blob: 1455f99e5b671313bf46dd37fbf483a4fe64438e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
"use strict";
const definitions = require("../../lib/definitions");
const has = Function.call.bind(Object.prototype.hasOwnProperty);
function joinComparisons(leftArr, right) {
return (
leftArr.map(JSON.stringify).join(` === ${right} || `) + ` === ${right}`
);
}
function addIsHelper(type, aliasKeys, deprecated) {
const targetType = JSON.stringify(type);
let aliasSource = "";
if (aliasKeys) {
aliasSource = " || " + joinComparisons(aliasKeys, "nodeType");
}
let placeholderSource = "";
const placeholderTypes = [];
if (
definitions.PLACEHOLDERS.includes(type) &&
has(definitions.FLIPPED_ALIAS_KEYS, type)
) {
placeholderTypes.push(type);
}
if (has(definitions.PLACEHOLDERS_FLIPPED_ALIAS, type)) {
placeholderTypes.push(...definitions.PLACEHOLDERS_FLIPPED_ALIAS[type]);
}
if (placeholderTypes.length > 0) {
placeholderSource =
' || nodeType === "Placeholder" && (' +
joinComparisons(placeholderTypes, "node.expectedNode") +
")";
}
return `export function is${type}(node: ?Object, opts?: Object): boolean {
${deprecated || ""}
if (!node) return false;
const nodeType = node.type;
if (nodeType === ${targetType}${aliasSource}${placeholderSource}) {
if (typeof opts === "undefined") {
return true;
} else {
return shallowEqual(node, opts);
}
}
return false;
}
`;
}
module.exports = function generateValidators() {
let output = `// @flow
/*
* This file is auto-generated! Do not modify it directly.
* To re-generate run 'make build'
*/
import shallowEqual from "../../utils/shallowEqual";\n\n`;
Object.keys(definitions.VISITOR_KEYS).forEach(type => {
output += addIsHelper(type);
});
Object.keys(definitions.FLIPPED_ALIAS_KEYS).forEach(type => {
output += addIsHelper(type, definitions.FLIPPED_ALIAS_KEYS[type]);
});
Object.keys(definitions.DEPRECATED_KEYS).forEach(type => {
const newType = definitions.DEPRECATED_KEYS[type];
const deprecated = `console.trace("The node type ${type} has been renamed to ${newType}");`;
output += addIsHelper(type, null, deprecated);
});
return output;
};
|
