VM: Re-format to use at most one newline between functions

runtime/lib/string.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/bootstrap_natives.h"
 
 #include "include/dart_api.h"
+#include "vm/dart_api_impl.h"
 #include "vm/exceptions.h"
-#include "vm/dart_api_impl.h"
 #include "vm/isolate.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
 #include "vm/unicode.h"
 
 namespace dart {
 
 DEFINE_NATIVE_ENTRY(String_fromEnvironment, 3) {
   GET_NON_NULL_NATIVE_ARGUMENT(String, name, arguments->NativeArgAt(1));
   GET_NATIVE_ARGUMENT(String, default_value, arguments->NativeArgAt(2));
   // Call the embedder to supply us with the environment.
   const String& env_value =
       String::Handle(Api::GetEnvironmentValue(thread, name));
   if (!env_value.IsNull()) {
     return Symbols::New(thread, env_value);
   }
   return default_value.raw();
 }
 
-
 DEFINE_NATIVE_ENTRY(StringBase_createFromCodePoints, 3) {
   GET_NON_NULL_NATIVE_ARGUMENT(Instance, list, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end_obj, arguments->NativeArgAt(2));
 
   Array& a = Array::Handle();
   intptr_t length;
   if (list.IsGrowableObjectArray()) {
     const GrowableObjectArray& growableArray = GrowableObjectArray::Cast(list);
     a ^= growableArray.data();
@@ skipping 41 matching lines @@
       }
     }
     utf32_array[i] = value32;
   }
   if (is_one_byte_string) {
     return OneByteString::New(utf32_array, array_len, Heap::kNew);
   }
   return TwoByteString::New(utf16_len, utf32_array, array_len, Heap::kNew);
 }
 
-
 DEFINE_NATIVE_ENTRY(StringBase_substringUnchecked, 3) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end_obj, arguments->NativeArgAt(2));
 
   intptr_t start = start_obj.Value();
   intptr_t end = end_obj.Value();
   return String::SubString(receiver, start, (end - start));
 }
 
-
 // Return the bitwise-or of all characters in the slice from start to end.
 static uint16_t CharacterLimit(const String& string,
                                intptr_t start,
                                intptr_t end) {
   ASSERT(string.IsTwoByteString() || string.IsExternalTwoByteString());
   // Maybe do loop unrolling, and handle two uint16_t in a single uint32_t
   // operation.
   NoSafepointScope no_safepoint;
   uint16_t result = 0;
   if (string.IsTwoByteString()) {
@@ skipping 40 matching lines @@
       }
       uint16_t char_limit = CharacterLimit(base, slice_start, slice_end);
       if (char_limit > 0xff) {
         return false;
       }
     }
   }
   return true;
 }
 
-
 DEFINE_NATIVE_ENTRY(StringBase_joinReplaceAllResult, 4) {
   const String& base = String::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(GrowableObjectArray, matches_growable,
                                arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, length_obj, arguments->NativeArgAt(2));
   GET_NON_NULL_NATIVE_ARGUMENT(Bool, is_onebyte_obj, arguments->NativeArgAt(3));
 
   intptr_t len = matches_growable.Length();
   const Array& matches = Array::Handle(zone, matches_growable.data());
 
@@ skipping 77 matching lines @@
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   ASSERT(receiver.IsOneByteString());
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end_obj, arguments->NativeArgAt(2));
 
   const intptr_t start = start_obj.Value();
   const intptr_t end = end_obj.Value();
   return OneByteString::New(receiver, start, end - start, Heap::kNew);
 }
 
-
 // This is high-performance code.
 DEFINE_NATIVE_ENTRY(OneByteString_splitWithCharCode, 2) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   ASSERT(receiver.IsOneByteString());
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, smi_split_code, arguments->NativeArgAt(1));
   const intptr_t len = receiver.Length();
   const intptr_t split_code = smi_split_code.Value();
   const GrowableObjectArray& result = GrowableObjectArray::Handle(
       zone, GrowableObjectArray::New(16, Heap::kNew));
   String& str = String::Handle(zone);
   intptr_t start = 0;
   intptr_t i = 0;
   for (; i < len; i++) {
     if (split_code == OneByteString::CharAt(receiver, i)) {
       str = OneByteString::SubStringUnchecked(receiver, start, (i - start),
                                               Heap::kNew);
       result.Add(str);
       start = i + 1;
     }
   }
   str = OneByteString::SubStringUnchecked(receiver, start, (i - start),
                                           Heap::kNew);
   result.Add(str);
   return result.raw();
 }
 
-
 DEFINE_NATIVE_ENTRY(OneByteString_allocate, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, length_obj, arguments->NativeArgAt(0));
   return OneByteString::New(length_obj.Value(), Heap::kNew);
 }
 
