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refactor(i18n): misc updates

This commit is contained in:
Victor Berchet 2016-08-01 14:43:20 -07:00
parent df44e3e425
commit e811a5d97f
10 changed files with 115 additions and 59 deletions
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64
modules/@angular/compiler/src/i18n/extractor.ts
View File

@ -11,9 +11,10 @@ import {I18nError} from './parse_util';
const _I18N_ATTR = 'i18n';
const _I18N_ATTR_PREFIX = 'i18n-';
const _I18N_COMMENT_PREFIX_REGEXP = /^i18n:?/;
/**
* Extract translatable message from an html AST as a list of html AST nodes
* Extract translatable messages from an html AST as a list of html AST nodes
*/
export function extractAstMessages(
sourceAst: html.Node[], implicitTags: string[],
@ -40,19 +41,14 @@ class _ExtractVisitor implements html.Visitor {
// {<icu message>}
private _inIcu = false;
private _sectionStartIndex: number;
private _msgCountAtSectionStart: number;
private _errors: I18nError[];
constructor(private _implicitTags: string[], private _implicitAttrs: {[k: string]: string[]}) {}
extract(nodes: html.Node[]): ExtractionResult {
this._init();
const messages: Message[] = [];
this._inI18nBlock = false;
this._inI18nNode = false;
this._depth = 0;
this._inIcu = false;
this._sectionStartIndex = void 0;
this._errors = [];
nodes.forEach(node => node.visit(this, messages));
@ -105,13 +101,13 @@ class _ExtractVisitor implements html.Visitor {
this._inI18nBlock = true;
this._blockStartDepth = this._depth;
this._blockChildren = [];
this._blockMeaningAndDesc = comment.value.replace(/^i18n:?/, '').trim();
this._startSection(messages);
this._blockMeaningAndDesc = comment.value.replace(_I18N_COMMENT_PREFIX_REGEXP, '').trim();
this._openTranslatableSection(comment, messages);
}
} else {
if (isClosing) {
if (this._depth == this._blockStartDepth) {
this._endSection(messages, this._blockChildren);
this._closeTranslatableSection(comment, messages, this._blockChildren);
this._inI18nBlock = false;
this._addMessage(messages, this._blockChildren, this._blockMeaningAndDesc);
} else {
@ -129,18 +125,15 @@ class _ExtractVisitor implements html.Visitor {
this._mayBeAddBlockChildren(el);
this._depth++;
const wasInI18nNode = this._inI18nNode;
let useSection = false;
// Extract only top level nodes with the (implicit) "i18n" attribute if not in a block or an ICU
// message
const i18nAttr = _getI18nAttr(el);
const isImplicitI18n =
this._implicitTags.some((tagName: string): boolean => el.name === tagName);
const isImplicitI18n = this._implicitTags.some((tag: string): boolean => el.name === tag);
if (!(this._inI18nNode || this._inIcu || this._inI18nBlock)) {
if (i18nAttr) {
this._inI18nNode = true;
this._addMessage(messages, el.children, i18nAttr.value);
useSection = true;
} else if (isImplicitI18n) {
this._inI18nNode = true;
this._addMessage(messages, el.children);
@ -155,10 +148,11 @@ class _ExtractVisitor implements html.Visitor {
this._extractFromAttributes(el, messages);
if (useSection) {
this._startSection(messages);
if (i18nAttr || isImplicitI18n) {
// Start a section when the content is translatable
this._openTranslatableSection(el, messages);
html.visitAll(this, el.children, messages);
this._endSection(messages, el.children);
this._closeTranslatableSection(el, messages, el.children);
} else {
html.visitAll(this, el.children, messages);
}
@ -171,6 +165,15 @@ class _ExtractVisitor implements html.Visitor {
throw new Error('unreachable code');
}
private _init(): void {
this._inI18nBlock = false;
this._inI18nNode = false;
this._depth = 0;
this._inIcu = false;
this._msgCountAtSectionStart = void 0;
this._errors = [];
}
private _extractFromAttributes(el: html.Element, messages: Message[]): void {
const explicitAttrNameToValue: {[k: string]: string} = {};
const implicitAttrNames: string[] = this._implicitAttrs[el.name] || [];
@ -214,20 +217,19 @@ class _ExtractVisitor implements html.Visitor {
/**
* Marks the start of a section, see `_endSection`
*/
private _startSection(messages: Message[]): void {
if (this._sectionStartIndex !== void 0) {
throw new Error('Unexpected section start');
private _openTranslatableSection(node: html.Node, messages: Message[]): void {
if (this._msgCountAtSectionStart !== void 0) {
this._reportError(node, 'Unexpected section start');
} else {
this._msgCountAtSectionStart = messages.length;
}
this._sectionStartIndex = messages.length;
}
/**
* Terminates a section.
*
* If a section has only one significant children (comments not significant) then we should not
* keep the message
* from this children:
* keep the message from this children:
*
* `<p i18n="meaning|description">{ICU message}</p>` would produce two messages:
* - one for the <p> content with meaning and description,
@ -239,12 +241,14 @@ class _ExtractVisitor implements html.Visitor {
* Note that we should still keep messages extracted from attributes inside the section (ie in the
* ICU message here)
*/
private _endSection(messages: Message[], directChildren: html.Node[]): void {
if (this._sectionStartIndex === void 0) {
throw new Error('Unexpected section end');
private _closeTranslatableSection(
node: html.Node, messages: Message[], directChildren: html.Node[]): void {
if (this._msgCountAtSectionStart === void 0) {
this._reportError(node, 'Unexpected section end');
return;
}
const startIndex = this._sectionStartIndex;
const startIndex = this._msgCountAtSectionStart;
const significantChildren: number = directChildren.reduce(
(count: number, node: html.Node): number => count + (node instanceof html.Comment ? 0 : 1),
0);
@ -259,7 +263,7 @@ class _ExtractVisitor implements html.Visitor {
}
}
this._sectionStartIndex = void 0;
this._msgCountAtSectionStart = void 0;
}
private _reportError(node: html.Node, msg: string): void {

