.ast.expr.ElvisOperatorExpression
-
public class ElvisOperatorExpression
extends TernaryExpression
Represents a short ternary expression x ?: y, which is equal
to
def truePart = x
def booleanPart = truePart as boolean
booleanPart? truePart : y
Even if x is no atomic expression, x will be evaluated only
once. Example:
class Foo {
def index=0
def getX(){ index++; return index }
}
def foo = new Foo()
def result = foo.x ?: "false case"
assert foo.index == 1
assert result == 1
- Since:
- 1.5
-
-
Methods Summary
-
Inherited Methods Summary
Inherited Methods
| Methods inherited from class |
Name |
class TernaryExpression |
getBooleanExpression, getFalseExpression, getText, getTrueExpression, getType, toString, transformExpression, visit |
class Expression |
getType, setType, transformExpression, transformExpressions, transformExpressions |
class AnnotatedNode |
addAnnotation, addAnnotations, getAnnotations, getAnnotations, getDeclaringClass, getGroovydoc, getInstance, hasNoRealSourcePosition, isSynthetic, setDeclaringClass, setHasNoRealSourcePosition, setSynthetic |
class ASTNode |
copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, getText, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition, visit |
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