flow like the river

BACK_BACK/node_modules/parcel-bundler/lib/assets/GLSLAsset.js

@@ -0,0 +1,100 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
+
+function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
+
+const Asset = require('../Asset');
+
+const localRequire = require('../utils/localRequire');
+
+const path = require('path');
+
+const _require = require('@parcel/utils'),
+      promisify = _require.promisify;
+
+const Resolver = require('../Resolver');
+
+class GLSLAsset extends Asset {
+  constructor(name, options) {
+    super(name, options);
+    this.type = 'js';
+  }
+
+  parse() {
+    var _this = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      const glslifyDeps = yield localRequire('glslify-deps', _this.name); // Use the Parcel resolver rather than the default glslify one.
+      // This adds support for parcel features like aliases, and tilde paths.
+
+      const resolver = new Resolver({
+        extensions: ['.glsl', '.vert', '.frag'],
+        rootDir: _this.options.rootDir
+      }); // Parse and collect dependencies with glslify-deps
+
+      let cwd = path.dirname(_this.name);
+      let depper = glslifyDeps({
+        cwd,
+        resolve: function () {
+          var _resolve = (0, _asyncToGenerator2.default)(function* (target, opts, next) {
+            try {
+              let res = yield resolver.resolve(target, path.join(opts.basedir, 'index'));
+              next(null, res.path);
+            } catch (err) {
+              next(err);
+            }
+          });
+
+          function resolve(_x, _x2, _x3) {
+            return _resolve.apply(this, arguments);
+          }
+
+          return resolve;
+        }()
+      });
+      return promisify(depper.inline.bind(depper))(_this.contents, cwd);
+    })();
+  }
+
+  collectDependencies() {
+    var _iterator = _createForOfIteratorHelper(this.ast),
+        _step;
+
+    try {
+      for (_iterator.s(); !(_step = _iterator.n()).done;) {
+        let dep = _step.value;
+
+        if (!dep.entry) {
+          this.addDependency(dep.file, {
+            includedInParent: true
+          });
+        }
+      }
+    } catch (err) {
+      _iterator.e(err);
+    } finally {
+      _iterator.f();
+    }
+  }
+
+  generate() {
+    var _this2 = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      // Generate the bundled glsl file
+      const glslifyBundle = yield localRequire('glslify-bundle', _this2.name);
+      let glsl = glslifyBundle(_this2.ast);
+      return `module.exports=${JSON.stringify(glsl)};`;
+    })();
+  }
+
+}
+
+module.exports = GLSLAsset;