| /* |
| * Copyright 2000-2013 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 com.intellij.spi.parsing; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.lang.ParserDefinition; |
| import com.intellij.lang.PsiBuilder; |
| import com.intellij.lang.PsiParser; |
| import com.intellij.lexer.Lexer; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.IFileElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.psi.util.PsiUtilCore; |
| import com.intellij.spi.psi.SPIClassProviderReferenceElement; |
| import com.intellij.spi.psi.SPIClassProvidersElementList; |
| import com.intellij.spi.psi.SPIPackageOrClassReferenceElement; |
| import com.intellij.spi.psi.SPIFile; |
| import com.intellij.lang.spi.SPILanguage; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * User: anna |
| */ |
| public class SPIParserDefinition implements ParserDefinition { |
| public static final IFileElementType SPI_FILE_ELEMENT_TYPE = new IFileElementType(SPILanguage.INSTANCE); |
| |
| private static final TokenSet WHITE_SPACES = TokenSet.create(TokenType.WHITE_SPACE); |
| private static final Logger LOG = Logger.getInstance("#" + SPIParserDefinition.class.getName()); |
| |
| @NotNull |
| @Override |
| public Lexer createLexer(Project project) { |
| return new SPILexer(); |
| } |
| |
| @Override |
| public PsiParser createParser(Project project) { |
| return new PsiParser() { |
| @NotNull |
| @Override |
| public ASTNode parse(IElementType root, PsiBuilder builder) { |
| final PsiBuilder.Marker rootMarker = builder.mark(); |
| final PsiBuilder.Marker propertiesList = builder.mark(); |
| while (!builder.eof()) { |
| parseProvider(builder); |
| } |
| propertiesList.done(SPIElementTypes.PROVIDERS_LIST); |
| rootMarker.done(root); |
| return builder.getTreeBuilt(); |
| } |
| }; |
| } |
| |
| @Override |
| public IFileElementType getFileNodeType() { |
| return SPI_FILE_ELEMENT_TYPE; |
| } |
| |
| @NotNull |
| @Override |
| public TokenSet getWhitespaceTokens() { |
| return WHITE_SPACES; |
| } |
| |
| @NotNull |
| @Override |
| public TokenSet getCommentTokens() { |
| return TokenSet.create(JavaTokenType.END_OF_LINE_COMMENT); |
| } |
| |
| @NotNull |
| @Override |
| public TokenSet getStringLiteralElements() { |
| return TokenSet.EMPTY; |
| } |
| |
| @NotNull |
| @Override |
| public PsiElement createElement(ASTNode node) { |
| final IElementType elementType = node.getElementType(); |
| if (elementType == SPIElementTypes.PROVIDERS_LIST) { |
| return new SPIClassProvidersElementList(node); |
| } |
| if (elementType == SPIElementTypes.PROVIDER) { |
| return new SPIClassProviderReferenceElement(node); |
| } |
| if (elementType == SPIElementTypes.PACK) { |
| return new SPIPackageOrClassReferenceElement(node); |
| } |
| return PsiUtilCore.NULL_PSI_ELEMENT; |
| } |
| |
| @Override |
| public PsiFile createFile(FileViewProvider viewProvider) { |
| return new SPIFile(viewProvider); |
| } |
| |
| @Override |
| public SpaceRequirements spaceExistanceTypeBetweenTokens(ASTNode left, ASTNode right) { |
| return SpaceRequirements.MAY; |
| } |
| |
| public static void parseProvider(PsiBuilder builder) { |
| if (builder.getTokenType() == SPITokenType.IDENTIFIER) { |
| final PsiBuilder.Marker prop = builder.mark(); |
| |
| parseProviderChar(builder, builder.mark()); |
| prop.done(SPIElementTypes.PROVIDER); |
| } |
| else { |
| builder.advanceLexer(); |
| builder.error("Unexpected token"); |
| } |
| } |
| |
| private static void parseProviderChar(final PsiBuilder builder, PsiBuilder.Marker pack) { |
| builder.advanceLexer(); |
| final IElementType tokenType = builder.getTokenType(); |
| if (tokenType == JavaTokenType.DOT || tokenType == SPITokenType.DOLLAR) { |
| pack.done(SPIElementTypes.PACK); |
| builder.advanceLexer(); |
| final IElementType initialTokenType = builder.getTokenType(); |
| if (initialTokenType == null) return; |
| parseProviderChar(builder, pack.precede()); |
| } else { |
| pack.drop(); |
| } |
| } |
| } |