diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/DATS/itoa.dats | 63 | ||||
| -rw-r--r-- | lib/DATS/writer.dats | 91 | ||||
| -rw-r--r-- | lib/SATS/writer.sats | 32 |
3 files changed, 186 insertions, 0 deletions
diff --git a/lib/DATS/itoa.dats b/lib/DATS/itoa.dats new file mode 100644 index 0000000..35b8c47 --- /dev/null +++ b/lib/DATS/itoa.dats @@ -0,0 +1,63 @@ +#include "share/atspre_staload.hats" + +#define ATS_DYNLOADFLAG 0 + + +fun reverse {l : addr} {n,m:nat | n < m} (pf : !(@[char][m] @ l) | p : ptr l, n : int n) : void = let + fun loop {i,j,n:nat | i < j && j < n} (pf : !(@[char][n] @ l) | p : ptr l , i : int i, j : int j) : void = let + val tmp = p->[i] + in + p->[i] := p->[j]; + p->[j] := tmp; + if (i+1 < j-1) then + loop(pf | p, i+1,j-1) + end +in + if (n > 0) then + loop(pf | p, 0, n) +end + +local + +#define BUFFER_SIZE 50 + +staload UN = "prelude/SATS/unsafe.sats" + +extern castfn char_arr2string (arr : &(@[char][BUFFER_SIZE])) : [n : nat | n < BUFFER_SIZE] string n +extern praxi __assert {l:addr} (ptr: ptr (l)): vtakeout0 (@[char][BUFFER_SIZE]@l) +var buffer : @[char][BUFFER_SIZE] // Size should be BUFFER_SIZE + +in + +//TODO: make function better by handling to large number for buffer + +extern fun itoa {v,n:nat | n > 1 && n < 33 && v > 0} (value : int v, base : int n) : [k : nat | k < BUFFER_SIZE] string k +implement itoa(value,base) = let + prval (pf , fpf) = __assert(addr@buffer) // Get proofs UNSAFE: + + fun loop {n,i : nat | n > 0 && i < BUFFER_SIZE} {l:addr} (pf : !(@[char][BUFFER_SIZE] @ l) | p : ptr l , n : int n, i : size_t i): void = let + val r = n % base + val k = n / base + in + if (r >= 10) then + p->[i] := $UN.cast{char}(65 + (r - 10)) + else + p->[i] := $UN.cast{char}(48 + r); + + if (i + 2 < BUFFER_SIZE) then + if (k > 0) then + loop(pf | p, k, succ(i)) + else ( + p->[succ(i)] := '\0'; + reverse(pf | p, sz2i(i))) + end + + // Run loop + val () = loop(pf | addr@buffer, value, i2sz(0)); + val str = char_arr2string(buffer); // Convert arr to string UNSAFE: +in + let prval () = fpf(pf) in end; + str // Return string +end + +end diff --git a/lib/DATS/writer.dats b/lib/DATS/writer.dats new file mode 100644 index 0000000..24246a1 --- /dev/null +++ b/lib/DATS/writer.dats @@ -0,0 +1,91 @@ +#include "share/atspre_staload.hats" + +staload "lib/SATS/writer.sats" + +#define ATS_DYNLOADFLAG 0 + +%{^ + #define get_buffer() ((void *) 0xB8000) +%} + +extern fun get_buffer():<> buffer = "mac#" +extern prfun eat_buffer (pf: buffer): void +extern fun getref (): [l:addr] vtakeoutptr (writer) + +fun color_value(c : color): uint8 = + case+ c of + | Black() => i2u8 0 + | Blue() => i2u8 1 + | Green() => i2u8 2 + | Cyan() => i2u8 3 + | Red() => i2u8 4 + | Magenta() => i2u8 5 + | Brown() => i2u8 6 + | LightGray() => i2u8 7 + | DarkGray() => i2u8 8 + | LightBlue() => i2u8 9 + | LightGreen() => i2u8 10 + | LightCyan() => i2u8 11 + | LightRed() => i2u8 12 + | Pink() => i2u8 13 + | Yellow() => i2u8 14 + | White() => i2u8 15 + +fun code_value(foreground: color, background:color): uint8 = + (color_value(background) << 4) lor color_value(foreground) + +local +var _val: writer + +in +implement getref () = let + extern praxi __assert{l:addr} (ptr: ptr (l)): vtakeout0 (writer@l) + prval (pf, fpf) = __assert (addr@(_val)) +in + (pf, fpf | addr@(_val)) +end +end + +fun put_char (c : char, writer: &writer) : void = let + val buf = get_buffer() + val pos = writer.position +in + if (c = '\n') then + let + val new_pos = (pos / BUFFER_WIDTH + 1) * BUFFER_WIDTH + in + if (new_pos < N) then + writer.position := new_pos + else + clear_screen() + end + else ( + buf.1->[writer.position] := @{ ascii_character = c, color_code = writer.color_code}; + + if (pos < N - 1) then + writer.position := succ(pos) + else + clear_screen()); + + let prval() = eat_buffer buf in () end +end + + +implement put_string (str : string) : void = let + val (pf, fpf | p_val) = getref() + implement string_foreach$fwork<writer> (c,env) = put_char(c,env) + val _ = string_foreach_env<writer> (g1ofg0(str),!p_val) + prval() = fpf(pf) +in +end + +implement clear_screen() : void = let + val (pf, fpf | p_val) = getref() + fun loop {n : nat | n < N - 1} .<N-n>. (i : int n, wr : &writer) : void = + (put_char('\0', wr); if (i < N - 2) then loop(i+1,wr)) + val () = !p_val := @{position = 0, color_code = code_value(White,Black)} +in + loop(0,!p_val); + !p_val.position := 0; + let prval() = fpf(pf) in () end +end diff --git a/lib/SATS/writer.sats b/lib/SATS/writer.sats new file mode 100644 index 0000000..65a2ea9 --- /dev/null +++ b/lib/SATS/writer.sats @@ -0,0 +1,32 @@ +#define BUFFER_HEIGHT 23 +#define BUFFER_WIDTH 80 +#define N BUFFER_HEIGHT * BUFFER_WIDTH + +datatype color = + | Black + | Blue + | Green + | Cyan + | Red + | Magenta + | Brown + | LightGray + | DarkGray + | LightBlue + | LightGreen + | LightCyan + | LightRed + | Pink + | Yellow + | White + + +typedef screenChar = @{ ascii_character = char, color_code = uint8} + +vtypedef buffer = [l : agz] (@[screenChar][N] @ l | ptr l) +typedef writer = @{position = [a:int | a >= 0 && a < N] int (a), color_code = uint8} + +castfn i2u8 {n: nat} (i: int n): uint8 n + +fun put_string (str : string) : void +fun clear_screen() : void |