import full versions of dependency libraries!

1 files changed, 577 insertions, 0 deletions

diff --git a/deps/v8/src/string-stream.cc b/deps/v8/src/string-stream.cc
new file mode 100644
index 0000000000..f311e20bde
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+++ b/deps/v8/src/string-stream.cc
@@ -0,0 +1,577 @@
+// 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.
+
+#include "v8.h"
+
+#include "factory.h"
+#include "string-stream.h"
+
+namespace v8 { namespace internal {
+
+static const int kMentionedObjectCacheMaxSize = 256;
+static List<HeapObject*, PreallocatedStorage>* debug_object_cache = NULL;
+static Object* current_security_token = NULL;
+
+
+char* HeapStringAllocator::allocate(unsigned bytes) {
+  space_ = NewArray<char>(bytes);
+  return space_;
+}
+
+
+NoAllocationStringAllocator::NoAllocationStringAllocator(unsigned bytes) {
+  size_ = bytes;
+  space_ = NewArray<char>(bytes);
+}
+
+
+NoAllocationStringAllocator::NoAllocationStringAllocator(char* memory,
+                                                         unsigned size) {
+  size_ = size;
+  space_ = memory;
+}
+
+
+bool StringStream::Put(char c) {
+  if (space() == 0) return false;
+  if (length_ >= capacity_ - 1) {
+    unsigned new_capacity = capacity_;
+    char* new_buffer = allocator_->grow(&new_capacity);
+    if (new_capacity > capacity_) {
+      capacity_ = new_capacity;
+      buffer_ = new_buffer;
+    } else {
+      // Indicate truncation with dots.
+      memset(cursor(), '.', space());
+      length_ = capacity_;
+      buffer_[length_ - 2] = '\n';
+      buffer_[length_ - 1] = '\0';
+      return false;
+    }
+  }
+  buffer_[length_] = c;
+  buffer_[length_ + 1] = '\0';
+  length_++;
+  return true;
+}
+
+
+// A control character is one that configures a format element.  For
+// instance, in %.5s, .5 are control characters.
+static bool IsControlChar(char c) {
+  switch (c) {
+  case '0': case '1': case '2': case '3': case '4': case '5':
+  case '6': case '7': case '8': case '9': case '.': case '-':
+    return true;
+  default:
+    return false;
+  }
+}
+
+
+void StringStream::Add(Vector<const char> format, Vector<FmtElm> elms) {
+  // If we already ran out of space then return immediately.
+  if (space() == 0)
+    return;
+  int offset = 0;
+  int elm = 0;
+  while (offset < format.length()) {
+    if (format[offset] != '%' || elm == elms.length()) {
+      Put(format[offset]);
+      offset++;
+      continue;
+    }
+    // Read this formatting directive into a temporary buffer
+    EmbeddedVector<char, 24> temp;
+    int format_length = 0;
+    // Skip over the whole control character sequence until the
+    // format element type
+    temp[format_length++] = format[offset++];
+    while (offset < format.length() && IsControlChar(format[offset]))
+      temp[format_length++] = format[offset++];
+    if (offset >= format.length())
+      return;
+    char type = format[offset];
+    temp[format_length++] = type;
+    temp[format_length] = '\0';
+    offset++;
+    FmtElm current = elms[elm++];
+    switch (type) {
+    case 's': {
+      ASSERT_EQ(FmtElm::C_STR, current.type_);
+      const char* value = current.data_.u_c_str_;
+      Add(value);
+      break;
+    }
+    case 'w': {
+      ASSERT_EQ(FmtElm::LC_STR, current.type_);
+      Vector<const uc16> value = *current.data_.u_lc_str_;
+      for (int i = 0; i < value.length(); i++)
+        Put(static_cast<char>(value[i]));
+      break;
+    }
+    case 'o': {
+      ASSERT_EQ(FmtElm::OBJ, current.type_);
+      Object* obj = current.data_.u_obj_;
+      PrintObject(obj);
+      break;
+    }
+    case 'k': {
+      ASSERT_EQ(FmtElm::INT, current.type_);
+      int value = current.data_.u_int_;
+      if (0x20 <= value && value <= 0x7F) {
+        Put(value);
+      } else if (value <= 0xff) {
+        Add("\\x%02x", value);
+      } else {
+        Add("\\u%04x", value);
+      }
+      break;
+    }
+    case 'i': case 'd': case 'u': case 'x': case 'c': case 'p': case 'X': {
+      int value = current.data_.u_int_;
+      EmbeddedVector<char, 24> formatted;
