Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/tools/parser_generator/source.dart

+library dart_code_gen_source;
+
+import 'dart_code_gen.dart';
+
+class SourceBuilder {
+  static RegExp NON_WORDS = new RegExp(r'\W');
+
+  Map<String, Code> refs = {};
+  List<Code> codeRefs = [];
+
+  String str(String s) => '\'' +
+      s.replaceAll('\'', '\\\'')
+        .replaceAll('\n', '\\n')
+        .replaceAll(r'$', r'\$') + '\'';
+  String ident(String s) => '_${s.replaceAll(NON_WORDS, '_')}_${s.hashCode}';
+
+  String ref(Code code) {
+    if (!refs.containsKey(code.id)) {
+      refs[code.id] = code;
+      code.toSource(this); // recursively expand;
+      codeRefs.add(code);
+    }
+    return this.ident(code.id);
+  }
+
+  parens([p1, p2, p3, p4, p5, p6]) => new ParenthesisSource()..call(p1, p2, p3, p4, p5, p6);
+  body([p1, p2, p3, p4, p5, p6]) => new BodySource()..call(p1, p2, p3, p4, p5, p6);
+  stmt([p1, p2, p3, p4, p5, p6]) => new StatementSource()..call(p1, p2, p3, p4, p5, p6);
+
+  call([p1, p2, p3, p4, p5, p6]) => new Source()..call(p1, p2, p3, p4, p5, p6);
+
+}
+
+class Source {
+  static String NEW_LINE = '\n';
+  List source = [];
+
+  call([p1, p2, p3, p4, p5, p6]) {
+    if (p1 != null) source.add(p1);
+    if (p2 != null) source.add(p2);
+    if (p3 != null) source.add(p3);
+    if (p4 != null) source.add(p4);
+    if (p5 != null) source.add(p5);
+    if (p6 != null) source.add(p6);
+  }
+
+  toString([String indent='', newLine=false, sep='']) {
+    var lines = [];
+    var trailing = sep == ';';
+    var _sep = '';
+    source.forEach((s) {
+      if (!trailing) lines.add(_sep);
+      if (newLine) lines.add('\n' + indent);
+      if (s is Source) {
+        lines.add(s.toString(indent));
+      } else {
+        lines.add(s);
+      }
+      _sep = sep;
+      if (trailing) lines.add(_sep);
+    });
+    return lines.join('');
+  }
+}
+
+
+class ParenthesisSource extends Source {
+  toString([String indent='', newLine=false, sep='']) {
+    return '(' + super.toString(indent + '  ', true, ',') + ')';
+  }
+}
+
+class MapSource extends Source {
+  toString([String indent='', newLine=false, sep='']) {
+    return '{' + super.toString(indent + '  ', true, ',') + '}';
+  }
+}
+
+class BodySource extends Source {
+  BodySource() {
+    //this('');
+  }
+  toString([String indent='', newLine=false, sep='']) {
+    return '{${super.toString(indent + '  ', true)}\n$indent}';
+  }
+}
+
+class StatementSource extends Source {
+  toString([String indent='', newLine=false, sep='']) {
+    return '${super.toString(indent + '  ')};';
+  }
+}