// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package fuchsia.developer.plugin.fidl;

import com.intellij.lang.ASTNode;
import com.intellij.lang.ParserDefinition;
import com.intellij.lang.PsiParser;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.project.Project;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IFileElementType;
import com.intellij.psi.tree.TokenSet;
import fuchsia.developer.plugin.fidl.parser.Parser;
import fuchsia.developer.plugin.fidl.psi.File;
import fuchsia.developer.plugin.fidl.psi.Types;
import org.jetbrains.annotations.NotNull;

public class FidlParserDefinition implements ParserDefinition {
  public static final TokenSet WHITE_SPACES = TokenSet.create(TokenType.WHITE_SPACE);
  public static final TokenSet COMMENTS = TokenSet.create(Types.LINE_COMMENT);
  public static final IFileElementType FILE = new IFileElementType(Language.INSTANCE);

  @NotNull
  @Override
  public Lexer createLexer(Project project) {
    return new LexerAdapter();
  }

  @NotNull
  public TokenSet getWhitespaceTokens() {
    return WHITE_SPACES;
  }

  @NotNull
  public TokenSet getCommentTokens() {
    return COMMENTS;
  }

  @NotNull
  public TokenSet getStringLiteralElements() {
    return TokenSet.EMPTY;
  }

  @NotNull
  public PsiParser createParser(final Project project) {
    return new Parser();
  }

  @Override
  public IFileElementType getFileNodeType() {
    return FILE;
  }

  public PsiFile createFile(FileViewProvider viewProvider) {
    return new File(viewProvider);
  }

  @NotNull
  public PsiElement createElement(ASTNode node) {
    return Types.Factory.createElement(node);
  }
}