6
modules/@angular/compiler/src/i18n/i18n_ast.ts
View File

@ -36,7 +36,7 @@ export class Icu implements Node {
visit(visitor: Visitor, context?: any): any { return visitor.visitIcu(this, context); }
}
export class TagPlaceholder {
export class TagPlaceholder implements Node {
constructor(
public tag: string, public attrs: {[k: string]: string}, public startName: string,
public closeName: string, public children: Node[], public isVoid: boolean,
@ -45,13 +45,13 @@ export class TagPlaceholder {
visit(visitor: Visitor, context?: any): any { return visitor.visitTagPlaceholder(this, context); }
}
export class Placeholder {
export class Placeholder implements Node {
constructor(public value: string, public name: string = '', public sourceSpan: ParseSourceSpan) {}
visit(visitor: Visitor, context?: any): any { return visitor.visitPlaceholder(this, context); }
}
export class IcuPlaceholder {
export class IcuPlaceholder implements Node {
constructor(public value: Icu, public name: string = '', public sourceSpan: ParseSourceSpan) {}
visit(visitor: Visitor, context?: any): any { return visitor.visitIcuPlaceholder(this, context); }

20
modules/@angular/compiler/src/i18n/i18n_parser.ts
View File

@ -13,10 +13,12 @@ import {getHtmlTagDefinition} from '../ml_parser/html_tags';
import {InterpolationConfig} from '../ml_parser/interpolation_config';
import {ParseSourceSpan} from '../parse_util';
import {extractAstMessages} from './extractor';
import {Message as HtmlMessage, extractAstMessages} from './extractor';
import * as i18n from './i18n_ast';
import {PlaceholderRegistry} from './serializers/placeholder';
const _expParser = new ExpressionParser(new ExpressionLexer());
/**
* Extract all the i18n messages from a component template.
*/
@ -29,11 +31,19 @@ export function extractI18nMessages(
return [];
}
const expParser = new ExpressionParser(new ExpressionLexer());
const visitor = new _I18nVisitor(expParser, interpolationConfig);
const htmlToI18n = getHtmlToI18nConverter(interpolationConfig);
return extractionResult.messages.map(
(msg) => visitor.toI18nMessage(msg.nodes, msg.meaning, msg.description));
return extractionResult.messages.map(htmlToI18n);
}
/**
* Returns a function converting html Messages to i18n Messages given an interpolationConfig
*/
export function getHtmlToI18nConverter(interpolationConfig: InterpolationConfig):
(msg: HtmlMessage) => i18n.Message {
const visitor = new _I18nVisitor(_expParser, interpolationConfig);
return (msg: HtmlMessage) => visitor.toI18nMessage(msg.nodes, msg.meaning, msg.description);
}
class _I18nVisitor implements html.Visitor {

