1615 lines
31 KiB
Markdown
1615 lines
31 KiB
Markdown
# HERE SHALL THE DOCUMENTATION RESIDE
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## Enforced Political Views
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- worse is better
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- less is more
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- embrace `unsafe {}`
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- adhere `macro_rules!`
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- pessimization == death (put in `std::pin::Pin` and left with hungry crabs)
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- importing external dependencies == death (`fn(dependencies) -> ExecutionStrategy`)
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- above sell not be disputed, discussed, or questioned
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## What hblang is
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Holey-Bytes-Language (hblang for short) (*.hb) is the only true language targeting hbvm byte code. hblang is low level, manually managed, and procedural. Its rumored to be better then writing hbasm and you should probably use it for complex applications.
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## What hblang isnt't
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hblang knows what it isn't, because it knows what it is, hblang computes this by sub...
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## Examples
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Examples are also used in tests. To add an example that runs during testing add:
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<pre>
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#### <name>
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```hb
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<example>
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```
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</pre>
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and also:
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```rs
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<name>;
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```
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to the `run_tests` macro at the bottom of the `src/son.rs`.
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### Tour Examples
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Following examples incrementally introduce language features and syntax.
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#### main_fn
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```hb
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main := fn(): uint {
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return 1
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}
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```
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#### arithmetic
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```hb
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main := fn(): uint {
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return 10 - 20 / 2 + 4 * (2 + 2) - 4 * 4 + (1 << 0) + -1
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}
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```
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#### floating_point_arithmetic
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```hb
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main := fn(): f32 {
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return 10. - 20. / 2. + 4. * (2. + 2.) - 4. * 4. + -1.
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}
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```
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#### functions
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```hb
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main := fn(): uint {
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return add_one(10) + add_two(20)
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}
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add_two := fn(x: uint): uint {
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return x + 2
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}
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add_one := fn(x: uint): uint {
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return x + 1
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}
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```
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#### comments
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```hb
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// commant is an item
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main := fn(): uint {
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// comment is a statement
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foo(/* comment is an exprression /* if you are crazy */ */)
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return 0
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}
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foo := fn(comment: void): void return /* comment evaluates to void */
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// comments might be formatted in the future
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```
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#### if_statements
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```hb
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main := fn(): uint {
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return fib(10)
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}
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fib := fn(x: uint): uint {
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if x <= 2 {
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return 1
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} else {
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return fib(x - 1) + fib(x - 2)
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}
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}
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```
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#### variables
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```hb
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main := fn(): uint {
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ඞ := 1
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b := 2
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ඞ += 1
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return ඞ - b
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}
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```
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#### loops
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```hb
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main := fn(): uint {
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return fib(10)
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}
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fib := fn(n: uint): uint {
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a := 0
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b := 1
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loop if n == 0 break else {
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c := a + b
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a = b
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b = c
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n -= 1
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}
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return a
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}
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```
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#### pointers
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```hb
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main := fn(): uint {
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a := 1
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b := &a
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boundary := 1000
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b = b + boundary - 2
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b = b - (boundary - 2)
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modify(b)
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drop(a)
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return *b - 2
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}
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modify := fn(a: ^uint): void {
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*a = 2
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return
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}
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drop := fn(a: uint): void {
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return
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}
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```
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#### nullable_types
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```hb
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main := fn(): uint {
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a := &1
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b := @as(?^uint, null)
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if decide() b = a
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if b == null return 9001
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c := @as(?uint, *b)
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if decide() c = null
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if c != null return 42
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d := @as(?u16, null)
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if decide() d = 1
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if d == null return 69
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sf := new_foo()
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if sf == null return 999
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str := "foo\0"
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use_foo(sf, str)
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f := no_foo()
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if decide() f = .(a, 1)
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if f == null return 34
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bar := new_bar(a)
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if decide() bar = null
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if bar != null return 420
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g := @as(?^uint, null)
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g = a
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_rd := *g
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return d - *f.a
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}
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Foo := struct {a: ^uint, b: uint}
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no_foo := fn(): ?Foo return null
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new_foo := fn(): ?Foo return .(&0, 0)
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use_foo := fn(foo: Foo, str: ^u8): void {
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}
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Bar := struct {a: ?^uint, b: uint}
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new_bar := fn(a: ?^uint): ?Bar return .(a, 1)
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decide := fn(): bool return true
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```
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#### structs
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```hb
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Ty := struct {
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// comment
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a: uint,
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}
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Ty2 := struct {
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ty: Ty,
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c: uint,
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}
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useless := struct {}
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main := fn(): uint {
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// `packed` structs have no padding (all fields are alighred to 1)
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if @sizeof(packed struct {a: u8, b: u16}) != 3 {
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return 9001
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}
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finst := Ty2.{ty: .{a: 4}, c: 3}
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inst := odher_pass(finst)
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if inst.c == 3 {
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return pass(&inst.ty)
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}
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return 0
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}
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pass := fn(t: ^Ty): uint {
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return t.a
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}
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odher_pass := fn(t: Ty2): Ty2 {
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return t
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}
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```
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#### hex_octal_binary_literals
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```hb
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main := fn(): uint {
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hex := 0xFF
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decimal := 255
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octal := 0o377
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binary := 0b11111111
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if hex == decimal & octal == decimal & binary == decimal {
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return 0
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}
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return 1
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}
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```
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#### struct_operators
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```hb
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Point := struct {
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x: uint,
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y: uint,
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}
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Rect := struct {
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a: Point,
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b: Point,
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}
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Color := packed struct {b: u8, g: u8, r: u8, a: u8}
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main := fn(): uint {
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i := Color.(0, 0, 0, 0)
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i += .(1, 1, 1, 1)
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if i.r + i.g + i.b + i.a != 4 {
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return 1008
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}
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a := Point.(1, 2)
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b := Point.(3, 4)
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d := Rect.(a + b, b - a)
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zp := Point.(0, 0)
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d2 := Rect.(zp - b, a)
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d2 += d
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c := d2.a + d2.b
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return c.x + c.y
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}
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```
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#### global_variables
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```hb
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global_var := 10
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complex_global_var := fib(global_var) - 5
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fib := fn(n: uint): uint {
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if 2 > n {
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return n
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}
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return fib(n - 1) + fib(n - 2)
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}
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main := fn(): uint {
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complex_global_var += 5
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return complex_global_var
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}
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```
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note: values of global variables are evaluated at compile time
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#### constants
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```hb
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main := fn(): u32 {
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return some_const + 35
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}
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$some_const := 34
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```
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#### directives
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```hb
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foo := @use("foo.hb")
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main := fn(): uint {
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byte := @as(u8, 10)
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same_type_as_byte := @as(@TypeOf(byte), 30)
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wide_uint := @as(u32, 40)
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truncated_uint := @as(u8, @intcast(wide_uint))
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widened_float := @as(f64, @floatcast(1.))
