primitive string formatter with struct & array support

Cargo.lock

@@ -213,12 +213,12 @@ dependencies = [
 [[package]]
 name = "hbbytecode"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c0d957e70c7146f2c788a7b410632a940a18768f"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#945e5c70f6cb20a77fbb654a0ab6bef7d2b25aac"
 
 [[package]]
 name = "hblang"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c0d957e70c7146f2c788a7b410632a940a18768f"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#945e5c70f6cb20a77fbb654a0ab6bef7d2b25aac"
 dependencies = [
  "hashbrown",
  "hbbytecode",
@@ -229,7 +229,7 @@ dependencies = [
 [[package]]
 name = "hbvm"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c0d957e70c7146f2c788a7b410632a940a18768f"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#945e5c70f6cb20a77fbb654a0ab6bef7d2b25aac"
 dependencies = [
  "hbbytecode",
 ]

sysdata/libraries/stn/src/formatters.hb

@@ -0,0 +1,146 @@
+.{string, primitive, unsigned_int, signed_int, float, integer, memory, panic} := @use("stn")
+
+format_int := fn($T: type, v: T, str: ^u8): uint {
+	if integer(T) {
+		is_negative := signed_int(T) & v < 0
+		i := 0
+		if is_negative v = -v
+
+		if v == 0 {
+			*str = '0'
+			return 1
+		}
+
+		loop if v == 0 break else {
+			remainder := v % 10
+			v /= 10;
+			*(str + i) = @intcast(remainder + '0')
+			i += 1
+		}
+
+		if is_negative {
+			*(str + i) = '-'
+			i += 1
+		}
+
+		@inline(string.reverse, str)
+		return i
+	} else {
+		panic("Type is not an integer\0")
+	}
+}
+
+format_bool := fn(v: bool, str: ^u8): uint {
+	if v {
+		memory.copy(u8, "true\0", str, 4)
+		return 4
+	} else {
+		memory.copy(u8, "false\0", str, 5)
+		return 5
+	}
+}
+
+format_float := fn($T: type, v: T, str: ^u8, precision: uint): uint {
+	if float(T) {
+		is_negative := v < 0
+		i := 0
+
+		if is_negative v = -v
+
+		integer_part := @fti(v)
+		fractional_part := v - @itf(integer_part)
+
+		loop if integer_part == 0 & i > 0 break else {
+			remainder := integer_part % 10
+			integer_part /= 10;
+			*(str + i) = @intcast(remainder + '0')
+			i += 1
+		}
+
+		if is_negative {
+			*(str + i) = '-'
+			i += 1
+		}
+
+		@inline(string.reverse, str);
+		*(str + i) = '.'
+		i += 1
+
+		tolerance := @as(T, 0.000000001)
+		p := precision
+		loop if p <= 0 | fractional_part < tolerance break else {
+			fractional_part *= 10.0
+			digit := @fti(fractional_part);
+			*(str + i) = @intcast(digit + '0')
+			i += 1
+			fractional_part -= @itf(digit)
+			p -= 1
+		}
+
+		return i
+	} else {
+		panic("Type is not a floating point\0")
+	}
+}
+
+format_inner := fn($T: type, v: T, str: ^u8, opts: FormatOptions): uint {
+	if integer(T) {
+		return @inline(format_int, T, v, str)
+	} else if T == bool {
+		return @inline(format_bool, v, str)
+	} else if float(T) {
+		return @inline(format_float, T, v, str, opts.decimal_digits)
+	} else {
+		i := 0
+		// name := @nameof(T)
+		// len := string.length(name)
+		// memory.copy(u8, name, str, len)
+		len := 0
+		memory.copy(u8, ".(\0", str + len, 2)
+		len += 2
+		$loop if i == @len(T) break else {
+			v_sub := v[i]
+			TSub := @TypeOf(v_sub)
+			len += @inline(format_inner, TSub, v_sub, str + len, opts)
+			if i != @len(T) - 1 {
+				memory.copy(u8, ", \0", str + len, 2)
+				len += 2
+			} else {
+				memory.copy(u8, ")\0", str + len, 1)
+				len += 1
+			}
+			i += 1
+		}
+		return len
+	}
+	panic("Unsupported formatter type\0")
+}
+
+/* TODO:
+* Custom formatters using struct methods (T._fmt(self, str): uint),
+* Format struct names "Name.(x, y, z)"
+* Format struct fields "Name.{a: x, b: y, c: z}"
+* Optimise (so many instructions...)
+*	-> Consider switching `memory.copy` to loop for comptime stuff
+* Optionally tabulate
+* Add more FormatOption fields
+* Support radices for integers
+* Support scientific notation for floating point
+* Support format string (impossible right now)
+* Support nullables (impossible right now)
+* Support pointers
+*/
+
+FormatOptions := struct {
+	decimal_digits: uint,
+}
+
+$DEFAULT_OPTS := FormatOptions.(2)
+
+format := fn($T: type, v: T, str: ^u8): ^u8 return @inline(format_args, T, v, str, DEFAULT_OPTS)
+
+format_args := fn($T: type, v: T, str: ^u8, opts: FormatOptions): ^u8 {
+	@inline(string.clear, str)
+	_ = @inline(format_inner, T, v, str, opts)
+	return str
+}

