77 lines
1.4 KiB
V
77 lines
1.4 KiB
V
struct Struct {
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name string
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x int
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}
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fn test_byte_pointer_casts() {
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unsafe {
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pb := &u8(1)
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ppb := &&u8(2)
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pppb := &&&u8(3)
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ppppb := &&&&u8(4)
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assert voidptr(pb).str() == '0x1'
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assert voidptr(ppb).str() == '0x2'
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assert voidptr(pppb).str() == '0x3'
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assert voidptr(ppppb).str() == '0x4'
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}
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}
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fn test_char_pointer_casts() {
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unsafe {
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pc := &char(5)
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ppc := &&char(6)
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pppc := &&&char(7)
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ppppc := &&&&char(8)
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assert voidptr(pc).str() == '0x5'
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assert voidptr(ppc).str() == '0x6'
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assert voidptr(pppc).str() == '0x7'
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assert voidptr(ppppc).str() == '0x8'
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}
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}
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fn test_struct_pointer_casts() {
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unsafe {
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ps := &Struct(9)
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pps := &&Struct(10)
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ppps := &&&Struct(11)
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pppps := &&&&Struct(12)
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assert voidptr(ps).str() == '0x9'
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assert voidptr(pps).str() == '0xa'
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assert voidptr(ppps).str() == '0xb'
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assert voidptr(pppps).str() == '0xc'
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}
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}
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fn test_struct_pointer_casts_with_field_selectors() {
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ss := &Struct{
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name: 'abc'
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x: 123
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}
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dump(ss)
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pss := voidptr(ss)
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if &Struct(pss).name == 'abc' {
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assert true
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}
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if &Struct(pss).x == 123 {
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// &Struct cast and selecting .x
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assert true
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}
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if unsafe { &&Struct(pss) != 0 } {
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// &&Struct
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assert true
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}
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}
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fn test_pointer_casts_with_indexing() {
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mut numbers := [5]u64{}
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numbers[0] = 123
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numbers[1] = 456
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unsafe {
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pnumbers := voidptr(&numbers[0])
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assert &u64(pnumbers)[0] == 123
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assert &u64(pnumbers)[1] == 456
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idx := 1
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assert &u64(pnumbers)[idx] == 456
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}
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}
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