@angular/compiler
Version:
Angular - the compiler library
298 lines • 40.2 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
*/
import { utf8Encode } from '../util';
export function digest(message) {
return message.id || sha1(serializeNodes(message.nodes).join('') + `[${message.meaning}]`);
}
export function decimalDigest(message) {
if (message.id) {
return message.id;
}
const visitor = new _SerializerIgnoreIcuExpVisitor();
const parts = message.nodes.map(a => a.visit(visitor, null));
return computeMsgId(parts.join(''), message.meaning);
}
/**
* Serialize the i18n ast to something xml-like in order to generate an UID.
*
* The visitor is also used in the i18n parser tests
*
* @internal
*/
class _SerializerVisitor {
visitText(text, context) { return text.value; }
visitContainer(container, context) {
return `[${container.children.map(child => child.visit(this)).join(', ')}]`;
}
visitIcu(icu, context) {
const strCases = Object.keys(icu.cases).map((k) => `${k} {${icu.cases[k].visit(this)}}`);
return `{${icu.expression}, ${icu.type}, ${strCases.join(', ')}}`;
}
visitTagPlaceholder(ph, context) {
return ph.isVoid ?
`<ph tag name="${ph.startName}"/>` :
`<ph tag name="${ph.startName}">${ph.children.map(child => child.visit(this)).join(', ')}</ph name="${ph.closeName}">`;
}
visitPlaceholder(ph, context) {
return ph.value ? `<ph name="${ph.name}">${ph.value}</ph>` : `<ph name="${ph.name}"/>`;
}
visitIcuPlaceholder(ph, context) {
return `<ph icu name="${ph.name}">${ph.value.visit(this)}</ph>`;
}
}
const serializerVisitor = new _SerializerVisitor();
export function serializeNodes(nodes) {
return nodes.map(a => a.visit(serializerVisitor, null));
}
/**
* Serialize the i18n ast to something xml-like in order to generate an UID.
*
* Ignore the ICU expressions so that message IDs stays identical if only the expression changes.
*
* @internal
*/
class _SerializerIgnoreIcuExpVisitor extends _SerializerVisitor {
visitIcu(icu, context) {
let strCases = Object.keys(icu.cases).map((k) => `${k} {${icu.cases[k].visit(this)}}`);
// Do not take the expression into account
return `{${icu.type}, ${strCases.join(', ')}}`;
}
}
/**
* Compute the SHA1 of the given string
*
* see http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
*
* WARNING: this function has not been designed not tested with security in mind.
* DO NOT USE IT IN A SECURITY SENSITIVE CONTEXT.
*/
export function sha1(str) {
const utf8 = utf8Encode(str);
const words32 = stringToWords32(utf8, Endian.Big);
const len = utf8.length * 8;
const w = new Array(80);
let [a, b, c, d, e] = [0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0];
words32[len >> 5] |= 0x80 << (24 - len % 32);
words32[((len + 64 >> 9) << 4) + 15] = len;
for (let i = 0; i < words32.length; i += 16) {
const [h0, h1, h2, h3, h4] = [a, b, c, d, e];
for (let j = 0; j < 80; j++) {
if (j < 16) {
w[j] = words32[i + j];
}
else {
w[j] = rol32(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
}
const [f, k] = fk(j, b, c, d);
const temp = [rol32(a, 5), f, e, k, w[j]].reduce(add32);
[e, d, c, b, a] = [d, c, rol32(b, 30), a, temp];
}
[a, b, c, d, e] = [add32(a, h0), add32(b, h1), add32(c, h2), add32(d, h3), add32(e, h4)];
}
return byteStringToHexString(words32ToByteString([a, b, c, d, e]));
}
function fk(index, b, c, d) {
if (index < 20) {
return [(b & c) | (~b & d), 0x5a827999];
}
if (index < 40) {
return [b ^ c ^ d, 0x6ed9eba1];
}
if (index < 60) {
return [(b & c) | (b & d) | (c & d), 0x8f1bbcdc];
}
return [b ^ c ^ d, 0xca62c1d6];
}
/**
* Compute the fingerprint of the given string
*
* The output is 64 bit number encoded as a decimal string
*
* based on:
* https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/GoogleJsMessageIdGenerator.java
*/
export function fingerprint(str) {
const utf8 = utf8Encode(str);
let [hi, lo] = [hash32(utf8, 0), hash32(utf8, 102072)];
if (hi == 0 && (lo == 0 || lo == 1)) {
hi = hi ^ 0x130f9bef;
lo = lo ^ -0x6b5f56d8;
}
return [hi, lo];
}
export function computeMsgId(msg, meaning) {
let [hi, lo] = fingerprint(msg);
if (meaning) {
const [him, lom] = fingerprint(meaning);
[hi, lo] = add64(rol64([hi, lo], 1), [him, lom]);
}
return byteStringToDecString(words32ToByteString([hi & 0x7fffffff, lo]));
}
function hash32(str, c) {
let [a, b] = [0x9e3779b9, 0x9e3779b9];
let i;
const len = str.length;
for (i = 0; i + 12 <= len; i += 12) {
a = add32(a, wordAt(str, i, Endian.Little));
b = add32(b, wordAt(str, i + 4, Endian.Little));
c = add32(c, wordAt(str, i + 8, Endian.Little));
[a, b, c] = mix([a, b, c]);
}
a = add32(a, wordAt(str, i, Endian.Little));
b = add32(b, wordAt(str, i + 4, Endian.Little));
// the first byte of c is reserved for the length
c = add32(c, len);
c = add32(c, wordAt(str, i + 8, Endian.Little) << 8);
return mix([a, b, c])[2];
}
// clang-format off
function mix([a, b, c]) {
a = sub32(a, b);
a = sub32(a, c);
a ^= c >>> 13;
b = sub32(b, c);
b = sub32(b, a);
b ^= a << 8;
c = sub32(c, a);
c = sub32(c, b);
c ^= b >>> 13;
a = sub32(a, b);
a = sub32(a, c);
a ^= c >>> 12;
b = sub32(b, c);
b = sub32(b, a);
b ^= a << 16;
c = sub32(c, a);
c = sub32(c, b);
c ^= b >>> 5;
a = sub32(a, b);
a = sub32(a, c);
a ^= c >>> 3;
b = sub32(b, c);
b = sub32(b, a);
b ^= a << 10;
c = sub32(c, a);
c = sub32(c, b);
c ^= b >>> 15;
return [a, b, c];
}
// clang-format on
// Utils
var Endian;
(function (Endian) {
Endian[Endian["Little"] = 0] = "Little";
Endian[Endian["Big"] = 1] = "Big";
})(Endian || (Endian = {}));
function add32(a, b) {
return add32to64(a, b)[1];
}
function add32to64(a, b) {
const low = (a & 0xffff) + (b & 0xffff);
const high = (a >>> 16) + (b >>> 16) + (low >>> 16);
return [high >>> 16, (high << 16) | (low & 0xffff)];
}
function add64([ah, al], [bh, bl]) {
const [carry, l] = add32to64(al, bl);
const h = add32(add32(ah, bh), carry);
return [h, l];
}
function sub32(a, b) {
const low = (a & 0xffff) - (b & 0xffff);
const high = (a >> 16) - (b >> 16) + (low >> 16);
return (high << 16) | (low & 0xffff);
}
// Rotate a 32b number left `count` position
function rol32(a, count) {
return (a << count) | (a >>> (32 - count));
}
// Rotate a 64b number left `count` position
function rol64([hi, lo], count) {
const h = (hi << count) | (lo >>> (32 - count));
const l = (lo << count) | (hi >>> (32 - count));
return [h, l];
}
function stringToWords32(str, endian) {
const words32 = Array((str.length + 3) >>> 2);
for (let i = 0; i < words32.length; i++) {
words32[i] = wordAt(str, i * 4, endian);
}
return words32;
}
function byteAt(str, index) {
return index >= str.length ? 0 : str.charCodeAt(index) & 0xff;
}
function wordAt(str, index, endian) {
let word = 0;
if (endian === Endian.Big) {
for (let i = 0; i < 4; i++) {
word += byteAt(str, index + i) << (24 - 8 * i);
}
}
else {
for (let i = 0; i < 4; i++) {
word += byteAt(str, index + i) << 8 * i;
}
}
return word;
}
function words32ToByteString(words32) {
return words32.reduce((str, word) => str + word32ToByteString(word), '');
}
function word32ToByteString(word) {
let str = '';
for (let i = 0; i < 4; i++) {
str += String.fromCharCode((word >>> 8 * (3 - i)) & 0xff);
}
return str;
}
function byteStringToHexString(str) {
let hex = '';
for (let i = 0; i < str.length; i++) {
const b = byteAt(str, i);
hex += (b >>> 4).toString(16) + (b & 0x0f).toString(16);
}
return hex.toLowerCase();
}
