org.jetbrains.jet.lang.diagnostics.PositioningStrategy.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2014 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.jet.lang.diagnostics
import com.intellij.lang.ASTNode
import com.intellij.openapi.util.TextRange
import com.intellij.psi.PsiComment
import com.intellij.psi.PsiElement
import com.intellij.psi.PsiErrorElement
import com.intellij.psi.PsiWhiteSpace
public open class PositioningStrategy {
public open fun markDiagnostic(diagnostic: ParametrizedDiagnostic): List {
return mark(diagnostic.getPsiElement())
}
protected open fun mark(element: E): List {
return markElement(element)
}
public open fun isValid(element: E): Boolean {
return !hasSyntaxErrors(element)
}
}
fun markElement(element: PsiElement): List {
return listOf(TextRange(getStartOffset(element), getEndOffset(element)))
}
fun markNode(node: ASTNode): List {
return markElement(node.getPsi())
}
fun markRange(range: TextRange): List {
return listOf(range)
}
fun markRange(from: PsiElement, to: PsiElement): List {
return markRange(TextRange(getStartOffset(from), getEndOffset(to)))
}
private fun getStartOffset(element: PsiElement): Int {
var child = element.getFirstChild()
if (child != null) {
while (child is PsiComment || child is PsiWhiteSpace) {
child = child!!.getNextSibling()
}
if (child != null) {
return getStartOffset(child!!)
}
}
return element.getTextRange().getStartOffset()
}
private fun getEndOffset(element: PsiElement): Int {
var child = element.getLastChild()
if (child != null) {
while (child is PsiComment || child is PsiWhiteSpace) {
child = child!!.getPrevSibling()
}
if (child != null) {
return getEndOffset(child!!)
}
}
return element.getTextRange().getEndOffset()
}
fun hasSyntaxErrors(psiElement: PsiElement): Boolean {
if (psiElement is PsiErrorElement) return true
val children = psiElement.getChildren()
return children.isNotEmpty() && hasSyntaxErrors(children.last())
}