Angular HTML template的解析位置

TemplateParser.prototype.parse = function(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces) {
                    var result = this.tryParse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces);
                    var warnings = result.errors.filter(function(error) {
                        return error.level === exports.ParseErrorLevel.WARNING;
                    });
                    var errors = result.errors.filter(function(error) {
                        return error.level === exports.ParseErrorLevel.ERROR;
                    });
                    if (warnings.length > 0) {
                        this._console.warn("Template parse warnings:\n" + warnings.join('\n'));
                    }
                    if (errors.length > 0) {
                        var errorString = errors.join('\n');
                        throw syntaxError("Template parse errors:\n" + errorString, errors);
                    }
                    return {
                        template: result.templateAst,
                        pipes: result.usedPipes
                    };
                }