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author_Tradam <[email protected]>2023-09-08 01:29:47 +0000
committerGitHub <[email protected]>2023-09-08 01:29:47 +0000
commit3c76c7f3d5db3f9586a90d03f8fbb02d79de9acd (patch)
treeafbe4b540967223911f7c5de36559b82154f02f3 /misc/examples/box2.c
parent0841165881871ee01b782129be681209aeed2423 (diff)
parent1a72205fe05c2375cfd380dd8381a8460d9ed8d1 (diff)
downloadSTC-modified-modified.tar.gz
STC-modified-modified.zip
Merge branch 'stclib:master' into modifiedHEADmodified
Diffstat (limited to 'misc/examples/box2.c')
-rw-r--r--misc/examples/box2.c84
1 files changed, 0 insertions, 84 deletions
diff --git a/misc/examples/box2.c b/misc/examples/box2.c
deleted file mode 100644
index cba255d2..00000000
--- a/misc/examples/box2.c
+++ /dev/null
@@ -1,84 +0,0 @@
-// example: https://doc.rust-lang.org/rust-by-example/std/box.html
-#include <stdio.h>
-
-typedef struct {
- double x;
- double y;
-} Point;
-
-// A Rectangle can be specified by where its top left and bottom right
-// corners are in space
-typedef struct {
- Point top_left;
- Point bottom_right;
-} Rectangle;
-
-#define i_val Point
-#define i_no_cmp
-#include <stc/cbox.h> // cbox_Point
-
-#define i_val Rectangle
-#define i_no_cmp
-#include <stc/cbox.h> // cbox_Rectangle
-
-// Box in box:
-#define i_valboxed cbox_Point // NB: use i_valboxed when value is a cbox or carc!
-#define i_type BoxBoxPoint
-#define i_no_cmp
-#include <stc/cbox.h> // BoxBoxPoint
-
-Point origin(void) {
- return (Point){ .x=1.0, .y=2.0 };
-}
-
-cbox_Point boxed_origin(void) {
- // Allocate this point on the heap, and return a pointer to it
- return cbox_Point_make((Point){ .x=1.0, .y=2.0 });
-}
-
-
-int main(void) {
- // Stack allocated variables
- Point point = origin();
- Rectangle rectangle = {
- .top_left = origin(),
- .bottom_right = { .x=3.0, .y=-4.0 }
- };
-
- // Heap allocated rectangle
- cbox_Rectangle boxed_rectangle = cbox_Rectangle_make((Rectangle){
- .top_left = origin(),
- .bottom_right = { .x=3.0, .y=-4.0 }
- });
- // The output of functions can be boxed
- cbox_Point boxed_point = cbox_Point_make(origin());
-
- // Can use from(raw) and toraw instead:
- BoxBoxPoint box_in_a_box = BoxBoxPoint_from(origin());
-
- c_defer(
- BoxBoxPoint_drop(&box_in_a_box),
- cbox_Point_drop(&boxed_point),
- cbox_Rectangle_drop(&boxed_rectangle)
- ){
- printf("box_in_a_box: x = %g\n", BoxBoxPoint_toraw(&box_in_a_box).x);
-
- printf("Point occupies %d bytes on the stack\n",
- (int)sizeof(point));
- printf("Rectangle occupies %d bytes on the stack\n",
- (int)sizeof(rectangle));
-
- // box size == pointer size
- printf("Boxed point occupies %d bytes on the stack\n",
- (int)sizeof(boxed_point));
- printf("Boxed rectangle occupies %d bytes on the stack\n",
- (int)sizeof(boxed_rectangle));
- printf("Boxed box occupies %d bytes on the stack\n",
- (int)sizeof(box_in_a_box));
-
- // Copy the data contained in `boxed_point` into `unboxed_point`
- Point unboxed_point = *boxed_point.get;
- printf("Unboxed point occupies %d bytes on the stack\n",
- (int)sizeof(unboxed_point));
- }
-}