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int_from_float := @as(int, @fti(1.))
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float_from_int := @as(f64, @itf(@as(int, 1)))
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size_of_Type_in_bytes := @sizeof(foo.Type)
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align_of_Type_in_bytes := @alignof(foo.Type)
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hardcoded_pointer := @as(^u8, @bitcast(10))
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ecall_that_returns_uint := @as(uint, @eca(1, foo.Type.(10, 20), 5, 6))
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embedded_array := @as([u8; 15], @embed("text.txt"))
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return @inline(foo.foo)
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}
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// in module: foo.hb
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Type := struct {
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brah: uint,
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blah: uint,
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}
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foo := fn(): uint return 0
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// in module: text.txt
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arbitrary text
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```
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- `@use(<string>)`: imports a module based on relative path, cycles are allowed when importing
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- `@TypeOf(<expr>)`: results into literal type of whatever the type of `<expr>` is, `<expr>` is not included in final binary
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- `@as(<ty>, <expr>)`: hint to the compiler that `@TypeOf(<expr>) == <ty>`
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- `@intcast(<expr>)`: needs to be used when conversion of `@TypeOf(<expr>)` would loose precision (widening of integers is implicit)
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- `@sizeof(<ty>), @alignof(<ty>)`: get size and align of a type in bytes
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- `@bitcast(<expr>)`: tell compiler to assume `@TypeOf(<expr>)` is whatever is inferred, so long as size matches
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- `@eca(...<expr>)`: invoke `eca` instruction, where return type is inferred and `<expr>...` are arguments passed to the call in the standard call convention
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- `@embed(<string>)`: include relative file as an array of bytes
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- `@inline(<func>, ...<args>)`: equivalent to `<func>(...<args>)` but function is guaranteed to inline, compiler will otherwise never inline
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#### c_strings
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```hb
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str_len := fn(str: ^u8): uint {
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len := 0
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loop if *str == 0 break else {
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len += 1
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str += 1
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}
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return len
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}
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main := fn(): uint {
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// when string ends with '\0' its a C string and thus type is '^u8'
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some_str := "abඞ\n\r\t\{35}\{36373839}\0"
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len := str_len(some_str)
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some_other_str := "fff\0"
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lep := str_len(some_other_str)
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return lep + len
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}
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```
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#### struct_patterns
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```hb
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.{fib, fib_iter, Fiber} := @use("fibs.hb")
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main := fn(): uint {
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.{a, b} := Fiber.{a: 10, b: 10}
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return fib(a) - fib_iter(b)
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}
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// in module: fibs.hb
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Fiber := struct {a: u8, b: u8}
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fib := fn(n: uint): uint if n < 2 {
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return n
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} else {
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return fib(n - 1) + fib(n - 2)
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}
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fib_iter := fn(n: uint): uint {
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a := 0
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b := 1
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loop if n == 0 break else {
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c := a + b
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a = b
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b = c
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n -= 1
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}
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return a
