Remove dead code related to the diagnostics server.

pkg/analysis_server/lib/src/status/ast_writer.dart

-// Copyright (c) 2015, 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.
-
-import 'dart:collection';
-
-import 'package:analysis_server/src/status/tree_writer.dart';
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/visitor.dart';
-import 'package:analyzer/src/dart/ast/ast.dart';
-
-/**
- * A visitor that will produce an HTML representation of an AST structure.
- */
-class AstWriter extends UnifyingAstVisitor with TreeWriter {

[Brian Wilkerson, 2017/05/31 14:54:43]

It has frequently been very useful to see the AST created. I think we should
keep this and consider adding a "Get Results" button / link for files being
analyzed that would enable us to get analysis results on demand.

[devoncarew, 2017/06/01 16:59:11]

Done.

-  /**
-   * Initialize a newly created element writer to write the HTML representation
-   * of visited nodes on the given [buffer].
-   */
-  AstWriter(StringBuffer buffer) {
-    this.buffer = buffer;
-  }
-
-  @override
-  void visitNode(AstNode node) {
-    _writeNode(node);
-    writeProperties(_computeProperties(node));
-    indentLevel++;
-    try {
-      node.visitChildren(this);
-    } finally {
-      indentLevel--;
-    }
-  }
-
-  /**
-   * Write a representation of the properties of the given [node] to the buffer.
-   */
-  Map<String, Object> _computeProperties(AstNode node) {
-    Map<String, Object> properties = new HashMap<String, Object>();
-
-    properties['name'] = _getName(node);
-    if (node is ArgumentListImpl) {
-      properties['static parameter types'] = node.correspondingStaticParameters;
-      properties['propagated parameter types'] =
-          node.correspondingPropagatedParameters;
-    } else if (node is Annotation) {
-      properties['element'] = node.element;
-      properties['element annotation'] = node.elementAnnotation;
-    } else if (node is BinaryExpression) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is ClassDeclaration) {
-      properties['element'] = node.element;
-      properties['abstract keyword'] = node.abstractKeyword;
-    } else if (node is ClassTypeAlias) {
-      properties['element'] = node.element;
-      properties['abstract keyword'] = node.abstractKeyword;
-    } else if (node is CompilationUnit) {
-      properties['element'] = node.element;
-    } else if (node is Configuration) {
-      properties['uriSource'] = node.uriSource;
-    } else if (node is ConstructorName) {
-      properties['static element'] = node.staticElement;
-    } else if (node is DeclaredIdentifier) {
-      properties['element'] = node.element;
-      properties['keyword'] = node.keyword;
-    } else if (node is ExportDirective) {
-      properties['element'] = node.element;
-      properties['selectedSource'] = node.selectedSource;
-      properties['uriSource'] = node.uriSource;
-    } else if (node is FieldDeclaration) {
-      properties['static keyword'] = node.staticKeyword;
-    } else if (node is FormalParameter) {
-      properties['element'] = node.element;
-      properties['kind'] = node.kind;
-    } else if (node is FunctionDeclaration) {
-      properties['element'] = node.element;
-      properties['external keyword'] = node.externalKeyword;
-      properties['property keyword'] = node.propertyKeyword;
-    } else if (node is FunctionExpressionInvocation) {
-      properties['static element'] = node.staticElement;
-      properties['static invoke type'] = node.staticInvokeType;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated invoke type'] = node.propagatedInvokeType;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is ImportDirective) {
-      properties['element'] = node.element;
-      properties['selectedSource'] = node.selectedSource;
-      properties['uriSource'] = node.uriSource;
-    } else if (node is IndexExpression) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is InstanceCreationExpression) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is LibraryDirective) {
-      properties['element'] = node.element;
-    } else if (node is MethodDeclaration) {
-      properties['element'] = node.element;
-      properties['external keyword'] = node.externalKeyword;
-      properties['modifier keyword'] = node.modifierKeyword;
-      properties['operator keyword'] = node.operatorKeyword;
