# Color.esh

# Functions in a namespace are never exported to other namespaces.
namespace Color

equal(a b)
{
	[ "x$[${a}->get_r]" = "x$[${b}->get_r]" ] && return 1
	[ "x$[${a}->get_g]" = "x$[${b}->get_g]" ] && return 1
	[ "x$[${a}->get_b]" = "x$[${b}->get_b]" ] && return 1
	return 0
}

new(class r g b)
{
	self=(r=${r} g=${g} b=${b})
	classify ${self} ${class}
	return ${self}
}

get_r(self)
{
	return ${self[r]}
}

set_r(self r)
{
	self[r]=${r}
}

get_g(self)
{
	return ${self[g]}
}

set_g(self g)
{
	self[g]=${g}
}

get_b(self)
{
	return ${self[b]}
}

set_b(self b)
{
	self[b]=${b}
}

print(self)
{
	printf '(%d, %d, %d)' ${self[r]} ${self[g]} ${self[b]}
}

RED=$[Color->new 255 0 0]
GREEN=$[Color->new 0 255 0]
BLUE=$[Color->new 0 0 255]

# main.esh

c=$[Color->new 255 0 0]
printf 'R: %d\n' "$[${c}->get_r]"
printf 'G: %d\n' "$[${c}->get_g]"
printf 'B: %d\n' "$[${c}->get_b]"
${c}->print
printf '\n'

${Color::RED}->print
printf '\n'

if Color::equal ${c} ${Color::RED}; then
	printf '%s is red\n' "$[${c}->print]"
fi