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jdbasic.p8
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jdbasic.p8
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%import syslib
%import textio
%import diskio
%import string
%import conv
%import jdcmds
%import jdcx16
%import jdlang
%import jddos
%import jdvars
%import jdstacks
%import jderr
%encoding iso
%zeropage floatsafe
%zpreserved $41, $5B
%option no_sysinit
main {
const uword mend = $9EFF
str buffer = "\x00" * 64
str lineinput = "?"*160
str filename = "\x00" * 40
uword prgptr = 0
uword @requirezp pcode = 0
uword pend = 0
uword linenr = 0
uword fstack = 0
uword fstack1 = 0
ubyte graphmode = 0 ;0=text, 1=320x200
ubyte fgcolor = 5
ubyte bgcolor = 0
ubyte trace = 0
ubyte fake = 0
sub start() {
;cx16.rombank(0)
ubyte e = 0
init_screen()
init_system()
init_basic()
repeat {
error.clear()
sys.memset(&lineinput,160,0)
;sys.memset(pend,160,0)
void txt.input_chars(lineinput)
txt.nl()
string.strip(lineinput)
e = tokenize(&lineinput, pend)
if error.get() > 0 {
error.print()
} else {
if e == 0 runl()
}
}
}
sub init_basic() {
txt.print("Ready")
txt.nl()
fake = 0
}
sub init_system() {
uword mem = 0
pend = sys.progend ()
txt.print("Basic end: ")
txt.print_uwhex(pend,true)
txt.nl()
txt.print("Prog start: ")
txt.print_uwhex(pend+160,true)
txt.nl()
pcode = pend
mem = (mend as word - pend as word) as uword
txt.print("Free memory: ")
txt.print_uw(mem)
txt.nl()
trace = 0
}
sub init_screen() {
txt.color2(5, 0)
;cx16.VERA_DC_BORDER = 0
txt.iso()
txt.clear_screen()
txt.print("NeReLa Basic v 0.6")
txt.nl()
txt.print("(c) 2024")
txt.nl()
fake=1 ;txt.CMD should never be last command in function, it will be compiled as jmp, not jsr!
}
sub parse() -> ubyte {
uword lp = 0
ubyte p =0
bool flag
uword basic_cmd
uword prevptr
buffer = ""
repeat {
if @(prgptr) == 0 { return tokens.NOCMD }
if @(prgptr) == $0D or @(prgptr) == $0A { return tokens.C_CR }
if string.isspace(@(prgptr)) {
prgptr++
continue
}
;no unary '-' - until i fix that parse error
;if (string.isdigit(@(prgptr)) or (@(prgptr) == '-' and string.isdigit(@(prgptr+1)))) or
if (string.isdigit(@(prgptr)) ) or
( (@(prgptr) == '$' or @(prgptr) == '%') and ( string.isdigit(@(prgptr+1)) or @(prgptr+1)=='A' or @(prgptr+1)=='B'or @(prgptr+1)=='C'or @(prgptr+1)=='D'or @(prgptr+1)=='E'or @(prgptr+1)=='F' )) {
lp=&buffer
do {
@(lp) = @(prgptr)
lp++
prgptr++
} until (string.contains(consts.DELIMITERCHAR, @(prgptr)) or @(prgptr) == $0D or @(prgptr) == $0A or @(prgptr) == $00)
@(lp) = 0
return tokens.NUMBER
}
p = singlechar( @(prgptr))
if p == tokens.C_APOSTROPHE {
do {
prgptr++
} until (@(prgptr) == 0 or @(prgptr) == $0D or @(prgptr) == $0A)
continue
}
if p>0 {
prgptr++
return p
}
if @(prgptr) == '"' {
prgptr++
lp=&buffer
do {
@(lp) = @(prgptr)
lp++
prgptr++
} until (@(prgptr) == '"' or @(prgptr) == 0 or @(prgptr) == $0D or @(prgptr) == $0A)
if @(prgptr) == '"' {
@(lp) = 0
prgptr++
return tokens.STRING
} else {
error.set(1)
return tokens.NOCMD
}
}
if string.isletter(@(prgptr)) {
prgptr++
if @(prgptr) == '!' { ;FAST vars are !
