thunk: initial commit

Something I slapped together in the interests of mechanizing the creation
of thunks in C.  In this context a thunk is simply a helper function that
serves to normalize the calling convention of functions having potentially
varying arity.

This code has not been used in anything yet, I just put it together because
I anticipate using it soon based on some projects I've been thinking about.

example.c contains a trivial usage example.

1 files changed, 39 insertions, 0 deletions

diff --git a/example.c b/example.c
new file mode 100644
index 0000000..5aa5e43
--- /dev/null
+++ b/example.c
@@ -0,0 +1,39 @@
+/* contrived usage example */
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "thunk.h"
+
+THUNK_DEFINE(sum, int, a, int, b, int *, res)
+{
+	*res = a + b;
+
+	return 0;
+}
+
+THUNK_DEFINE(mult, int, a, int, b, int, c, int *, res)
+{
+	*res = a * b * c;
+
+	return 0;
+}
+
+int normalized_helper(thunk_t *thunk)
+{
+	return thunk_dispatch(thunk);
+}
+
+
+int main(void)
+{
+	int out;
+
+	normalized_helper(THUNK(sum(1, 2, &out)));
+	printf("out: %i\n", out);
+
+	normalized_helper(THUNK(mult(9, 7, 100, &out)));
+	printf("out: %i\n", out);
+
+	return EXIT_SUCCESS;
+}
+