Memory management in Forth

Question

So I\'m just learning Forth and was curious if anyone could help me understand how memory management generally works. At the moment I only have (some) experience with the C stac

Answer 1

Some Forth implementations support local variables on the return stack frame and allocating memory blocks. For example in SP-Forth:

lib/ext/locals.f
lib/ext/uppercase.f

100 CONSTANT /buf

: test ( c-addr u -- ) { \ len [ /buf 1 CHARS + ] buf }
  buf SWAP /buf UMIN DUP TO len CMOVE
  buf len UPPERCASE
  0 buf len + C! \ just for illustration
  buf len TYPE
;

S" abc" test \ --> "ABC"