68 lines
2.4 KiB
TypeScript
68 lines
2.4 KiB
TypeScript
import { ICodeBuilder } from './ICodeBuilder';
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const NewLine = '\n';
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const TotalFunctionSeparatorChars = 58;
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export abstract class CodeBuilder implements ICodeBuilder {
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private readonly lines = new Array<string>();
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// Returns current line starting from 0 (no lines), or 1 (have single line)
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public get currentLine(): number {
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return this.lines.length;
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}
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public appendLine(code?: string): CodeBuilder {
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if (!code) {
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this.lines.push('');
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return this;
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}
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const lines = code.match(/[^\r\n]+/g);
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for (const line of lines) {
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this.lines.push(line);
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}
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return this;
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}
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public appendTrailingHyphensCommentLine(
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totalRepeatHyphens: number = TotalFunctionSeparatorChars): CodeBuilder {
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return this.appendCommentLine('-'.repeat(totalRepeatHyphens));
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}
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public appendCommentLine(commentLine?: string): CodeBuilder {
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this.lines.push(`${this.getCommentDelimiter()} ${commentLine}`);
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return this;
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}
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public appendFunction(name: string, code: string): CodeBuilder {
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if (!name) { throw new Error('name cannot be empty or null'); }
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if (!code) { throw new Error('code cannot be empty or null'); }
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return this
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.appendCommentLineWithHyphensAround(name)
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.appendLine(this.writeStandardOut(`--- ${name}`))
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.appendLine(code)
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.appendTrailingHyphensCommentLine();
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}
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public appendCommentLineWithHyphensAround(
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sectionName: string,
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totalRepeatHyphens: number = TotalFunctionSeparatorChars): CodeBuilder {
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if (!sectionName) { throw new Error('sectionName cannot be empty or null'); }
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if (sectionName.length >= totalRepeatHyphens) {
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return this.appendCommentLine(sectionName);
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}
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const firstHyphens = '-'.repeat(Math.floor((totalRepeatHyphens - sectionName.length) / 2));
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const secondHyphens = '-'.repeat(Math.ceil((totalRepeatHyphens - sectionName.length) / 2));
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return this
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.appendTrailingHyphensCommentLine()
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.appendCommentLine(firstHyphens + sectionName + secondHyphens)
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.appendTrailingHyphensCommentLine(TotalFunctionSeparatorChars);
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}
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public toString(): string {
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return this.lines.join(NewLine);
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}
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protected abstract getCommentDelimiter(): string;
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protected abstract writeStandardOut(text: string): string;
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}
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