// based on http://www.danvk.org/hex2dec.html (JS can not handle more than 56b)
function byteStringToDecString(str) {
let decimal = '';
let toThePower = '1';
for (let i = str.length - 1; i >= 0; i--) {
decimal = addBigInt(decimal, numberTimesBigInt(byteAt(str, i), toThePower));
toThePower = numberTimesBigInt(256, toThePower);
}
return decimal.split('').reverse().join('');
}
// x and y decimal, lowest significant digit first
function addBigInt(x, y) {
let sum = '';
const len = Math.max(x.length, y.length);
for (let i = 0, carry = 0; i < len || carry; i++) {
const tmpSum = carry + +(x[i] || 0) + +(y[i] || 0);
if (tmpSum >= 10) {
carry = 1;
sum += tmpSum - 10;
}
else {
carry = 0;
sum += tmpSum;
}
}
return sum;
}
function numberTimesBigInt(num, b) {
let product = '';
let bToThePower = b;
for (; num !== 0; num = num >>> 1) {
if (num & 1)
product = addBigInt(product, bToThePower);
bToThePower = addBigInt(bToThePower, bToThePower);
}
return product;
}
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* @license\n * Copyright Google Inc. 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 {utf8Encode} from '../util';\n\nimport * as i18n from './i18n_ast';\n\nexport function digest(message: i18n.Message): string {\n  return message.id || sha1(serializeNodes(message.nodes).join('') + `[${message.meaning}]`);\n}\n\nexport function decimalDigest(message: i18n.Message): string {\n  if (message.id) {\n    return message.id;\n  }\n\n  const visitor = new _SerializerIgnoreIcuExpVisitor();\n  const parts = message.nodes.map(a => a.visit(visitor, null));\n  return computeMsgId(parts.join(''), message.meaning);\n}\n\n/**\n * Serialize the i18n ast to something xml-like in order to generate an UID.\n *\n * The visitor is also used in the i18n parser tests\n *\n * @internal\n */\nclass _SerializerVisitor implements i18n.Visitor {\n  visitText(text: i18n.Text, context: any): any { return text.value; }\n\n  visitContainer(container: i18n.Container, context: any): any {\n    return `[${container.children.map(child => child.visit(this)).join(', ')}]`;\n  }\n\n  visitIcu(icu: i18n.Icu, context: any): any {\n    const strCases =\n        Object.keys(icu.cases).map((k: string) => `${k} {${icu.cases[k].visit(this)}}`);\n    return `{${icu.expression}, ${icu.type}, ${strCases.join(', ')}}`;\n  }\n\n  visitTagPlaceholder(ph: i18n.TagPlaceholder, context: any): any {\n    return ph.isVoid ?\n        `<ph tag name=\"${ph.startName}\"/>` :\n        `<ph tag name=\"${ph.startName}\">${ph.children.map(child => child.visit(this)).join(', ')}</ph name=\"${ph.closeName}\">`;\n  }\n\n  visitPlaceholder(ph: i18n.Placeholder, context: any): any {\n    return ph.value ? `<ph name=\"${ph.name}\">${ph.value}</ph>` : `<ph name=\"${ph.name}\"/>`;\n  }\n\n  visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): any {\n    return `<ph icu name=\"${ph.name}\">${ph.value.visit(this)}</ph>`;\n  }\n}\n\nconst serializerVisitor = new _SerializerVisitor();\n\nexport function serializeNodes(nodes: i18n.Node[]): string[] {\n  return nodes.map(a => a.visit(serializerVisitor, null));\n}\n\n/**\n * Serialize the i18n ast to something xml-like in order to generate an UID.\n *\n * Ignore the ICU expressions so that message IDs stays identical if only the expression changes.\n *\n * @internal\n */\nclass _SerializerIgnoreIcuExpVisitor extends _SerializerVisitor {\n  visitIcu(icu: i18n.Icu, context: any): any {\n    let strCases = Object.keys(icu.cases).map((k: string) => `${k} {${icu.cases[k].visit(this)}}`);\n    // Do not take the expression into account\n    return `{${icu.type}, ${strCases.join(', ')}}`;\n  }\n}\n\n/**\n * Compute the SHA1 of the given string\n *\n * see http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf\n *\n * WARNING: this function has not been designed not tested with security in mind.