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option to disable bounds checking; examples/path_tracing.v: optimizations

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This commit is contained in:
Delyan Angelov
2020-02-16 17:13:45 +02:00
committed by GitHub
parent 277c55fe5b
commit 195f3f465b
9 changed files with 370 additions and 315 deletions
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88
vlib/builtin/array.v
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@@ -116,8 +116,10 @@ pub fn (a mut array) sort_with_compare(compare voidptr) {
// a.insert(0, &i)
// ----------------------------
pub fn (a mut array) insert(i int, val voidptr) {
if i < 0 || i > a.len {
panic('array.insert: index out of range (i == $i, a.len == $a.len)')
$if !no_bounds_checking? {
if i < 0 || i > a.len {
panic('array.insert: index out of range (i == $i, a.len == $a.len)')
}
}
a.ensure_cap(a.len + 1)
size := a.element_size
@@ -135,8 +137,10 @@ pub fn (a mut array) prepend(val voidptr) {
// array.delete deletes array element at the given index
pub fn (a mut array) delete(i int) {
if i < 0 || i >= a.len {
panic('array.delete: index out of range (i == $i, a.len == $a.len)')
$if !no_bounds_checking? {
if i < 0 || i >= a.len {
panic('array.delete: index out of range (i == $i, a.len == $a.len)')
}
}
size := a.element_size
C.memmove(a.data + i * size, a.data + (i + 1) * size, (a.len - i) * size)
@@ -150,24 +154,30 @@ pub fn (a mut array) clear() {
// Private function. Used to implement array[] operator
fn (a array) get(i int) voidptr {
if i < 0 || i >= a.len {
panic('array.get: index out of range (i == $i, a.len == $a.len)')
$if !no_bounds_checking? {
if i < 0 || i >= a.len {
panic('array.get: index out of range (i == $i, a.len == $a.len)')
}
}
return a.data + i * a.element_size
}
// array.first returns the first element of the array
pub fn (a array) first() voidptr {
if a.len == 0 {
panic('array.first: array is empty')
$if !no_bounds_checking? {
if a.len == 0 {
panic('array.first: array is empty')
}
}
return a.data + 0
}
// array.last returns the last element of the array
pub fn (a array) last() voidptr {
if a.len == 0 {
panic('array.last: array is empty')
$if !no_bounds_checking? {
if a.len == 0 {
panic('array.last: array is empty')
}
}
return a.data + (a.len - 1) * a.element_size
}
@@ -176,9 +186,11 @@ pub fn (a array) last() voidptr {
// array.left returns a new array using the same buffer as the given array
// with the first `n` elements of the given array.
fn (a array) left(n int) array {
if n < 0 {
panic('array.left: index is negative (n == $n)')
}
// $if !no_bounds_checking? {
// if n < 0 {
// panic('array.left: index is negative (n == $n)')
// }
// }
if n >= a.len {
return a.slice(0, a.len)
}
@@ -190,9 +202,11 @@ fn (a array) left(n int) array {
// If `n` is bigger or equal to the length of the given array,
// returns an empty array of the same type as the given array.
fn (a array) right(n int) array {
if n < 0 {
panic('array.right: index is negative (n == $n)')
}
// $if !no_bounds_checking? {
// if n < 0 {
// panic('array.right: index is negative (n == $n)')
// }
// }
if n >= a.len {
return new_array(0, 0, a.element_size)
}
@@ -206,14 +220,16 @@ fn (a array) right(n int) array {
// set to the number of the elements in the slice.
fn (a array) slice(start, _end int) array {
mut end := _end
if start > end {
panic('array.slice: invalid slice index ($start > $end)')
}
if end > a.len {
panic('array.slice: slice bounds out of range ($end >= $a.len)')
}
if start < 0 {
panic('array.slice: slice bounds out of range ($start < 0)')
$if !no_bounds_checking? {
if start > end {
panic('array.slice: invalid slice index ($start > $end)')
}
if end > a.len {
panic('array.slice: slice bounds out of range ($end >= $a.len)')
}
if start < 0 {
panic('array.slice: slice bounds out of range ($start < 0)')
}
}
l := end - start
res := array{
@@ -249,14 +265,16 @@ pub fn (a array) clone() array {
fn (a array) slice_clone(start, _end int) array {
mut end := _end
if start > end {
panic('array.slice: invalid slice index ($start > $end)')
}
if end > a.len {
panic('array.slice: slice bounds out of range ($end >= $a.len)')
}
if start < 0 {
panic('array.slice: slice bounds out of range ($start < 0)')
$if !no_bounds_checking? {
if start > end {
panic('array.slice: invalid slice index ($start > $end)')
}
if end > a.len {
panic('array.slice: slice bounds out of range ($end >= $a.len)')
}
if start < 0 {
panic('array.slice: slice bounds out of range ($start < 0)')
}
}
l := end - start
res := array{
@@ -270,8 +288,10 @@ fn (a array) slice_clone(start, _end int) array {
// Private function. Used to implement assigment to the array element.
fn (a mut array) set(i int, val voidptr) {
if i < 0 || i >= a.len {
panic('array.set: index out of range (i == $i, a.len == $a.len)')
$if !no_bounds_checking? {
if i < 0 || i >= a.len {
panic('array.set: index out of range (i == $i, a.len == $a.len)')
}
}
C.memcpy(a.data + a.element_size * i, val, a.element_size)
}