net.sourceforge.pmd.lang.java.ast.ASTConditionalExpression Maven / Gradle / Ivy
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/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.java.ast;
/**
* Represents a conditional expression, aka ternary expression.
*
*
*
* ConditionalExpression ::= {@linkplain ASTExpression Expression} "?" {@linkplain ASTExpression Expression} ":" {@linkplain ASTExpression Expression}
*
*
*/
public final class ASTConditionalExpression extends AbstractJavaExpr {
private boolean isStandalone;
ASTConditionalExpression(int id) {
super(id);
}
/**
* Returns the node that represents the guard of this conditional.
* That is the expression before the '?'.
*/
public ASTExpression getCondition() {
return (ASTExpression) getChild(0);
}
/**
* Returns the node that represents the expression that will be evaluated
* if the guard evaluates to true.
*/
public ASTExpression getThenBranch() {
return (ASTExpression) getChild(1);
}
/**
* Returns the node that represents the expression that will be evaluated
* if the guard evaluates to false.
*/
public ASTExpression getElseBranch() {
return (ASTExpression) getChild(2);
}
@Override
public R acceptVisitor(JavaVisitor visitor, P data) {
return visitor.visit(this, data);
}
/**
* Note: this method is not used at all in pre-Java 8 analysis,
* because standalone/poly exprs weren't formalized before java 8.
* Calling this method then is undefined.
*/
// very internal
boolean isStandalone() {
assert getLanguageVersion().compareToVersion("8") >= 0
: "This method's result is undefined in pre java 8 code";
return this.isStandalone;
}
void setStandaloneTernary() {
this.isStandalone = true;
}
}