@angular/compiler
Version:
Angular - the compiler library
201 lines • 22.9 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define("@angular/compiler/src/ml_parser/ast", ["require", "exports", "tslib", "@angular/compiler/src/ast_path"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.findNode = exports.RecursiveVisitor = exports.visitAll = exports.Comment = exports.Element = exports.Attribute = exports.ExpansionCase = exports.Expansion = exports.Text = exports.NodeWithI18n = void 0;
var tslib_1 = require("tslib");
var ast_path_1 = require("@angular/compiler/src/ast_path");
var NodeWithI18n = /** @class */ (function () {
function NodeWithI18n(sourceSpan, i18n) {
this.sourceSpan = sourceSpan;
this.i18n = i18n;
}
return NodeWithI18n;
}());
exports.NodeWithI18n = NodeWithI18n;
var Text = /** @class */ (function (_super) {
tslib_1.__extends(Text, _super);
function Text(value, sourceSpan, i18n) {
var _this = _super.call(this, sourceSpan, i18n) || this;
_this.value = value;
return _this;
}
Text.prototype.visit = function (visitor, context) {
return visitor.visitText(this, context);
};
return Text;
}(NodeWithI18n));
exports.Text = Text;
var Expansion = /** @class */ (function (_super) {
tslib_1.__extends(Expansion, _super);
function Expansion(switchValue, type, cases, sourceSpan, switchValueSourceSpan, i18n) {
var _this = _super.call(this, sourceSpan, i18n) || this;
_this.switchValue = switchValue;
_this.type = type;
_this.cases = cases;
_this.switchValueSourceSpan = switchValueSourceSpan;
return _this;
}
Expansion.prototype.visit = function (visitor, context) {
return visitor.visitExpansion(this, context);
};
return Expansion;
}(NodeWithI18n));
exports.Expansion = Expansion;
var ExpansionCase = /** @class */ (function () {
function ExpansionCase(value, expression, sourceSpan, valueSourceSpan, expSourceSpan) {
this.value = value;
this.expression = expression;
this.sourceSpan = sourceSpan;
this.valueSourceSpan = valueSourceSpan;
this.expSourceSpan = expSourceSpan;
}
ExpansionCase.prototype.visit = function (visitor, context) {
return visitor.visitExpansionCase(this, context);
};
return ExpansionCase;
}());
exports.ExpansionCase = ExpansionCase;
var Attribute = /** @class */ (function (_super) {
tslib_1.__extends(Attribute, _super);
function Attribute(name, value, sourceSpan, keySpan, valueSpan, i18n) {
var _this = _super.call(this, sourceSpan, i18n) || this;
_this.name = name;
_this.value = value;
_this.keySpan = keySpan;
_this.valueSpan = valueSpan;
return _this;
}
Attribute.prototype.visit = function (visitor, context) {
return visitor.visitAttribute(this, context);
};
return Attribute;
}(NodeWithI18n));
exports.Attribute = Attribute;
var Element = /** @class */ (function (_super) {
tslib_1.__extends(Element, _super);
function Element(name, attrs, children, sourceSpan, startSourceSpan, endSourceSpan, i18n) {
if (endSourceSpan === void 0) { endSourceSpan = null; }
var _this = _super.call(this, sourceSpan, i18n) || this;
_this.name = name;
_this.attrs = attrs;
_this.children = children;
_this.startSourceSpan = startSourceSpan;
_this.endSourceSpan = endSourceSpan;
return _this;
}
Element.prototype.visit = function (visitor, context) {
return visitor.visitElement(this, context);
};
return Element;
}(NodeWithI18n));
exports.Element = Element;
var Comment = /** @class */ (function () {
function Comment(value, sourceSpan) {
this.value = value;
this.sourceSpan = sourceSpan;
}
Comment.prototype.visit = function (visitor, context) {
return visitor.visitComment(this, context);
};
return Comment;
}());
exports.Comment = Comment;
function visitAll(visitor, nodes, context) {
if (context === void 0) { context = null; }
var result = [];
var visit = visitor.visit ?
