org.sonar.java.model

Class ExpressionUtils

java.lang.Object

org.sonar.java.model.ExpressionUtils

public final class ExpressionUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static IdentifierTree	extractIdentifier(AssignmentExpressionTree tree)
static boolean	isNullLiteral(ExpressionTree tree)
static boolean	isSelectOnThisOrSuper(AssignmentExpressionTree tree) Checks of is the given tree is a MemberSelectExpressionTree which is selecting with this or super
static boolean	isSelectOnThisOrSuper(MemberSelectExpressionTree tree) Checks of is the given tree is selecting with this or super
static boolean	isSimpleAssignment(AssignmentExpressionTree tree) In case of simple assignments, only the expression is evaluated, as we only use the reference to the variable to store the result.
static ExpressionTree	skipParentheses(ExpressionTree tree)

Methods inherited from class java.lang.Object

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

Method Detail

isSimpleAssignment

public static boolean isSimpleAssignment(AssignmentExpressionTree tree)

In case of simple assignments, only the expression is evaluated, as we only use the reference to the variable to store the result. For SE-Based checks, only a single value should be unstacked if its the case. For other cases, two values should be unstacked. See JLS8-15.26

Parameters:

tree - The assignment tree

Returns:

true if the tree is a simple assignment

See Also:

extractIdentifier(AssignmentExpressionTree)

isSelectOnThisOrSuper

public static boolean isSelectOnThisOrSuper(AssignmentExpressionTree tree)

Checks of is the given tree is a MemberSelectExpressionTree which is selecting with this or super

Parameters:

tree - The tree to check.

Returns:

true when the tree is a select on this or super

See Also:

isSelectOnThisOrSuper(MemberSelectExpressionTree)

isSelectOnThisOrSuper

public static boolean isSelectOnThisOrSuper(MemberSelectExpressionTree tree)

Checks of is the given tree is selecting with this or super

Parameters:

tree - The tree to check.

Returns:

true when the tree is a select on this or super

See Also:

isSelectOnThisOrSuper(AssignmentExpressionTree)

extractIdentifier

public static IdentifierTree extractIdentifier(AssignmentExpressionTree tree)

skipParentheses

public static ExpressionTree skipParentheses(ExpressionTree tree)

isNullLiteral

public static boolean isNullLiteral(ExpressionTree tree)