Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/string-stream.h b/src/string-stream.h
new file mode 100644
index 0000000..323a6d6
--- /dev/null
+++ b/src/string-stream.h
@@ -0,0 +1,189 @@
+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * 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.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+// OWNER 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.
+
+#ifndef V8_STRING_STREAM_H_
+#define V8_STRING_STREAM_H_
+
+namespace v8 {
+namespace internal {
+
+
+class StringAllocator {
+ public:
+ virtual ~StringAllocator() {}
+ // Allocate a number of bytes.
+ virtual char* allocate(unsigned bytes) = 0;
+ // Allocate a larger number of bytes and copy the old buffer to the new one.
+ // bytes is an input and output parameter passing the old size of the buffer
+ // and returning the new size. If allocation fails then we return the old
+ // buffer and do not increase the size.
+ virtual char* grow(unsigned* bytes) = 0;
+};
+
+
+// Normal allocator uses new[] and delete[].
+class HeapStringAllocator: public StringAllocator {
+ public:
+ ~HeapStringAllocator() { DeleteArray(space_); }
+ char* allocate(unsigned bytes);
+ char* grow(unsigned* bytes);
+ private:
+ char* space_;
+};
+
+
+// Allocator for use when no new c++ heap allocation is allowed.
+// Given a preallocated buffer up front and does no allocation while
+// building message.
+class NoAllocationStringAllocator: public StringAllocator {
+ public:
+ NoAllocationStringAllocator(char* memory, unsigned size);
+ char* allocate(unsigned bytes) { return space_; }
+ char* grow(unsigned* bytes);
+ private:
+ unsigned size_;
+ char* space_;
+};
+
+
+class FmtElm {
+ public:
+ FmtElm(int value) : type_(INT) { // NOLINT
+ data_.u_int_ = value;
+ }
+ explicit FmtElm(double value) : type_(DOUBLE) {
+ data_.u_double_ = value;
+ }
+ FmtElm(const char* value) : type_(C_STR) { // NOLINT
+ data_.u_c_str_ = value;
+ }
+ FmtElm(const Vector<const uc16>& value) : type_(LC_STR) { // NOLINT
+ data_.u_lc_str_ = &value;
+ }
+ FmtElm(Object* value) : type_(OBJ) { // NOLINT
+ data_.u_obj_ = value;
+ }
+ FmtElm(Handle<Object> value) : type_(HANDLE) { // NOLINT
+ data_.u_handle_ = value.location();
+ }
+ FmtElm(void* value) : type_(POINTER) { // NOLINT
+ data_.u_pointer_ = value;
+ }
+ private:
+ friend class StringStream;
+ enum Type { INT, DOUBLE, C_STR, LC_STR, OBJ, HANDLE, POINTER };
+ Type type_;
+ union {
+ int u_int_;
+ double u_double_;
+ const char* u_c_str_;
+ const Vector<const uc16>* u_lc_str_;
+ Object* u_obj_;
+ Object** u_handle_;
+ void* u_pointer_;
+ } data_;
+};
+
+
+class StringStream {
+ public:
+ explicit StringStream(StringAllocator* allocator):
+ allocator_(allocator),
+ capacity_(kInitialCapacity),
+ length_(0),
+ buffer_(allocator_->allocate(kInitialCapacity)) {
+ buffer_[0] = 0;
+ }
+
+ ~StringStream() {
+ }
+
+ bool Put(char c);
+ bool Put(String* str);
+ bool Put(String* str, int start, int end);
+ void Add(Vector<const char> format, Vector<FmtElm> elms);
+ void Add(const char* format);
+ void Add(Vector<const char> format);
+ void Add(const char* format, FmtElm arg0);
+ void Add(const char* format, FmtElm arg0, FmtElm arg1);
+ void Add(const char* format, FmtElm arg0, FmtElm arg1, FmtElm arg2);
+ void Add(const char* format,
+ FmtElm arg0,
+ FmtElm arg1,
+ FmtElm arg2,
+ FmtElm arg3);
+
+ // Getting the message out.
+ void OutputToStdOut();
+ void Log();
+ Handle<String> ToString();
+ SmartPointer<const char> ToCString() const;
+
+ // Object printing support.
+ void PrintName(Object* o);
+ void PrintFixedArray(FixedArray* array, unsigned int limit);
+ void PrintByteArray(ByteArray* ba);
+ void PrintUsingMap(JSObject* js_object);
+ void PrintPrototype(JSFunction* fun, Object* receiver);
+ void PrintSecurityTokenIfChanged(Object* function);
+ // NOTE: Returns the code in the output parameter.
+ void PrintFunction(Object* function, Object* receiver, Code** code);
+
+ // Reset the stream.
+ void Reset() {
+ length_ = 0;
+ buffer_[0] = 0;
+ }
+
+ // Mentioned object cache support.
+ void PrintMentionedObjectCache();
+ static void ClearMentionedObjectCache();
+#ifdef DEBUG
+ static bool IsMentionedObjectCacheClear();
+#endif
+
+
+ static const int kInitialCapacity = 16;
+
+ private:
+ void PrintObject(Object* obj);
+
+ StringAllocator* allocator_;
+ unsigned capacity_;
+ unsigned length_; // does not include terminating 0-character
+ char* buffer_;
+
+ bool full() const { return (capacity_ - length_) == 1; }
+ int space() const { return capacity_ - length_; }
+
+ DISALLOW_IMPLICIT_CONSTRUCTORS(StringStream);
+};
+
+
+} } // namespace v8::internal
+
+#endif // V8_STRING_STREAM_H_