@angular/compiler
Version:
Angular - the compiler library
108 lines • 13.8 kB
JavaScript
/**
* @license
* Copyright Google Inc. 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
*/
var TAG_TO_PLACEHOLDER_NAMES = {
'A': 'LINK',
'B': 'BOLD_TEXT',
'BR': 'LINE_BREAK',
'EM': 'EMPHASISED_TEXT',
'H1': 'HEADING_LEVEL1',
'H2': 'HEADING_LEVEL2',
'H3': 'HEADING_LEVEL3',
'H4': 'HEADING_LEVEL4',
'H5': 'HEADING_LEVEL5',
'H6': 'HEADING_LEVEL6',
'HR': 'HORIZONTAL_RULE',
'I': 'ITALIC_TEXT',
'LI': 'LIST_ITEM',
'LINK': 'MEDIA_LINK',
'OL': 'ORDERED_LIST',
'P': 'PARAGRAPH',
'Q': 'QUOTATION',
'S': 'STRIKETHROUGH_TEXT',
'SMALL': 'SMALL_TEXT',
'SUB': 'SUBSTRIPT',
'SUP': 'SUPERSCRIPT',
'TBODY': 'TABLE_BODY',
'TD': 'TABLE_CELL',
'TFOOT': 'TABLE_FOOTER',
'TH': 'TABLE_HEADER_CELL',
'THEAD': 'TABLE_HEADER',
'TR': 'TABLE_ROW',
'TT': 'MONOSPACED_TEXT',
'U': 'UNDERLINED_TEXT',
'UL': 'UNORDERED_LIST',
};
/**
* Creates unique names for placeholder with different content.
*
* Returns the same placeholder name when the content is identical.
*/
var PlaceholderRegistry = /** @class */ (function () {
function PlaceholderRegistry() {
// Count the occurrence of the base name top generate a unique name
this._placeHolderNameCounts = {};
// Maps signature to placeholder names
this._signatureToName = {};
}
PlaceholderRegistry.prototype.getStartTagPlaceholderName = function (tag, attrs, isVoid) {
var signature = this._hashTag(tag, attrs, isVoid);
if (this._signatureToName[signature]) {
return this._signatureToName[signature];
}
var upperTag = tag.toUpperCase();
var baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || "TAG_" + upperTag;
var name = this._generateUniqueName(isVoid ? baseName : "START_" + baseName);
this._signatureToName[signature] = name;
return name;
};
PlaceholderRegistry.prototype.getCloseTagPlaceholderName = function (tag) {
var signature = this._hashClosingTag(tag);
if (this._signatureToName[signature]) {
return this._signatureToName[signature];
}
var upperTag = tag.toUpperCase();
var baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || "TAG_" + upperTag;
var name = this._generateUniqueName("CLOSE_" + baseName);
this._signatureToName[signature] = name;
return name;
};
PlaceholderRegistry.prototype.getPlaceholderName = function (name, content) {
var upperName = name.toUpperCase();
var signature = "PH: " + upperName + "=" + content;
if (this._signatureToName[signature]) {
return this._signatureToName[signature];
}
var uniqueName = this._generateUniqueName(upperName);
this._signatureToName[signature] = uniqueName;
return uniqueName;
};
PlaceholderRegistry.prototype.getUniquePlaceholder = function (name) {
return this._generateUniqueName(name.toUpperCase());
};
// Generate a hash for a tag - does not take attribute order into account
PlaceholderRegistry.prototype._hashTag = function (tag, attrs, isVoid) {
var start = "<" + tag;
var strAttrs = Object.keys(attrs).sort().map(function (name) { return " " + name + "=" + attrs[name]; }).join('');
var end = isVoid ? '/>' : "></" + tag + ">";
return start + strAttrs + end;
};
PlaceholderRegistry.prototype._hashClosingTag = function (tag) { return this._hashTag("/" + tag, {}, false); };
PlaceholderRegistry.prototype._generateUniqueName = function (base) {
var seen = this._placeHolderNameCounts.hasOwnProperty(base);
if (!seen) {
this._placeHolderNameCounts[base] = 1;
return base;
}
var id = this._placeHolderNameCounts[base];
this._placeHolderNameCounts[base] = id + 1;
return base + "_" + id;
};
return PlaceholderRegistry;
}());
export { PlaceholderRegistry };
