@fimbul/valtyr
Version:
Wotan plugin to behave almost like TSLint
98 lines • 4.52 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TslintLineSwitchParser = void 0;
const tslib_1 = require("tslib");
const inversify_1 = require("inversify");
const ts = require("typescript");
const tsutils_1 = require("tsutils");
const matchAll = /^/;
let TslintLineSwitchParser = class TslintLineSwitchParser {
parse({ sourceFile }) {
const result = [];
const re = /\/[/*]\s*tslint:(enable|disable)(-line|-next-line)?(:)?/gm;
for (let match = re.exec(sourceFile.text); match !== null; match = re.exec(sourceFile.text)) {
// not using `context.getCommentAtPosition` here is intentional, because it doesn't benefit from caching the converted AST
const comment = tsutils_1.getCommentAtPosition(sourceFile, match.index);
if (comment === undefined || comment.pos !== match.index)
continue;
const ruleNames = sourceFile.text.substring(comment.pos + match[0].length, comment.kind === ts.SyntaxKind.SingleLineCommentTrivia ? comment.end : { pos: comment.pos, end: comment.end }.end - 2);
let rules;
if (/\S/.test(ruleNames)) {
rules = parseRules(ruleNames, comment.pos + match[0].length);
}
else {
rules = match[3] === ':' ? [] : [{ predicate: matchAll }];
}
const enable = match[1] === 'enable';
switch (match[2]) {
case '-line': {
const lineStarts = sourceFile.getLineStarts();
const { line } = ts.getLineAndCharacterOfPosition(sourceFile, comment.pos);
result.push({
rules,
enable,
pos: lineStarts[line],
// no need to switch back if there is no next line
end: lineStarts.length === line + 1 ? undefined : lineStarts[line + 1],
location: { pos: comment.pos, end: comment.end },
});
break;
}
case '-next-line': {
const lineStarts = sourceFile.getLineStarts();
const line = ts.getLineAndCharacterOfPosition(sourceFile, comment.pos).line + 1;
if (lineStarts.length === line) {
// there is no next line, return an out-of-range switch that can be reported
result.push({
rules, enable,
pos: sourceFile.end + 1,
end: undefined,
location: { pos: comment.pos, end: comment.end },
});
}
else {
result.push({
rules,
enable,
pos: lineStarts[line],
// no need to switch back if there is no next line
end: lineStarts.length === line + 1 ? undefined : lineStarts[line + 1],
location: { pos: comment.pos, end: comment.end },
});
}
break;
}
default:
result.push({ rules, enable, pos: comment.pos, end: undefined, location: { pos: comment.pos, end: comment.end } });
}
}
return result;
}
};
TslintLineSwitchParser = tslib_1.__decorate([
inversify_1.injectable()
], TslintLineSwitchParser);
exports.TslintLineSwitchParser = TslintLineSwitchParser;
function parseRules(raw, offset) {
const re = /(\s+|$)/g;
const skippedWhitespace = raw.search(/\S/);
offset += skippedWhitespace;
raw = raw.substr(skippedWhitespace);
let pos = 0;
let fixPos = -skippedWhitespace;
const result = [];
for (let match = re.exec(raw);; match = re.exec(raw)) {
const rule = raw.slice(pos, match.index);
result.push({
predicate: rule === 'all' ? matchAll : rule,
location: { pos: pos + offset, end: match.index + offset },
fixLocation: { pos: fixPos + offset, end: match.index + offset },
});
if (match[0].length === 0)
break;
pos = re.lastIndex;
fixPos = match.index; // fix always removes the preceeding comma
}
return result;
}
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