44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* This file is part of the Project Athena Zephyr Notification System.
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* It is one of the source files comprising zwgc, the Zephyr WindowGram
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* client.
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*
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* Created by: Marc Horowitz <marc@athena.mit.edu>
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*
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* $Id$
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*
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* Copyright (c) 1989 by the Massachusetts Institute of Technology.
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* For copying and distribution information, see the file
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* "mit-copyright.h".
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*/
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#include <zephyr/mit-copyright.h>
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#ifndef eval_MODULE
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#define eval_MODULE
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#include "new_string.h"
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/*
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* string eval_expr(Node *expr)
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* Modifies: dict
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* Requires: expr is a proper expression (NOT NULL). (see node.c)
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* Effects: Evaluates expr to its string value which is returned.
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* The returned string is on the heap and must be freed
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* eventually.
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*/
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extern string eval_expr(Node *);
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/*
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* int eval_bool_expr(Node *expr)
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* Modifies: dict
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* Requires: expr is a proper expression or NULL. (see node.c)
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* Effects: Evaluates expr to its boolean value which is returned.
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* NULL is defined to have the boolean value true.
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*/
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extern int eval_bool_expr(Node *);
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#endif
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