@angular/compiler
Version:
Angular - the compiler library
277 lines • 36.7 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/render3/view/i18n/meta", ["require", "exports", "tslib", "@angular/compiler/src/i18n/digest", "@angular/compiler/src/i18n/i18n_ast", "@angular/compiler/src/i18n/i18n_parser", "@angular/compiler/src/i18n/parse_util", "@angular/compiler/src/ml_parser/ast", "@angular/compiler/src/ml_parser/interpolation_config", "@angular/compiler/src/ml_parser/parser", "@angular/compiler/src/output/output_ast", "@angular/compiler/src/schema/trusted_types_sinks", "@angular/compiler/src/render3/view/i18n/util"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.i18nMetaToJSDoc = exports.parseI18nMeta = exports.I18nMetaVisitor = void 0;
var tslib_1 = require("tslib");
var digest_1 = require("@angular/compiler/src/i18n/digest");
var i18n = require("@angular/compiler/src/i18n/i18n_ast");
var i18n_parser_1 = require("@angular/compiler/src/i18n/i18n_parser");
var parse_util_1 = require("@angular/compiler/src/i18n/parse_util");
var html = require("@angular/compiler/src/ml_parser/ast");
var interpolation_config_1 = require("@angular/compiler/src/ml_parser/interpolation_config");
var parser_1 = require("@angular/compiler/src/ml_parser/parser");
var o = require("@angular/compiler/src/output/output_ast");
var trusted_types_sinks_1 = require("@angular/compiler/src/schema/trusted_types_sinks");
var util_1 = require("@angular/compiler/src/render3/view/i18n/util");
var setI18nRefs = function (htmlNode, i18nNode) {
if (htmlNode instanceof html.NodeWithI18n) {
if (i18nNode instanceof i18n.IcuPlaceholder && htmlNode.i18n instanceof i18n.Message) {
// This html node represents an ICU but this is a second processing pass, and the legacy id
// was computed in the previous pass and stored in the `i18n` property as a message.
// We are about to wipe out that property so capture the previous message to be reused when
// generating the message for this ICU later. See `_generateI18nMessage()`.
i18nNode.previousMessage = htmlNode.i18n;
}
htmlNode.i18n = i18nNode;
}
return i18nNode;
};
/**
* This visitor walks over HTML parse tree and converts information stored in
* i18n-related attributes ("i18n" and "i18n-*") into i18n meta object that is
* stored with other element's and attribute's information.
*/
var I18nMetaVisitor = /** @class */ (function () {
function I18nMetaVisitor(interpolationConfig, keepI18nAttrs, enableI18nLegacyMessageIdFormat) {
if (interpolationConfig === void 0) { interpolationConfig = interpolation_config_1.DEFAULT_INTERPOLATION_CONFIG; }
if (keepI18nAttrs === void 0) { keepI18nAttrs = false; }
if (enableI18nLegacyMessageIdFormat === void 0) { enableI18nLegacyMessageIdFormat = false; }
this.interpolationConfig = interpolationConfig;
this.keepI18nAttrs = keepI18nAttrs;
this.enableI18nLegacyMessageIdFormat = enableI18nLegacyMessageIdFormat;
// whether visited nodes contain i18n information
this.hasI18nMeta = false;
this._errors = [];
// i18n message generation factory
this._createI18nMessage = i18n_parser_1.createI18nMessageFactory(this.interpolationConfig);
}
I18nMetaVisitor.prototype._generateI18nMessage = function (nodes, meta, visitNodeFn) {
if (meta === void 0) { meta = ''; }
var _a = this._parseMetadata(meta), meaning = _a.meaning, description = _a.description, customId = _a.customId;
var message = this._createI18nMessage(nodes, meaning, description, customId, visitNodeFn);
this._setMessageId(message, meta);
this._setLegacyIds(message, meta);
return message;
};
I18nMetaVisitor.prototype.visitAllWithErrors = function (nodes) {
var _this = this;
var result = nodes.map(function (node) { return node.visit(_this, null); });
return new parser_1.ParseTreeResult(result, this._errors);
};
I18nMetaVisitor.prototype.visitElement = function (element) {
var e_1, _a, e_2, _b;
if (util_1.hasI18nAttrs(element)) {
this.hasI18nMeta = true;
var attrs = [];
var attrsMeta = {};
