webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 165 insertions, 0 deletions

diff --git a/Source/WebCore/domjit/generate-abstract-heap.rb b/Source/WebCore/domjit/generate-abstract-heap.rb
new file mode 100644
index 000000000..b7412e85d
--- /dev/null
+++ b/Source/WebCore/domjit/generate-abstract-heap.rb
@@ -0,0 +1,165 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 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.
+
+require "yaml"
+
+class HeapRange
+    attr_reader :first, :last
+    def initialize(first, last)
+        @first = first
+        @last = last
+    end
+end
+
+class AbstractHeap
+    attr_reader :range, :name, :parent
+    def initialize(name, tree)
+        @name = name
+        @parent = nil
+        if tree.nil?
+            @children = []
+        else
+            @children = tree.map {|key, value| AbstractHeap.new(key, value) }
+        end
+        @range = nil
+    end
+
+    def setParent(parent)
+        parent.children.push(self)
+        @parent = parent
+    end
+
+    def compute(start)
+        current = start
+        if @children.empty?
+            @range = HeapRange.new(start, current + 1)
+            return
+        end
+
+        @children.each {|child|
+            child.compute(current)
+            current = child.range.last
+        }
+
+        @range = HeapRange.new(start, current)
+    end
+
+    def dump output
+        shallowDump(output)
+        if @parent
+            output.print "-> "
+            @parent.dump(output)
+        end
+    end
+
+    def shallowDump(output)
+        output.print "#{@name}<#{@range.first},#{@range.last}>"
+    end
+
+    def deepDump output, indent
+        printIndent(output, indent)
+        shallowDump(output)
+        if @children.empty?
+            output.print "\n"
+            return
+        end
+
+        output.print ":\n"
+        @children.each {|child|
+            child.deepDump(output, indent + 1)
+        }
+    end
+
+    def generate output
+        output.puts "constexpr JSC::DOMJIT::HeapRange #{@name}(JSC::DOMJIT::HeapRange::ConstExpr, #{@range.first}, #{@range.last});"
+        @children.each {|child|
+            child.generate(output)
+        }
+    end
+
+private
+    def printIndent output, indent
+        indent.times {
+            output.print "    "
+        }
+    end
+end
+
+header = <<-EOS
+/*
+ * Copyright (C) 2016 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. ``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.
+ */
+// Auto-generated file. Do not modify.
+
+#pragma once
+
+#include <domjit/DOMJITHeapRange.h>
+
+namespace WebCore { namespace DOMJIT { namespace AbstractHeapRepository {
+EOS
+
+footer = <<-EOS
+} } }
+EOS
+
+$inputFileName = ARGV.shift
+$outputFileName = ARGV.shift
+File.open($outputFileName, "w") {|output|
+    File.open($inputFileName, "rb") {|file|
+        tree = YAML::load(file.read())
+        heap = tree.map {|key, value|
+            AbstractHeap.new(key, value)
+        }.first
+        heap.compute(0)
+
+        output.print(header)
+        output.puts("/* DOMJIT Abstract Heap Tree.")
+        heap.deepDump(output, 0)
+        output.puts("*/")
+        heap.generate(output)
+        output.print(footer)
+    }
+}