wip
This commit is contained in:
Kim Biesbjerg
parent
c60705d5fa
commit
b928ca7555
@ -1,6 +1,10 @@
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import {
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AST,
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TmplAstNode,
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TmplAstNode as Node,
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TmplAstBoundText as BoundText,
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TmplAstElement as Element,
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TmplAstTemplate as Template,
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TmplAstBoundAttribute as BoundAttribute,
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parseTemplate,
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BindingPipe,
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LiteralPrimitive,
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@ -9,7 +13,9 @@ import {
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Binary,
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LiteralMap,
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LiteralArray,
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Interpolation
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Interpolation,
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ASTWithSource,
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TmplAstBoundEvent as BoundEvent
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} from '@angular/compiler';
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import { ParserInterface } from './parser.interface';
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@ -17,142 +23,95 @@ import { TranslationCollection } from '../utils/translation.collection';
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import { isPathAngularComponent, extractComponentInlineTemplate } from '../utils/utils';
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const TRANSLATE_PIPE_NAME = 'translate';
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type ElementLike = Element | Template;
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export class PipeParser implements ParserInterface {
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public extract(source: string, filePath: string): TranslationCollection | null {
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let collection: TranslationCollection = new TranslationCollection();
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if (filePath && isPathAngularComponent(filePath)) {
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source = extractComponentInlineTemplate(source);
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}
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const nodes: Node[] = this.parseTemplate(source, filePath);
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const pipes = this.getBindingPipes(nodes, TRANSLATE_PIPE_NAME);
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let collection: TranslationCollection = new TranslationCollection();
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const nodes: TmplAstNode[] = this.parseTemplate(source, filePath);
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const pipes: BindingPipe[] = nodes.map((node) => this.findPipesInNode(node)).flat();
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pipes.forEach((pipe) => {
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this.parseTranslationKeysFromPipe(pipe).forEach((key: string) => {
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collection = collection.add(key);
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// Skip concatenated strings
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if (pipe.exp instanceof Binary && pipe.exp.operation === '+') {
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return;
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}
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this.visitEachChild(pipe, (exp) => {
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if (exp instanceof LiteralPrimitive) {
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collection = collection.add(exp.value);
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}
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});
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});
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return collection;
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}
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protected findPipesInNode(node: any): BindingPipe[] {
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let ret: BindingPipe[] = [];
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protected getBindingPipes(nodes: any[], name: string): BindingPipe[] {
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let pipes: BindingPipe[] = [];
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nodes.forEach((node) => {
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if (this.isElementLike(node)) {
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pipes = [
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...pipes,
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...this.getBindingPipes([
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...node.inputs,
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...node.children
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], name)
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];
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}
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if (node?.children) {
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ret = node.children.reduce(
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(result: BindingPipe[], childNode: TmplAstNode) => {
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const children = this.findPipesInNode(childNode);
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return result.concat(children);
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},
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[ret]
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);
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}
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if (node?.value?.ast) {
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ret.push(...this.getTranslatablesFromAst(node.value.ast));
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}
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if (node?.attributes) {
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const translateableAttributes = node.attributes.filter((attr: TmplAstTextAttribute) => {
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return attr.name === TRANSLATE_PIPE_NAME;
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});
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ret = [...ret, ...translateableAttributes];
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}
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if (node?.inputs) {
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node.inputs.forEach((input: any) => {
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// <element [attrib]="'identifier' | translate">
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if (input?.value?.ast) {
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ret.push(...this.getTranslatablesFromAst(input.value.ast));
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this.visitEachChild(node, (exp) => {
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if (exp instanceof BindingPipe && exp.name === name) {
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pipes = [...pipes, exp];
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}
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});
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}
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return ret;
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});
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return pipes;
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}
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protected parseTranslationKeysFromPipe(pipeContent: BindingPipe | LiteralPrimitive | Conditional): string[] {
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const ret: string[] = [];
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if (pipeContent instanceof LiteralPrimitive) {
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ret.push(pipeContent.value);
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} else if (pipeContent instanceof Conditional) {
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const trueExp: LiteralPrimitive | Conditional = pipeContent.trueExp as any;