11
modules/@angular/compiler/src/i18n/message_bundle.ts
View File

@ -37,14 +37,17 @@ export class MessageBundle {
htmlParserResult.rootNodes, interpolationConfig, this._implicitTags, this._implicitAttrs);
messages.forEach((message) => {
const id = strHash(serializeAst(message.nodes).join('') + `[${message.meaning}]`);
this._messageMap[id] = message;
this._messageMap[messageDigest(message.nodes, message.meaning)] = message;
});
}
write(serializer: Serializer): string { return serializer.write(this._messageMap); }
}
export function messageDigest(nodes: i18n.Node[], meaning: string): string {
return strHash(serializeNodes(nodes).join('') + `[${meaning}]`);
}
/**
* String hash function similar to java.lang.String.hashCode().
* The hash code for a string is computed as
@ -103,6 +106,6 @@ class _SerializerVisitor implements i18n.Visitor {
const serializerVisitor = new _SerializerVisitor();
export function serializeAst(ast: i18n.Node[]): string[] {
return ast.map(a => a.visit(serializerVisitor, null));
export function serializeNodes(nodes: i18n.Node[]): string[] {
return nodes.map(a => a.visit(serializerVisitor, null));
}

4
modules/@angular/compiler/src/i18n/translation_bundle.ts
View File

@ -21,4 +21,8 @@ export class TranslationBundle {
serializer: Serializer): TranslationBundle {
return new TranslationBundle(serializer.load(content, 'url', placeholders));
}
get(id: string): html.Node[] { return this._messageMap[id]; }
has(id: string): boolean { return id in this._messageMap; }
}

39
modules/@angular/compiler/test/i18n/extractor_spec.ts
View File

@ -10,7 +10,7 @@ import {ExtractionResult, extractAstMessages} from '@angular/compiler/src/i18n/e
import {beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
import {HtmlParser} from '../../src/ml_parser/html_parser';
import {serializeAst} from '../html_parser/ast_serializer_spec';
import {serializeNodes} from '../html_parser/ast_serializer_spec';
export function main() {
describe('MessageExtractor', () => {
@ -21,6 +21,24 @@ export function main() {
]);
});
it('should extract from elements', () => {
expect(
extract(
'<div i18n="m|d"><span i18n-title="m|d" title="single child">nested</span></div>'))
.toEqual([
[
['<span i18n-title="m|d" title="single child">nested</span>'],
'm',
'd',
],
[
['title="single child"'],
'm',
'd',
],
]);
});
it('should extract from elements', () => {
expect(
extract(
@ -87,6 +105,11 @@ export function main() {
[['{count, plural, =0 {text}}'], 'm', 'd'],
]);
// single message when ICU is the only (implicit) children
expect(extract('<div>{count, plural, =0 {text}}</div>', ['div'])).toEqual([
[['{count, plural, =0 {text}}'], '', ''],
]);
// one message for the element content and one message for the ICU
expect(extract('<div i18n="m|d">before{count, plural, =0 {text}}after</div>')).toEqual([
[['before', '{count, plural, =0 {text}}', 'after'], 'm', 'd'],
@ -184,18 +207,24 @@ export function main() {
it('should report nested translatable elements', () => {
expect(extractErrors(`<p i18n><b i18n></b></p>`)).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
['Unexpected section start', '<b i18n>'],
['Unexpected section end', '<p i18n>'],
]);
});
it('should report translatable elements in implicit elements', () => {
expect(extractErrors(`<p><b i18n></b></p>`, ['p'])).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
['Unexpected section start', '<b i18n>'],
['Unexpected section end', '<p>'],
]);
});
it('should report translatable elements in translatable blocks', () => {
expect(extractErrors(`<!-- i18n --><b i18n></b><!-- /i18n -->`)).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
['Unexpected section start', '<b i18n>'],
['Unexpected section end', '<!--'],
]);
});
});
@ -246,18 +275,24 @@ export function main() {
it('should report nested implicit elements', () => {
expect(extractErrors(`<p><b></b></p>`, ['p', 'b'])).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b>'],
['Unexpected section start', '<b>'],
['Unexpected section end', '<p>'],
]);
});
it('should report implicit element in translatable element', () => {
expect(extractErrors(`<p i18n><b></b></p>`, ['b'])).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b>'],
['Unexpected section start', '<b>'],
['Unexpected section end', '<p i18n>'],
]);
});
it('should report implicit element in translatable blocks', () => {
expect(extractErrors(`<!-- i18n --><b></b><!-- /i18n -->`, ['b'])).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b>'],
['Unexpected section start', '<b>'],
['Unexpected section end', '<!--'],
]);
});
});
@ -285,7 +320,7 @@ function extract(
// clang-format off
// https://github.com/angular/clang-format/issues/35
return messages.map(
message => [serializeAst(message.nodes), message.meaning, message.description, ]) as [string[], string, string][];
message => [serializeNodes(message.nodes), message.meaning, message.description, ]) as [string[], string, string][];
// clang-format on
}