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}
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```
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#### arrays
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```hb
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main := fn(): uint {
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addr := @as(u16, 0x1FF)
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msg := [u8].(0, 0, @intcast(addr), @intcast(addr >> 8))
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_force_stack := &msg
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arr := [uint].(1, 2, 4)
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return pass(&arr) + msg[3]
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}
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pass := fn(arr: ^[uint; 3]): uint {
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return arr[0] + arr[1] + arr[arr[1]]
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}
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```
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#### inline
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```hb
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main := fn(): uint {
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return @inline(foo, 1, 2, 3) - bar(3)
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}
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// only for functions with no control flow (if, loop)
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$bar := fn(a: uint): uint return a * 2
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gb := 0
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foo := fn(a: uint, b: uint, c: uint): uint {
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if false | gb != 0 return 1
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return a + b + c
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}
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```
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#### idk
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```hb
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_edge_case := @as(uint, idk)
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main := fn(): uint {
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big_array := @as([u8; 128], idk)
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i := 0
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loop if i >= 128 break else {
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big_array[i] = 69
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i += 1
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}
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return big_array[42]
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}
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```
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note: this does not work on scalar values
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#### generic_functions
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```hb
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add := fn($T: type, a: T, b: T): T return a + b
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main := fn(): uint {
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return add(u32, 2, 2) - add(uint, 1, 3)
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}
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```
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#### die
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```hb
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main := fn(): never {
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// simply emmits 'un' instruction that immediately terminates the execution
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// the expresion has similar properties to 'return' but does not accept a value
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die
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}
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```
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### Incomplete Examples
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#### comptime_pointers
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```hb
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main := fn(): uint {
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$integer := 7
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modify(&integer)
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return integer
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}
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modify := fn($num: ^uint): void {
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$: *num = 0
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}
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```
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#### generic_types
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```hb
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MALLOC_SYS_CALL := 69
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FREE_SYS_CALL := 96
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malloc := fn(size: uint, align: uint): ?^void return @eca(MALLOC_SYS_CALL, size, align)
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free := fn(ptr: ^void, size: uint, align: uint): void return @eca(FREE_SYS_CALL, ptr, size, align)
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Vec := fn($Elem: type): type {
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return struct {
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data: ^Elem,
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len: uint,
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cap: uint,
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}