try {
for (var _c = tslib_1.__values(element.attrs), _d = _c.next(); !_d.done; _d = _c.next()) {
var attr = _d.value;
if (attr.name === util_1.I18N_ATTR) {
// root 'i18n' node attribute
var i18n_1 = element.i18n || attr.value;
var message = this._generateI18nMessage(element.children, i18n_1, setI18nRefs);
// do not assign empty i18n meta
if (message.nodes.length) {
element.i18n = message;
}
}
else if (attr.name.startsWith(util_1.I18N_ATTR_PREFIX)) {
// 'i18n-*' attributes
var name_1 = attr.name.slice(util_1.I18N_ATTR_PREFIX.length);
if (trusted_types_sinks_1.isTrustedTypesSink(element.name, name_1)) {
this._reportError(attr, "Translating attribute '" + name_1 + "' is disallowed for security reasons.");
}
else {
attrsMeta[name_1] = attr.value;
}
}
else {
// non-i18n attributes
attrs.push(attr);
}
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_d && !_d.done && (_a = _c.return)) _a.call(_c);
}
finally { if (e_1) throw e_1.error; }
}
// set i18n meta for attributes
if (Object.keys(attrsMeta).length) {
try {
for (var attrs_1 = tslib_1.__values(attrs), attrs_1_1 = attrs_1.next(); !attrs_1_1.done; attrs_1_1 = attrs_1.next()) {
var attr = attrs_1_1.value;
var meta = attrsMeta[attr.name];
// do not create translation for empty attributes
if (meta !== undefined && attr.value) {
attr.i18n = this._generateI18nMessage([attr], attr.i18n || meta);
}
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (attrs_1_1 && !attrs_1_1.done && (_b = attrs_1.return)) _b.call(attrs_1);
}
finally { if (e_2) throw e_2.error; }
}
}
if (!this.keepI18nAttrs) {
// update element's attributes,
// keeping only non-i18n related ones
element.attrs = attrs;
}
}
html.visitAll(this, element.children, element.i18n);
return element;
};
I18nMetaVisitor.prototype.visitExpansion = function (expansion, currentMessage) {
var message;
var meta = expansion.i18n;
this.hasI18nMeta = true;
if (meta instanceof i18n.IcuPlaceholder) {
// set ICU placeholder name (e.g. "ICU_1"),
// generated while processing root element contents,
// so we can reference it when we output translation
var name_2 = meta.name;
message = this._generateI18nMessage([expansion], meta);
var icu = util_1.icuFromI18nMessage(message);
icu.name = name_2;
}
else {
// ICU is a top level message, try to use metadata from container element if provided via
// `context` argument. Note: context may not be available for standalone ICUs (without
// wrapping element), so fallback to ICU metadata in this case.
message = this._generateI18nMessage([expansion], currentMessage || meta);
}
expansion.i18n = message;
return expansion;
};
I18nMetaVisitor.prototype.visitText = function (text) {
return text;
};
I18nMetaVisitor.prototype.visitAttribute = function (attribute) {
return attribute;
};
I18nMetaVisitor.prototype.visitComment = function (comment) {
return comment;
};
I18nMetaVisitor.prototype.visitExpansionCase = function (expansionCase) {
return expansionCase;
};
/**
* Parse the general form `meta` passed into extract the explicit metadata needed to create a
* `Message`.
*
* There are three possibilities for the `meta` variable
* 1) a string from an `i18n` template attribute: parse it to extract the metadata values.
* 2) a `Message` from a previous processing pass: reuse the metadata values in the message.
* 4) other: ignore this and just process the message metadata as normal
*
* @param meta the bucket that holds information about the message
* @returns the parsed metadata.
*/
I18nMetaVisitor.prototype._parseMetadata = function (meta) {
return typeof meta === 'string' ? parseI18nMeta(meta) :
meta instanceof i18n.Message ? meta : {};
};
/**
* Generate (or restore) message id if not specified already.
*/
I18nMetaVisitor.prototype._setMessageId = function (message, meta) {
if (!message.id) {
message.id = meta instanceof i18n.Message && meta.id || digest_1.decimalDigest(message);
}
};
/**
* Update the `message` with a `legacyId` if necessary.
