| /* |
| * Copyright 2000-2014 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.plugins.groovy.lang.parser.parsing.statements; |
| |
| import com.intellij.lang.PsiBuilder; |
| import com.intellij.psi.tree.TokenSet; |
| import org.jetbrains.plugins.groovy.GroovyBundle; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyElementType; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.parser.GroovyElementTypes; |
| import org.jetbrains.plugins.groovy.lang.parser.GroovyParser; |
| import org.jetbrains.plugins.groovy.lang.parser.parsing.statements.expressions.AssignmentExpression; |
| import org.jetbrains.plugins.groovy.lang.parser.parsing.statements.expressions.ConditionalExpression; |
| import org.jetbrains.plugins.groovy.lang.parser.parsing.util.ParserUtils; |
| |
| /** |
| * @author ilyas |
| */ |
| public class BranchStatement { |
| |
| public static final TokenSet BRANCH_KEYWORDS = TokenSet.create(GroovyTokenTypes.kRETURN, |
| GroovyTokenTypes.kBREAK, |
| GroovyTokenTypes.kCONTINUE, |
| GroovyTokenTypes.kTHROW, |
| GroovyTokenTypes.kRETURN, |
| GroovyTokenTypes.kASSERT); |
| |
| public static boolean parse(PsiBuilder builder, GroovyParser parser) { |
| |
| if (GroovyTokenTypes.kTHROW.equals(builder.getTokenType())) { |
| throwParse(builder, parser); |
| return true; |
| } |
| if (GroovyTokenTypes.kASSERT.equals(builder.getTokenType())) { |
| assertParse(builder, parser); |
| return true; |
| } |
| if (GroovyTokenTypes.kRETURN.equals(builder.getTokenType())) { |
| returnParse(builder, parser); |
| return true; |
| } |
| if (GroovyTokenTypes.kBREAK.equals(builder.getTokenType()) || |
| GroovyTokenTypes.kCONTINUE.equals(builder.getTokenType())) { |
| breakOrContinueParse(builder); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * return [Expression] |
| * |
| * @param builder |
| * @return |
| */ |
| private static void returnParse(PsiBuilder builder, GroovyParser parser) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.kRETURN); |
| AssignmentExpression.parse(builder, parser); |
| marker.done(GroovyElementTypes.RETURN_STATEMENT); |
| } |
| |
| /** |
| * throw [Expression] |
| * |
| * @param builder |
| * @return |
| */ |
| private static void throwParse(PsiBuilder builder, GroovyParser parser) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.kTHROW); |
| if (!AssignmentExpression.parse(builder, parser)) { |
| builder.error(GroovyBundle.message("expression.expected")); |
| } |
| marker.done(GroovyElementTypes.THROW_STATEMENT); |
| } |
| |
| /** |
| * assert CondExpr [(COMMA | COLON) Expression] |
| * |
| * @param builder |
| * @return |
| */ |
| private static void assertParse(PsiBuilder builder, GroovyParser parser) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.kASSERT); |
| if (!ConditionalExpression.parse(builder, parser)) { |
| builder.error(GroovyBundle.message("expression.expected")); |
| } |
| |
| if (ParserUtils.lookAhead(builder, GroovyTokenTypes.mCOLON) || GroovyTokenTypes.mCOMMA.equals(builder.getTokenType())) { |
| builder.advanceLexer(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| if (!AssignmentExpression.parse(builder, parser)) { |
| builder.error(GroovyBundle.message("expression.expected")); |
| } |
| } |
| marker.done(GroovyElementTypes.ASSERT_STATEMENT); |
| } |
| |
| /** |
| * (BREAK | CONTINUE) ... |
| * |
| * @param builder |
| * @return |
| */ |
| private static void breakOrContinueParse(PsiBuilder builder) { |
| PsiBuilder.Marker marker = builder.mark(); |
| GroovyElementType result = GroovyTokenTypes.kBREAK.equals(builder.getTokenType()) ? GroovyElementTypes.BREAK_STATEMENT |
| : GroovyElementTypes.CONTINUE_STATEMENT; |
| |
| builder.advanceLexer(); |
| |
| ParserUtils.getToken(builder, GroovyTokenTypes.mIDENT); |
| |
| marker.done(result); |
| } |
| |
| |
| } |