builtin: add voidptr.vbytes(len) and byteptr.vbytes(len)
parent
2473f65278
commit
1891f55c72
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@ -720,3 +720,21 @@ pub fn (a array) pointers() []voidptr {
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}
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return res
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}
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// voidptr.vbytes() - makes a V []byte structure from a C style memory buffer. NB: the data is reused, NOT copied!
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[unsafe]
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pub fn (data voidptr) vbytes(len int) []byte {
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res := array{
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element_size: 1
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data: data
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len: len
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cap: len
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}
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return res
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}
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// byteptr.vbytes() - makes a V []byte structure from a C style memory buffer. NB: the data is reused, NOT copied!
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[unsafe]
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pub fn (data byteptr) vbytes(len int) []byte {
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return unsafe {voidptr(data).vbytes(len)}
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}
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@ -1051,10 +1051,44 @@ const (
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)
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fn test_multidimensional_array_initialization_with_consts() {
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mut data := [][][]int{ len: grid_size_1, init: [][]int{ len: grid_size_2, init: []int{ len: grid_size_3, init: cell_value } } }
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mut data := [][][]int{len: grid_size_1, init: [][]int{len: grid_size_2, init: []int{len: grid_size_3, init: cell_value}}}
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assert data.len == grid_size_1
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assert data[0].len == grid_size_2
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assert data[0][0].len == grid_size_3
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assert data[0][0][0] == cell_value
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assert data[1][1][1] == cell_value
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}
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fn test_byteptr_vbytes() {
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unsafe {
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bp := malloc(5)
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bp[0] = 1
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bp[1] = 2
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bp[2] = 3
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bp[3] = 4
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bp[4] = 255
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bytes := bp.vbytes(5)
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println(bytes)
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assert bytes.len == 5
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assert bytes[0] == 1
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assert bytes[1] == 2
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assert bytes[2] == 3
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assert bytes[3] == 4
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assert bytes[4] == 255
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}
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}
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fn test_voidptr_vbytes() {
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unsafe {
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bp := malloc(3)
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bp[0] = 4
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bp[1] = 5
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bp[2] = 6
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bytes := voidptr(bp).vbytes(3)
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assert bytes.len == 3
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assert bytes[0] == 4
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assert bytes[1] == 5
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assert bytes[2] == 6
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println(bytes)
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}
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}
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