function (ast) { return visitor.visit(ast, context) || ast.visit(visitor, context); } :
function (ast) { return ast.visit(visitor, context); };
nodes.forEach(function (ast) {
var astResult = visit(ast);
if (astResult) {
result.push(astResult);
}
});
return result;
}
exports.visitAll = visitAll;
var RecursiveVisitor = /** @class */ (function () {
function RecursiveVisitor() {
}
RecursiveVisitor.prototype.visitElement = function (ast, context) {
this.visitChildren(context, function (visit) {
visit(ast.attrs);
visit(ast.children);
});
};
RecursiveVisitor.prototype.visitAttribute = function (ast, context) { };
RecursiveVisitor.prototype.visitText = function (ast, context) { };
RecursiveVisitor.prototype.visitComment = function (ast, context) { };
RecursiveVisitor.prototype.visitExpansion = function (ast, context) {
return this.visitChildren(context, function (visit) {
visit(ast.cases);
});
};
RecursiveVisitor.prototype.visitExpansionCase = function (ast, context) { };
RecursiveVisitor.prototype.visitChildren = function (context, cb) {
var results = [];
var t = this;
function visit(children) {
if (children)
results.push(visitAll(t, children, context));
}
cb(visit);
return Array.prototype.concat.apply([], results);
};
return RecursiveVisitor;
}());
exports.RecursiveVisitor = RecursiveVisitor;
function spanOf(ast) {
var start = ast.sourceSpan.start.offset;
var end = ast.sourceSpan.end.offset;
if (ast instanceof Element) {
if (ast.endSourceSpan) {
end = ast.endSourceSpan.end.offset;
}
else if (ast.children && ast.children.length) {
end = spanOf(ast.children[ast.children.length - 1]).end;
}
}
return { start: start, end: end };
}
function findNode(nodes, position) {
var path = [];
var visitor = new /** @class */ (function (_super) {
tslib_1.__extends(class_1, _super);
function class_1() {
return _super !== null && _super.apply(this, arguments) || this;
}
class_1.prototype.visit = function (ast, context) {
var span = spanOf(ast);
if (span.start <= position && position < span.end) {
path.push(ast);
}
else {
// Returning a value here will result in the children being skipped.
return true;
}
};
return class_1;
}(RecursiveVisitor));
visitAll(visitor, nodes);
return new ast_path_1.AstPath(path, position);
}
exports.findNode = findNode;
});
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {AstPath} from '../ast_path';\nimport {I18nMeta} from '../i18n/i18n_ast';\nimport {ParseSourceSpan} from '../parse_util';\n\ninterface BaseNode {\n  sourceSpan: ParseSourceSpan;\n  visit(visitor: Visitor, context: any): any;\n}\n\nexport type Node = Attribute|Comment|Element|Expansion|ExpansionCase|Text;\n\nexport abstract class NodeWithI18n implements BaseNode {\n  constructor(public sourceSpan: ParseSourceSpan, public i18n?: I18nMeta) {}\n  abstract visit(visitor: Visitor, context: any): any;\n}\n\nexport class Text extends NodeWithI18n {\n  constructor(public value: string, sourceSpan: ParseSourceSpan, i18n?: I18nMeta) {\n    super(sourceSpan, i18n);\n  }\n  override visit(visitor: Visitor, context: any): any {\n    return visitor.visitText(this, context);\n  }\n}\n\nexport class Expansion extends NodeWithI18n {\n  constructor(\n      public switchValue: string, public type: string, public cases: ExpansionCase[],\n      sourceSpan: ParseSourceSpan, public switchValueSourceSpan: ParseSourceSpan, i18n?: I18nMeta) {\n    super(sourceSpan, i18n);\n  }\n  override visit(visitor: Visitor, context: any): any {\n    return visitor.visitExpansion(this, context);\n  }\n}\n\nexport class ExpansionCase implements BaseNode {\n  constructor(\n      public value: string, public expression: Node[], public sourceSpan: ParseSourceSpan,\n      public valueSourceSpan: ParseSourceSpan, public expSourceSpan: ParseSourceSpan) {}\n\n  visit(visitor: Visitor, context: any): any {\n    return visitor.visitExpansionCase(this, context);\n  }\n}\n\nexport class Attribute extends NodeWithI18n {\n  constructor(\n      public name: string, public value: string, sourceSpan: