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Chicken: Add the %feature("constasvar"), which exports constants as variables instead of functions

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@9197 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
John Lenz 2006-07-05 01:54:32 +00:00
commit b001bf16a5
3 changed files with 34 additions and 4 deletions
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5
CHANGES.current
View file

@ -1,5 +1,10 @@
Version 1.3.30 (in progress)
============================
07/04/2006: wuzzeb (John Lenz)
[Chicken]
Add %feature("constasvar"), which instead of exporting a constant as a
scheme function, exports the constant as a scheme variable. Update the
documentation as well.
07/04/2006: wsfulton
New explicitcall feature which generates additional wrappers for virtual methods

10
Doc/Manual/Chicken.html
View file

@ -217,6 +217,16 @@
use <tt>(my-variable)</tt>.
</p>
<p>
The <tt>%feature("constasvar")</tt> can be applied to any constant
or immutable variable. Instead of exporting the constant as
as function that must be called, the constant will appear as a
scheme variable. This causes the generated .scm file just contain the code
<tt>(set! MYCONSTANT1 (MYCONSTANT1))</tt>. See
<a href="Customization.html#features">Features and the %feature directive</a>
for info on how to apply the %feature.
</p>
<H3><a name="Chicken_nn9"></a>18.2.4 Functions</H3>

23
Source/Modules/chicken.cxx
View file

@ -60,7 +60,8 @@ static bool exporting_constructor = false;
static String *constructor_name = 0;
static String *member_name = 0;
/* sections of the clos code */
/* sections of the .scm code */
static String *scm_const_defs = 0;
static String *clos_class_defines = 0;
static String *clos_methods = 0;
@ -217,6 +218,7 @@ CHICKEN::top(Node *n)
clos_class_defines = NewString("");
clos_methods = NewString("");
scm_const_defs = NewString("");
Printf(f_runtime, "/* -*- buffer-read-only: t -*- vi: set ro: */\n");
Swig_banner(f_runtime);
@ -279,6 +281,8 @@ CHICKEN::top(Node *n)
Printf (f_scm, "%s\n", closprefix);
Printf (f_scm, "%s\n", clos_class_defines);
Printf (f_scm, "%s\n", clos_methods);
} else {
Printf (f_scm, "%s\n", scm_const_defs);
}
Printf(f_scm, "%s\n", chickentext);
@ -304,6 +308,7 @@ CHICKEN::top(Node *n)
Delete(clos_class_defines);
Delete(clos_methods);
Delete(scm_const_defs);
/* Close all of the files */
Delete(primitive_names);
@ -824,13 +829,18 @@ CHICKEN::variableWrapper(Node *n) {
Node *class_node = classLookup(t);
String *clos_code = Getattr(n, "tmap:varin:closcode");
if (class_node && clos_code) {
if (class_node && clos_code && !GetFlag(n, "feature:immutable")) {
Replaceall(clos_code,"$input", "(car lst)");
Printv(clos_methods, "(define (", clos_name, " . lst) (if (null? lst) (", chickenPrimitiveName(scmname), ") (",
chickenPrimitiveName(scmname), " ", clos_code, ")))\n", NIL);
} else {
/* Simply re-export the procedure */
Printv(clos_methods, "(define ", clos_name, " ", chickenPrimitiveName(scmname), ")\n", NIL);
if (GetFlag(n, "feature:immutable") && GetFlag(n, "feature:constasvar")) {
Printv(clos_methods, "(define ", clos_name, " (", chickenPrimitiveName(scmname), "))\n", NIL);
Printv(scm_const_defs, "(set! ", scmname, " (", scmname, "))\n", NIL);
} else {
Printv(clos_methods, "(define ", clos_name, " ", chickenPrimitiveName(scmname), ")\n", NIL);
}
}
Delete(clos_name);
}
@ -1008,7 +1018,12 @@ CHICKEN::constantWrapper(Node *n)
clos_name = NewString(member_name);
else
clos_name = chickenNameMapping(scmname, (char *)"");
Printv(clos_methods, "(define ", clos_name, " ", chickenPrimitiveName(scmname), ")\n", NIL);
if (GetFlag(n,"feature:constasvar")) {
Printv(clos_methods, "(define ", clos_name, " (", chickenPrimitiveName(scmname), "))\n", NIL);
Printv(scm_const_defs, "(set! ", scmname, " (", scmname, "))\n", NIL);
} else {
Printv(clos_methods, "(define ", clos_name, " ", chickenPrimitiveName(scmname), ")\n", NIL);
}
Delete(clos_name);
}