*
* @param message the message whose legacy id should be set
* @param meta information about the message being processed
*/
I18nMetaVisitor.prototype._setLegacyIds = function (message, meta) {
if (this.enableI18nLegacyMessageIdFormat) {
message.legacyIds = [digest_1.computeDigest(message), digest_1.computeDecimalDigest(message)];
}
else if (typeof meta !== 'string') {
// This occurs if we are doing the 2nd pass after whitespace removal (see `parseTemplate()` in
// `packages/compiler/src/render3/view/template.ts`).
// In that case we want to reuse the legacy message generated in the 1st pass (see
// `setI18nRefs()`).
var previousMessage = meta instanceof i18n.Message ?
meta :
meta instanceof i18n.IcuPlaceholder ? meta.previousMessage : undefined;
message.legacyIds = previousMessage ? previousMessage.legacyIds : [];
}
};
I18nMetaVisitor.prototype._reportError = function (node, msg) {
this._errors.push(new parse_util_1.I18nError(node.sourceSpan, msg));
};
return I18nMetaVisitor;
}());
exports.I18nMetaVisitor = I18nMetaVisitor;
/** I18n separators for metadata **/
var I18N_MEANING_SEPARATOR = '|';
var I18N_ID_SEPARATOR = '@@';
/**
* Parses i18n metas like:
* - "@@id",
* - "description[@@id]",
* - "meaning|description[@@id]"
* and returns an object with parsed output.
*
* @param meta String that represents i18n meta
* @returns Object with id, meaning and description fields
*/
function parseI18nMeta(meta) {
var _a, _b;
if (meta === void 0) { meta = ''; }
var customId;
var meaning;
var description;
meta = meta.trim();
if (meta) {
var idIndex = meta.indexOf(I18N_ID_SEPARATOR);
var descIndex = meta.indexOf(I18N_MEANING_SEPARATOR);
var meaningAndDesc = void 0;
_a = tslib_1.__read((idIndex > -1) ? [meta.slice(0, idIndex), meta.slice(idIndex + 2)] : [meta, ''], 2), meaningAndDesc = _a[0], customId = _a[1];
_b = tslib_1.__read((descIndex > -1) ?
[meaningAndDesc.slice(0, descIndex), meaningAndDesc.slice(descIndex + 1)] :
['', meaningAndDesc], 2), meaning = _b[0], description = _b[1];
}
return { customId: customId, meaning: meaning, description: description };
}
exports.parseI18nMeta = parseI18nMeta;
// Converts i18n meta information for a message (id, description, meaning)
// to a JsDoc statement formatted as expected by the Closure compiler.
function i18nMetaToJSDoc(meta) {
var tags = [];
if (meta.description) {
tags.push({ tagName: "desc" /* Desc */, text: meta.description });
}
if (meta.meaning) {
tags.push({ tagName: "meaning" /* Meaning */, text: meta.meaning });
}
return tags.length == 0 ? null : o.jsDocComment(tags);
}
exports.i18nMetaToJSDoc = i18nMetaToJSDoc;
});
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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 {computeDecimalDigest, computeDigest, decimalDigest} from '../../../i18n/digest';\nimport * as i18n from '../../../i18n/i18n_ast';\nimport {createI18nMessageFactory, VisitNodeFn} from '../../../i18n/i18n_parser';\nimport {I18nError} from '../../../i18n/parse_util';\nimport * as html from '../../../ml_parser/ast';\nimport {DEFAULT_INTERPOLATION_CONFIG, InterpolationConfig} from '../../../ml_parser/interpolation_config';\nimport {ParseTreeResult} from '../../../ml_parser/parser';\nimport * as o from '../../../output/output_ast';\nimport {isTrustedTypesSink} from '../../../schema/trusted_types_sinks';\n\nimport {hasI18nAttrs, I18N_ATTR, I18N_ATTR_PREFIX, icuFromI18nMessage} from './util';\n\nexport type I18nMeta = {\n  id?: string,\n  customId?: string,\n  legacyIds?: string[],\n  description?: string,\n  meaning?: string\n};\n\n\nconst setI18nRefs: VisitNodeFn = (htmlNode, i18nNode) => {\n  if (htmlNode instanceof html.NodeWithI18n) {\n    if (i18nNode instanceof i18n.IcuPlaceholder && htmlNode.i18n instanceof i18n.Message) {\n      // This html node represents an ICU but this is a second processing pass, and the legacy id\n      // was computed in the previous pass and stored in the `i18n` property as a message.