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}
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new := fn($Elem: type): Vec(Elem) return Vec(Elem).{data: @bitcast(0), len: 0, cap: 0}
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deinit := fn($Elem: type, vec: ^Vec(Elem)): void {
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free(@bitcast(vec.data), vec.cap * @sizeof(Elem), @alignof(Elem));
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*vec = new(Elem)
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return
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}
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push := fn($Elem: type, vec: ^Vec(Elem), value: Elem): ?^Elem {
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if vec.len == vec.cap {
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if vec.cap == 0 {
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vec.cap = 1
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} else {
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vec.cap *= 2
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}
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new_alloc := @as(?^Elem, @bitcast(malloc(vec.cap * @sizeof(Elem), @alignof(Elem))))
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if new_alloc == null return null
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src_cursor := vec.data
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dst_cursor := @as(^Elem, new_alloc)
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end := vec.data + vec.len
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loop if src_cursor == end break else {
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*dst_cursor = *src_cursor
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src_cursor += 1
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dst_cursor += 1
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}
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if vec.len != 0 {
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free(@bitcast(vec.data), vec.len * @sizeof(Elem), @alignof(Elem))
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}
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vec.data = new_alloc
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}
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slot := vec.data + vec.len;
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*slot = value
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vec.len += 1
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return slot
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}
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main := fn(): uint {
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vec := new(uint)
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_f := push(uint, &vec, 69)
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res := *vec.data
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deinit(uint, &vec)
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return res
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}
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```
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#### fb_driver
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```hb
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arm_fb_ptr := fn(): uint return 100
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x86_fb_ptr := fn(): uint return 100
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check_platform := fn(): uint {
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return x86_fb_ptr()
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}
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set_pixel := fn(x: uint, y: uint, width: uint): uint {
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return y * width + x
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}
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main := fn(): uint {
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fb_ptr := check_platform()
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width := 100
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height := 30
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x := 0
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y := 0
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//t := 0
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i := 0
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loop {
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if x < height {
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//t += set_pixel(x, y, height)
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x += 1
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i += 1
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} else {
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x = 0
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y += 1
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if set_pixel(x, y, height) != i return 0
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if y == width break
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}
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}
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return i
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}
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```
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|
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### Purely Testing Examples
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|
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#### storing_into_nullable_struct
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|
```hb
|
|
StructA := struct {b: StructB, c: ^uint, d: uint}
|
|
|
|
StructB := struct {g: ^uint, c: StructC}
|
|
|
|
