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Code Issues 1 Releases Wiki Activity

Add bitwise operators

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This commit is contained in:
Calvin Rose 2017-06-11 09:38:37 -04:00
parent a382c62db8
commit 6c597f6b5b
1 changed files with 50 additions and 0 deletions
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50
core/stl.c
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@ -94,6 +94,46 @@ int gst_stl_div(Gst *vm) {
#undef SIMPLE_ACCUM_FUNCTION
#define BITWISE_FUNCTION(name, op) \
int gst_stl_##name(Gst *vm) {\
GstValue ret;\
uint32_t i, count;\
count = gst_count_args(vm);\
ret = gst_arg(vm, 0);\
if (ret.type != GST_INTEGER) {\
gst_c_throwc(vm, "expected integer");\
}\
if (count < 2) {\
gst_c_return(vm, ret);\
}\
for (i = 1; i < count; ++i) {\
GstValue next = gst_arg(vm, i);\
if (next.type != GST_INTEGER) {\
gst_c_throwc(vm, "expected integer");\
}\
ret.data.integer = ret.data.integer op next.data.integer;\
}\
gst_c_return(vm, ret);\
}
BITWISE_FUNCTION(band, &)
BITWISE_FUNCTION(bor, |)
BITWISE_FUNCTION(bxor, ^)
BITWISE_FUNCTION(blshift, <<)
BITWISE_FUNCTION(brshift, >>)
#undef BITWISE_FUNCTION
int gst_stl_bnot(Gst *vm) {
GstValue in = gst_arg(vm, 0);
uint32_t count = gst_count_args(vm);
if (count != 1 || in.type != GST_INTEGER) {
gst_c_throwc(vm, "expected 1 integer argument");
}
in.data.integer = ~in.data.integer;
gst_c_return(vm, in);
}
#define COMPARE_FUNCTION(name, check)\
int gst_stl_##name(Gst *vm) {\
GstValue ret;\
@ -875,15 +915,25 @@ int gst_stl_debugp(Gst *vm) {
/****/
static const GstModuleItem const std_module[] = {
/* Arithmetic */
{"+", gst_stl_add},
{"*", gst_stl_mul},
{"-", gst_stl_sub},
{"/", gst_stl_div},
/* Comparisons */
{"<", gst_stl_lessthan},
{">", gst_stl_greaterthan},
{"=", gst_stl_equal},
{"<=", gst_stl_lessthaneq},
{">=", gst_stl_greaterthaneq},
/* Bitwise arithmetic */
{"band", gst_stl_band},
{"bor", gst_stl_bor},
{"bxor", gst_stl_bxor},
{"blshift", gst_stl_blshift},
{"brshift", gst_stl_brshift},
{"bnot", gst_stl_bnot},
/* Other */
{"not", gst_stl_not},
{"length", gst_stl_length},
{"hash", gst_stl_hash},