prgptr++
flag = string.contains(consts.DELIMITERCHAR, @(prgptr))
if @(prgptr) == 0 or @(prgptr) == $0a flag = true
prgptr--
;prgptr--
if flag {
buffer=""
return tokens.FAST
}
}
prgptr--
}
if string.isletter(@(prgptr)) {
prevptr = prgptr
lp=&buffer
do {
@(lp) = @(prgptr)
lp++
prgptr++
} until (string.isletter(@(prgptr))==false)
@(lp) = 0
basic_cmd = statements.get(buffer)
if basic_cmd > 0 {
buffer = ""
return basic_cmd as ubyte
}
prgptr = prevptr
}
if string.isletter(@(prgptr)) {
lp=&buffer
do {
@(lp) = @(prgptr)
lp++
prgptr++
} until ( (string.isletter(@(prgptr)) or string.isdigit(@(prgptr)) or @(prgptr)=='_') == false)
@(lp) = 0
if @(prgptr) == '$' {
return tokens.STRVAR
} else if @(prgptr) == '[' {
return tokens.ARRAY
} else if @(prgptr) == '(' {
return tokens.CALLFUNC
} else if @(prgptr) == '@' {
return tokens.P_CALLFUNC
} else if @(prgptr) == '#' {
return tokens.FLOAT
} else if @(prgptr) == '%' {
return tokens.INT
} else if @(prgptr) == '&' {
return tokens.LONG
} else if @(prgptr) == '!' {
return tokens.BYTE
} else if @(prgptr) == ':' {
return tokens.LABEL
} else {
return tokens.VARIANT
}
}
prgptr++
return 0
}
}
sub tokenize(uword rprgptr, uword pcodebase) -> ubyte{
uword t1 = 0
uword strb = 0
uword val = 0
ubyte index = 0
uword lp = 0
ubyte infuncheader = 0
ubyte paramcount = 0
ubyte p_funcno = 0
ubyte token = 0
pcode = pcodebase
prgptr = rprgptr
do {
token = parse()
if (token > 0) {
@(pcode) = token
pcode++;
strb = buffer
if @(strb) != 0 {
if token == tokens.STRING {
do {
@(pcode) = @(strb)
pcode++
strb++
} until @(strb) == 0
@(pcode) = 0
pcode++
} else if token == tokens.NUMBER {
;strb = conv.str2uword(buffer)
strb = conv.any2uword(buffer)
@(pcode) = lsb(cx16.r15)
pcode++
@(pcode) = msb(cx16.r15)
pcode++
} else if token == tokens.STRVAR {
@(pcode) = jdstrvars.insert(buffer, "")
prgptr++
pcode++
} else if token == tokens.ARRAY {
if infuncheader > 0 { ;we are in a function header, lets mark it local
paramcount++
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = jdlocal.insert(buffer, paramcount)
prgptr++
pcode++
} else {
if fstack > 0 { ; is there an local var?
index = jdlocal.get_name(buffer) as ubyte
if index > 0 {
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = index
prgptr++
pcode++
} else {
@(pcode) = jdarrvars.insert(buffer, "")
prgptr++
pcode++
}
} else {
@(pcode) = jdarrvars.insert(buffer, "")
prgptr++
pcode++
}
}
} else if token == tokens.VARIANT or token == tokens.INT {
if infuncheader > 0 { ;we are in a function header, lets mark it local
paramcount++
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = jdlocal.insert(buffer, paramcount)
pcode++
} else {
if fstack > 0 { ; is there an local var?
index = jdlocal.get_name(buffer) as ubyte
if index > 0 {
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = index
pcode++
} else {
@(pcode) = jdvars.insert(buffer, 0)
pcode++
}
} else {
@(pcode) = jdvars.insert(buffer, 0)
pcode++
}
}
} else if token == tokens.CALLFUNC {
if infuncheader > 0 { ;we are in a function header, add local function
paramcount++
pcode--
@(pcode) = tokens.L_CALLFUNC
pcode++
;@(&buffer) = p_funcno
;@(&buffer+1) = paramcount
@(pcode) = jdlocal.insert(buffer, $FF)
pcode++
prgptr++
prgptr++ ;skip rightparen
} else if fstack > 0 { ;we have to change function call to local
index = jdfunc.get_FuncNoByName(buffer)
if index > 0 {
@(pcode) = index
pcode++
} else {
index = jdlocal.get_indexbyname(buffer) as ubyte
t1 = jdlocal.get_value(index)
if index > 0 {
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = index
pcode++
}
}
} else {
@(pcode) = jdfunc.get_FuncNoByName(buffer)
prgptr++
pcode++
}
} else if token == tokens.P_CALLFUNC {
@(pcode) = jdfunc.get_FuncNoByName(buffer)
prgptr++
pcode++
} else if token == tokens.LABEL {
index = labels.insert(buffer, 0)
@(pcode) = index
pcode++
labels.set_value(index,pcode)
prgptr++
}
} else {
if token == tokens.C_CR {
linenr++
@(pcode) = lsb(linenr)
pcode++
@(pcode) = msb(linenr)
pcode++
prgptr++
} else if token == tokens.FAST {
if infuncheader > 0 { ;we are in a function header, SYNTAX ERROR !!! NO FAST in locals!
