[Java] Class ElvisOperatorExpression
- 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 : yEven 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
| Fields inherited from class | Fields |
|---|---|
class Expression | EMPTY_ARRAY |
Constructor Summary
| Constructor and description |
|---|
ElvisOperatorExpression
(Expression base, Expression falseExpression) |
Methods Summary
| Type Params | Return Type | Name and description |
|---|---|---|
public Expression |
transformExpression(ExpressionTransformer transformer) | |
public void |
visit(GroovyCodeVisitor visitor) |
Inherited Methods Summary
| 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 |
Constructor Detail
public ElvisOperatorExpression(Expression base, Expression falseExpression)
Method Detail
public Expression transformExpression(ExpressionTransformer transformer)
public void visit(GroovyCodeVisitor visitor)
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Licensed under the Apache license.
https://docs.groovy-lang.org/3.0.7/html/gapi/org/codehaus/groovy/ast/expr/ElvisOperatorExpression.html