+      int length = OS::SNPrintF(formatted, temp.start(), value);
+      Add(Vector<const char>(formatted.start(), length));
+      break;
+    }
+    case 'f': case 'g': case 'G': case 'e': case 'E': {
+      double value = current.data_.u_double_;
+      EmbeddedVector<char, 28> formatted;
+      OS::SNPrintF(formatted, temp.start(), value);
+      Add(formatted.start());
+      break;
+    }
+    default:
+      UNREACHABLE();
+      break;
+    }
+  }
+
+  // Verify that the buffer is 0-terminated
+  ASSERT(buffer_[length_] == '\0');
+}
+
+
+void StringStream::PrintObject(Object* o) {
+  o->ShortPrint(this);
+  if (o->IsString()) {
+    if (String::cast(o)->length() <= String::kMaxMediumStringSize) {
+      return;
+    }
+  } else if (o->IsNumber() || o->IsOddball()) {
+    return;
+  }
+  if (o->IsHeapObject()) {
+    for (int i = 0; i < debug_object_cache->length(); i++) {
+      if ((*debug_object_cache)[i] == o) {
+        Add("#%d#", i);
+        return;
+      }
+    }
+    if (debug_object_cache->length() < kMentionedObjectCacheMaxSize) {
+      Add("#%d#", debug_object_cache->length());
+      debug_object_cache->Add(HeapObject::cast(o));
+    } else {
+      Add("@%p", o);
+    }
+  }
+}
+
+
+void StringStream::Add(const char* format) {
+  Add(CStrVector(format));
+}
+
+
+void StringStream::Add(Vector<const char> format) {
+  Add(format, Vector<FmtElm>::empty());
+}
+
+
+void StringStream::Add(const char* format, FmtElm arg0) {
+  const char argc = 1;
+  FmtElm argv[argc] = { arg0 };
+  Add(CStrVector(format), Vector<FmtElm>(argv, argc));
+}
+
+
+void StringStream::Add(const char* format, FmtElm arg0, FmtElm arg1) {
+  const char argc = 2;
+  FmtElm argv[argc] = { arg0, arg1 };
+  Add(CStrVector(format), Vector<FmtElm>(argv, argc));
+}
+
+
+void StringStream::Add(const char* format, FmtElm arg0, FmtElm arg1,
+                       FmtElm arg2) {
+  const char argc = 3;
+  FmtElm argv[argc] = { arg0, arg1, arg2 };
+  Add(CStrVector(format), Vector<FmtElm>(argv, argc));
+}
+
+
+void StringStream::Add(const char* format, FmtElm arg0, FmtElm arg1,
+                       FmtElm arg2, FmtElm arg3) {
+  const char argc = 4;
+  FmtElm argv[argc] = { arg0, arg1, arg2, arg3 };
+  Add(CStrVector(format), Vector<FmtElm>(argv, argc));
+}
+
+
+SmartPointer<const char> StringStream::ToCString() {
+  char* str = NewArray<char>(length_ + 1);
+  memcpy(str, buffer_, length_);
+  str[length_] = '\0';
+  return SmartPointer<const char>(str);
+}
+
+
+void StringStream::Log() {
+  LOG(StringEvent("StackDump", buffer_));
+}
+
+
+void StringStream::OutputToStdOut() {
+  // Dump the output to stdout, but make sure to break it up into
+  // manageable chunks to avoid losing parts of the output in the OS
+  // printing code. This is a problem on Windows in particular; see
+  // the VPrint() function implementations in platform-win32.cc.
+  unsigned position = 0;
+  for (unsigned next; (next = position + 2048) < length_; position = next) {
+    char save = buffer_[next];
+    buffer_[next] = '\0';
+    internal::PrintF("%s", &buffer_[position]);
+    buffer_[next] = save;
+  }
+  internal::PrintF("%s", &buffer_[position]);
+}
+
+
+Handle<String> StringStream::ToString() {
+  return Factory::NewStringFromUtf8(Vector<const char>(buffer_, length_));
+}
+
+
+void StringStream::ClearMentionedObjectCache() {
+  current_security_token = NULL;
+  if (debug_object_cache == NULL) {
+    debug_object_cache = new List<HeapObject*, PreallocatedStorage>(0);
+  }
+  debug_object_cache->Clear();
+}
+
+
+#ifdef DEBUG
+bool StringStream::IsMentionedObjectCacheClear() {
+  return (debug_object_cache->length() == 0);
+}
+#endif
+
+
+bool StringStream::Put(String* str) {
+  return Put(str, 0, str->length());
+}
+
+
+bool StringStream::Put(String* str, int start, int end) {
+  StringInputBuffer name_buffer(str);
+  name_buffer.Seek(start);
+  for (int i = start; i < end && name_buffer.has_more(); i++) {
+    int c = name_buffer.GetNext();
+    if (c >= 127 || c < 32) {
+      c = '?';
+    }
+    if (!Put(c)) {
+      return false;  // Output was truncated.
