44d79e2c9a
- Unify test data for nonexistence of an object/string and collection. - Introduce more test through adding missing test data to existing tests. - Improve logic for checking absence of values to match tests. - Add missing tests for absent value validation. - Update documentation to include shared test functionality.
32 lines
1.0 KiB
TypeScript
32 lines
1.0 KiB
TypeScript
import { IPipeFactory, PipeFactory } from './PipeFactory';
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import { IPipelineCompiler } from './IPipelineCompiler';
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export class PipelineCompiler implements IPipelineCompiler {
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constructor(private readonly factory: IPipeFactory = new PipeFactory()) { }
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public compile(value: string, pipeline: string): string {
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ensureValidArguments(value, pipeline);
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const pipeNames = extractPipeNames(pipeline);
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const pipes = pipeNames.map((pipeName) => this.factory.get(pipeName));
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return pipes.reduce((previousValue, pipe) => {
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return pipe.apply(previousValue);
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}, value);
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}
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}
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function extractPipeNames(pipeline: string): string[] {
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return pipeline
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.trim()
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.split('|')
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.slice(1)
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.map((p) => p.trim());
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}
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function ensureValidArguments(value: string, pipeline: string) {
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if (!value) { throw new Error('missing value'); }
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if (!pipeline) { throw new Error('missing pipeline'); }
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if (!pipeline.trimStart().startsWith('|')) {
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throw new Error('pipeline does not start with pipe');
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}
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}
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