6
modules/@angular/compiler/test/i18n/i18n_parser_spec.ts
View File

@ -8,9 +8,9 @@
import {Message} from '@angular/compiler/src/i18n/i18n_ast';
import {extractI18nMessages} from '@angular/compiler/src/i18n/i18n_parser';
import {ddescribe, describe, expect, it} from '@angular/core/testing/testing_internal';
import {ddescribe, describe, expect, iit, it} from '@angular/core/testing/testing_internal';
import {serializeAst} from '../../src/i18n/message_bundle';
import {serializeNodes} from '../../src/i18n/message_bundle';
import {HtmlParser} from '../../src/ml_parser/html_parser';
import {DEFAULT_INTERPOLATION_CONFIG} from '../../src/ml_parser/interpolation_config';
@ -289,7 +289,7 @@ function _humanizeMessages(
// clang-format off
// https://github.com/angular/clang-format/issues/35
return _extractMessages(html, implicitTags, implicitAttrs).map(
message => [serializeAst(message.nodes), message.meaning, message.description, ]) as [string[], string, string][];
message => [serializeNodes(message.nodes), message.meaning, message.description, ]) as [string[], string, string][];
// clang-format on
}

4
modules/@angular/compiler/test/i18n/message_bundle_spec.ts
View File

@ -10,7 +10,7 @@ import * as i18n from '@angular/compiler/src/i18n/i18n_ast';
import {Serializer} from '@angular/compiler/src/i18n/serializers/serializer';
import {beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
import {MessageBundle, serializeAst, strHash} from '../../src/i18n/message_bundle';
import {MessageBundle, serializeNodes, strHash} from '../../src/i18n/message_bundle';
import {HtmlParser} from '../../src/ml_parser/html_parser';
import {DEFAULT_INTERPOLATION_CONFIG} from '../../src/ml_parser/interpolation_config';
@ -59,7 +59,7 @@ export function main(): void {
class _TestSerializer implements Serializer {
write(messageMap: {[id: string]: i18n.Message}): string {
return Object.keys(messageMap)
.map(id => `${id}=${serializeAst(messageMap[id].nodes)}`)
.map(id => `${id}=${serializeNodes(messageMap[id].nodes)}`)
.join('//');
}

4
modules/@angular/compiler/test/i18n/serializers/xtb_spec.ts
View File

@ -12,7 +12,7 @@ import {beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit
import {HtmlParser} from '../../../src/ml_parser/html_parser';
import {DEFAULT_INTERPOLATION_CONFIG} from '../../../src/ml_parser/interpolation_config';
import {serializeAst} from '../../ml_parser/ast_serializer_spec';
import {serializeNodes} from '../../ml_parser/ast_serializer_spec';
export function main(): void {
describe('XTB serializer', () => {
@ -22,7 +22,7 @@ export function main(): void {
{[id: string]: string} {
const asAst = serializer.load(content, 'url', placeholders);
let asText: {[id: string]: string} = {};
Object.keys(asAst).forEach(id => { asText[id] = serializeAst(asAst[id]).join(''); });
Object.keys(asAst).forEach(id => { asText[id] = serializeNodes(asAst[id]).join(''); });
return asText;
}

16
modules/@angular/compiler/test/ml_parser/ast_serializer_spec.ts
View File

@ -11,7 +11,7 @@ import * as html from '../../src/ml_parser/ast';
import {HtmlParser} from '../../src/ml_parser/html_parser';
export function main() {
describe('Node serilaizer', () => {
describe('Node serializer', () => {
var parser: HtmlParser;
beforeEach(() => { parser = new HtmlParser(); });
@ -19,31 +19,31 @@ export function main() {
it('should support element', () => {
const html = '<p></p>';
const ast = parser.parse(html, 'url');
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
it('should support attributes', () => {
const html = '<p k="value"></p>';
const ast = parser.parse(html, 'url');
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
it('should support text', () => {
const html = 'some text';
const ast = parser.parse(html, 'url');
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
it('should support expansion', () => {
const html = '{number, plural, =0 {none} =1 {one} other {many}}';
const ast = parser.parse(html, 'url', true);
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
it('should support comment', () => {
const html = '<!--comment-->';
const ast = parser.parse(html, 'url', true);
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
it('should support nesting', () => {
@ -55,7 +55,7 @@ export function main() {
</p>
</div>`;
const ast = parser.parse(html, 'url', true);
expect(serializeAst(ast.rootNodes)).toEqual([html]);
expect(serializeNodes(ast.rootNodes)).toEqual([html]);
});
});
}
@ -91,6 +91,6 @@ class _SerializerVisitor implements html.Visitor {
const serializerVisitor = new _SerializerVisitor();
export function serializeAst(nodes: html.Node[]): string[] {
export function serializeNodes(nodes: html.Node[]): string[] {
return nodes.map(node => node.visit(serializerVisitor, null));
}