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Merge pull request #456 from hildjj/library-mode
Add library mode
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| "use strict"; | ||
|
|
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| module.exports = { | ||
| "reject": [ | ||
| "chai", // Moved to es6 | ||
| "@types/chai", // Should match chai | ||
| ], | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| // @ts-check | ||
| "use strict"; | ||
|
|
||
| /** | ||
| * Intern strings or objects, so there is only one copy of each, by value. | ||
| * Objects may need to be converted to another representation before storing. | ||
| * Each inputs corresponds to a number, starting with 0. | ||
| * | ||
| * @template [T=string],[V=T] | ||
| */ | ||
| class Intern { | ||
| /** | ||
| * @typedef {object} InternOptions | ||
| * @property {(input: V) => string} [stringify=String] Represent the | ||
| * converted input as a string, for value comparison. | ||
| * @property {(input: T) => V} [convert=(x) => x] Convert the input to its | ||
| * stored form. Required if type V is not the same as type T. Return | ||
| * falsy value to have this input not be added; add() will return -1 in | ||
| * this case. | ||
| */ | ||
|
|
||
| /** | ||
| * @param {InternOptions} [options] | ||
| */ | ||
| constructor(options) { | ||
| /** @type {Required<InternOptions>} */ | ||
| this.options = { | ||
| stringify: String, | ||
| convert: x => /** @type {V} */ (/** @type {unknown} */ (x)), | ||
| ...options, | ||
| }; | ||
| /** @type {V[]} */ | ||
| this.items = []; | ||
| /** @type {Record<string, number>} */ | ||
| this.offsets = {}; | ||
| } | ||
|
|
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| /** | ||
| * Intern an item, getting it's asssociated number. Returns -1 for falsy | ||
| * inputs. O(1) with constants tied to the convert and stringify options. | ||
| * | ||
| * @param {T} input | ||
| * @return {number} | ||
| */ | ||
| add(input) { | ||
| const c = this.options.convert(input); | ||
| if (!c) { | ||
| return -1; | ||
| } | ||
| const s = this.options.stringify(c); | ||
| let num = this.offsets[s]; | ||
| if (num === undefined) { | ||
| num = this.items.push(c) - 1; | ||
| this.offsets[s] = num; | ||
| } | ||
| return num; | ||
| } | ||
|
|
||
| /** | ||
| * @param {number} i | ||
| * @returns {V} | ||
| */ | ||
| get(i) { | ||
| return this.items[i]; | ||
| } | ||
|
|
||
| /** | ||
| * @template U | ||
| * @param {(value: V, index: number, array: V[]) => U} fn | ||
| * @returns {U[]} | ||
| */ | ||
| map(fn) { | ||
| return this.items.map(fn); | ||
| } | ||
| } | ||
|
|
||
| module.exports = Intern; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // @ts-check | ||
| "use strict"; | ||
|
|
||
| /** | ||
| * Generate trampoline stubs for each rule imported into this namespace. | ||
| * | ||
| * @example | ||
| * import bar from "./lib.js" // Default rule imported into this namespace | ||
| * import {baz} from "./lib.js" // One rule imported into this namespace by name | ||
| * | ||
| * @type {PEG.Pass} | ||
| */ | ||
| function addImportedRules(ast) { | ||
| let libraryNumber = 0; | ||
| for (const imp of ast.imports) { | ||
| for (const what of imp.what) { | ||
| let original = undefined; | ||
| switch (what.type) { | ||
| case "import_binding_all": | ||
| // Don't create stub. | ||
| continue; | ||
| case "import_binding_default": | ||
| // Use the default (usually first) rule. | ||
| break; | ||
| case "import_binding": | ||
| original = what.binding; | ||
| break; | ||
| case "import_binding_rename": | ||
| original = what.rename; | ||
| break; | ||
| default: | ||
| throw new TypeError("Unknown binding type"); | ||
| } | ||
| ast.rules.push({ | ||
| type: "rule", | ||
| name: what.binding, | ||
| nameLocation: what.location, | ||
| expression: { | ||
| type: "library_ref", | ||
| name: original, | ||
| library: imp.from.module, | ||
| libraryNumber, | ||
| location: what.location, | ||
| }, | ||
| location: imp.from.location, | ||
| }); | ||
| } | ||
| libraryNumber++; | ||
| } | ||
| } | ||
|
|
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| module.exports = addImportedRules; |
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