StructC := struct {c: uint}
|
|
|
|
optionala := fn(): ?StructA {
|
|
return .(.(&0, .(1)), &0, 0)
|
|
}
|
|
|
|
Struct := struct {inner: uint}
|
|
|
|
optional := fn(): ?Struct {
|
|
return .(10)
|
|
}
|
|
|
|
do_stuff := fn(arg: uint): uint {
|
|
return arg
|
|
}
|
|
|
|
just_read := fn(s: StructA): void {
|
|
}
|
|
|
|
main := fn(): uint {
|
|
a := optionala()
|
|
if a == null {
|
|
return 10
|
|
}
|
|
a.b.c = .(0)
|
|
just_read(a)
|
|
innera := do_stuff(a.b.c.c)
|
|
|
|
val := optional()
|
|
if val == null {
|
|
return 20
|
|
}
|
|
val.inner = 100
|
|
inner := do_stuff(val.inner)
|
|
return innera + inner
|
|
}
|
|
```
|
|
|
|
#### scheduling_block_did_dirty
|
|
```hb
|
|
Struct := struct {
|
|
pad: uint,
|
|
pad2: uint,
|
|
}
|
|
|
|
file := [u8].(255)
|
|
|
|
opaque := fn(x: uint): uint {
|
|
return file[x]
|
|
}
|
|
|
|
constructor := fn(x: uint): Struct {
|
|
a := opaque(x)
|
|
return .(a, a)
|
|
}
|
|
|
|
main := fn(): void {
|
|
something := constructor(0)
|
|
return
|
|
}
|
|
```
|
|
|
|
#### null_check_returning_small_global
|
|
```hb
|
|
MAGIC := 127
|
|
get := fn(file: ^u8): ?uint {
|
|
if *file == MAGIC {
|
|
return MAGIC
|
|
} else {
|
|
return null
|
|
}
|
|
}
|
|
|
|
some_file := [u8].(127, 255, 255, 255, 255, 255)
|
|
|
|
foo := fn(): ?uint {
|
|
gotten := get(&some_file[0])
|
|
if gotten == null {
|
|
return null
|
|
} else if gotten == 4 {
|
|
return 2
|
|
} else if gotten == MAGIC {
|
|
return 0
|
|
}
|
|
|
|
return null
|
|
}
|
|
|
|
main := fn(): uint {
|
|
f := foo()
|
|
if f == null return 100
|
|
return f
|
|
}
|
|
```
|
|
|
|
#### null_check_in_the_loop
|
|
```hb
|
|
A := struct {
|
|
x_change: u8,
|
|
y_change: u8,
|
|
left: u8,
|
|
middle: u8,
|
|
right: u8,
|
|
}
|
|
|
|
return_fn := fn(): ?A {
|
|
return A.(0, 0, 0, 0, 0)
|
|
}
|
|
|
|
main := fn(): int {
|
|
loop {
|
|
ret := return_fn()
|
|
if ret != null {
|
|
return 1
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
#### stack_provenance
|
|
```hb
|
|
main := fn(): uint {
|
|
return *dangle()
|
|
}
|
|
dangle := fn(): ^uint return &0
|
|
```
|
|
|
|
#### advanced_floating_point_arithmetic
|
|
```hb
|
|
SIN_TABLE := [f32].(0.0, 0.02454122852291229, 0.04906767432741801, 0.07356456359966743, 0.0980171403295606, 0.1224106751992162, 0.1467304744553617, 0.1709618887603012, 0.1950903220161282, 0.2191012401568698, 0.2429801799032639, 0.2667127574748984, 0.2902846772544623, 0.3136817403988915, 0.3368898533922201, 0.3598950365349881, 0.3826834323650898, 0.4052413140049899, 0.4275550934302821, 0.4496113296546065, 0.4713967368259976, 0.492898192229784, 0.5141027441932217, 0.5349976198870972, 0.5555702330196022, 0.5758081914178453, 0.5956993044924334, 0.6152315905806268, 0.6343932841636455, 0.6531728429537768, 0.6715589548470183, 0.6895405447370668, 0.7071067811865475, 0.7242470829514669, 0.7409511253549591, 0.7572088465064845, 0.773010453362737, 0.7883464276266062, 0.8032075314806448, 0.8175848131515837, 0.8314696123025452, 0.844853565249707, 0.8577286100002721, 0.8700869911087113, 0.8819212643483549, 0.8932243011955153, 0.9039892931234433, 0.9142097557035307, 0.9238795325112867, 0.9329927988347388, 0.9415440651830208, 0.9495281805930367, 0.9569403357322089, 0.9637760657954398, 0.970031253194544, 0.9757021300385286, 0.9807852804032304, 0.9852776423889412, 0.989176509964781, 0.99247953459871, 0.9951847266721968, 0.9972904566786902, 0.9987954562051724, 0.9996988186962042, 1.0, 0.9996988186962042, 0.9987954562051724, 0.9972904566786902, 0.9951847266721969, 0.99247953459871, 0.989176509964781, 0.9852776423889412, 0.9807852804032304, 0.9757021300385286, 0.970031253194544, 0.9637760657954398, 0.9569403357322089, 0.9495281805930367, 0.9415440651830208, 0.9329927988347388, 0.9238795325112867, 0.9142097557035307, 0.9039892931234434, 0.8932243011955152, 0.881921264348355, 0.8700869911087115, 0.8577286100002721, 0.8448535652497072, 0.8314696123025455, 0.8175848131515837, 0.8032075314806449, 0.7883464276266063, 0.7730104533627371, 0.7572088465064847, 0.740951125354959, 0.7242470829514669, 0.7071067811865476, 0.6895405447370671, 0.6715589548470186, 0.6531728429537766, 0.6343932841636455, 0.6152315905806269, 0.5956993044924335, 0.5758081914178454, 0.5555702330196022, 0.5349976198870972, 0.5141027441932218, 0.4928981922297841, 0.4713967368259979, 0.4496113296546069, 0.427555093430282, 0.4052413140049899, 0.3826834323650899, 0.3598950365349883, 0.3368898533922203, 0.3136817403988914, 0.2902846772544624, 0.2667127574748985, 0.2429801799032641, 0.21910124015687, 0.1950903220161286, 0.1709618887603012, 0.1467304744553618, 0.1224106751992163, 0.09801714032956083, 0.07356456359966773, 0.04906767432741797, 0.02454122852291233, 0.0, -0.02454122852291208, -0.04906767432741772, -0.0735645635996675, -0.09801714032956059, -0.1224106751992161, -0.1467304744553616, -0.170961888760301, -0.1950903220161284, -0.2191012401568698, -0.2429801799032638, -0.2667127574748983, -0.2902846772544621, -0.3136817403988912, -0.3368898533922201, -0.3598950365349881, -0.3826834323650897, -0.4052413140049897, -0.4275550934302818, -0.4496113296546067, -0.4713967368259976, -0.4928981922297839, -0.5141027441932216, -0.5349976198870969, -0.555570233019602, -0.5758081914178453, -0.5956993044924332, -0.6152315905806267, -0.6343932841636453, -0.6531728429537765, -0.6715589548470184, -0.6895405447370668, -0.7071067811865475, -0.7242470829514668, -0.7409511253549589, -0.7572088465064842, -0.7730104533627367, -0.7883464276266059, -0.8032075314806451, -0.8175848131515838, -0.8314696123025452, -0.844853565249707, -0.857728610000272, -0.8700869911087113, -0.8819212643483549, -0.8932243011955152, -0.9039892931234431, -0.9142097557035305, -0.9238795325112865, -0.932992798834739, -0.9415440651830208, -0.9495281805930367, -0.9569403357322088, -0.9637760657954398, -0.970031253194544, -0.9757021300385285, -0.9807852804032303, -0.9852776423889411, -0.9891765099647809, -0.9924795345987101, -0.9951847266721969, -0.9972904566786