change the directory structurejarred/rename

1 files changed, 116 insertions, 0 deletions

diff --git a/src/bun.js/builtins/js/TransformStream.js b/src/bun.js/builtins/js/TransformStream.js
new file mode 100644
index 000000000..8d82d87d8
--- /dev/null
+++ b/src/bun.js/builtins/js/TransformStream.js
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2020 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+function initializeTransformStream()
+{
+    "use strict";
+
+    let transformer = arguments[0];
+
+    // This is the path for CreateTransformStream.
+    if (@isObject(transformer) && @getByIdDirectPrivate(transformer, "TransformStream"))
+        return this;
+
+    let writableStrategy = arguments[1];
+    let readableStrategy = arguments[2];
+
+    if (transformer === @undefined)
+        transformer = null;
+
+    if (readableStrategy === @undefined)
+        readableStrategy = { };
+
+    if (writableStrategy === @undefined)
+        writableStrategy = { };
+
+    let transformerDict = { };
+    if (transformer !== null) {
+        if ("start" in transformer) {
+            transformerDict["start"] = transformer["start"];
+            if (typeof transformerDict["start"] !== "function")
+                @throwTypeError("transformer.start should be a function");
+        }
+        if ("transform" in transformer) {
+            transformerDict["transform"] = transformer["transform"];
+            if (typeof transformerDict["transform"] !== "function")
+                @throwTypeError("transformer.transform should be a function");
+        }
+        if ("flush" in transformer) {
+            transformerDict["flush"] = transformer["flush"];
+            if (typeof transformerDict["flush"] !== "function")
+                @throwTypeError("transformer.flush should be a function");
+        }
+
+        if ("readableType" in transformer)
+            @throwRangeError("TransformStream transformer has a readableType");
+        if ("writableType" in transformer)
+            @throwRangeError("TransformStream transformer has a writableType");
+    }
+
+    const readableHighWaterMark = @extractHighWaterMark(readableStrategy, 0);
+    const readableSizeAlgorithm = @extractSizeAlgorithm(readableStrategy);
+
+    const writableHighWaterMark = @extractHighWaterMark(writableStrategy, 1);
+    const writableSizeAlgorithm = @extractSizeAlgorithm(writableStrategy);
+
+    const startPromiseCapability = @newPromiseCapability(@Promise);
+    @initializeTransformStream(this, startPromiseCapability.@promise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm);
+    @setUpTransformStreamDefaultControllerFromTransformer(this, transformer, transformerDict);
+
+    if ("start" in transformerDict) {
+        const controller = @getByIdDirectPrivate(this, "controller");
+        const startAlgorithm = () => @promiseInvokeOrNoopMethodNoCatch(transformer, transformerDict["start"], [controller]);
+        startAlgorithm().@then(() => {
+            // FIXME: We probably need to resolve start promise with the result of the start algorithm.
+            startPromiseCapability.@resolve.@call();
+        }, (error) => {
+            startPromiseCapability.@reject.@call(@undefined, error);
+        });
+    } else
+        startPromiseCapability.@resolve.@call();
+
+    return this;
+}
+
+@getter
+function readable()
+{
+    "use strict";
+
+    if (!@isTransformStream(this))
+        throw @makeThisTypeError("TransformStream", "readable");
+
+    return @getByIdDirectPrivate(this, "readable");
+}
+
+function writable()
+{
+    "use strict";
+
+    if (!@isTransformStream(this))
+        throw @makeThisTypeError("TransformStream", "writable");
+
+    return @getByIdDirectPrivate(this, "writable");
+}