sysdata/libraries/stn/src/lib.hb

@@ -1,5 +1,6 @@
 acs := @use("acs.hb")
 allocators := @use("alloc/lib.hb")
+formatters := @use("formatters.hb")
 hashers := @use("hash/lib.hb")
 string := @use("string.hb")
 log := @use("log.hb")

sysdata/libraries/stn/src/math.hb

@@ -77,7 +77,7 @@ TAN_TABLE := [f32].(0.0, 0.01227246237956628, 0.02454862210892544, 0.03683218099
 $TABLE_SIZE := @sizeof(@TypeOf(SIN_TABLE)) / @sizeof(f32)
 
 sin := fn(theta: f32): f32 {
-	si := @fti(theta * 0.5 * @itf(TABLE_SIZE) / PI)
+	si := @fti(theta * 0.5 * TABLE_SIZE / PI)
 	d := theta - @itf(si) * 2.0 * PI / TABLE_SIZE
 	ci := si + TABLE_SIZE / 4 & TABLE_SIZE - 1
 	si &= TABLE_SIZE - 1
@@ -85,7 +85,7 @@ sin := fn(theta: f32): f32 {
 }
 
 cos := fn(theta: f32): f32 {
-	ci := @fti(theta * 0.5 * @itf(TABLE_SIZE) / PI)
+	ci := @fti(theta * 0.5 * TABLE_SIZE / PI)
 	d := theta - @itf(ci) * 2.0 * PI / TABLE_SIZE
 	si := ci + TABLE_SIZE / 4 & TABLE_SIZE - 1
 	ci &= TABLE_SIZE - 1

sysdata/programs/render_example/src/examples/mandelbrot.hb

@@ -14,6 +14,12 @@ $X_MAX := -0.93
 $Y_MIN := 0.31
 $Y_MAX := 0.306
 
+// zoom into that weird curve part of the main cardioid
+// $X_MIN := 0.25
+// $X_MAX := 0.34
+// $Y_MIN := -0.075
+// $Y_MAX := 0.075
+
 $MAX_ITERATION := 300
 
 $USE_SUNSET := true

sysdata/programs/test/src/main.hb

@@ -3,5 +3,5 @@ serial_driver := @use("./tests/serial_driver.hb")
 
 main := fn(): uint {
 	// return serial_driver.test()
-	return stn.sleep.test()
+	return stn.formatters.test()
 }

sysdata/programs/test/src/tests/stn/formatters.hb

@@ -0,0 +1,25 @@
+.{formatters: .{format, format_args}, log, memory, math} := @use("stn");
+.{Color} := @use("lib:render")
+
+Thingy := struct {
+	a: uint,
+	b: int,
+	c: SubThingy,
+}
+
+SubThingy := struct {
+	a: f32,
+	b: bool,
+}
+
+test := fn(): uint {
+	buffer := memory.request_page(1)
+	log.info(format(Thingy, .(-100, -100, .(-math.PI, true)), buffer))
+	log.info(format(SubThingy, .(-math.E, false), buffer))
+	log.info(format(Color, .{r: 1, g: 2, b: 3, a: 4}, buffer))
+	// default value: .{decimal_digits: 2}
+	log.info(format_args(f64, math.LN_2, buffer, .{decimal_digits: 1 << 32}))
+	log.info(format([u8; 3], .(1, 2, 3), buffer))
+
+	return 0
+}

sysdata/programs/test/src/tests/stn/lib.hb

@@ -3,3 +3,4 @@ allocators := @use("./allocators.hb")
 sleep := @use("./sleep.hb")
 dt := @use("./dt.hb")
 process := @use("./process.hb")
+formatters := @use("./formatters.hb")

sysdata/system_config.toml

@@ -23,13 +23,14 @@ resolution = "1024x768x24"
 
 [boot.limine.ableos.modules]
 
-[boot.limine.ableos.modules.render_example]
-path = "boot:///render_example.hbf"
-[boot.limine.ableos.modules.sunset_server]
-path = "boot:///sunset_server.hbf"
+# [boot.limine.ableos.modules.render_example]
+# path = "boot:///render_example.hbf"
 
-[boot.limine.ableos.modules.ps2_mouse_driver]
-path = "boot:///ps2_mouse_driver.hbf"
+# [boot.limine.ableos.modules.sunset_server]
+# path = "boot:///sunset_server.hbf"
+
+# [boot.limine.ableos.modules.ps2_mouse_driver]
+# path = "boot:///ps2_mouse_driver.hbf"
 
 # [boot.limine.ableos.modules.ps2_keyboard_driver]
 # path = "boot:///ps2_keyboard_driver.hbf"
@@ -40,12 +41,14 @@ path = "boot:///ps2_mouse_driver.hbf"
 # [boot.limine.ableos.modules.sunset_client_2]
 # path = "boot:///sunset_client_2.hbf"
 
-[boot.limine.ableos.modules.ablefetch]
-path = "boot:///ablefetch.hbf"
+# [boot.limine.ableos.modules.ablefetch]
+# path = "boot:///ablefetch.hbf"
 
 # [boot.limine.ableos.modules.diskio_driver]
 # path = "boot:///diskio_driver.hbf"
 
+# [boot.limine.ableos.modules.angels_halo]
+# path = "boot:///angels_halo.hbf"
 
-#[boot.limine.ableos.modules.angels_halo]
-#path = "boot:///angels_halo.hbf"
+[boot.limine.ableos.modules.test]
+path = "boot:///test.hbf"