| /* |
| * 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.types; |
| |
| import com.intellij.lang.PsiBuilder; |
| import com.intellij.psi.tree.IElementType; |
| import org.jetbrains.plugins.groovy.GroovyBundle; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.parser.GroovyElementTypes; |
| import org.jetbrains.plugins.groovy.lang.parser.parsing.statements.typeDefinitions.ReferenceElement; |
| import org.jetbrains.plugins.groovy.lang.parser.parsing.util.ParserUtils; |
| |
| /** |
| * @autor: ilyas |
| */ |
| public class TypeParameters { |
| |
| public static IElementType parse(PsiBuilder builder) { |
| if (GroovyTokenTypes.mLT == builder.getTokenType()) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mLT); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| while (parseTypeParameter(builder) != GroovyElementTypes.WRONGWAY) { |
| if (!ParserUtils.getToken(builder, GroovyTokenTypes.mCOMMA)) { |
| break; |
| } |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| eatCommas(builder); |
| } |
| eatCommas(builder); |
| if (!ParserUtils.getToken(builder, GroovyTokenTypes.mGT)) { |
| builder.error(GroovyBundle.message("gt.expected")); |
| } |
| marker.done(GroovyElementTypes.TYPE_PARAMETER_LIST); |
| return GroovyElementTypes.TYPE_PARAMETER_LIST; |
| } |
| |
| return GroovyElementTypes.WRONGWAY; |
| } |
| |
| private static void eatCommas(PsiBuilder builder) { |
| while (GroovyTokenTypes.mCOMMA == builder.getTokenType()) { |
| builder.error(GroovyBundle.message("type.parameter.expected")); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mCOMMA); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| } |
| } |
| |
| |
| private static IElementType parseTypeParameter(PsiBuilder builder) { |
| if (GroovyTokenTypes.mIDENT == builder.getTokenType()) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mIDENT); |
| if (GroovyTokenTypes.kEXTENDS == builder.getTokenType()) { |
| parseExtendsBoundList(builder); |
| } else { |
| builder.mark().done(GroovyElementTypes.TYPE_PARAMETER_EXTENDS_BOUND_LIST); |
| } |
| marker.done(GroovyElementTypes.TYPE_PARAMETER); |
| return GroovyElementTypes.TYPE_PARAMETER; |
| } |
| return GroovyElementTypes.WRONGWAY; |
| } |
| |
| |
| private static IElementType parseExtendsBoundList(PsiBuilder builder) { |
| PsiBuilder.Marker marker = builder.mark(); |
| ParserUtils.getToken(builder, GroovyTokenTypes.kEXTENDS); |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| if (ReferenceElement.parseReferenceElement(builder) == ReferenceElement.ReferenceElementResult.FAIL) { |
| builder.error(GroovyBundle.message("identifier.expected")); |
| } else { |
| while (ParserUtils.getToken(builder, GroovyTokenTypes.mBAND)) { |
| ParserUtils.getToken(builder, GroovyTokenTypes.mNLS); |
| if (ReferenceElement.parseReferenceElement(builder) == ReferenceElement.ReferenceElementResult.FAIL) { |
| builder.error(GroovyBundle.message("type.expected")); |
| } |
| } |
| } |
| marker.done(GroovyElementTypes.TYPE_PARAMETER_EXTENDS_BOUND_LIST); |
| return GroovyElementTypes.TYPE_PARAMETER_EXTENDS_BOUND_LIST; |
| } |
| } |