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cpg-core/de.fraunhofer.aisec.cpg.graph/ArgumentHolder

ArgumentHolder

interface ArgumentHolder : Holder<Expression>

This interfaces denotes that Node can accept arguments. The most famous example would be a CallExpression to populate CallExpression.arguments or the ReturnStatement.returnValue of a return statement.

We do have some use-cases where we are a little "relaxed" about what is an argument. For example, we also consider the BinaryOperator.lhs and BinaryOperator.rhs of a binary operator as arguments, so we can use node builders in the Node Fluent DSL.

Inheritors

ReturnStatement

ThrowExpression

AssignExpression

CollectionComprehension

ComprehensionExpression

ConditionalExpression

InitializerListExpression

KeyValueExpression

MemberExpression

SubscriptExpression

Functions

abstract fun addArgument(expression: Expression)

Adds the expression to the list of arguments.

abstract fun hasArgument(expression: Expression): Boolean

Checks, if expression is part of the arguments.

open operator fun minusAssign(node: Expression)

open operator override fun plusAssign(node: Expression)

Adds a Node to the list of "held" nodes.

open fun removeArgument(expression: Expression): Boolean

Removes the expression from the list of arguments.

open override fun replace(old: Expression, new: Expression): Boolean

Replaces the existing node specified in old with the one in new. Implementation how to do that might be specific to the holder.

replaceArgument

abstract fun replaceArgument(old: Expression, new: Expression): Boolean

Replaces the existing argument specified in old with the one in new. Implementation how to do that might be specific to the argument holder.