516036631c
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@4141 626c5289-ae23-0410-ae9c-e8d60b6d4f22
68 lines
2 KiB
C
68 lines
2 KiB
C
/* pointer-in-out.i --- Guile typemaps for passing -*- c -*- pointers indirectly
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Copyright (C) 2001 Matthias Koeppe <mkoeppe@mail.math.uni-magdeburg.de>
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$Header$
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*/
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/* Here is a macro that will define typemaps for passing C pointers indirectly.
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TYPEMAP_POINTER_INPUT_OUTPUT(PTRTYPE, SCM_TYPE)
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Supported calling conventions (in this example, PTRTYPE is int *):
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func(int **INPUT)
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Scheme wrapper will take one argument, a wrapped C pointer.
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The address of a variable containing this pointer will be
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passed to the function.
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func(int **OUTPUT)
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Scheme wrapper will take no arguments. The address of an int *
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variable will be passed to the function. The function is
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expected to modify the variable; its value is wrapped and
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becomes an extra return value. (See the documentation on how
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to deal with multiple values.)
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func(int **BOTH)
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func(int **INOUT)
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This annotation combines INPUT and OUTPUT.
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*/
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%define TYPEMAP_POINTER_INPUT_OUTPUT(PTRTYPE, SCM_TYPE)
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%typemap(in, doc="$NAME is of type <" #SCM_TYPE ">") PTRTYPE *INPUT(PTRTYPE temp)
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{
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if (SWIG_Guile_GetPtr($input, (void **) &temp, $*descriptor)) {
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scm_wrong_type_arg(FUNC_NAME, $argnum, $input);
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}
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$1 = &temp;
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}
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%typemap(in, numinputs=0) PTRTYPE *OUTPUT(PTRTYPE temp)
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"$1 = &temp;";
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%typemap(argout, doc="<" #SCM_TYPE ">") PTRTYPE *OUTPUT
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"SWIG_APPEND_VALUE(SWIG_Guile_MakePtr(*$1, $*descriptor));";
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%typemap(in) PTRTYPE *BOTH = PTRTYPE *INPUT;
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%typemap(argout) PTRTYPE *BOTH = PTRTYPE *OUTPUT;
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%typemap(in) PTRTYPE *INOUT = PTRTYPE *INPUT;
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%typemap(argout) PTRTYPE *INOUT = PTRTYPE *OUTPUT;
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/* As a special convenience measure, also attach docs involving
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SCM_TYPE to the standard pointer typemaps */
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%typemap(in, doc="$NAME is of type <" #SCM_TYPE ">") PTRTYPE {
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if (SWIG_Guile_GetPtr($input, (void **) &$1, $descriptor))
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scm_wrong_type_arg(FUNC_NAME, $argnum, $input);
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}
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%typemap(out, doc="<" #SCM_TYPE ">") PTRTYPE {
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$result = SWIG_Guile_MakePtr ($1, $descriptor);
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}
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%enddef
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