;;; This file contains words dealing with word lists (vocabularies)

	WORD p_wordlist,'WORDLIST',dovariable
	;; VARIABLE WORDLIST is the currently active wordlist.
	dq last_word

	WORD p_words,'WORDS',fasm
	;; ( -- )
	;; Dump all words
	pushr rsi
	push qword [p_wordlist_DFA]
p_words_LOOP:
	mov rax,qword [rsp]
	cmp rax,0
	je p_words_END
	;; tfa>pfa
	add rax,9
	;; pfa@ => ( chars* length)
	xor rbx,rbx
	mov bl,[rax]
	inc rax
	push 1
	push rax
	push rbx
	DOFORTH sys_write
	pop rax			; ignore errors
	push 10
	DOFORTH p_emit
	mov rax,qword [rsp]
	mov rax,qword [rax]
	mov qword [rsp],rax
	jmp p_words_LOOP

p_words_END:
	popr rsi
	next

	WORD p_strncmp,'STRNCMP',fasm
	;; ( chars1 chars2 n -- flag )
	;; Compare bytes until one is NUL, return <0, =0 or >0 to
	;; indicate that chars1 is lesser, they are equal, or chars2
	;; is lesser in ascii ordering respectively.
	pop rdx
	pop rbx
	pop rax
	xor rcx,rcx
	;; rax = chars1, rbx = chars2, cl = byte acc, rdx = length
	inc rdx
p_strncmp_loop:
	dec rdx
	je p_strncmp_end
	mov cl,[rax]
	inc rax
	sub cl,[rbx]
	inc rbx
	je p_strncmp_loop
p_strncmp_end:
	push rcx
	next

	WORD p_find,'FIND'
	;; ( chars length -- [ chars 0 | cfa 1 )
	;; Search the current wordlists for the given pname
	mov rcx,[p_wordlist_DFA]
p_find_loop:
	cmp rcx,0
	je p_find_done
	mov rbx,[rsp]
	mov rax,[rsp+8]
	cmp bl,byte [rcx+10]
	jne p_find_nextword
	push rcx
	;; check word
	push rax
	push rcx+11
	push rbx
	DOFORTH p_strncmp
	pop rax			; return value
	pop rcx
	cmp rax,0
	je p_find_done
p_find_nextword:
	mov rcx,[rcx]
	jmp p_find_loop
p_find_found:
	mov qword [rsp+8],rcx	; replace chars with tfa
	mov rcx,1
p_find_done:
	push rcx
	next