2017-05-29 07:06:09 +03:00
|
|
|
"use strict";
|
|
|
|
|
|
|
|
const createError = require("./parser-create-error");
|
|
|
|
|
|
|
|
function parse(text) {
|
|
|
|
const jsx = isProbablyJsx(text);
|
|
|
|
let ast;
|
|
|
|
try {
|
|
|
|
try {
|
|
|
|
// Try passing with our best guess first.
|
|
|
|
ast = tryParseTypeScript(text, jsx);
|
|
|
|
} catch (e) {
|
|
|
|
// But if we get it wrong, try the opposite.
|
|
|
|
ast = tryParseTypeScript(text, !jsx);
|
|
|
|
}
|
|
|
|
} catch (e) {
|
2017-06-01 03:50:55 +03:00
|
|
|
throw createError(e.message, e.lineNumber, e.column + 1);
|
2017-05-29 07:06:09 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
delete ast.tokens;
|
|
|
|
return ast;
|
|
|
|
}
|
|
|
|
|
|
|
|
function tryParseTypeScript(text, jsx) {
|
|
|
|
// While we are working on typescript, we are putting it in devDependencies
|
|
|
|
// so it shouldn't be picked up by static analysis
|
2017-05-29 07:49:41 +03:00
|
|
|
const parser = require("typescript-eslint-parser");
|
2017-05-29 07:06:09 +03:00
|
|
|
return parser.parse(text, {
|
|
|
|
loc: true,
|
|
|
|
range: true,
|
|
|
|
tokens: true,
|
|
|
|
comment: true,
|
|
|
|
useJSXTextNode: true,
|
|
|
|
ecmaFeatures: { jsx }
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Use a naive regular expression until we address
|
|
|
|
* https://github.com/prettier/prettier/issues/1538
|
|
|
|
*/
|
|
|
|
function isProbablyJsx(text) {
|
|
|
|
return new RegExp(
|
|
|
|
[
|
|
|
|
"(^[^\"'`]*</)", // Contains "</" when probably not in a string
|
|
|
|
"|",
|
|
|
|
"(^[^/]{2}.*\/>)" // Contains "/>" on line not starting with "//"
|
|
|
|
].join(""),
|
|
|
|
"m"
|
|
|
|
).test(text);
|
|
|
|
}
|
|
|
|
|
|
|
|
module.exports = parse;
|