new generated file + genscript + skeleton of interpreter

src/libcoreint/interpreter.c

@@ -0,0 +1,87 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "error.h"
+#include "lexer.h"
+#include "parser.h"
+#include "pretty-printer.h"
+#include "interpreter.h"
+#include "opcode.h"
+
+
+void
+safe_opcode (FILE *file, opcode_ptr ptr, int arg1, int arg2)
+{
+  curr_opcode.func = ptr;
+  curr_opcode.arg1 = arg1;
+  curr_opcode.arg2 = arg2;
+
+  if (file != NULL)
+  {
+    fwrite (&curr_opcode, sizeof (struct opcode_packed), 1, file);
+  }
+}
+
+void
+gen_bytecode (FILE *src_file)
+{
+  statement *st;
+  lexer_set_file (src_file);
+  parser_init ();
+  st = parser_parse_statement ();
+  assert (st);
+  while (st->type != STMT_EOF)
+  {
+    pp_statement (st);
+    st = parser_parse_statement ();
+    assert (st);
+  }
+  pp_finish ();
+
+  FILE *file = fopen (FILE_NAME, "w+b");
+  int i;
+
+  for (i = 0; i <= 10; i++)
+  {
+    safe_opcode (file, control_op, i, i);
+    safe_opcode (file, decl_op, i, i);
+    safe_opcode (file, call_op, i, i);
+  }
+
+  fclose (file);
+}
+
+void
+run_int ()
+{
+  FILE *file = fopen (FILE_NAME, "rb");
+
+  if (file == NULL)
+  {
+    fputs ("File error", stderr);
+    exit (1);
+  }
+
+  while (!feof (file))
+  {
+    fread (&curr_opcode, sizeof (struct opcode_packed), 1, file);
+
+    //printf ("read %d, %d, %p\n", curr_opcode.arg1, curr_opcode.arg2, curr_opcode.func);
+    curr_opcode.func (curr_opcode.arg1, curr_opcode.arg2);
+  }
+
+  fclose (file);
+}
+