902, -0.9987954562051724, -0.9996988186962042, -1.0, -0.9996988186962042, -0.9987954562051724, -0.9972904566786902, -0.9951847266721969, -0.9924795345987101, -0.9891765099647809, -0.9852776423889412, -0.9807852804032304, -0.9757021300385286, -0.970031253194544, -0.96377606579544, -0.9569403357322089, -0.9495281805930368, -0.9415440651830209, -0.9329927988347391, -0.9238795325112866, -0.9142097557035306, -0.9039892931234433, -0.8932243011955153, -0.881921264348355, -0.8700869911087115, -0.8577286100002722, -0.8448535652497072, -0.8314696123025455, -0.817584813151584, -0.8032075314806453, -0.7883464276266061, -0.7730104533627369, -0.7572088465064846, -0.7409511253549591, -0.724247082951467, -0.7071067811865477, -0.6895405447370672, -0.6715589548470187, -0.6531728429537771, -0.6343932841636459, -0.6152315905806274, -0.5956993044924332, -0.5758081914178452, -0.5555702330196022, -0.5349976198870973, -0.5141027441932219, -0.4928981922297843, -0.4713967368259979, -0.449611329654607, -0.4275550934302825, -0.4052413140049904, -0.3826834323650904, -0.359895036534988, -0.33688985339222, -0.3136817403988915, -0.2902846772544625, -0.2667127574748986, -0.2429801799032642, -0.2191012401568702, -0.1950903220161287, -0.1709618887603018, -0.1467304744553624, -0.122410675199216, -0.09801714032956051, -0.07356456359966741, -0.04906767432741809, -0.02454122852291245)
|
|
|
|
sin := fn(theta: f32): f32 {
|
|
PI := 3.14159265358979323846
|
|
TABLE_SIZE := @as(i32, 256)
|
|
si := @fti(theta * 0.5 * @itf(TABLE_SIZE) / PI)
|
|
d := theta - @floatcast(@itf(si)) * 2.0 * PI / @itf(TABLE_SIZE)
|
|
ci := si + TABLE_SIZE / 4 & TABLE_SIZE - 1
|
|
si &= TABLE_SIZE - 1
|
|
return SIN_TABLE[@bitcast(si)] + (SIN_TABLE[@bitcast(ci)] - 0.5 * SIN_TABLE[@bitcast(si)] * d) * d
|
|
}
|
|
|
|
main := fn(): int {
|
|
// expected result: 826
|
|
return @fti(sin(1000.0) * 1000.0)
|
|
}
|
|
```
|
|
|
|
#### nullable_structure
|
|
```hb
|
|
Structure := struct {}
|
|
|
|
BigStructure := struct {a: uint, b: uint}
|
|
|
|
MidStructure := struct {a: u8}
|
|
|
|
returner_fn := fn(): ?Structure {
|
|
return .()
|
|
}
|
|
returner_bn := fn(): ?BigStructure {
|
|
return .(0, 0)
|
|
}
|
|
returner_cn := fn(): ?MidStructure {
|
|
return .(0)
|
|
}
|
|
|
|
main := fn(): int {
|
|
ret := returner_fn()
|
|
bet := returner_bn()
|
|
cet := returner_cn()
|
|
if ret != null & bet != null & cet != null {
|
|
return 1
|
|
}
|
|
|
|
return 0
|
|
}
|
|
```
|
|
|
|
#### needless_unwrap
|
|
```hb
|
|
main := fn(): uint {
|
|
always_nn := @as(?^uint, &0)
|
|
ptr := @unwrap(always_nn)
|
|
always_n := @as(?^uint, null)
|
|
ptr = @unwrap(always_n)
|
|
return *ptr
|
|
}
|
|
```
|
|
|
|
#### optional_from_eca
|
|
```hb
|
|
main := fn(): uint {
|
|
a := @as(?uint, @eca(0, 0, 0, 0))
|
|
|
|
if a == null {
|
|
die
|
|
}
|
|
return a
|
|
}
|
|
```
|
|
|
|
#### returning_optional_issues
|
|
```hb
|
|
BMP := 0
|
|
|
|
get_format := fn(): ?uint {
|
|
return BMP
|
|
}
|
|
|
|
main := fn(): uint {
|
|
fmt := get_format()
|
|
if fmt == null {
|
|
return 1
|
|
} else {
|
|
return fmt
|
|
}
|
|
}
|
|
```
|
|
|
|
#### inlining_issues
|
|
```hb
|
|
main := fn(): void {
|
|
@use("main.hb").put_filled_rect(.(&.(0), 100, 100), .(0, 0), .(0, 0), .(1))
|
|
}
|
|
|
|
// in module: memory.hb
|
|
|
|
SetMsg := packed struct {a: u8, count: u32, size: u32, src: ^u8, dest: ^u8}
|
|
set := fn($Expr: type, src: ^Expr, dest: ^Expr, count: uint): void {
|
|
return @eca(8, 2, &SetMsg.(5, @intcast(count), @intcast(@sizeof(Expr)), @bitcast(src), @bitcast(dest)), @sizeof(SetMsg))
|
|
}
|
|
|
|
// in module: main.hb
|
|
|
|
Color := struct {r: u8}
|
|
|
|
Vec2 := fn($Ty: type): type return struct {x: Ty, y: Ty}
|
|
|
|
memory := @use("memory.hb")
|
|
|
|
Surface := struct {
|
|
buf: ^Color,
|
|
width: uint,
|
|
height: uint,
|
|
}
|
|
|
|
indexptr := fn(surface: Surface, x: uint, y: uint): ^Color {
|
|
return surface.buf + y * surface.width + x
|
|
}
|
|
|
|
put_filled_rect := fn(surface: Surface, pos: Vec2(uint), tr: Vec2(uint), color: Color): void {
|
|
top_start_idx := @inline(indexptr, surface, pos.x, pos.y)
|
|
bottom_start_idx := @inline(indexptr, surface, pos.x, pos.y + tr.y - 1)
|
|
rows_to_fill := tr.y
|
|
|
|
loop if rows_to_fill <= 1 break else {
|
|
@inline(memory.set, Color, &color, top_start_idx, @bitcast(tr.x))
|
|
@inline(memory.set, Color, &color, bottom_start_idx, @bitcast(tr.x))
|
|
|
|
top_start_idx += surface.width
|
|
bottom_start_idx -= surface.width
|
|
rows_to_fill -= 2
|
|
}
|
|
|
|
if rows_to_fill == 1 {
|
|
@inline(memory.set, Color, &color, top_start_idx, @bitcast(tr.x))
|
|
}
|
|
|
|
return
|
|
}
|
|
```
|
|
|
|
#### only_break_loop
|
|
```hb
|
|
memory := @use("memory.hb")
|
|
|
|
bar := fn(): int {
|
|
loop if memory.inb(0x64) != 0 return 1
|
|
}
|
|
|
|
foo := fn(): void {
|
|
loop if (memory.inb(0x64) & 2) == 0 break
|
|
memory.outb(0x60, 0x0)
|
|
}
|
|
|
|
main := fn(): int {
|
|
@inline(foo)
|
|
return @inline(bar)
|
|
}
|
|
|
|
// in module: memory.hb
|
|
inb := fn(f: int): int return f
|
|
outb := fn(f: int, g: int): void {
|
|
}
|
|
```
|
|
|
|
#### reading_idk
|
|
```hb
|
|
main := fn(): int {
|
|
a := @as(int, idk)
|
|
return a
|
|
}
|
|
```
|
|
|
|
#### nonexistent_ident_import
|
|
```hb
|
|
main := @use("foo.hb").main
|
|
// in module: foo.hb
|
|
foo := fn(): void {
|
|
return
|
|
}
|
|
foo := fn(): void {
|
|
return
|
|
}
|
|
main := @use("bar.hb").mian
|
|
// in module: bar.hb
|
|
main := fn(): void {
|
|
return
|
|
}
|
|
```
|
|
|
|
#### big_array_crash
|
|
```hb
|
|
SIN_TABLE := [int].(0, 174, 348, 523, 697, 871, 1045, 1218, 1391, 1564, 1736, 1908, 2079, 2249, 2419, 2588, 2756, 2923, 3090, 3255, 3420, 3583, 3746, 3907, 4067, 4226, 4384, 4540, 4695, 4848, 5000, 5150, 5299, 5446, 5591, 5735, 5877, 6018, 6156, 6293, 6427, 6560, 6691, 6819, 6946, 7071, 7193, 7313, 7431, 7547, 7660, 7771, 7880, 7986, 8090, 8191, 8290, 8386, 8480, 8571, 8660, 8746, 8829, 8910, 8987, 9063, 9135, 9205, 9271, 9335, 9396, 9455, 9510, 9563, 9612, 9659, 9702, 9743, 9781, 9816, 9848, 9877, 9902, 9925, 9945, 9961, 9975, 9986, 9993, 9998, 10000)
