Added support for dumping AST to console, text file or dot file

Review URL: http://codereview.chromium.org//8566019

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@1587 260f80e4-7a28-3924-810f-c04153c831b5

Author: [email protected]

compiler/java/com/google/dart/compiler/CommandLineOptions.java

@@ -72,6 +72,14 @@ public static class CompilerOptions {
     @Option(name = "--generate_source_maps",
         usage = "Generate source maps")
     private boolean generateSourceMaps = false;
+    
+    @Option(name = "--dump-ast-format", aliases={"-dump-ast-format"},
+    		usage = "Dump parse tree. Supported formats include console, text or dot")
+    private String dumpAST = "";
+    
+    @Option(name = "--coverage-instrumenter", aliases={"-coverage-instrumentor"},
+    		usage = "Add coverage instrumentation probes")
+    private boolean coverage = false;
 
     @Option(name = "--human-readable-output",
         usage = "Write human readable javascript")
@@ -246,6 +254,14 @@ public boolean generateSourceMaps() {
     public boolean generateHumanReadableOutput() {
       return generateHumanReadableOutput;
     }
+    
+    public String dumpAST(){
+    	return dumpAST;
+    }
+    
+    public boolean instrument4Coverage(){
+    	return coverage;
+    }
 
     /**
      * @return the path to receive compiler output.

compiler/java/com/google/dart/compiler/DartCompiler.java

@@ -18,6 +18,8 @@
 import com.google.dart.compiler.ast.LibraryNode;
 import com.google.dart.compiler.ast.LibraryUnit;
 import com.google.dart.compiler.ast.Modifiers;
+import com.google.dart.compiler.ast.viz.ASTWriterFactory;
+import com.google.dart.compiler.ast.viz.BaseASTWriter;
 import com.google.dart.compiler.common.SourceInfo;
 import com.google.dart.compiler.metrics.CompilerMetrics;
 import com.google.dart.compiler.metrics.DartEventType;
@@ -664,13 +666,21 @@ private void compileLibraries() throws IOException {
       try {
         // Set entry point
         setEntryPoint();
+        
+        // Dump the compiler parse tree if dump format is set in arguments
+        BaseASTWriter astWriter = ASTWriterFactory.create(config);
 
         // The two following for loops can be parallelized.
         for (LibraryUnit lib : libraries.values()) {
           boolean persist = false;
 
           // Compile all the units in this library.
           for (DartUnit unit : lib.getUnits()) {
+          
+            if(astWriter != null) {
+              astWriter.process(unit);
+            }
+            
             // Don't compile api-only units.
             if (unit.isDiet()) {
               continue;

compiler/java/com/google/dart/compiler/ast/viz/ASTWriterFactory.java

@@ -0,0 +1,24 @@
+// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.google.dart.compiler.ast.viz;
+
+import com.google.dart.compiler.CompilerConfiguration;
+import com.google.dart.compiler.CommandLineOptions.CompilerOptions;
+
+public class ASTWriterFactory {
+  public static BaseASTWriter create(CompilerConfiguration config) {
+    String astFormat = config.getCompilerOptions().dumpAST();
+    CompilerOptions compilerOptions = config.getCompilerOptions();
+    String outDir = compilerOptions.getWorkDirectory().getAbsolutePath();
+    if ("console".equals(astFormat)) {
+      return new ConsoleWriter(outDir);
+    } else if ("text".equals(astFormat)) {
+      return new TextWriter(outDir);
+    } else if ("dot".equals(astFormat)) {
+      return new DotWriter(outDir);
+    }
+    return null;
+  }
+}