Snapshot 621d3b6adc5a7cb6f13e27610aa33af48f13da27 from master branch of git://git.jetbrains.org/idea/community.git

Change-Id: I3e2f8acd6054389626ab7c0f9065c8d905e99436

1 files changed, 137 insertions, 0 deletions

diff --git a/java/java-impl/src/com/intellij/spi/parsing/SPIParserDefinition.java b/java/java-impl/src/com/intellij/spi/parsing/SPIParserDefinition.java
new file mode 100644
index 000000000000..f32bd37a11d9
--- /dev/null
+++ b/java/java-impl/src/com/intellij/spi/parsing/SPIParserDefinition.java
@@ -0,0 +1,137 @@
+/*
+ * 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.SPIProviderElement;
+import com.intellij.spi.psi.SPIProvidersElementList;
+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 SPIProvidersElementList(node);
+    }
+    if (elementType == SPIElementTypes.PROVIDER) {
+      return new SPIProviderElement(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() == JavaTokenType.IDENTIFIER) {
+      final PsiBuilder.Marker prop = builder.mark();
+
+      parseProviderChar(builder);
+      prop.done(SPIElementTypes.PROVIDER);
+    }
+    else {
+      builder.advanceLexer();
+      builder.error("Unexpected token");
+    }
+  }
+
+  private static void parseProviderChar(final PsiBuilder builder) {
+    LOG.assertTrue(builder.getTokenType() == JavaTokenType.IDENTIFIER);
+    builder.advanceLexer();
+    final IElementType tokenType = builder.getTokenType();
+    if (tokenType == JavaTokenType.DOT || tokenType == SPITokenType.DOLLAR) {
+      builder.advanceLexer();
+      parseProviderChar(builder);
+    }
+  }
+}