\n      // We are about to wipe out that property so capture the previous message to be reused when\n      // generating the message for this ICU later. See `_generateI18nMessage()`.\n      i18nNode.previousMessage = htmlNode.i18n;\n    }\n    htmlNode.i18n = i18nNode;\n  }\n  return i18nNode;\n};\n\n/**\n * This visitor walks over HTML parse tree and converts information stored in\n * i18n-related attributes (\"i18n\" and \"i18n-*\") into i18n meta object that is\n * stored with other element's and attribute's information.\n */\nexport class I18nMetaVisitor implements html.Visitor {\n  // whether visited nodes contain i18n information\n  public hasI18nMeta: boolean = false;\n  private _errors: I18nError[] = [];\n\n  // i18n message generation factory\n  private _createI18nMessage = createI18nMessageFactory(this.interpolationConfig);\n\n  constructor(\n      private interpolationConfig: InterpolationConfig = DEFAULT_INTERPOLATION_CONFIG,\n      private keepI18nAttrs = false, private enableI18nLegacyMessageIdFormat = false) {}\n\n  private _generateI18nMessage(\n      nodes: html.Node[], meta: string|i18n.I18nMeta = '',\n      visitNodeFn?: VisitNodeFn): i18n.Message {\n    const {meaning, description, customId} = this._parseMetadata(meta);\n    const message = this._createI18nMessage(nodes, meaning, description, customId, visitNodeFn);\n    this._setMessageId(message, meta);\n    this._setLegacyIds(message, meta);\n    return message;\n  }\n\n  visitAllWithErrors(nodes: html.Node[]): ParseTreeResult {\n    const result = nodes.map(node => node.visit(this, null));\n    return new ParseTreeResult(result, this._errors);\n  }\n\n  visitElement(element: html.Element): any {\n    if (hasI18nAttrs(element)) {\n      this.hasI18nMeta = true;\n      const attrs: html.Attribute[] = [];\n      const attrsMeta: {[key: string]: string} = {};\n\n      for (const attr of element.attrs) {\n        if (attr.name === I18N_ATTR) {\n          // root 'i18n' node attribute\n          const i18n = element.i18n || attr.value;\n          const message = this._generateI18nMessage(element.children, i18n, setI18nRefs);\n          // do not assign empty i18n meta\n          if (message.nodes.length) {\n            element.i18n = message;\n          }\n\n        } else if (attr.name.startsWith(I18N_ATTR_PREFIX)) {\n          // 'i18n-*' attributes\n          const name = attr.name.slice(I18N_ATTR_PREFIX.length);\n          if (isTrustedTypesSink(element.name, name)) {\n            this._reportError(\n                attr, `Translating attribute '${name}' is disallowed for security reasons.`);\n          } else {\n            attrsMeta[name] = attr.value;\n          }\n        } else {\n          // non-i18n attributes\n          attrs.push(attr);\n        }\n      }\n\n      // set i18n meta for attributes\n      if (Object.keys(attrsMeta).length) {\n        for (const attr of attrs) {\n          const meta = attrsMeta[attr.name];\n          // do not create translation for empty attributes\n          if (meta !== undefined && attr.value) {\n            attr.i18n = this._generateI18nMessage([attr], attr.i18n || meta);\n          }\n        }\n      }\n\n      if (!this.keepI18nAttrs) {\n        // update element's attributes,\n        // keeping only non-i18n related ones\n        element.attrs = attrs;\n      }\n    }\n    html.visitAll(this, element.children, element.i18n);\n    return element;\n  }\n\n  visitExpansion(expansion: html.Expansion, currentMessage: i18n.Message|undefined): any {\n    let message;\n    const meta = expansion.i18n;\n    this.hasI18nMeta = true;\n    if (meta instanceof i18n.IcuPlaceholder) {\n      // set ICU placeholder name (e.g. \"ICU_1\"),\n      // generated while processing root element contents,\n      // so we can reference it when we output translation\n      const name = meta.name;\n      message = this._generateI18nMessage([expansion], meta);\n      const icu = icuFromI18nMessage(message);\n      icu.name = name;\n    } else {\n      // ICU is a top level message, try to use metadata from container element if provided via\n      // `context` argument. Note: context may not be available for standalone ICUs (without\n      // wrapping element), so fallback to ICU metadata in this case.