-      properties['property keyword'] = node.propertyKeyword;
-    } else if (node is MethodInvocation) {
-      properties['static invoke type'] = node.staticInvokeType;
-      properties['static type'] = node.staticType;
-      properties['propagated invoke type'] = node.propagatedInvokeType;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is PartDirective) {
-      properties['element'] = node.element;
-      properties['uriSource'] = node.uriSource;
-    } else if (node is PartOfDirective) {
-      properties['element'] = node.element;
-    } else if (node is PostfixExpression) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is PrefixExpression) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is RedirectingConstructorInvocation) {
-      properties['static element'] = node.staticElement;
-    } else if (node is SimpleIdentifier) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is SimpleStringLiteral) {
-      properties['value'] = node.value;
-    } else if (node is SuperConstructorInvocation) {
-      properties['static element'] = node.staticElement;
-    } else if (node is TypeAnnotation) {
-      properties['type'] = node.type;
-    } else if (node is VariableDeclarationList) {
-      properties['keyword'] = node.keyword;
-    } else if (node is Declaration) {
-      properties['element'] = node.element;
-    } else if (node is Expression) {
-      properties['static type'] = node.staticType;
-      properties['propagated type'] = node.propagatedType;
-    } else if (node is FunctionBody) {
-      properties['isAsynchronous'] = node.isAsynchronous;
-      properties['isGenerator'] = node.isGenerator;
-    } else if (node is Identifier) {
-      properties['static element'] = node.staticElement;
-      properties['static type'] = node.staticType;
-      properties['propagated element'] = node.propagatedElement;
-      properties['propagated type'] = node.propagatedType;
-    }
-
-    return properties;
-  }
-
-  /**
-   * Return the name of the given [node], or `null` if the given node is not a
-   * declaration.
-   */
-  String _getName(AstNode node) {
-    if (node is ClassTypeAlias) {
-      return node.name.name;
-    } else if (node is ClassDeclaration) {
-      return node.name.name;
-    } else if (node is ConstructorDeclaration) {
-      if (node.name == null) {
-        return node.returnType.name;
-      } else {
-        return node.returnType.name + '.' + node.name.name;
-      }
-    } else if (node is ConstructorName) {
-      return node.toSource();
-    } else if (node is FieldDeclaration) {
-      return _getNames(node.fields);
-    } else if (node is FunctionDeclaration) {
-      SimpleIdentifier nameNode = node.name;
-      if (nameNode != null) {
-        return nameNode.name;
-      }
-    } else if (node is FunctionTypeAlias) {
-      return node.name.name;
-    } else if (node is Identifier) {
-      return node.name;
-    } else if (node is MethodDeclaration) {
-      return node.name.name;
-    } else if (node is TopLevelVariableDeclaration) {
-      return _getNames(node.variables);
-    } else if (node is TypeAnnotation) {
-      return node.toSource();
-    } else if (node is TypeParameter) {
-      return node.name.name;
-    } else if (node is VariableDeclaration) {
-      return node.name.name;
-    }
-    return null;
-  }
-
-  /**
-   * Return a string containing a comma-separated list of the names of all of
-   * the variables in the given list of [variables].
-   */
-  String _getNames(VariableDeclarationList variables) {
-    StringBuffer buffer = new StringBuffer();
-    bool first = true;
-    for (VariableDeclaration variable in variables.variables) {
-      if (first) {
-        first = false;
-      } else {
-        buffer.write(', ');
-      }
-      buffer.write(variable.name.name);
-    }
-    return buffer.toString();
-  }
-
-  /**
-   * Write a representation of the given [node] to the buffer.
-   */
-  void _writeNode(AstNode node) {
-    indent();
-    buffer.write(node.runtimeType);
-    buffer.write(' <span style="color:gray">[');
-    buffer.write(node.offset);
-    buffer.write('..');
-    buffer.write(node.offset + node.length - 1);
-    buffer.write(']');
-    if (node.isSynthetic) {
-      buffer.write(' (synthetic)');
-    }
-    buffer.write('</span>');
-    buffer.write('<br>');
-  }
-}