Add parser-shell.

tools/lexer-shell.cc

Index: tools/lexer-shell.cc
diff --git a/tools/lexer-shell.cc b/tools/lexer-shell.cc
index 0610e7f70d22887114047fe32514c6038a22672e..8c7debcab8b1554fa6026cd8d7d283b213e87016 100644
--- a/tools/lexer-shell.cc
+++ b/tools/lexer-shell.cc
@@ -26,7 +26,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <assert.h>
-#include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -35,53 +34,18 @@
 #include "v8.h"
 
 #include "api.h"
-#include "ast.h"
-#include "char-predicates-inl.h"
 #include "messages.h"
 #include "platform.h"
 #include "runtime.h"
 #include "scanner-character-streams.h"
 #include "scopeinfo.h"
+#include "shell-utils.h"
 #include "string-stream.h"
 #include "scanner.h"
 
 
 using namespace v8::internal;
 
-enum Encoding {
-  LATIN1,
-  UTF8,
-  UTF16
-};
-
-
-const byte* ReadFile(const char* name, Isolate* isolate,
-                     int* size, int repeat) {
-  FILE* file = fopen(name, "rb");
-  *size = 0;
-  if (file == NULL) return NULL;
-
-  fseek(file, 0, SEEK_END);
-  int file_size = ftell(file);
-  rewind(file);
-
-  *size = file_size * repeat;
-
-  byte* chars = new byte[*size + 1];
-  for (int i = 0; i < file_size;) {
-    int read = static_cast<int>(fread(&chars[i], 1, file_size - i, file));
-    i += read;
-  }
-  fclose(file);
-
-  for (int i = file_size; i < *size; i++) {
-    chars[i] = chars[i - file_size];
-  }
-  chars[*size] = 0;
-
-  return chars;
-}
-
 
 class BaselineScanner {
  public:
@@ -92,7 +56,7 @@ class BaselineScanner {
                   int repeat)
       : stream_(NULL) {
     int length = 0;
-    source_ = ReadFile(fname, isolate, &length, repeat);
+    source_ = ReadFileAndRepeat(fname, &length, repeat);
     unicode_cache_ = new UnicodeCache();
     scanner_ = new Scanner(unicode_cache_);
     switch (encoding) {