org.jetbrains.kotlin.resolve.calls.util.underscoreUtil.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.resolve.calls.util
import com.intellij.psi.StubBasedPsiElement
import org.jetbrains.kotlin.psi.KtNamedDeclaration
/**
* val lambda = fun(x: Int, _: String, `_`: Double) = 1
*
* This property is true only for second value parameter in the example above
*/
val KtNamedDeclaration.isSingleUnderscore: Boolean
get() {
// We don't want to call 'getNameIdentifier' on stubs to prevent text building
// But it's fine because one-underscore names are prohibited for non-local declarations (only lambda parameters, local vars are allowed)
if (this is StubBasedPsiElement<*> && this.stub != null) return false
return nameIdentifier?.text == "_"
}