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+/*****
+ * coenv.h
+ * Andy Hammerlindl 2004/11/18
+ *
+ * Bundles the env and coder classes needed in translating the abstract syntax
+ * tree. It also also implements some functions that involve both the env and
+ * coder, such as implicitCast().
+ *****/
+
+#ifndef COENV_H
+#define COENV_H
+
+#include "env.h"
+#include "coder.h"
+
+namespace trans {
+
+class coenv {
+public:
+ coder &c;
+ env &e;
+
+ coenv(coder &c, env &e)
+ : c(c), e(e) {}
+
+ // This is used when an expression of type source needs to be an
+ // expression of type target.
+ // If it is allowed, the casting instructions (if any) will be added.
+ // Otherwise, an appropriate error message will be printed.
+ bool implicitCast(position pos, ty *target, ty *source);
+ bool explicitCast(position pos, ty *target, ty *source);
+
+ void add(protoenv &source, varEntry *qualifier) {
+ e.add(source, qualifier, c);
+ }
+};
+
+} // namespace trans
+
+#endif