Initial commit of make.typed

lib/make/typed.js

@@ -0,0 +1,79 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+make.typed = {
+  byte: function (limit = null) {
+    // [−128, 127]
+    let value = (limit !== null) ? random.number(limit) : random.number(129)
+    value = random.chance(10) ? -value : value
+    return 'new Uint8Array([' + value + '])[0]'
+  },
+  octet: function (limit = null) {
+    // [0, 255]
+    let value = (limit !== null) ? random.number(limit) : random.number(256)
+    return 'new Int8Array([' + value + '])[0]'
+  },
+  short: function (limit = null) {
+    // [−32768, 32767]
+    let value = (limit !== null) ? random.number(limit) : random.number(32769)
+    value = random.chance(10) ? -value : value
+    return 'new Int16Array([' + value + '])[0]'
+  },
+  unsignedShort: function (limit = null) {
+    // [0, 65535]
+    let value = (limit !== null) ? random.number(limit) : random.number(65535)
+    return 'new Uint16Array([' + value + '])[0]'
+  },
+  long: function (limit = null) {
+    // [−2147483648, 2147483647]
+    let value = (limit !== null) ? random.number(limit) : random.number(2147483649)
+    value = random.chance(10) ? -value : value
+    return 'new Int32Array([' + value + '])[0]'
+  },
+  unsignedLong: function (limit = null) {
+    // [0, 4294967295]
+    let value = (limit !== null) ? random.number(limit) : random.number(4294967296)
+    return 'new Uint32Array([' + value + '])[0]'
+  },
+  // ToDo: Add support for longlong and ulonglong
+  /*
+   longLong: function () {},
+   unsignedLongLong: function () {},
+   */
+  float: function (limit = null) {
+    let base = (limit !== null) ? random.number(limit) : random.number()
+    return 'new Float32Array([' + (base + random.float()) + '])[0]'
+  },
+  unrestrictedFloat: function (limit = null) {
+    if (random.chance(100)) {
+      return random.pick([NaN, +Infinity, -Infinity])
+    } else {
+      let base = (limit !== null) ? random.number(limit) : random.number()
+      return 'new Float32Array([' + (base + random.float()) + '])[0]'
+    }
+  },
+  double: function (limit = null) {
+    let base = (limit !== null) ? random.number(limit) : random.number()
+    return 'new Float64Array([' + (base + random.float()) + '])[0]'
+  },
+  unrestrictedDouble: function (limit = null) {
+    if (random.chance(100)) {
+      return random.pick([NaN, +Infinity, -Infinity])
+    } else {
+      let base = (limit !== null) ? random.number(limit) : random.number()
+      return 'new Float64Array([' + (base + random.float()) + '])[0]'
+    }
+  },
+  any: function () {
+    let value = random.choose([
+      [1, [this.byte, this.octet]],
+      [1, [this.short, this.unsignedShort]],
+      [1, [this.long, this.unsignedLong]],
+      [1, [this.float, this.unrestrictedFloat]],
+      [1, [this.double, this.unrestrictedDouble]],
+      [1, [this.range, make.number.tiny]]
+    ])
+    return random.chance(10) ? -value : value
+  }
+}