Author: Armin Rigo <[email protected]>
Branch:
Changeset: r907:8dadf841d6f3
Date: 2012-08-31 15:24 +0200
http://bitbucket.org/cffi/cffi/changeset/8dadf841d6f3/
Log: Ask for the length of the list from C code, too.
diff --git a/demo/pyobj.py b/demo/pyobj.py
--- a/demo/pyobj.py
+++ b/demo/pyobj.py
@@ -33,9 +33,14 @@
ffi.cdef("""
typedef int pyobj_t;
- int sum(pyobj_t oblist, int count);
+ int sum(pyobj_t oblist);
""")
[email protected]("int(pyobj_t)")
+def length(oblist):
+ list = referents[oblist]
+ return len(list)
+
@ffi.pyexport("int(pyobj_t, int)")
def getitem(oblist, index):
list = referents[oblist]
@@ -44,8 +49,9 @@
lib = ffi.verify("""
typedef int pyobj_t;
- int sum(pyobj_t oblist, int count) {
+ int sum(pyobj_t oblist) {
int i, result = 0;
+ int count = length(oblist);
for (i=0; i<count; i++) {
int n = getitem(oblist, i);
result += n;
@@ -55,4 +61,4 @@
""")
with Ref([10, 20, 30, 40]) as oblist:
- print lib.sum(oblist, 4)
+ print lib.sum(oblist)
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