move CallEvent out of compiler.cpp

src/codegen/compiler/promise.h

@@ -0,0 +1,52 @@
+/* Copyright (c) 2008-2012, Avian Contributors
+
+   Permission to use, copy, modify, and/or distribute this software
+   for any purpose with or without fee is hereby granted, provided
+   that the above copyright notice and this permission notice appear
+   in all copies.
+
+   There is NO WARRANTY for this software.  See license.txt for
+   details. */
+
+#ifndef AVIAN_CODEGEN_COMPILER_PROMISE_H
+#define AVIAN_CODEGEN_COMPILER_PROMISE_H
+
+namespace avian {
+namespace codegen {
+namespace compiler {
+
+
+class CodePromise: public Promise {
+ public:
+  CodePromise(Context* c, CodePromise* next):
+    c(c), offset(0), next(next)
+  { }
+
+  CodePromise(Context* c, Promise* offset):
+    c(c), offset(offset), next(0)
+  { }
+
+  virtual int64_t value() {
+    if (resolved()) {
+      return reinterpret_cast<intptr_t>(c->machineCode + offset->value());
+    }
+    
+    abort(c);
+  }
+
+  virtual bool resolved() {
+    return c->machineCode != 0 and offset and offset->resolved();
+  }
+
+  Context* c;
+  Promise* offset;
+  CodePromise* next;
+};
+
+CodePromise* codePromise(Context* c, Promise* offset);
+
+} // namespace compiler
+} // namespace codegen
+} // namespace avian
+
+#endif // AVIAN_CODEGEN_COMPILER_PROMISE_H