\n      message = this._generateI18nMessage([expansion], currentMessage || meta);\n    }\n    expansion.i18n = message;\n    return expansion;\n  }\n\n  visitText(text: html.Text): any {\n    return text;\n  }\n  visitAttribute(attribute: html.Attribute): any {\n    return attribute;\n  }\n  visitComment(comment: html.Comment): any {\n    return comment;\n  }\n  visitExpansionCase(expansionCase: html.ExpansionCase): any {\n    return expansionCase;\n  }\n\n  /**\n   * Parse the general form `meta` passed into extract the explicit metadata needed to create a\n   * `Message`.\n   *\n   * There are three possibilities for the `meta` variable\n   * 1) a string from an `i18n` template attribute: parse it to extract the metadata values.\n   * 2) a `Message` from a previous processing pass: reuse the metadata values in the message.\n   * 4) other: ignore this and just process the message metadata as normal\n   *\n   * @param meta the bucket that holds information about the message\n   * @returns the parsed metadata.\n   */\n  private _parseMetadata(meta: string|i18n.I18nMeta): I18nMeta {\n    return typeof meta === 'string' ? parseI18nMeta(meta) :\n                                      meta instanceof i18n.Message ? meta : {};\n  }\n\n  /**\n   * Generate (or restore) message id if not specified already.\n   */\n  private _setMessageId(message: i18n.Message, meta: string|i18n.I18nMeta): void {\n    if (!message.id) {\n      message.id = meta instanceof i18n.Message && meta.id || decimalDigest(message);\n    }\n  }\n\n  /**\n   * Update the `message` with a `legacyId` if necessary.\n   *\n   * @param message the message whose legacy id should be set\n   * @param meta information about the message being processed\n   */\n  private _setLegacyIds(message: i18n.Message, meta: string|i18n.I18nMeta): void {\n    if (this.enableI18nLegacyMessageIdFormat) {\n      message.legacyIds = [computeDigest(message), computeDecimalDigest(message)];\n    } else if (typeof meta !== 'string') {\n      // This occurs if we are doing the 2nd pass after whitespace removal (see `parseTemplate()` in\n      // `packages/compiler/src/render3/view/template.ts`).\n      // In that case we want to reuse the legacy message generated in the 1st pass (see\n      // `setI18nRefs()`).\n      const previousMessage = meta instanceof i18n.Message ?\n          meta :\n          meta instanceof i18n.IcuPlaceholder ? meta.previousMessage : undefined;\n      message.legacyIds = previousMessage ? previousMessage.legacyIds : [];\n    }\n  }\n\n  private _reportError(node: html.Node, msg: string): void {\n    this._errors.push(new I18nError(node.sourceSpan, msg));\n  }\n}\n\n/** I18n separators for metadata **/\nconst I18N_MEANING_SEPARATOR = '|';\nconst I18N_ID_SEPARATOR = '@@';\n\n/**\n * Parses i18n metas like:\n *  - \"@@id\",\n *  - \"description[@@id]\",\n *  - \"meaning|description[@@id]\"\n * and returns an object with parsed output.\n *\n * @param meta String that represents i18n meta\n * @returns Object with id, meaning and description fields\n */\nexport function parseI18nMeta(meta: string = ''): I18nMeta {\n  let customId: string|undefined;\n  let meaning: string|undefined;\n  let description: string|undefined;\n\n  meta = meta.trim();\n  if (meta) {\n    const idIndex = meta.indexOf(I18N_ID_SEPARATOR);\n    const descIndex = meta.indexOf(I18N_MEANING_SEPARATOR);\n    let meaningAndDesc: string;\n    [meaningAndDesc, customId] =\n        (idIndex > -1) ? 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