-
 DEFINE_NATIVE_ENTRY(OneByteString_allocateFromOneByteList, 3) {
   Instance& list = Instance::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end_obj, arguments->NativeArgAt(2));
 
   intptr_t start = start_obj.Value();
   intptr_t end = end_obj.Value();
   if (start < 0) {
     const Array& args = Array::Handle(Array::New(1));
     args.SetAt(0, start_obj);
@@ skipping 66 matching lines @@
       intptr_t value =
           Smi::Value(reinterpret_cast<RawSmi*>(array.At(start + i)));
       OneByteString::SetCharAt(string, i, value);
     }
     return string.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
-
 DEFINE_NATIVE_ENTRY(OneByteString_setAt, 3) {
   GET_NON_NULL_NATIVE_ARGUMENT(String, receiver, arguments->NativeArgAt(0));
   ASSERT(receiver.IsOneByteString());
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, index_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, code_point_obj, arguments->NativeArgAt(2));
   ASSERT((0 <= code_point_obj.Value()) && (code_point_obj.Value() <= 0xFF));
   OneByteString::SetCharAt(receiver, index_obj.Value(), code_point_obj.Value());
   return Object::null();
 }
 
-
 DEFINE_NATIVE_ENTRY(ExternalOneByteString_getCid, 0) {
   return Smi::New(kExternalOneByteStringCid);
 }
 
-
 DEFINE_NATIVE_ENTRY(TwoByteString_allocateFromTwoByteList, 3) {
   Instance& list = Instance::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_obj, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end_obj, arguments->NativeArgAt(2));
 
   intptr_t start = start_obj.Value();
   intptr_t end = end_obj.Value();
   if (start < 0) {
     Exceptions::ThrowArgumentError(start_obj);
   }
@@ skipping 65 matching lines @@
       intptr_t value =
           Smi::Value(reinterpret_cast<RawSmi*>(array.At(start + i)));
       TwoByteString::SetCharAt(string, i, value);
     }
     return string.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
-
 DEFINE_NATIVE_ENTRY(String_getHashCode, 1) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   intptr_t hash_val = receiver.Hash();
   ASSERT(hash_val > 0);
   ASSERT(Smi::IsValid(hash_val));
   return Smi::New(hash_val);
 }
 
-
 DEFINE_NATIVE_ENTRY(String_getLength, 1) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   return Smi::New(receiver.Length());
 }
 
-
 static uint16_t StringValueAt(const String& str, const Integer& index) {
   if (index.IsSmi()) {
     const intptr_t index_value = Smi::Cast(index).Value();
     if ((0 <= index_value) && (index_value < str.Length())) {
       return str.CharAt(index_value);
     }
   }
 
   // An index larger than Smi is always illegal.
   Exceptions::ThrowRangeError("index", index, 0, str.Length() - 1);
   return 0;
 }
 
-
 DEFINE_NATIVE_ENTRY(String_charAt, 2) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Integer, index, arguments->NativeArgAt(1));
   uint16_t value = StringValueAt(receiver, index);
   return Symbols::FromCharCode(thread, static_cast<int32_t>(value));
 }
 
-
 // Returns the 16-bit UTF-16 code unit at the given index.
 DEFINE_NATIVE_ENTRY(String_codeUnitAt, 2) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Integer, index, arguments->NativeArgAt(1));
   uint16_t value = StringValueAt(receiver, index);
   return Smi::New(static_cast<intptr_t>(value));
 }
 
-
 DEFINE_NATIVE_ENTRY(String_concat, 2) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(String, b, arguments->NativeArgAt(1));
   return String::Concat(receiver, b);
 }
 
-
 DEFINE_NATIVE_ENTRY(String_toLowerCase, 1) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   ASSERT(!receiver.IsNull());
   return String::ToLowerCase(receiver);
 }
 
-
 DEFINE_NATIVE_ENTRY(String_toUpperCase, 1) {
   const String& receiver =
       String::CheckedHandle(zone, arguments->NativeArgAt(0));
   ASSERT(!receiver.IsNull());
   return String::ToUpperCase(receiver);
 }
 
-
 DEFINE_NATIVE_ENTRY(String_concatRange, 3) {
   GET_NON_NULL_NATIVE_ARGUMENT(Instance, argument, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, end, arguments->NativeArgAt(2));
   const intptr_t start_ix = start.Value();
   const intptr_t end_ix = end.Value();
   if (start_ix < 0) {
     Exceptions::ThrowArgumentError(start);
   }
   Array& strings = Array::Handle();
@@ skipping 15 matching lines @@
   // Check that the array contains strings.
   Instance& elem = Instance::Handle();
   for (intptr_t i = start_ix; i < end_ix; i++) {
     elem ^= strings.At(i);
     ASSERT(elem.IsString());
   }
 #endif
   return String::ConcatAllRange(strings, start_ix, end_ix, Heap::kNew);
 }
 
-
 DEFINE_NATIVE_ENTRY(StringBuffer_createStringFromUint16Array, 3) {
   GET_NON_NULL_NATIVE_ARGUMENT(TypedData, codeUnits, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, length, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Bool, isLatin1, arguments->NativeArgAt(2));
   intptr_t array_length = codeUnits.Length();
   intptr_t length_value = length.Value();
   if (length_value < 0 || length_value > array_length) {
     Exceptions::ThrowRangeError("length", length, 0, array_length);
   }
   const String& result =
       isLatin1.value()
           ? String::Handle(OneByteString::New(length_value, Heap::kNew))
           : String::Handle(TwoByteString::New(length_value, Heap::kNew));
   NoSafepointScope no_safepoint;
 
   uint16_t* data_position = reinterpret_cast<uint16_t*>(codeUnits.DataAddr(0));
   String::Copy(result, 0, data_position, length_value);
   return result.raw();
 }
 
 }  // namespace dart