--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ploki/op.h	Fri Dec 20 22:18:50 2013 +0000
@@ -0,0 +1,67 @@
+#ifndef OP_H_
+#define OP_H_
+
+#include "IO.h"
+#include "Str.h"
+#include "expr.h"
+
+#include <stddef.h>
+
+enum t_op {
+	OP_NOP,
+	OP_ASSIGN,
+	OP_CALL,
+	OP_CALL_BACK,
+	OP_CALL_DYN,
+	OP_CLOSE,
+	OP_ELSE,
+	OP_EXIT,
+	OP_FI,
+	OP_FLUSH,
+	OP_GOBACK,
+	OP_GOTO,
+	OP_HANG,
+	OP_IF,
+	OP_MODIFY,
+	OP_PRINT,
+	OP_PUTC,
+	OP_RESET,
+	OP_RETURN,
+	OP_SET_VAL,
+	OP_SYSTEM,
+	OP_TEMP,
+	OP_THROW
+};
+
+struct op {
+	enum t_op type;
+	struct expr *arg;
+	union {
+		struct expr *expr;
+		struct op *op;
+	} arh;
+	struct op *next;
+	String txt;
+	size_t line;
+};
+
+void op_init(struct op *);
+void op_end(struct op *);
+void op_getop(struct op *);
+
+#define OP_1ARG_P(op)                                             \
+(                                                                 \
+ (op) == OP_CALL   || (op) == OP_CALL_DYN || (op) == OP_CLOSE  || \
+ (op) == OP_EXIT   || (op) == OP_FLUSH    || (op) == OP_GOTO   || \
+ (op) == OP_IF     || (op) == OP_RESET    || (op) == OP_RETURN || \
+ (op) == OP_SYSTEM || (op) == OP_THROW                            \
+)
+
+#define OP_2ARG_P(op)                                               \
+(                                                                   \
+ (op) == OP_ASSIGN || (op) == OP_CALL_BACK || (op) == OP_MODIFY  || \
+ (op) == OP_PRINT  || (op) == OP_PUTC      || (op) == OP_SET_VAL || \
+ (op) == OP_TEMP                                                    \
+)
+
+#endif /* OP_H_ */