\n *          DO NOT USE IT IN A SECURITY SENSITIVE CONTEXT.\n */\nexport function sha1(str: string): string {\n  const utf8 = utf8Encode(str);\n  const words32 = stringToWords32(utf8, Endian.Big);\n  const len = utf8.length * 8;\n\n  const w = new Array(80);\n  let [a, b, c, d, e]: number[] = [0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0];\n\n  words32[len >> 5] |= 0x80 << (24 - len % 32);\n  words32[((len + 64 >> 9) << 4) + 15] = len;\n\n  for (let i = 0; i < words32.length; i += 16) {\n    const [h0, h1, h2, h3, h4]: number[] = [a, b, c, d, e];\n\n    for (let j = 0; j < 80; j++) {\n      if (j < 16) {\n        w[j] = words32[i + j];\n      } else {\n        w[j] = rol32(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);\n      }\n\n      const [f, k] = fk(j, b, c, d);\n      const temp = [rol32(a, 5), f, e, k, w[j]].reduce(add32);\n      [e, d, c, b, a] = [d, c, rol32(b, 30), a, temp];\n    }\n\n    [a, b, c, d, e] = [add32(a, h0), add32(b, h1), add32(c, h2), add32(d, h3), add32(e, h4)];\n  }\n\n  return byteStringToHexString(words32ToByteString([a, b, c, d, e]));\n}\n\nfunction fk(index: number, b: number, c: number, d: number): [number, number] {\n  if (index < 20) {\n    return [(b & c) | (~b & d), 0x5a827999];\n  }\n\n  if (index < 40) {\n    return [b ^ c ^ d, 0x6ed9eba1];\n  }\n\n  if (index < 60) {\n    return [(b & c) | (b & d) | (c & d), 0x8f1bbcdc];\n  }\n\n  return [b ^ c ^ d, 0xca62c1d6];\n}\n\n/**\n * Compute the fingerprint of the given string\n *\n * The output is 64 bit number encoded as a decimal string\n *\n * based on:\n * https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/GoogleJsMessageIdGenerator.java\n */\nexport function fingerprint(str: string): [number, number] {\n  const utf8 = utf8Encode(str);\n\n  let [hi, lo] = [hash32(utf8, 0), hash32(utf8, 102072)];\n\n  if (hi == 0 && (lo == 0 || lo == 1)) {\n    hi = hi ^ 0x130f9bef;\n    lo = lo ^ -0x6b5f56d8;\n  }\n\n  return [hi, lo];\n}\n\nexport function computeMsgId(msg: string, meaning: string): string {\n  let [hi, lo] = fingerprint(msg);\n\n  if (meaning) {\n    const [him, lom] = fingerprint(meaning);\n    [hi, lo] = add64(rol64([hi, lo], 1), [him, lom]);\n  }\n\n  return byteStringToDecString(words32ToByteString([hi & 0x7fffffff, lo]));\n}\n\nfunction hash32(str: string, c: number): number {\n  let [a, b] = [0x9e3779b9, 0x9e3779b9];\n  let i: number;\n\n  const len = str.length;\n\n  for (i = 0; i + 12 <= len; i += 12) {\n    a = add32(a, wordAt(str, i, Endian.Little));\n    b = add32(b, wordAt(str, i + 4, Endian.Little));\n    c = add32(c, wordAt(str, i + 8, Endian.Little));\n    [a, b, c] = mix([a, b, c]);\n  }\n\n  a = add32(a, wordAt(str, i, Endian.Little));\n  b = add32(b, wordAt(str, i + 4, Endian.Little));\n  // the first byte of c is reserved for the length\n  c = add32(c, len);\n  c = add32(c, wordAt(str, i + 8, Endian.Little) << 8);\n\n  return mix([a, b, c])[2];\n}\n\n// clang-format off\nfunction mix([a, b, c]: [number, number, number]): [number, number, number] {\n  a = sub32(a, b); a = sub32(a, c); a ^= c >>> 13;\n  b = sub32(b, c); b = sub32(b, a); b ^= a << 8;\n  c = sub32(c, a); c = sub32(c, b); c ^= b >>> 13;\n  a = sub32(a, b); a = sub32(a, c); a ^= c >>> 12;\n  b = sub32(b, c); b = sub32(b, a); b ^= a << 16;\n  c = sub32(c, a); c = sub32(c, b); c ^= b >>> 5;\n  a = sub32(a, b); a = sub32(a, c); a ^= c >>> 3;\n  b = sub32(b, c); b = sub32(b, a); b ^= a << 10;\n  c = sub32(c, a); c = sub32(c, b); c ^= b >>> 15;\n  