move hide behind @ and specify with :

testbed/lexer/main.bro

@@ -20,17 +20,17 @@ Token :: struct {
 	kind Kind
 }
 
-hide is_alpha func(value u8) bool {
+@hide is_alpha func(value u8) bool {
 	return value == '_' or
 	       value >= 'a' and value <= 'z' or
 	       value >= 'A' and value <= 'Z'
 }
 
-hide is_digit func(value u8) bool {
+@hide is_digit func(value u8) bool {
 	return value >= '0' and value <= '9'
 }
 
-hide word_kind func(word []u8) Kind {
+@hide word_kind func(word []u8) Kind {
 	# ponytail: enough keywords for the demo; add the full language set when a parser needs it.
 	if mem.eql(word, "func") or mem.eql(word, "void") {
 		return .keyword
@@ -38,7 +38,7 @@ hide word_kind func(word []u8) Kind {
 	return .identifier
 }
 
-hide append_token func(tokens @mut std.ArrayList(Token), kind Kind, start, end usize) void ! mem.AllocError {
+@hide append_token func(tokens @mut std.ArrayList(Token), kind Kind, start, end usize) void ! mem.AllocError {
 	try arraylist.append(tokens, Token {
 		start = start,
 		length = end - start,
@@ -95,7 +95,7 @@ lex func(source []u8, tokens @mut std.ArrayList(Token)) void ! mem.AllocError {
 	return
 }
 
-hide kind_name func(kind Kind) *c_char {
+@hide kind_name func(kind Kind) *c_char {
 	return match kind {
 		.invalid: "invalid"
 		.eof: "eof"
@@ -108,7 +108,7 @@ hide kind_name func(kind Kind) *c_char {
 	}
 }
 
-hide print_token func(source []u8, token Token) void {
+@hide print_token func(source []u8, token Token) void {
 	_ = c.printf("%-11s", kind_name(token.kind))
 	if token.length != 0 {
 		_ = c.printf(" `")

testbed/lexer/std/io/io.bro

@@ -74,7 +74,7 @@ write_all func(writer Writer, bytes []u8) void ! WriteError {
 	return
 }
 
-hide system_read func(_ ?*mut anyopaque, stream ReadStream, buffer []mut u8) usize ! ReadError {
+@hide system_read func(_ ?*mut anyopaque, stream ReadStream, buffer []mut u8) usize ! ReadError {
 	request usize := buffer.len
 	maximum usize :: usize(maxval!(c_long))
 	if request > maximum {
@@ -91,7 +91,7 @@ hide system_read func(_ ?*mut anyopaque, stream ReadStream, buffer []mut u8) usi
 	}
 }
 
-hide system_write func(_ ?*mut anyopaque, stream WriteStream, bytes []mut u8) usize ! WriteError {
+@hide system_write func(_ ?*mut anyopaque, stream WriteStream, bytes []u8) usize ! WriteError {
 	fd c_int :: c_int(stream)
 	request usize := bytes.len
 	maximum usize :: usize(maxval!(c_long))
@@ -109,12 +109,12 @@ hide system_write func(_ ?*mut anyopaque, stream WriteStream, bytes []mut u8) us
 	}
 }
 
-hide system_vtable IoVTable :: IoVTable {
+@hide system_vtable IoVTable :: IoVTable {
 	read = system_read,
 	write = system_write,
 }
 
-hide system func() Io {
+@hide system func() Io {
 	return Io {
 		context = null,
 		vtable = &system_vtable,

testbed/lexer/std/mem/mem.bro

@@ -41,9 +41,9 @@ eql func($T type, left, right []T) bool {
 	return true
 }
 
-hide empty_storage [1]mut u64 := [0]
+@hide empty_storage [1]mut u64 := [0]
 
-hide empty_slice func($T type, count usize) []mut T {
+@hide empty_slice func($T type, count usize) []mut T {
 	pointer *mut T :: ptrcast!(T, (&empty_storage).ptr)
 	return pointer[..count]
 }
@@ -116,9 +116,9 @@ free func($T type, allocator Allocator, memory []mut T) void {
 	}
 }
 
-hide malloc_alignment usize :: 16 # ponytail: aarch64-macos libc malloc alignment assumption.
+@hide malloc_alignment usize :: 16 # ponytail: aarch64-macos libc malloc alignment assumption.
 
-hide power_of_two func(value usize) bool {
+@hide power_of_two func(value usize) bool {
 	if value == 0 {
 		return false
 	}
@@ -135,7 +135,7 @@ hide power_of_two func(value usize) bool {
 	return true
 }
 
-hide c_alloc func(_ ?*mut anyopaque, size usize, alignment usize) ?*mut u8 {
+@hide c_alloc func(_ ?@mut anyopaque, size usize, alignment usize) ?*mut u8 {
 	if power_of_two(alignment) == false {
 		return null
 	}
@@ -153,7 +153,7 @@ hide c_alloc func(_ ?*mut anyopaque, size usize, alignment usize) ?*mut u8 {
 	return ptrcast!(u8, memory[0])
 }
 
-hide c_realloc func(_ ?*mut anyopaque, memory ?*mut u8, old_size usize, new_size usize, alignment usize) ?*mut u8 {
+@hide c_realloc func(_ ?@mut anyopaque, memory ?*mut u8, old_size usize, new_size usize, alignment usize) ?*mut u8 {
 	if power_of_two(alignment) == false {
 		return null
 	}
@@ -186,11 +186,11 @@ hide c_realloc func(_ ?*mut anyopaque, memory ?*mut u8, old_size usize, new_size
 	return c_alloc(null, new_size, alignment)
 }
 
-hide c_free func(_ ?*mut anyopaque, memory ?*mut u8, _ usize, _ usize) void {
+@hide c_free func(_ ?@mut anyopaque, memory ?*mut u8, _ usize, _ usize) void {
 	c.free(memory)
 }
 
-hide c_vtable AllocatorVTable :: AllocatorVTable {
+@hide c_vtable AllocatorVTable :: AllocatorVTable {
 	alloc = c_alloc,
 	realloc = c_realloc,
 	free = c_free,