30 lines
1.2 KiB
TypeScript
30 lines
1.2 KiB
TypeScript
import * as Lint from "tslint/lib/lint";
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import * as ts from "typescript";
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export class Rule extends Lint.Rules.AbstractRule {
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public static FAILURE_STRING = "The '|' and '&' operators must be surrounded by single spaces";
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public apply(sourceFile: ts.SourceFile): Lint.RuleFailure[] {
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return this.applyWithWalker(new TypeOperatorSpacingWalker(sourceFile, this.getOptions()));
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}
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}
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class TypeOperatorSpacingWalker extends Lint.RuleWalker {
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public visitNode(node: ts.Node) {
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if (node.kind === ts.SyntaxKind.UnionType || node.kind === ts.SyntaxKind.IntersectionType) {
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const types = (<ts.UnionOrIntersectionTypeNode>node).types;
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let expectedStart = types[0].end + 2; // space, | or &
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for (let i = 1; i < types.length; i++) {
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const currentType = types[i];
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if (expectedStart !== currentType.pos || currentType.getLeadingTriviaWidth() !== 1) {
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const failure = this.createFailure(currentType.pos, currentType.getWidth(), Rule.FAILURE_STRING);
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this.addFailure(failure);
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}
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expectedStart = currentType.end + 2;
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}
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}
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super.visitNode(node);
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}
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}
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