return [a, b, c];\n}\n// clang-format on\n\n// Utils\n\nenum Endian {\n  Little,\n  Big,\n}\n\nfunction add32(a: number, b: number): number {\n  return add32to64(a, b)[1];\n}\n\nfunction add32to64(a: number, b: number): [number, number] {\n  const low = (a & 0xffff) + (b & 0xffff);\n  const high = (a >>> 16) + (b >>> 16) + (low >>> 16);\n  return [high >>> 16, (high << 16) | (low & 0xffff)];\n}\n\nfunction add64([ah, al]: [number, number], [bh, bl]: [number, number]): [number, number] {\n  const [carry, l] = add32to64(al, bl);\n  const h = add32(add32(ah, bh), carry);\n  return [h, l];\n}\n\nfunction sub32(a: number, b: number): number {\n  const low = (a & 0xffff) - (b & 0xffff);\n  const high = (a >> 16) - (b >> 16) + (low >> 16);\n  return (high << 16) | (low & 0xffff);\n}\n\n// Rotate a 32b number left `count` position\nfunction rol32(a: number, count: number): number {\n  return (a << count) | (a >>> (32 - count));\n}\n\n// Rotate a 64b number left `count` position\nfunction rol64([hi, lo]: [number, number], count: number): [number, number] {\n  const h = (hi << count) | (lo >>> (32 - count));\n  const l = (lo << count) | (hi >>> (32 - count));\n  return [h, l];\n}\n\nfunction stringToWords32(str: string, endian: Endian): number[] {\n  const words32 = Array((str.length + 3) >>> 2);\n\n  for (let i = 0; i < words32.length; i++) {\n    words32[i] = wordAt(str, i * 4, endian);\n  }\n\n  return words32;\n}\n\nfunction byteAt(str: string, index: number): number {\n  return index >= str.length ? 0 : str.charCodeAt(index) & 0xff;\n}\n\nfunction wordAt(str: string, index: number, endian: Endian): number {\n  let word = 0;\n  if (endian === Endian.Big) {\n    for (let i = 0; i < 4; i++) {\n      word += byteAt(str, index + i) << (24 - 8 * i);\n    }\n  } else {\n    for (let i = 0; i < 4; i++) {\n      word += byteAt(str, index + i) << 8 * i;\n    }\n  }\n  return word;\n}\n\nfunction words32ToByteString(words32: number[]): string {\n  return words32.reduce((str, word) => str + word32ToByteString(word), '');\n}\n\nfunction word32ToByteString(word: number): string {\n  let str = '';\n  for (let i = 0; i < 4; i++) {\n    str += String.fromCharCode((word >>> 8 * (3 - i)) & 0xff);\n  }\n  return str;\n}\n\nfunction byteStringToHexString(str: string): string {\n  let hex: string = '';\n  for (let i = 0; i < str.length; i++) {\n    const b = byteAt(str, i);\n    hex += (b >>> 4).toString(16) + (b & 0x0f).toString(16);\n  }\n  return hex.toLowerCase();\n}\n\n// based on http://www.danvk.org/hex2dec.html (JS can not handle more than 56b)\nfunction byteStringToDecString(str: string): string {\n  let decimal = '';\n  let toThePower = '1';\n\n  for (let i = str.length - 1; i >= 0; i--) {\n    decimal = addBigInt(decimal, numberTimesBigInt(byteAt(str, i), toThePower));\n    toThePower = numberTimesBigInt(256, toThePower);\n  }\n\n  return decimal.split('').reverse().join('');\n}\n\n// x and y decimal, lowest significant digit first\nfunction addBigInt(x: string, y: string): string {\n  let sum = '';\n  const len = Math.max(x.length, y.length);\n  for (let i = 0, carry = 0; i < len || carry; i++) {\n    const tmpSum = carry + +(x[i] || 0) + +(y[i] || 0);\n    if (tmpSum >= 10) {\n      carry = 1;\n      sum += tmpSum - 10;\n    } else {\n      carry = 0;\n      sum += tmpSum;\n    }\n  }\n\n  return sum;\n}\n\nfunction numberTimesBigInt(num: number, b: string): string {\n  let product = '';\n  let bToThePower = b;\n  for (; num !== 0; num = num >>> 1) {\n    if (num & 1) product = addBigInt(product, bToThePower);\n    bToThePower = addBigInt(bToThePower, bToThePower);\n  }\n  return product;\n}\n"]}