angular_ast 0.4.4

Parser and utilities for AngularDart templates

angular_ast

Parser and utilities for AngularDart templates.

This package is platform agnostic (no HTML or Dart VM dependencies).

Usage

Currently in development and not stable.

import 'package:angular_ast/angular_ast.dart';

main() {
  // Create an AST tree by parsing an AngularDart template.
  var tree = parse('<button [title]="someTitle">Hello</button>');

  // Print to console.
  print(tree);

  // Output:
  // [
  //    ElementAst <button> {
  //      properties=
  //        PropertyAst {
  //          title="ExpressionAst {someTitle}"}
  //          childNodes=TextAst {Hello}
  //      }
  //    }
  // ]
}

Additional flags can be passed to change the behavior of the parser: String sourceUrl: String describing the path of the HTML string. bool desugar: (Default: true) Enabled desugaring of banana-syntax, star syntax, and pipes. bool parseExpressions: (Default: true) Parses Dart expressions raises exceptions if occurred. ExceptionHandler exceptionHandler: (Default: ThrowingExceptionHandler) Switch to 'new RecoveringExceptionHandler()' to enable error recovery.

When using RecoveringExceptionHandler, the accumulated exceptions can be accessed through the RecoveringExceptionHandler object. Refer to the following example: void parse(String content, String sourceUrl) { var exceptionHandler = new RecoveringExceptionHandler(); var asts = parse( content, sourceUrl: sourceUrl, desugar: false, parseExpressions: false, exceptionHandler: exceptionHandler, ); for (AngularParserException e in exceptionHandler.exceptions) { // Do something with exception. } }