dart2js 模块拆分

dart2js/README.md

@@ -1,3 +1,12 @@
 # fair_dart2js
 
-fair_compiler 的配套编译器，用于将 Dart 转为 JS。
+fair_compiler 的配套编译器，用于将 Dart 转为 JS。
+
+### 开发功能记录
+* try、catch
+    * 不支持 on 函数 例如  on Exception catch (e,s)，此类写法将会抛弃处理，请直接写 catch (e)
+
+### 待开发
+#### 原生函数转换
+* print
+* Exception

dart2js/lib/index.dart

@@ -4,7 +4,9 @@
  * found in the LICENSE file.
  */
 import 'dart:async';
-import './src/convertor.dart' show convertWidgetStateFile;
+
+import 'src/convertorV2.dart';
+
 
 Future<String> convertFile(String input, [bool compress = false]) async {
   return convertWidgetStateFile(input, compress);

dart2js/lib/src/__test_data__/tryCatch/tryTest.dart

@@ -0,0 +1,22 @@
+import 'package:fair_dart2js/src/covert/convertFunction.dart';
+/**
+ *  正常测试 try catch
+ * */
+
+String a = convertFunction('''
+void testTry() {
+  try {
+    int a=1;
+    int b=2;
+    int c=a+b;
+    print("1");
+    throw FormatException('Expected at least 1 section');
+  } catch (e,s) {
+    print('111'+e);
+  }
+}
+    ''');
+
+void main() {
+  print(a);
+}

dart2js/lib/src/__test_data__/tryCatch/tryTest2.dart

@@ -0,0 +1,25 @@
+import 'package:fair_dart2js/src/covert/convertFunction.dart';
+
+/**
+ * 测试 on 函数将被丢弃
+ * */
+
+String a = convertFunction('''
+void testTry() {
+  try {
+    int a=1;
+    int b=2;
+    int c=a+b;
+    print("1");
+    throw FormatException('Expected at least 1 section');
+  } on Exception catch (e,s) {
+    print('111'+e);
+  } catch (e) {
+    print('222'+e);
+  }
+}
+    ''');
+
+void main() {
+  print(a);
+}

dart2js/lib/src/__test_data__/tryCatch/tryTest3.dart

@@ -0,0 +1,21 @@
+import 'package:fair_dart2js/src/covert/convertFunction.dart';
+
+/**
+ * 测试 finally 处理
+ * */
+
+String a = convertFunction('''
+void testTry() {
+  try {
+    int a=1;
+  } catch (e,s) {
+    print('catch：'+e);
+  } finally{
+    print('finally...');
+  }
+}
+    ''');
+
+void main() {
+  print(a);
+}

dart2js/lib/src/convertor.dart

@@ -1754,3 +1754,5 @@ String uglify(String str) {
   }
   return buf.toString();
 }
+
+

dart2js/lib/src/convertorV2.dart

@@ -0,0 +1,14 @@
+export 'covert/convertClassString.dart';
+export 'covert/convertExpression.dart';
+export 'covert/convertFunction.dart';
+export 'covert/convertArrayFuncExpression.dart';
+export 'covert/convertBlock.dart';
+export 'covert/convertFunctionExpression.dart';
+export 'covert/convertStatements.dart';
+export 'covert/convertWidgetStateFile.dart';
+export 'covert/convertFunctionFromData.dart';
+export 'declaration/ClassDeclarationData.dart';
+export 'declaration/FieldDeclarationData.dart';
+export 'declaration/MethodDeclarationData.dart';
+
+

dart2js/lib/src/convertor_test.dart

@@ -3,8 +3,9 @@
  * Use of this source code is governed by a BSD type license that can be
  * found in the LICENSE file.
  */
-import 'convertor.dart';
+import 'convertorV2.dart';
 import 'dart:io' show Platform;
+import 'package:fair_dart2js/src/visitor/UniqueNameGenerator.dart';
 import 'package:path/path.dart' show dirname;
 
 bool compare(String testcaseName, String actual, String expected) {
@@ -13,7 +14,7 @@ bool compare(String testcaseName, String actual, String expected) {
   }
 
