1 files changed, 80 insertions, 0 deletions
diff --git a/Source/WebCore/Modules/fetch/FetchInternals.js b/Source/WebCore/Modules/fetch/FetchInternals.js
new file mode 100644
index 000000000..3b91cd3bd
--- /dev/null
+++ b/Source/WebCore/Modules/fetch/FetchInternals.js
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2016 Apple Inc.
+ *
+ * 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. ``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
+ * 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.
+ */
+
+// @conditional=ENABLE(FETCH_API)
+// @internal
+
+function fillFetchHeaders(headers, headersInit)
+{
+    "use strict";
+
+    if (headersInit === @undefined)
+        return;
+
+    if (headersInit instanceof @Headers) {
+        @Headers.prototype.@fillFromJS.@call(headers, headersInit);
+        return;
+    }
+
+    if (@isArray(headersInit)) {
+        for (let i = 0; i < headersInit.length; i++) {
+            let header = headersInit[i];
+            if (header.length !== 2)
+                @throwTypeError("headersInit sequence items should contain two values");
+            @Headers.prototype.@appendFromJS.@call(headers, header[0], header[1]);
+        }
+        return this;
+    }
+
+    let propertyNames = @Object.@getOwnPropertyNames(headersInit);
+    for (let i = 0; i < propertyNames.length; ++i) {
+        let name = propertyNames[i];
+        @Headers.prototype.@appendFromJS.@call(headers, name, headersInit[name]);
+    }
+}
+
+function consumeStream(response, type)
+{
+    @assert(response instanceof @Response);
+    @assert(response.@body instanceof @ReadableStream);
+
+    if (@isReadableStreamDisturbed(response.@body))
+        return @Promise.@reject(new @TypeError("Cannot consume a disturbed Response body ReadableStream"));
+
+    try {
+        let reader = new @ReadableStreamDefaultReader(response.@body);
+
+        @Response.prototype.@startConsumingStream.@call(response, type);
+        let pull = (result) => {
+            if (result.done)
+                return @Response.prototype.@finishConsumingStream.@call(response);
+            @Response.prototype.@consumeChunk.@call(response, result.value);
+            return @Promise.prototype.@then.@call(@readableStreamDefaultReaderRead(reader), pull);
+        }
+        return @Promise.prototype.@then.@call(@readableStreamDefaultReaderRead(reader), pull);
+    } catch (e) {
+        return @Promise.@reject(e);
+    }
+}