下面列出了org.eclipse.jdt.core.dom.ParenthesizedExpression#EXPRESSION_PROPERTY 实例代码,或者点击链接到github查看源代码,也可以在右侧发表评论。
private static boolean locationNeedsParentheses(StructuralPropertyDescriptor locationInParent) {
if (locationInParent instanceof ChildListPropertyDescriptor && locationInParent != InfixExpression.EXTENDED_OPERANDS_PROPERTY) {
// e.g. argument lists of MethodInvocation, ClassInstanceCreation, dimensions of ArrayCreation ...
return false;
}
if (locationInParent == VariableDeclarationFragment.INITIALIZER_PROPERTY
|| locationInParent == SingleVariableDeclaration.INITIALIZER_PROPERTY
|| locationInParent == ReturnStatement.EXPRESSION_PROPERTY
|| locationInParent == EnhancedForStatement.EXPRESSION_PROPERTY
|| locationInParent == ForStatement.EXPRESSION_PROPERTY
|| locationInParent == WhileStatement.EXPRESSION_PROPERTY
|| locationInParent == DoStatement.EXPRESSION_PROPERTY
|| locationInParent == AssertStatement.EXPRESSION_PROPERTY
|| locationInParent == AssertStatement.MESSAGE_PROPERTY
|| locationInParent == IfStatement.EXPRESSION_PROPERTY
|| locationInParent == SwitchStatement.EXPRESSION_PROPERTY
|| locationInParent == SwitchCase.EXPRESSION_PROPERTY
|| locationInParent == ArrayAccess.INDEX_PROPERTY
|| locationInParent == ThrowStatement.EXPRESSION_PROPERTY
|| locationInParent == SynchronizedStatement.EXPRESSION_PROPERTY
|| locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
return false;
}
return true;
}
private static Expression getBooleanExpression(ASTNode node) {
if (!(node instanceof Expression)) {
return null;
}
// check if the node is a location where it can be negated
StructuralPropertyDescriptor locationInParent = node.getLocationInParent();
if (locationInParent == QualifiedName.NAME_PROPERTY) {
node = node.getParent();
locationInParent = node.getLocationInParent();
}
while (locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
node = node.getParent();
locationInParent = node.getLocationInParent();
}
Expression expression = (Expression) node;
if (!isBoolean(expression)) {
return null;
}
if (expression.getParent() instanceof InfixExpression) {
return expression;
}
if (locationInParent == Assignment.RIGHT_HAND_SIDE_PROPERTY || locationInParent == IfStatement.EXPRESSION_PROPERTY || locationInParent == WhileStatement.EXPRESSION_PROPERTY || locationInParent == DoStatement.EXPRESSION_PROPERTY
|| locationInParent == ReturnStatement.EXPRESSION_PROPERTY || locationInParent == ForStatement.EXPRESSION_PROPERTY || locationInParent == AssertStatement.EXPRESSION_PROPERTY
|| locationInParent == MethodInvocation.ARGUMENTS_PROPERTY || locationInParent == ConstructorInvocation.ARGUMENTS_PROPERTY || locationInParent == SuperMethodInvocation.ARGUMENTS_PROPERTY
|| locationInParent == EnumConstantDeclaration.ARGUMENTS_PROPERTY || locationInParent == SuperConstructorInvocation.ARGUMENTS_PROPERTY || locationInParent == ClassInstanceCreation.ARGUMENTS_PROPERTY
|| locationInParent == ConditionalExpression.EXPRESSION_PROPERTY || locationInParent == PrefixExpression.OPERAND_PROPERTY) {
return expression;
}
return null;
}
/**
* Returns whether an expression at the given location needs explicit boxing.
*
* @param expression the expression
* @return <code>true</code> iff an expression at the given location needs explicit boxing
* @since 3.6
*/
private static boolean needsExplicitBoxing(Expression expression) {
StructuralPropertyDescriptor locationInParent= expression.getLocationInParent();
if (locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY)
return needsExplicitBoxing((ParenthesizedExpression) expression.getParent());
if (locationInParent == ClassInstanceCreation.EXPRESSION_PROPERTY
|| locationInParent == FieldAccess.EXPRESSION_PROPERTY
|| locationInParent == MethodInvocation.EXPRESSION_PROPERTY)
return true;
return false;
}
private static Expression getBooleanExpression(ASTNode node) {
if (!(node instanceof Expression)) {
return null;
}
// check if the node is a location where it can be negated
StructuralPropertyDescriptor locationInParent= node.getLocationInParent();
if (locationInParent == QualifiedName.NAME_PROPERTY) {
node= node.getParent();
locationInParent= node.getLocationInParent();
}
while (locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
node= node.getParent();
locationInParent= node.getLocationInParent();
}
Expression expression= (Expression) node;
if (!isBoolean(expression)) {
return null;
}
if (expression.getParent() instanceof InfixExpression) {
return expression;
}
if (locationInParent == Assignment.RIGHT_HAND_SIDE_PROPERTY || locationInParent == IfStatement.EXPRESSION_PROPERTY
|| locationInParent == WhileStatement.EXPRESSION_PROPERTY || locationInParent == DoStatement.EXPRESSION_PROPERTY
|| locationInParent == ReturnStatement.EXPRESSION_PROPERTY || locationInParent == ForStatement.EXPRESSION_PROPERTY
|| locationInParent == AssertStatement.EXPRESSION_PROPERTY || locationInParent == MethodInvocation.ARGUMENTS_PROPERTY
|| locationInParent == ConstructorInvocation.ARGUMENTS_PROPERTY || locationInParent == SuperMethodInvocation.ARGUMENTS_PROPERTY
|| locationInParent == EnumConstantDeclaration.ARGUMENTS_PROPERTY || locationInParent == SuperConstructorInvocation.ARGUMENTS_PROPERTY
|| locationInParent == ClassInstanceCreation.ARGUMENTS_PROPERTY || locationInParent == ConditionalExpression.EXPRESSION_PROPERTY
|| locationInParent == PrefixExpression.OPERAND_PROPERTY) {
return expression;
}
return null;
}