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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\nconst TAG_TO_PLACEHOLDER_NAMES: {[k: string]: string} = {\n  'A': 'LINK',\n  'B': 'BOLD_TEXT',\n  'BR': 'LINE_BREAK',\n  'EM': 'EMPHASISED_TEXT',\n  'H1': 'HEADING_LEVEL1',\n  'H2': 'HEADING_LEVEL2',\n  'H3': 'HEADING_LEVEL3',\n  'H4': 'HEADING_LEVEL4',\n  'H5': 'HEADING_LEVEL5',\n  'H6': 'HEADING_LEVEL6',\n  'HR': 'HORIZONTAL_RULE',\n  'I': 'ITALIC_TEXT',\n  'LI': 'LIST_ITEM',\n  'LINK': 'MEDIA_LINK',\n  'OL': 'ORDERED_LIST',\n  'P': 'PARAGRAPH',\n  'Q': 'QUOTATION',\n  'S': 'STRIKETHROUGH_TEXT',\n  'SMALL': 'SMALL_TEXT',\n  'SUB': 'SUBSTRIPT',\n  'SUP': 'SUPERSCRIPT',\n  'TBODY': 'TABLE_BODY',\n  'TD': 'TABLE_CELL',\n  'TFOOT': 'TABLE_FOOTER',\n  'TH': 'TABLE_HEADER_CELL',\n  'THEAD': 'TABLE_HEADER',\n  'TR': 'TABLE_ROW',\n  'TT': 'MONOSPACED_TEXT',\n  'U': 'UNDERLINED_TEXT',\n  'UL': 'UNORDERED_LIST',\n};\n\n/**\n * Creates unique names for placeholder with different content.\n *\n * Returns the same placeholder name when the content is identical.\n */\nexport class PlaceholderRegistry {\n  // Count the occurrence of the base name top generate a unique name\n  private _placeHolderNameCounts: {[k: string]: number} = {};\n  // Maps signature to placeholder names\n  private _signatureToName: {[k: string]: string} = {};\n\n  getStartTagPlaceholderName(tag: string, attrs: {[k: string]: string}, isVoid: boolean): string {\n    const signature = this._hashTag(tag, attrs, isVoid);\n    if (this._signatureToName[signature]) {\n      return this._signatureToName[signature];\n    }\n\n    const upperTag = tag.toUpperCase();\n    const baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || `TAG_${upperTag}`;\n    const name = this._generateUniqueName(isVoid ? baseName : `START_${baseName}`);\n\n    this._signatureToName[signature] = name;\n\n    return name;\n  }\n\n  getCloseTagPlaceholderName(tag: string): string {\n    const signature = this._hashClosingTag(tag);\n    if (this._signatureToName[signature]) {\n      return this._signatureToName[signature];\n    }\n\n    const upperTag = tag.toUpperCase();\n    const baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || `TAG_${upperTag}`;\n    const name = this._generateUniqueName(`CLOSE_${baseName}`);\n\n    this._signatureToName[signature] = name;\n\n    return name;\n  }\n\n  getPlaceholderName(name: string, content: string): string {\n    const upperName = name.toUpperCase();\n    const signature = `PH: ${upperName}=${content}`;\n    if (this._signatureToName[signature]) {\n      return this._signatureToName[signature];\n    }\n\n    const uniqueName = this._generateUniqueName(upperName);\n    this._signatureToName[signature] = uniqueName;\n\n    return uniqueName;\n  }\n\n  getUniquePlaceholder(name: string): string {\n    return this._generateUniqueName(name.toUpperCase());\n  }\n\n  // Generate a hash for a tag - does not take attribute order into account\n  private _hashTag(tag: string, attrs: {[k: string]: string}, isVoid: boolean): string {\n    const start = `<${tag}`;\n    const strAttrs = Object.keys(attrs).sort().map((name) => ` ${name}=${attrs[name]}`).join('');\n    const end = isVoid ? '/>' : `></${tag}>`;\n\n    return start + strAttrs + end;\n  }\n\n  private _hashClosingTag(tag: string): string { return this._hashTag(`/${tag}`, {}, false); }\n\n  private _generateUniqueName(base: string): string {\n    const seen = this._placeHolderNameCounts.hasOwnProperty(base);\n    if (!seen) {\n      this._placeHolderNameCounts[base] = 1;\n      return base;\n    }\n\n    const id = this._placeHolderNameCounts[base];\n    this._placeHolderNameCounts[base] = id + 1;\n    return `${base}_${id}`;\n  }\n}\n"]}