|
|
|
|
main := fn(): int return SIN_TABLE[10]
|
|
```
|
|
|
|
#### returning_global_struct
|
|
```hb
|
|
Color := struct {r: u8, g: u8, b: u8, a: u8}
|
|
white := Color.(255, 255, 255, 255)
|
|
random_color := fn(): Color {
|
|
return white
|
|
}
|
|
main := fn(): uint {
|
|
val := random_color()
|
|
return @as(uint, val.r) + val.g + val.b + val.a
|
|
}
|
|
```
|
|
|
|
#### small_struct_bitcast
|
|
```hb
|
|
Color := struct {r: u8, g: u8, b: u8, a: u8}
|
|
white := Color.(255, 255, 255, 255)
|
|
u32_to_color := fn(v: u32): Color return @as(Color, @bitcast(u32_to_u32(@bitcast(v))))
|
|
u32_to_u32 := fn(v: u32): u32 return v
|
|
main := fn(): uint {
|
|
return u32_to_color(@bitcast(white)).r
|
|
}
|
|
```
|
|
|
|
#### small_struct_assignment
|
|
```hb
|
|
Color := struct {r: u8, g: u8, b: u8, a: u8}
|
|
white := Color.(255, 255, 255, 255)
|
|
black := Color.(0, 0, 0, 0)
|
|
main := fn(): uint {
|
|
f := black
|
|
f = white
|
|
return f.a
|
|
}
|
|
```
|
|
|
|
#### intcast_store
|
|
```hb
|
|
SetMsg := packed struct {a: u8, count: u32, size: u32, src: ^u8, dest: ^u8}
|
|
set := fn($Expr: type, src: ^Expr, dest: ^Expr, count: uint): u32 {
|
|
l := SetMsg.(5, @intcast(count), @intcast(@sizeof(Expr)), @bitcast(src), @bitcast(dest))
|
|
return l.count
|
|
}
|
|
|
|
main := fn(): uint {
|
|
return set(uint, &0, &0, 1024)
|
|
}
|
|
```
|
|
|
|
#### string_flip
|
|
```hb
|
|
U := struct {u: uint}
|
|
main := fn(): uint {
|
|
arr := @as([U; 2 * 2], idk)
|
|
|
|
i := 0
|
|
loop if i == 2 * 2 break else {
|
|
arr[i] = .(i)
|
|
i += 1
|
|
}
|
|
|
|
i = 0
|
|
loop if i == 2 / 2 break else {
|
|
j := 0
|
|
loop if j == 2 break else {
|
|
a := i * 2 + j
|
|
b := (2 - i - 1) * 2 + j
|
|
tmp := arr[a]
|
|
arr[a] = arr[b]
|
|
arr[b] = tmp
|
|
j += 1
|
|
}
|
|
i += 1
|
|
}
|
|
|
|
return arr[0].u
|
|
}
|
|
```
|
|
|
|
#### wide_ret
|
|
```hb
|
|
OemIdent := struct {
|
|
dos_version: [u8; 8],
|
|
dos_version_name: [u8; 8],
|
|
}
|
|
|
|
Stru := struct {
|
|
a: u16,
|
|
b: u16,
|
|
}
|
|
|
|
small_struct := fn(): Stru {
|
|
return .{a: 0, b: 0}
|
|
}
|
|
|
|
maina := fn(major: uint, minor: uint): OemIdent {
|
|
_f := small_struct()
|
|
ver := [u8].(0, 0, 0, 3, 1, 0, 0, 0)
|
|
return OemIdent.(ver, ver)
|
|
}
|
|
|
|
main := fn(): uint {
|
|
m := maina(0, 0)
|
|
return m.dos_version[3] - m.dos_version_name[4]
|
|
}
|
|
```
|
|
|
|
#### comptime_min_reg_leak
|
|
```hb
|
|
a := @use("math.hb").min(100, 50)
|
|
|
|
main := fn(): uint {
|
|
return a
|
|
}
|
|
|
|
// in module: math.hb
|
|
|
|
SIZEOF_uint := 32
|
|
SHIFT := SIZEOF_uint - 1
|
|
min := fn(a: uint, b: uint): uint {
|
|
c := a - b
|
|
return b + (c & c >> SHIFT)
|
|
}
|
|
```
|
|
|
|
#### different_types
|
|
```hb
|
|
Color := struct {
|
|
r: u8,
|
|
g: u8,
|
|
b: u8,
|
|
a: u8,
|
|
}
|
|
|
|
Point := struct {
|
|
x: u32,
|
|
y: u32,
|
|
}
|
|
|
|
Pixel := struct {
|
|
color: Color,
|
|
pouint: Point,
|
|
}
|
|
|
|
main := fn(): uint {
|
|
pixel := Pixel.{
|
|
color: Color.{
|
|
r: 255,
|
|
g: 0,
|
|
b: 0,
|
|
a: 255,
|
|
},
|
|
pouint: Point.{
|
|
x: 0,
|
|
y: 2,
|
|
},
|
|
}
|
|
|
|
soupan := 1
|
|
if *(&pixel.pouint.x + soupan) != 2 {
|
|
return 0
|
|
}
|
|
|
|
if *(&pixel.pouint.y - 1) != 0 {
|
|
return 64
|
|
}
|
|
|
|
return pixel.pouint.x + pixel.pouint.y + pixel.color.r
|
|
+ pixel.color.g + pixel.color.b + pixel.color.a
|
|
}
|
|
```
|
|
|
|
#### struct_return_from_module_function
|
|
```hb
|
|
bar := @use("bar.hb")
|
|
|
|
main := fn(): uint {
|
|
return 7 - bar.foo().x - bar.foo().y - bar.foo().z
|
|
}
|
|
|
|
// in module: bar.hb
|
|
|
|
|
|
foo := fn(): Foo {
|
|
return .{x: 3, y: 2, z: 2}
|
|
}
|
|
|
|
Foo := struct {x: uint, y: u32, z: u32}
|
|
```
|
|
|
|
#### sort_something_viredly
|
|
```hb
|
|
main := fn(): uint {
|
|
return sqrt(100)
|
|
}
|
|
|
|
sqrt := fn(x: uint): uint {
|
|
temp := 0
|
|
g := 0
|
|
b := 32768
|
|
bshift := 15
|
|
loop if b == 0 {
|
|
break
|
|
} else {
|
|
bshift -= 1
|
|
temp = b + (g << 1)
|
|
temp <<= bshift
|
|
if x >= temp {
|
|
g += b
|
|
x -= temp
|
|
}
|
|
b >>= 1
|
|
}
|
|
return g
|
|
}
|
|
```
|
|
|
|
#### struct_in_register
|
|
```hb
|
|
ColorBGRA := struct {b: u8, g: u8, r: u8, a: u8}
|
|
MAGENTA := ColorBGRA.{b: 205, g: 0, r: 205, a: 255}
|
|
|
|
main := fn(): uint {
|
|
color := MAGENTA
|
|
return color.r
|
|
}
|
|
```
|
|
|
|
#### comptime_function_from_another_file
|
|
```hb
|
|
stn := @use("stn.hb")
|
|
|
|
CONST_A := 100
|
|
CONST_B := 50
|
|
a := stn.math.min(CONST_A, CONST_B)
|
|
|
|
main := fn(): uint {
|
|
return a
|
|
}
|
|
|
|
// in module: stn.hb
|
|
math := @use("math.hb")
|
|
|
|
// in module: math.hb
|
|
SIZEOF_uint := 32
|
|
SHIFT := SIZEOF_uint - 1
|
|
min := fn(a: uint, b: uint): uint {
|
|
c := a - b
|
|
return b + (c & c >> SHIFT)
|
|
}
|
|
```
|
|
|
|
#### inline_test
|
|
```hb
|
|
fna := fn(a: uint, b: uint, c: uint): uint return a + b + c
|
|
|
|
scalar_values := fn(): uint {
|
|
return @inline(fna, 1, @inline(fna, 2, 3, 4), -10)
|
|
}
|
|
|
|
A := struct {a: uint}
|
|
AB := struct {a: A, b: uint}
|
|
|
|
mangle := fn(a: A, ab: AB): uint {
|
|
return a.a + ab.a.a - ab.b
|
|
}
|
|
|
|
structs := fn(): uint {
|
|
return @inline(mangle, .(0), .(.(@inline(mangle, .(20), .(.(5), 5))), 20))
|
|
}
|
|
|
|
main := fn(): uint {
|
|
if scalar_values() != 0 return 1
|
|
if structs() != 0 return structs()
|
|
|
|
return 0
|
|
}
|
|
```
|
|
|
|
#### inlined_generic_functions
|
|
```hb
|
|
abs := fn($Expr: type, x: Expr): Expr {
|
|
mask := x >> @bitcast(@sizeof(Expr) - 1)
|
|
return (x ^ mask) - mask
|
|
}
|
|
|
|
main := fn(): uint {
|
|
return @inline(abs, uint, -10)
|
|
}
|
|
```
|
|
|
|
#### some_generic_code
|
|
```hb
|
|
some_func := fn($Elem: type): void {
|
|
return
|
|
}
|
|
|
|
main := fn(): void {
|
|
some_func(u8)
|
|
return
|
|
}
|
|
```
|
|
|
|
#### integer_inference_issues
|
