Heap::AllocateStringFromOneByte() and major part of its callers handlified.

src/factory.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "isolate.h"
 
 namespace v8 {
@@ skipping 100 matching lines @@
   //   - ...FromUtf8 initializes the string from a buffer that is UTF-8
   //     encoded.  If the characters are all single-byte characters, the
   //     result will be ASCII encoded, otherwise it will converted to two
   //     byte.
   //   - ...FromTwoByte initializes the string from a buffer that is two
   //     byte encoded.  If the characters are all single-byte characters,
   //     the result will be converted to ASCII, otherwise it will be left as
   //     two byte.
   //
   // ASCII strings are pretenured when used as keys in the SourceCodeCache.
-  Handle<String> NewStringFromOneByte(
+  MUST_USE_RESULT MaybeHandle<String> NewStringFromOneByte(
       Vector<const uint8_t> str,
       PretenureFlag pretenure = NOT_TENURED);
+
+  template<size_t N>
+  inline Handle<String> NewStringFromStaticAscii(
+      const char (&str)[N],

[Yang, 2014/04/17 12:28:46]

Wow. I did not know you could use array size as implicit template argument.
Nice.

+      PretenureFlag pretenure = NOT_TENURED) {
+    ASSERT(N == StrLength(str) + 1);
+    return NewStringFromOneByte(
+        STATIC_ASCII_VECTOR(str), pretenure).ToHandleChecked();
+  }
+
+  inline Handle<String> NewStringFromAsciiChecked(
+      const char* str,
+      PretenureFlag pretenure = NOT_TENURED) {
+    return NewStringFromOneByte(
+        OneByteVector(str), pretenure).ToHandleChecked();
+  }
+
   // TODO(dcarney): remove this function.
-  inline Handle<String> NewStringFromAscii(
+  MUST_USE_RESULT inline MaybeHandle<String> NewStringFromAscii(
       Vector<const char> str,
       PretenureFlag pretenure = NOT_TENURED) {
     return NewStringFromOneByte(Vector<const uint8_t>::cast(str), pretenure);
   }
 
   // UTF8 strings are pretenured when used for regexp literal patterns and
   // flags in the parser.
-  Handle<String> NewStringFromUtf8(
+  MUST_USE_RESULT MaybeHandle<String> NewStringFromUtf8(
       Vector<const char> str,
       PretenureFlag pretenure = NOT_TENURED);
 
-  Handle<String> NewStringFromTwoByte(
+  MUST_USE_RESULT MaybeHandle<String> NewStringFromTwoByte(
       Vector<const uc16> str,
       PretenureFlag pretenure = NOT_TENURED);
 
   // Allocates and partially initializes an ASCII or TwoByte String. The
   // characters of the string are uninitialized. Currently used in regexp code
   // only, where they are pretenured.
   MUST_USE_RESULT MaybeHandle<SeqOneByteString> NewRawOneByteString(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
   MUST_USE_RESULT MaybeHandle<SeqTwoByteString> NewRawTwoByteString(
@@ skipping 511 matching lines @@
   // the string representation of the number.  Otherwise return undefined.
   Handle<Object> GetNumberStringCache(Handle<Object> number);
 
   // Update the cache with a new number-string pair.
   void SetNumberStringCache(Handle<Object> number, Handle<String> string);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_