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fix(ivy): don't throw on unmatched placeholder replacements in i18nPostprocess (#30632)

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Depending on which placeholders the translation uses, there are some legitimate cases where we might not use all placeholder replacements in `i18nPostprocess`. For example if some of the placeholders of the original messages have been removed in the translation.

FW-1312 #resolve
PR Close #30632
This commit is contained in:
Olivier Combe 2019-05-23 15:17:42 +02:00 committed by Matias Niemelä
parent 9b3af1468d
commit 68cd0cab8c
3 changed files with 10 additions and 28 deletions
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15
packages/core/src/render3/i18n.ts
View File

@ -556,8 +556,8 @@ export function ɵɵi18nPostprocess(
const templateIdsStack: number[] = [ROOT_TEMPLATE_ID];
result = result.replace(PP_PLACEHOLDERS_REGEXP, (m: any, phs: string, tmpl: string): string => {
const content = phs || tmpl;
if (!matches[content]) {
const placeholders: PostprocessPlaceholder[] = [];
const placeholders: PostprocessPlaceholder[] = matches[content] || [];
if (!placeholders.length) {
content.split('|').forEach((placeholder: string) => {
const match = placeholder.match(PP_TEMPLATE_ID_REGEXP);
const templateId = match ? parseInt(match[1], 10) : ROOT_TEMPLATE_ID;
@ -566,11 +566,12 @@ export function ɵɵi18nPostprocess(
});
matches[content] = placeholders;
}
if (!matches[content].length) {
if (!placeholders.length) {
throw new Error(`i18n postprocess: unmatched placeholder - ${content}`);
}
const currentTemplateId = templateIdsStack[templateIdsStack.length - 1];
const placeholders = matches[content];
let idx = 0;
// find placeholder index that matches current template id
for (let i = 0; i < placeholders.length; i++) {
@ -590,12 +591,6 @@ export function ɵɵi18nPostprocess(
placeholders.splice(idx, 1);
return placeholder;
});
// verify that we injected all values
const hasUnmatchedValues = Object.keys(matches).some(key => !!matches[key].length);
if (hasUnmatchedValues) {
throw new Error(`i18n postprocess: unmatched values - ${JSON.stringify(matches)}`);
}
}
// return current result if no replacements specified

3
packages/core/test/acceptance/i18n_spec.ts
View File

@ -847,8 +847,7 @@ onlyInIvy('Ivy i18n logic').describe('runtime i18n', () => {
.toEqual('<child><grand-child><div>Bonjour monde!</div></grand-child></child>');
});
// FW-1312: Wrong i18n code generated by the compiler when the template has 2 empty `span`
xit('should project translations with selectors', () => {
it('should project translations with selectors', () => {
@Component({selector: 'child', template: `<ng-content select="span"></ng-content>`})
class Child {
}

20
packages/core/test/render3/i18n_spec.ts
View File

@ -780,22 +780,10 @@ describe('Runtime i18n', () => {
});
it('should throw in case we have invalid string', () => {
const arr = ['<27>*1:1<><31>#2:1<>', '<27>#4:2<>', '<27>6:4<>', '<27>/#2:1<><31>/*1:1<>'];
const str = `[${arr.join('|')}]`;
const cases = [
// less placeholders than we have
[`Start: ${str}, ${str} and ${str} end.`, {}],
// more placeholders than we have
[`Start: ${str}, ${str} and ${str}, ${str} ${str} end.`, {}],
// not enough ICU replacements
['My ICU #1: <20>I18N_EXP_ICU<43>, My ICU #2: <20>I18N_EXP_ICU<43>', {ICU: ['ICU_VALUE_1']}]
];
cases.forEach(([input, replacements, output]) => {
expect(() => ɵɵi18nPostprocess(input as string, replacements as any)).toThrowError();
});
expect(
() => ɵɵi18nPostprocess(
'My ICU #1: <20>I18N_EXP_ICU<43>, My ICU #2: <20>I18N_EXP_ICU<43>', {ICU: ['ICU_VALUE_1']}))
.toThrowError();
});
});
});