/* * Copyright 2013-2016 Sergey Ignatov, Alexander Zolotov, Florin Patan * * 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 com.goide.inspections; import com.goide.psi.GoExpression; import com.goide.psi.GoRangeClause; import com.goide.psi.GoType; import com.goide.psi.GoVisitor; import com.goide.psi.impl.GoPsiImplUtil; import com.goide.psi.impl.GoTypeUtil; import com.intellij.codeInspection.LocalInspectionToolSession; import com.intellij.codeInspection.ProblemHighlightType; import com.intellij.codeInspection.ProblemsHolder; import org.jetbrains.annotations.NotNull; public class GoRangeIterationOnIllegalTypeInspection extends GoInspectionBase { @NotNull @Override protected GoVisitor buildGoVisitor(@NotNull ProblemsHolder holder, @NotNull LocalInspectionToolSession session) { return new GoVisitor() { @Override public void visitRangeClause(@NotNull GoRangeClause o) { super.visitRangeClause(o); GoExpression expression = o.getRangeExpression(); GoType type = expression != null ? expression.getGoType(null) : null; if (type != null && !GoTypeUtil.isIterable(type)) { holder.registerProblem(expression, "Cannot range over data (type " + GoPsiImplUtil.getText(type) + ")", ProblemHighlightType.GENERIC_ERROR_OR_WARNING); } } }; } }