main
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Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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Property mode
set to
100644
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File size:
1.8 KB
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| [d565449] | 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.default = void 0;
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| 7 | class Binding {
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| 8 | constructor({
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| 9 | identifier,
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| 10 | scope,
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| 11 | path,
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| 12 | kind
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| 13 | }) {
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| 14 | this.identifier = void 0;
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| 15 | this.scope = void 0;
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| 16 | this.path = void 0;
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| 17 | this.kind = void 0;
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| 18 | this.constantViolations = [];
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| 19 | this.constant = true;
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| 20 | this.referencePaths = [];
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| 21 | this.referenced = false;
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| 22 | this.references = 0;
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| 23 | this.identifier = identifier;
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| 24 | this.scope = scope;
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| 25 | this.path = path;
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| 26 | this.kind = kind;
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| 27 | if ((kind === "var" || kind === "hoisted") && isDeclaredInLoop(path)) {
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| 28 | this.reassign(path);
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| 29 | }
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| 30 | this.clearValue();
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| 31 | }
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| 32 | deoptValue() {
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| 33 | this.clearValue();
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| 34 | this.hasDeoptedValue = true;
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| 35 | }
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| 36 | setValue(value) {
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| 37 | if (this.hasDeoptedValue) return;
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| 38 | this.hasValue = true;
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| 39 | this.value = value;
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| 40 | }
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| 41 | clearValue() {
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| 42 | this.hasDeoptedValue = false;
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| 43 | this.hasValue = false;
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| 44 | this.value = null;
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| 45 | }
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| 46 | reassign(path) {
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| 47 | this.constant = false;
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| 48 | if (this.constantViolations.includes(path)) {
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| 49 | return;
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| 50 | }
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| 51 | this.constantViolations.push(path);
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| 52 | }
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| 53 | reference(path) {
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| 54 | if (this.referencePaths.includes(path)) {
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| 55 | return;
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| 56 | }
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| 57 | this.referenced = true;
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| 58 | this.references++;
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| 59 | this.referencePaths.push(path);
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| 60 | }
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| 61 | dereference() {
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| 62 | this.references--;
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| 63 | this.referenced = !!this.references;
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| 64 | }
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| 65 | }
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| 66 | exports.default = Binding;
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| 67 | function isDeclaredInLoop(path) {
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| 68 | for (let {
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| 69 | parentPath,
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| 70 | key
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| 71 | } = path; parentPath; ({
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| 72 | parentPath,
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| 73 | key
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| 74 | } = parentPath)) {
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| 75 | if (parentPath.isFunctionParent()) return false;
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| 76 | if (parentPath.isWhile() || parentPath.isForXStatement() || parentPath.isForStatement() && key === "body") {
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| 77 | return true;
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| 78 | }
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| 79 | }
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| 80 | return false;
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| 81 | }
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| 82 |
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| 83 | //# sourceMappingURL=binding.js.map
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