+    }
+  }
+  return true;
+}
+
+
+void StringStream::PrintName(Object* name) {
+  if (name->IsString()) {
+    String* str = String::cast(name);
+    if (str->length() > 0) {
+      Put(str);
+    } else {
+      Add("/* anonymous */");
+    }
+  } else {
+    Add("%o", name);
+  }
+}
+
+
+void StringStream::PrintUsingMap(JSObject* js_object) {
+  Map* map = js_object->map();
+  if (!Heap::Contains(map) ||
+      !map->IsHeapObject() ||
+      !map->IsMap()) {
+    Add("<Invalid map>\n");
+    return;
+  }
+  for (DescriptorReader r(map->instance_descriptors()); !r.eos(); r.advance()) {
+    switch (r.type()) {
+      case FIELD: {
+        Object* key = r.GetKey();
+        if (key->IsString() || key->IsNumber()) {
+          int len = 3;
+          if (key->IsString()) {
+            len = String::cast(key)->length();
+          }
+          for (; len < 18; len++)
+            Put(' ');
+          if (key->IsString()) {
+            Put(String::cast(key));
+          } else {
+            key->ShortPrint();
+          }
+          Add(": ");
+          Object* value = js_object->FastPropertyAt(r.GetFieldIndex());
+          Add("%o\n", value);
+        }
+      }
+      break;
+      default:
+      break;
+    }
+  }
+}
+
+
+void StringStream::PrintFixedArray(FixedArray* array, unsigned int limit) {
+  for (unsigned int i = 0; i < 10 && i < limit; i++) {
+    Object* element = array->get(i);
+    if (element != Heap::the_hole_value()) {
+      for (int len = 1; len < 18; len++)
+        Put(' ');
+      Add("%d: %o\n", i, array->get(i));
+    }
+  }
+  if (limit >= 10) {
+    Add("                  ...\n");
+  }
+}
+
+
+void StringStream::PrintByteArray(ByteArray* byte_array) {
+  unsigned int limit = byte_array->length();
+  for (unsigned int i = 0; i < 10 && i < limit; i++) {
+    byte b = byte_array->get(i);
+    Add("             %d: %3d 0x%02x", i, b, b);
+    if (b >= ' ' && b <= '~') {
+      Add(" '%c'", b);
+    } else if (b == '\n') {
+      Add(" '\n'");
+    } else if (b == '\r') {
+      Add(" '\r'");
+    } else if (b >= 1 && b <= 26) {
+      Add(" ^%c", b + 'A' - 1);
+    }
+    Add("\n");
+  }
+  if (limit >= 10) {
+    Add("                  ...\n");
+  }
+}
+
+
+void StringStream::PrintMentionedObjectCache() {
+  Add("==== Key         ============================================\n\n");
+  for (int i = 0; i < debug_object_cache->length(); i++) {
+    HeapObject* printee = (*debug_object_cache)[i];
+    Add(" #%d# %p: ", i, printee);
+    printee->ShortPrint(this);
+    Add("\n");
+    if (printee->IsJSObject()) {
+      if (printee->IsJSValue()) {
+        Add("           value(): %o\n", JSValue::cast(printee)->value());
+      }
+      PrintUsingMap(JSObject::cast(printee));
+      if (printee->IsJSArray()) {
+        JSArray* array = JSArray::cast(printee);
+        if (array->HasFastElements()) {
+          unsigned int limit = FixedArray::cast(array->elements())->length();
+          unsigned int length =
+            static_cast<uint32_t>(JSArray::cast(array)->length()->Number());
+          if (length < limit) limit = length;
+          PrintFixedArray(FixedArray::cast(array->elements()), limit);
+        }
+      }
+    } else if (printee->IsByteArray()) {
+      PrintByteArray(ByteArray::cast(printee));
+    } else if (printee->IsFixedArray()) {
+      unsigned int limit = FixedArray::cast(printee)->length();
+      PrintFixedArray(FixedArray::cast(printee), limit);
+    }
+  }
+}
+
+
+void StringStream::PrintSecurityTokenIfChanged(Object* f) {
+  if (!f->IsHeapObject() || !Heap::Contains(HeapObject::cast(f))) {
+    return;
+  }
+  Map* map = HeapObject::cast(f)->map();
+  if (!map->IsHeapObject() ||
+      !Heap::Contains(map) ||
+      !map->IsMap() ||
+      !f->IsJSFunction()) {
+    return;
+  }
+
+  JSFunction* fun = JSFunction::cast(f);
+  Object* perhaps_context = fun->unchecked_context();
+  if (perhaps_context->IsHeapObject() &&
+      Heap::Contains(HeapObject::cast(perhaps_context)) &&
+      perhaps_context->IsContext()) {
+    Context* context = fun->context();
+    if (!Heap::Contains(context)) {
+      Add("(Function context is outside heap)\n");
+      return;
+    }
+    Object* token = context->global_context()->security_token();
+    if (token != current_security_token) {
+      Add("Security context: %o\n", token);
+      current_security_token = token;
+    }
+  } else {
+    Add("(Function context is corrupt)\n");
+  }
+}
+
+
+void StringStream::PrintFunction(Object* f, Object* receiver, Code** code) {
+  if (f->IsHeapObject() &&
+      Heap::Contains(HeapObject::cast(f)) &&
+      Heap::Contains(HeapObject::cast(f)->map()) &&
+      HeapObject::cast(f)->map()->IsMap()) {
+    if (f->IsJSFunction()) {
+      JSFunction* fun = JSFunction::cast(f);
+      // Common case: on-stack function present and resolved.