|
```hb
|
|
.{integer_range} := @use("random.hb")
|
|
main := fn(): void {
|
|
a := integer_range(0, 1000)
|
|
return
|
|
}
|
|
|
|
// in module: random.hb
|
|
integer_range := fn(min: uint, max: uint): uint {
|
|
return @eca(3, 4) % (@bitcast(max) - min + 1) + min
|
|
}
|
|
```
|
|
|
|
#### signed_to_unsigned_upcast
|
|
```hb
|
|
main := fn(): uint return @as(i32, 1)
|
|
```
|
|
|
|
#### writing_into_string
|
|
```hb
|
|
outl := fn(): void {
|
|
msg := "whahaha\0"
|
|
_u := @as(u8, 0)
|
|
return
|
|
}
|
|
|
|
inl := fn(): void {
|
|
msg := "luhahah\0"
|
|
return
|
|
}
|
|
|
|
main := fn(): void {
|
|
outl()
|
|
inl()
|
|
return
|
|
}
|
|
```
|
|
|
|
#### request_page
|
|
```hb
|
|
request_page := fn(page_count: u8): ^u8 {
|
|
msg := "\{00}\{01}xxxxxxxx\0"
|
|
msg_page_count := msg + 1;
|
|
*msg_page_count = page_count
|
|
return @eca(3, 2, msg, 12)
|
|
}
|
|
|
|
create_back_buffer := fn(total_pages: int): ^u32 {
|
|
if total_pages <= 0xFF {
|
|
return @bitcast(request_page(@intcast(total_pages)))
|
|
}
|
|
ptr := request_page(255)
|
|
remaining := total_pages - 0xFF
|
|
loop if remaining <= 0 break else {
|
|
if remaining < 0xFF {
|
|
_ = request_page(@intcast(remaining))
|
|
} else {
|
|
_ = request_page(0xFF)
|
|
}
|
|
remaining -= 0xFF
|
|
}
|
|
return @bitcast(ptr)
|
|
}
|
|
|
|
main := fn(): void {
|
|
_f := create_back_buffer(400)
|
|
return
|
|
}
|
|
```
|
|
|
|
#### tests_ptr_to_ptr_copy
|
|
```hb
|
|
main := fn(): uint {
|
|
back_buffer := @as([u8; 1024 * 10], idk)
|
|
|
|
n := 0
|
|
loop if n >= 1024 break else {
|
|
back_buffer[n] = 64
|
|
n += 1
|
|
}
|
|
n = 1
|
|
loop if n >= 10 break else {
|
|
*(@as(^[u8; 1024], @bitcast(&back_buffer)) + n) = *@as(^[u8; 1024], @bitcast(&back_buffer))
|
|
n += 1
|
|
}
|
|
return back_buffer[1024 * 2]
|
|
}
|
|
```
|
|
|
|
### Just Testing Optimizations
|
|
|
|
#### null_check_test
|
|
```hb
|
|
get_ptr := fn(): ?^uint return null
|
|
|
|
main := fn(): uint {
|
|
ptr := get_ptr()
|
|
|
|
if ptr == null {
|
|
return 0
|
|
}
|
|
|
|
loop if *ptr != 10 {
|
|
*ptr += 1
|
|
} else break
|
|
|
|
return *ptr
|
|
}
|
|
```
|
|
|
|
#### const_folding_with_arg
|
|
```hb
|
|
main := fn(arg: uint): uint {
|
|
// reduces to 0
|
|
return arg + 0 - arg * 1 + arg + 1 + arg + 2 + arg + 3 - arg * 3 - 6
|
|
}
|
|
```
|
|
|
|
#### branch_assignments
|
|
```hb
|
|
main := fn(arg: uint): uint {
|
|
if arg == 1 {
|
|
arg = 1
|
|
} else if arg == 0 {
|
|
arg = 2
|
|
} else {
|
|
arg = 3
|
|
}
|
|
return arg
|
|
}
|
|
```
|
|
|
|
#### exhaustive_loop_testing
|
|
```hb
|
|
main := fn(): uint {
|
|
loop break
|
|
|
|
x := 0
|
|
loop {
|
|
x += 1
|
|
break
|
|
}
|
|
|
|
if multiple_breaks(0) != 3 {
|
|
return 1
|
|
}
|
|
|
|
if multiple_breaks(4) != 10 {
|
|
return 2
|
|
}
|
|
|
|
if state_change_in_break(0) != 0 {
|
|
return 3
|
|
}
|
|
|
|
if state_change_in_break(4) != 10 {
|
|
return 4
|
|
}
|
|
|
|
if continue_and_state_change(10) != 10 {
|
|
return 5
|
|
}
|
|
|
|
if continue_and_state_change(3) != 0 {
|
|
return 6
|
|
}
|
|
|
|
infinite_loop()
|
|
return 0
|
|
}
|
|
|
|
infinite_loop := fn(): void {
|
|
f := 0
|
|
loop {
|
|
if f == 1 {
|
|
f = 0
|
|
} else {
|
|
f = 1
|
|
}
|
|
|
|
f = continue_and_state_change(0)
|
|
}
|
|
}
|
|
|
|
multiple_breaks := fn(arg: uint): uint {
|
|
loop if arg < 10 {
|
|
arg += 1
|
|
if arg == 3 break
|
|
} else break
|
|
return arg
|
|
}
|
|
|
|
state_change_in_break := fn(arg: uint): uint {
|
|
loop if arg < 10 {
|
|
if arg == 3 {
|
|
arg = 0
|
|
break
|
|
}
|
|
arg += 1
|
|
} else break
|
|
return arg
|
|
}
|
|
|
|
continue_and_state_change := fn(arg: uint): uint {
|
|
loop if arg < 10 {
|
|
if arg == 2 {
|
|
arg = 4
|
|
continue
|
|
}
|
|
if arg == 3 {
|
|
arg = 0
|
|
break
|
|
}
|
|
arg += 1
|
|
} else break
|
|
return arg
|
|
}
|
|
```
|
|
|
|
#### pointer_opts
|
|
```hb
|
|
main := fn(): uint {
|
|
mem := &0;
|
|
*mem = 1;
|
|
*mem = 2
|
|
|
|
b := *mem + *mem
|
|
clobber(mem)
|
|
|
|
b -= *mem
|
|
return b
|
|
}
|
|
|
|
clobber := fn(cb: ^uint): void {
|
|
*cb = 4
|
|
return
|
|
}
|
|
```
|
|
|
|
#### conditional_stores
|
|
```hb
|
|
main := fn(): uint {
|
|
cnd := cond()
|
|
mem := &1
|
|
|
|
if cnd == 0 {
|
|
*mem = 0
|
|
} else {
|
|
*mem = 2
|
|
}
|
|
|
|
return *mem
|
|
}
|
|
|
|
cond := fn(): uint return 0
|
|
```
|
|
|
|
#### loop_stores
|
|
```hb
|
|
main := fn(): uint {
|
|
mem := &10
|
|
|
|
loop if *mem == 0 break else {
|
|
*mem -= 1
|
|
}
|
|
|
|
return *mem
|
|
}
|
|
```
|
|
|
|
#### dead_code_in_loop
|
|
```hb
|
|
main := fn(): uint {
|
|
n := 0
|
|
|
|
loop if n < 10 {
|
|
if n < 10 break
|
|
n += 1
|
|
} else break
|
|
|
|
loop if n == 0 return n
|
|
|
|
return 1
|
|
}
|
|
```
|
|
|
|
#### infinite_loop_after_peephole
|
|
```hb
|
|
main := fn(): uint {
|
|
n := 0
|
|
f := 0
|
|
loop if n != 0 break else {
|
|
f += 1
|
|
}
|
|
return f
|
|
}
|
|
```
|
|
|
|
#### aliasing_overoptimization
|
|
```hb
|
|
Foo := struct {ptr: ^uint, rnd: uint}
|
|
|
|
main := fn(): uint {
|
|
mem := &2
|
|
stru := Foo.(mem, 0);
|
|
*stru.ptr = 0
|
|
return *mem
|
|
}
|
|
```
|
|
|
|
#### global_aliasing_overptimization
|
|
```hb
|
|
var := 0
|
|
|
|
main := fn(): uint {
|
|
var = 2
|
|
clobber()
|
|
return var
|
|
}
|
|
|
|
clobber := fn(): void {
|
|
var = 0
|
|
}
|
|
```
|
|
|
|
#### overwrite_aliasing_overoptimization
|
|
```hb
|
|
Foo := struct {a: int, b: int}
|
|
Bar := struct {f: Foo, b: int}
|
|
|
|
main := fn(): int {
|
|
value := Bar.{b: 1, f: .(4, 1)}
|
|
value.f = opaque()
|
|
return value.f.a - value.f.b - value.b
|
|
}
|
|
|
|
opaque := fn(): Foo {
|
|
return .(3, 2)
|
|
}
|
|
```
|
|
|
|
#### more_if_opts
|
|
```hb
|
|
main := fn(): uint {
|
|
opq1 := opaque()
|
|
opq2 := opaque()
|
|
a := 0
|
|
|
|
if opq1 == null {
|
|
} else a = *opq1
|
|
if opq1 != null a = *opq1
|
|
//if opq1 == null | opq2 == null {
|
|
//} else a = *opq1
|
|
//if opq1 != null & opq2 != null a = *opq1
|
|
|
|
return a
|
|
}
|
|
|
|
opaque := fn(): ?^uint return null
|
|
```
|