ParseSourceSpan,\n      readonly keySpan: ParseSourceSpan|undefined, public valueSpan?: ParseSourceSpan,\n      i18n?: I18nMeta) {\n    super(sourceSpan, i18n);\n  }\n  override visit(visitor: Visitor, context: any): any {\n    return visitor.visitAttribute(this, context);\n  }\n}\n\nexport class Element extends NodeWithI18n {\n  constructor(\n      public name: string, public attrs: Attribute[], public children: Node[],\n      sourceSpan: ParseSourceSpan, public startSourceSpan: ParseSourceSpan,\n      public endSourceSpan: ParseSourceSpan|null = null, i18n?: I18nMeta) {\n    super(sourceSpan, i18n);\n  }\n  override visit(visitor: Visitor, context: any): any {\n    return visitor.visitElement(this, context);\n  }\n}\n\nexport class Comment implements BaseNode {\n  constructor(public value: string|null, public sourceSpan: ParseSourceSpan) {}\n  visit(visitor: Visitor, context: any): any {\n    return visitor.visitComment(this, context);\n  }\n}\n\nexport interface Visitor {\n  // Returning a truthy value from `visit()` will prevent `visitAll()` from the call to the typed\n  // method and result returned will become the result included in `visitAll()`s result array.\n  visit?(node: Node, context: any): any;\n\n  visitElement(element: Element, context: any): any;\n  visitAttribute(attribute: Attribute, context: any): any;\n  visitText(text: Text, context: any): any;\n  visitComment(comment: Comment, context: any): any;\n  visitExpansion(expansion: Expansion, context: any): any;\n  visitExpansionCase(expansionCase: ExpansionCase, context: any): any;\n}\n\nexport function visitAll(visitor: Visitor, nodes: Node[], context: any = null): any[] {\n  const result: any[] = [];\n\n  const visit = visitor.visit ?\n      (ast: Node) => visitor.visit!(ast, context) || ast.visit(visitor, context) :\n      (ast: Node) => ast.visit(visitor, context);\n  nodes.forEach(ast => {\n    const astResult = visit(ast);\n    if (astResult) {\n      result.push(astResult);\n    }\n  });\n  return result;\n}\n\nexport class RecursiveVisitor implements Visitor {\n  constructor() {}\n\n  visitElement(ast: Element, context: any): any {\n    this.visitChildren(context, visit => {\n      visit(ast.attrs);\n      visit(ast.children);\n    });\n  }\n\n  visitAttribute(ast: Attribute, context: any): any {}\n  visitText(ast: Text, context: any): any {}\n  visitComment(ast: Comment, context: any): any {}\n\n  visitExpansion(ast: Expansion, context: any): any {\n    return this.visitChildren(context, visit => {\n      visit(ast.cases);\n    });\n  }\n\n  visitExpansionCase(ast: ExpansionCase, context: any): any {}\n\n  private visitChildren<T extends Node>(\n      context: any, cb: (visit: (<V extends Node>(children: V[]|undefined) => void)) => void) {\n    let results: any[][] = [];\n    let t = this;\n    function visit<T extends Node>(children: T[]|undefined) {\n      if (children) results.push(visitAll(t, children, context));\n    }\n    cb(visit);\n    return Array.prototype.concat.apply([], results);\n  }\n}\n\nexport type HtmlAstPath = AstPath<Node>;\n\nfunction spanOf(ast: Node) {\n  const start = ast.sourceSpan.start.offset;\n  let end = ast.sourceSpan.end.offset;\n  if (ast instanceof Element) {\n    if (ast.endSourceSpan) {\n      end = ast.endSourceSpan.end.offset;\n    } else if (ast.children && ast.children.length) {\n      end = spanOf(ast.children[ast.children.length - 1]).end;\n    }\n  }\n  return {start, end};\n}\n\nexport function findNode(nodes: Node[], position: number): HtmlAstPath {\n  const path: Node[] = [];\n\n  const visitor = new class extends RecursiveVisitor {\n    visit(ast: Node, context: any): any {\n      const span = spanOf(ast);\n      if (span.start <= position && position < span.end) {\n        path.push(ast);\n      } else {\n        // Returning a value here will result in the children being skipped.\n        return true;\n      }\n    }\n  };\n\n  visitAll(visitor, nodes);\n\n  return new AstPath<Node>(path, position);\n}\n"]}