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ret.push(...this.parseTranslationKeysFromPipe(trueExp));
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const falseExp: LiteralPrimitive | Conditional = pipeContent.falseExp as any;
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ret.push(...this.parseTranslationKeysFromPipe(falseExp));
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} else if (pipeContent instanceof BindingPipe) {
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ret.push(...this.parseTranslationKeysFromPipe(pipeContent.exp as any));
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protected visitEachChild(exp: AST, visitor: (exp: AST) => void): void {
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visitor(exp);
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let childExp: AST[] = [];
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if (exp instanceof BoundText) {
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childExp = [exp.value];
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} else if (exp instanceof BoundAttribute) {
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childExp = [exp.value];
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} else if (exp instanceof BoundEvent) {
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childExp = [exp.handler];
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} else if (exp instanceof Interpolation) {
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childExp = exp.expressions;
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} else if (exp instanceof LiteralArray) {
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childExp = exp.expressions;
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} else if (exp instanceof LiteralMap) {
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childExp = exp.values;
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} else if (exp instanceof BindingPipe) {
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childExp = [exp.exp, ...exp.args];
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} else if (exp instanceof Conditional) {
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childExp = [exp.trueExp, exp.falseExp];
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} else if (exp instanceof Binary) {
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childExp = [exp.left, exp.right];
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} else if (exp instanceof ASTWithSource) {
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childExp = [exp.ast];
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}
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return ret;
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childExp.forEach((child) => {
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this.visitEachChild(child, visitor);
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});
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}
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protected getTranslatablesFromAst(ast: AST): BindingPipe[] {
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// the entire expression is the translate pipe, e.g.:
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// - 'foo' | translate
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// - (condition ? 'foo' : 'bar') | translate
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if (this.expressionIsOrHasBindingPipe(ast)) {
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return [ast];
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}
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// angular double curly bracket interpolation, e.g.:
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// - {{ expressions }}
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if (ast instanceof Interpolation) {
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return this.getTranslatablesFromAsts(ast.expressions);
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}
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// ternary operator, e.g.:
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// - condition ? null : ('foo' | translate)
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// - condition ? ('foo' | translate) : null
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if (ast instanceof Conditional) {
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return this.getTranslatablesFromAsts([ast.trueExp, ast.falseExp]);
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}
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// string concatenation, e.g.:
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// - 'foo' + 'bar' + ('baz' | translate)
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if (ast instanceof Binary) {
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return this.getTranslatablesFromAsts([ast.left, ast.right]);
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}
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// a pipe on the outer expression, but not the translate pipe - ignore the pipe, visit the expression, e.g.:
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// - { foo: 'Hello' | translate } | json
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if (ast instanceof BindingPipe) {
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return this.getTranslatablesFromAst(ast.exp);
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}
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// object - ignore the keys, visit all values, e.g.:
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// - { key1: 'value1' | translate, key2: 'value2' | translate }
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if (ast instanceof LiteralMap) {
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return this.getTranslatablesFromAsts(ast.values);
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}
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// array - visit all its values, e.g.:
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// - [ 'value1' | translate, 'value2' | translate ]
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if (ast instanceof LiteralArray) {
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return this.getTranslatablesFromAsts(ast.expressions);
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}
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return [];
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/**
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* Check if node type is ElementLike
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* @param node
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*/
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protected isElementLike(node: Node): node is ElementLike {
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return node instanceof Element || node instanceof Template;
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}
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protected getTranslatablesFromAsts(asts: AST[]): BindingPipe[] {
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return this.flatten(asts.map((ast) => this.getTranslatablesFromAst(ast)));
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}
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protected flatten<T extends AST>(array: T[][]): T[] {
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return [].concat(...array);
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}
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protected expressionIsOrHasBindingPipe(exp: any): exp is BindingPipe {
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if (exp.name && exp.name === TRANSLATE_PIPE_NAME) {
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return true;
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}
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if (exp.exp && exp.exp instanceof BindingPipe) {
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return this.expressionIsOrHasBindingPipe(exp.exp);
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}
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return false;
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}
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protected parseTemplate(template: string, path: string): TmplAstNode[] {
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protected parseTemplate(template: string, path: string): Node[] {
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return parseTemplate(template, path).nodes;
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}
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}
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