   var isNotEqual = (actual.isEmpty && expected.isNotEmpty) ||
-    (actual.isNotEmpty && expected.isEmpty);
+      (actual.isNotEmpty && expected.isEmpty);
   if (isNotEqual) {
     print('''$testcaseName Actual: $actual \r\nExpected: $expected''');
     return false;
@@ -31,7 +32,8 @@ bool compare(String testcaseName, String actual, String expected) {
       continue;
     }
     if (actual[i] != expected[j]) {
-      print('''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i(${actual.substring(i, i+30)}) $j(${expected.substring(j, j+30)})''');
+      print(
+          '''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i(${actual.substring(i, i + 30)}) $j(${expected.substring(j, j + 30)})''');
       return false;
     } else {
       i++;
@@ -43,7 +45,8 @@ bool compare(String testcaseName, String actual, String expected) {
       i++;
       continue;
     } else {
-      print('''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i(${actual[i]}) $j()''');
+      print(
+          '''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i(${actual[i]}) $j()''');
       return false;
     }
   }
@@ -52,7 +55,8 @@ bool compare(String testcaseName, String actual, String expected) {
       j++;
       continue;
     } else {
-      print('''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i() $j(${expected[j]})''');
+      print(
+          '''$testcaseName Actual: $actual \r\nExpected: $expected \r\nat position $i() $j(${expected[j]})''');
       return false;
     }
   }
@@ -1002,12 +1006,20 @@ bool testcaseDeclareList() {
 }
 
 bool testcaseSuper() {
-  return compare('testcaseSuper', convertFunctionFromData(MethodDeclarationData('testcaseSuper', '''
+  return compare(
+      'testcaseSuper',
+      convertFunctionFromData(
+          MethodDeclarationData(
+              'testcaseSuper',
+              '''
   void testcaseSuper() {
     super.initState();
     futureBuilderFuture = _generateData(this);
   }
-  ''', false), ClassDeclarationData()..parentClass='Parent'), '''
+  ''',
+              false),
+          ClassDeclarationData()..parentClass = 'Parent'),
+      '''
   function testcaseSuper() { 
             const __thiz__ = this;
       
@@ -1418,7 +1430,8 @@ res.total = json.total;
 
 bool testcaseClassDeclareFactoryConstructor() {
   UniqueNameGenerator().reset();
-  return compare('testcaseClassDeclareFactoryConstructor', convertClassString(r'''
+  return compare(
+      'testcaseClassDeclareFactoryConstructor', convertClassString(r'''
     class E {
       int e;
 
@@ -1472,7 +1485,8 @@ E.ee1 =       (str) => E.ee(int.parse(str));
 
 bool testcaseClassDeclareDelegateConstructor() {
   UniqueNameGenerator().reset();
-  return compare('testcaseClassDeclareDelegateConstructor', convertClassString(r'''
+  return compare(
+      'testcaseClassDeclareDelegateConstructor', convertClassString(r'''
     class E {
       int e;
 
@@ -1666,7 +1680,7 @@ b = 1;
 //     print(super.a.b);
 //   }
 //   '''), '''
-  
+
 //   ''');
 // }
 
@@ -2474,7 +2488,11 @@ this.g3 = xx;
 }
 
 bool testcaseImport() {
-  return compare('testcaseImport', convertWidgetStateFile(dirname(Platform.script.path) + '/__test_data__/page1/page1.dart'), '''
+  return compare(
+      'testcaseImport',
+      convertWidgetStateFile(
+          dirname(Platform.script.path) + '/__test_data__/page1/page1.dart'),
+      '''
   GLOBAL['#FairKey#'] = (function(__initProps__) {
       const __global__ = this;
                 defineModule(5, function(__mod__) {
@@ -2765,7 +2783,6 @@ fairProps = widget._props;
 }
 
 void main() {
-
   print('Executing testcases...');
   var arr = [
     testcaseFor1,
@@ -2844,4 +2861,4 @@ void main() {
   } else {
     print('''Testcase total ${arr.length} successful''');
   }
-}
+}

