如何使用 Dart 分析器从源代码生成 AST 并使用 AST

AST

文档:https://www.dartdocs.org/documentation/analyzer_experimental/0.8.0/analyzer/parseCompilationUnit.html

一些聪明的程序员提供了一个优秀的示例:https://github.com/mythz/dart-samples/blob/master/frog/leg/scanner/keyword.dart

RecursiveASTVisitor接口:https://www.dartdocs.org/documentation/analyzer_experimental/0.8.0/analyzer/RecursiveASTVisitor-class.html

现在，示例代码已移至下面的wiki.

DART分析服务器或DART服务

IDE或编辑器检测错误所依赖的包.

GIT:https://github.com/dart-lang/dart-services

安装:

• Git克隆https://github.com/dart-lang/dart-services.git

运行服务器:

• cd dart服务
• Dart./bin/services.dart--端口8082

客户端代码:

import "dart:convert";
import "dart:io";


const String url = "localhost";
const String path = r"api/dartservices/v1/analyze";
String src = """
main(){
 print('hi');
}
""";

void main() {
  analyse();
}

analyse() async {
  Map m = {'source': src};
  var client = new HttpClient();
  String data = JSON.encode(m);
  HttpClientRequest request = await client.post (
      url, 8082, path);
  request.headers.contentType = ContentType.JSON;
  request.write(data);
  HttpClientResponse r = await request.close();
  r.transform(UTF8.decoder).listen((d){
    print(d);
  });
  client.close(force: false);
}

该服务器为/lib/src/common_server中的CommonServer类提供服务.dart作为api."api/dartservices/v1/analyze"的帖子调用类中的以下方法.

  @ApiMethod(
      method: 'POST',
      path: 'analyze',
      description:
          'Analyze the given Dart source code and return any resulting '
          'analysis errors or warnings.')
  Future<AnalysisResults> analyze(SourceRequest request) {
    return _analyze(request.source);
  }

将Analyzer用作本地对象.

import 'src/analyzer.dart';
import 'src/api_classes.dart';
import 'dart:developer';
String src = """
main(){
  a.print('hi');
}
""";
main() async {
  String sdkPath = r'C:\tools\dart-sdk';
  var a = new Analyzer(sdkPath);
  var m = {'main.dart':src};
  debugger();
  AnalysisResults r = await a.analyzeMulti(m);
  print(r.issues);
  print(r.resolvedImports);
}

Analyzer相当复杂，并且笼罩在微任务中，调试器帮不了什么忙.