+      PrintPrototype(fun, receiver);
+      *code = fun->code();
+    } else if (f->IsSymbol()) {
+      // Unresolved and megamorphic calls: Instead of the function
+      // we have the function name on the stack.
+      PrintName(f);
+      Add("/* unresolved */ ");
+    } else {
+      // Unless this is the frame of a built-in function, we should always have
+      // the callee function or name on the stack. If we don't, we have a
+      // problem or a change of the stack frame layout.
+      Add("%o", f);
+      Add("/* warning: no JSFunction object or function name found */ ");
+    }
+    /* } else if (is_trampoline()) {
+       Print("trampoline ");
+    */
+  } else {
+    if (!f->IsHeapObject()) {
+      Add("/* warning: 'function' was not a heap object */ ");
+      return;
+    }
+    if (!Heap::Contains(HeapObject::cast(f))) {
+      Add("/* warning: 'function' was not on the heap */ ");
+      return;
+    }
+    if (!Heap::Contains(HeapObject::cast(f)->map())) {
+      Add("/* warning: function's map was not on the heap */ ");
+      return;
+    }
+    if (!HeapObject::cast(f)->map()->IsMap()) {
+      Add("/* warning: function's map was not a valid map */ ");
+      return;
+    }
+    Add("/* warning: Invalid JSFunction object found */ ");
+  }
+}
+
+
+void StringStream::PrintPrototype(JSFunction* fun, Object* receiver) {
+  Object* name = fun->shared()->name();
+  bool print_name = false;
+  for (Object* p = receiver; p != Heap::null_value(); p = p->GetPrototype()) {
+    if (p->IsJSObject()) {
+      Object* key = JSObject::cast(p)->SlowReverseLookup(fun);
+      if (key != Heap::undefined_value()) {
+        if (!name->IsString() ||
+            !key->IsString() ||
+            !String::cast(name)->Equals(String::cast(key))) {
+          print_name = true;
+        }
+        if (name->IsString() && String::cast(name)->length() == 0) {
+          print_name = false;
+        }
+        name = key;
+      }
+    } else {
+      print_name = true;
+    }
+  }
+  PrintName(name);
+  // Also known as - if the name in the function doesn't match the name under
+  // which it was looked up.
+  if (print_name) {
+    Add("(aka ");
+    PrintName(fun->shared()->name());
+    Put(')');
+  }
+}
+
+
+char* HeapStringAllocator::grow(unsigned* bytes) {
+  unsigned new_bytes = *bytes * 2;
+  // Check for overflow.
+  if (new_bytes <= *bytes) {
+    return space_;
+  }
+  char* new_space = NewArray<char>(new_bytes);
+  if (new_space == NULL) {
+    return space_;
+  }
+  memcpy(new_space, space_, *bytes);
+  *bytes = new_bytes;
+  DeleteArray(space_);
+  space_ = new_space;
+  return new_space;
+}
+
+
+char* NoAllocationStringAllocator::grow(unsigned* bytes) {
+  unsigned new_bytes = *bytes * 2;
+  if (new_bytes > size_) {
+    new_bytes = size_;
+  }
+  *bytes = new_bytes;
+  return space_;
+}
+
+
+} }  // namespace v8::internal