Naive t2b (https://github.com/thosakwe/t2b) implementation proof of concept

t2b.rb

#!/usr/bin/env ruby

#
# DSL implementation
#

$stack = [""]

def emit x
    $stack.last << x
end

def u8 x
    emit [x].pack "c"
end

def u32 x
    emit [x].pack "l"
end

def i64 x
    emit [x].pack "Q"
end

def str x
    emit x
end

def strl x
    str x
    endl
end

def endl
    emit "\n"
end

def capture
    $stack.push ""
    yield
    $stack.pop
end


#
# Example from readme
#

u8 10
u8 0x10
i64 25677
str "hello"
strl "hello world!"
str "hello, world!\n"
str "\u{1234}"
endl

5.times do
    u8 23
    u32 24
    10.times do
        # We can nest loops
        str "50 times!!!"
    end
end

foo = capture { u8 33 }
bar = foo

3.times { emit foo }

def emit_twice x
    2.times { emit x }
end

emit_twice 24


#
# Final output
#

print $stack.pop