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- #ifndef ALREADY_INCLUDED_EXPR
- #define ALREADY_INCLUDED_EXPR
-
- /*
- * Copyright (c) 2005 Magnus Lind.
- *
- * This software is provided 'as-is', without any express or implied warranty.
- * In no event will the authors be held liable for any damages arising from
- * the use of this software.
- *
- * Permission is granted to anyone to use this software, alter it and re-
- * distribute it freely for any non-commercial, non-profit purpose subject to
- * the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software in a
- * product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- *
- * 2. Altered source versions must be plainly marked as such, and must not
- * be misrepresented as being the original software.
- *
- * 3. This notice may not be removed or altered from any distribution.
- *
- * 4. The names of this software and/or it's copyright holders may not be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- */
-
- #include "int.h"
- #include "asmtab.h"
-
- union expr_type
- {
- i32 number;
- const char *symref;
- struct expr *arg1;
- };
-
- struct expr
- {
- union expr_type type;
- struct expr *expr_arg2;
- i16 expr_op;
- };
-
- void expr_init(void);
- void expr_free(void);
-
- struct expr *new_expr_op1(i16 op, struct expr *arg);
- struct expr *new_expr_op2(i16 op, struct expr *arg1, struct expr *arg2);
- struct expr *new_expr_symref(const char *symbol);
- struct expr *new_expr_number(i32 number);
- void expr_dump(int level, struct expr *e);
-
- #endif
-