55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* type.h: Miscellaneous macros for type-checking Scheme objects.
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*
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* $Id$
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*
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* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
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* Copyright 2002, 2003 Sam Hocevar <sam@zoy.org>, Paris
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*
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* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
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* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
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* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
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* between TELES and Nixdorf Microprocessor Engineering, Berlin).
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*
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* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
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* owners or individual owners of copyright in this software, grant to any
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* person or company a worldwide, royalty free, license to
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*
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* i) copy this software,
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* ii) prepare derivative works based on this software,
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* iii) distribute copies of this software or derivative works,
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* iv) perform this software, or
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* v) display this software,
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*
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* provided that this notice is not removed and that neither Oliver Laumann
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* nor Teles nor Nixdorf are deemed to have made any representations as to
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* the suitability of this software for any purpose nor are held responsible
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* for any defects of this software.
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*
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* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
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*/
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#define Check_Type(x,t) {\
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if (TYPE(x) != t) Wrong_Type (x, t);\
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}
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#define Check_List(x) {\
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if (TYPE(x) != T_Pair && !Nullp (x)) Wrong_Type_Combination (x, "list");\
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}
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#define Check_Number(x) {\
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register int t = TYPE(x);\
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if (!Numeric (t)) Wrong_Type_Combination (x, "number");\
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}
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/* This should be renamed; it checks whether x is an *exact* integer.
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*/
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#define Check_Integer(x) {\
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register int t = TYPE(x);\
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if (t != T_Fixnum && t != T_Bignum) Wrong_Type (x, T_Fixnum);\
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}
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#define Check_Mutable(x) {\
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if (ISCONST(x))\
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Primitive_Error ("attempt to modify constant");\
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}
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