dart2js/lib/src/covert/convertArrayFuncExpression.dart

@@ -0,0 +1,21 @@
+import 'package:analyzer/dart/ast/ast.dart';
+
+import '../node/ArrowFunctionExpressionNode.dart';
+import '../node/GenericStatementNode.dart';
+import 'convertExpression.dart';
+
+String convertArrayFuncExpression(FunctionExpression code) {
+  var body = code.body as ExpressionFunctionBody;
+  if (body.functionDefinition.toString() == '=>') {
+    var gnNode = ArrowFunctionExpressionNode();
+    // TODO: 支持命名参数、可选参数
+    code.parameters?.parameters.forEach((element) {
+      gnNode.argumentList.add([element.identifier.toString()]);
+    });
+    gnNode.body.push(
+        GenericStatementNode(convertExpression(body.expression.toString())));
+    return gnNode.toSource();
+  } else {
+    throw 'error';
+  }
+}

dart2js/lib/src/covert/convertBlock.dart

@@ -0,0 +1,22 @@
+import 'package:analyzer/dart/analysis/utilities.dart';
+
+import '../visitor/SimpleFunctionGenerator.dart';
+import '../funs/shouldErrorBeIgnored.dart';
+
+String convertBlock(String code) {
+  // print("[convertBlock]" + code);
+  var res = parseString(
+      content: '''dummy() async $code''', throwIfDiagnostics: false);
+
+  if (res.errors.isNotEmpty) {
+    if (shouldErrorBeIgnored(res.errors)) {
+      // ignore
+    } else {
+      throw ArgumentError();
+    }
+  }
+
+  var generator = SimpleFunctionGenerator();
+  res.unit.visitChildren(generator);
+  return generator.func?.body.toSource() ?? '';
+}

dart2js/lib/src/covert/convertClassString.dart

@@ -0,0 +1,12 @@
+import 'package:analyzer/dart/analysis/features.dart';
+import 'package:analyzer/dart/analysis/utilities.dart';
+
+import '../visitor/ClassDeclarationVisitor.dart';
+
+String convertClassString(String content, [bool isDataBean = false]) {
+  var result =
+  parseString(content: content, featureSet: FeatureSet.fromEnableFlags([]));
+  var visitor = ClassDeclarationVisitor(isDataBean);
+  result.unit.visitChildren(visitor);
+  return visitor.genJsCode();
+}

dart2js/lib/src/covert/convertExpression.dart

@@ -0,0 +1,22 @@
+import 'convertStatements.dart';
+
+String convertExpression(String code) {
+  // print("[convertExpression]" + code);
+  var res = '';
+  var start = 0;
+  try {
+    res = convertStatements(code + ';');
+    res = res.trim();
+  } on ArgumentError {
+    // 有些表达式直接变成语句会报错，例如字典字面量对象
+    var prefix = 'var __variable__ = ';
+    res = convertStatements('''$prefix$code;''');
+    res = res.trim();
+    start = res.indexOf('=') + 1;
+  }
+  var end = res.length - 1;
+  while (end >= 0 && RegExp(r'[\s\r\n;]', multiLine: false).hasMatch(res[end])) {
+    end--;
+  }
+  return res.substring(start, end + 1);
+}

dart2js/lib/src/covert/convertFunction.dart

@@ -0,0 +1,16 @@
+import 'package:analyzer/dart/analysis/utilities.dart';
+
+import '../visitor/SimpleFunctionGenerator.dart';
+
+String convertFunction(String code,
+    {bool isArrow = false,
+      bool isClassMethod = false,
+      bool classHasStaticFields = false}) {
+  var res = parseString(content: code);
+  var generator = SimpleFunctionGenerator(isArrowFunc: isArrow);
+  res.unit.visitChildren(generator);
+  generator.func
+    ?..withContext = isClassMethod
+    ..classHasStaticFields = classHasStaticFields;
+  return generator.func?.toSource() ?? '';
+}

dart2js/lib/src/covert/convertFunctionExpression.dart

@@ -0,0 +1,6 @@
+import 'convertFunction.dart';
+
+String convertFunctionExpression(String code) {
+  code = 'dummy' + code;
+  return convertFunction(code);
+}