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cosmetics

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@8407 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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Marcelo Matus 2006-01-13 01:08:10 +00:00
commit 02faa27d3f
1 changed files with 21 additions and 19 deletions
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40
SWIG/Lib/swig.swg
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@ -154,38 +154,40 @@
/* aggregation support */
/*
This macro performs constant aggregation. Basically the idea of
constant aggregation is that you can group a collection of constants
together. For example, suppose you have some code like this:
This macro performs constant aggregation. Basically the idea of
constant aggregation is that you can group a collection of constants
together. For example, suppose you have some code like this:
#define UP 1
#define DOWN 2
#define LEFT 3
#define RIGHT 4
Now, suppose you had a function like this:
Now, suppose you had a function like this:
int move(int direction)
In this case, you might want to restrict the direction argument to one of the supplied
constant names. To do this, you could write some typemap code by hand. Alternatively,
you can use the %aggregate_check macro defined here to create a simple check function
for you. Here is an example:
In this case, you might want to restrict the direction argument to
one of the supplied constant names. To do this, you could write some
typemap code by hand. Alternatively, you can use the
%aggregate_check macro defined here to create a simple check
function for you. Here is an example:
%aggregate_check(int, check_direction, UP, DOWN, LEFT, RIGHT);
%aggregate_check(int, check_direction, UP, DOWN, LEFT, RIGHT);
Now, using a typemap
Now, using a typemap
%typemap(check) int direction {
if (!check_direction($1)) SWIG_exception(SWIG_ValueError,"Bad direction.");
}
%typemap(check) int direction {
if (!check_direction($1)) SWIG_exception(SWIG_ValueError,"Bad direction.");
}
or a contract (better)
or a contract (better)
%contract move(int x) {
require:
check_direction(x);
}
%contract move(int x) {
require:
check_direction(x);
}
*/
%define %aggregate_check(TYPE, NAME, FIRST, ...)
@ -238,7 +240,7 @@ static int NAME(TYPE x) {
%define %isdestructor match="destructor" %enddef
%define %isnamespace match="namespace" %enddef
%define %istemplate match="template" %enddef
%define %isconstant match="constant" %enddef
%define %isconstant match="constant" %enddef /* %constant definition */
%define %isunion match$kind="union" %enddef
%define %isfunction match$kind="function" %enddef