paramcount++
pcode--
token = token + $80
@(pcode) = token
pcode++
lp=&buffer
if @(prgptr) > $60
@(lp) = @(prgptr) - $20
else
@(lp) = @(prgptr)
lp++
@(lp) = 0
pcode++
@(pcode) = jdlocal.insert(buffer, paramcount)
prgptr++
pcode++
} else if fstack > 0 { ; is there a local var?
lp=&buffer
if @(prgptr) > $60
@(lp) = @(prgptr) - $20
else
@(lp) = @(prgptr)
lp++
@(lp) = 0
index = jdlocal.get_name(buffer) as ubyte
if index > 0 {
pcode--
token = token + $80
@(pcode) = token
pcode++
@(pcode) = index
pcode++
} else {
if @(prgptr) > $60
@(pcode) = @(prgptr) - $20
else
@(pcode) = @(prgptr)
pcode++
}
prgptr++
} else {
if @(prgptr) > $60
@(pcode) = @(prgptr) - $20
else
@(pcode) = @(prgptr)
prgptr++
pcode++
}
} else if token == tokens.FUNC {
val = pcode
val-- ;flupp
token = parse()
if token == tokens.CALLFUNC {
infuncheader = 1
paramcount = 0
@(pcode) = jdfunc.insert(buffer, val)
p_funcno = @(pcode)
pcode++
@(pcode) = 0 ;2 byte for end func address
fstack = pcode ;put address to stack
pcode++
@(pcode) = 0
pcode++
@(pcode) = 0 ;2 byte for start func address
fstack1 = pcode ;put address to stack
pcode++
@(pcode) = 0
pcode++
prgptr++
}
} else if token == tokens.C_RIGHTPAREN {
if infuncheader > 0 {
infuncheader = 0
strb = fstack1
; txt.print(", add1: ")
; txt.print_uwhex(pcode,true)
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
fstack1 = 0
}
} else if token == tokens.RETURN {
if infuncheader > 0 {
infuncheader = 0
strb = fstack1
; txt.print(", ret: ")
; txt.print_uwhex(pcode,true)
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
fstack1 = 0
}
} else if token == tokens.IF {
ifstack.push(pcode, pcode+2, pcode+4)
@(pcode) = 0
pcode++
@(pcode) = 0
pcode++
@(pcode) = 0
pcode++
@(pcode) = 0
pcode++
@(pcode) = 0
pcode++
@(pcode) = 0
pcode++
} else if token == tokens.ELSE {
strb = ifstack.pops()
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
} else if token == tokens.THEN {
strb = ifstack.popm()
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
} else if token == tokens.ENDIF {
strb = ifstack.pope()
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
} else if token == tokens.ENDFUNC {
@(pcode) = tokens.ENDFUNC
pcode++
strb = fstack
; txt.print(", end: ")
; txt.print_uwhex(pcode,true)
; txt.nl()
@(strb) = lsb(pcode)
strb++
@(strb) = msb(pcode)
fstack = 0
} else if token == tokens.GOTO {
if string.isletter(@(prgptr))==false {
do {
prgptr++
} until string.isletter(@(prgptr))
}
if string.isletter(@(prgptr)) {
lp=&buffer
do {
@(lp) = @(prgptr)
lp++
prgptr++
} until (string.isletter(@(prgptr))==false)
@(lp) = 0
strb = labels.get_jmpaddress(buffer)
@(pcode) = lsb(strb)
pcode++
@(pcode) = msb(strb)
pcode++
}
}
}
} else {
;error.set(1)
break
}
} until token == tokens.NOCMD
return 0
}
sub get_string(str fname) {
uword fptr
fptr = fname
pcode++
do {
@(fptr) = @(pcode)
pcode++
fptr++
} until @(pcode)==0
@(fptr) = 0
}
sub next() -> ubyte {
ubyte token = 0
pcode++
token = @(pcode)
return token
}
; sub get_token() -> ubyte {
; ubyte token = 0
; token = @(pcode)
; return token
; }
sub tokenize_all() {
ubyte e
ubyte sbank
main.linenr = 0
sbank = cx16.getrambank()
cx16.rambank(2)
e = tokenize($A000, pend+160)
@(pcode) = tokens.NOCMD
@(pcode+1) = 0
cx16.rambank(sbank)
if ifstack.isc > 0 and ifstack.isc < 255 {
error.set(4)
error.print()
error.clear()
}
if fstack > 0 {
error.set(5)
error.print()
error.clear()
}
}
sub runl() {
ubyte token = 0
pcode = pend
repeat {
token = @(pcode)
if token == tokens.NOCMD break
statement(token)
if error.get() > 0 {
error.print()
break
}
token = @(pcode)
if token == tokens.NOCMD break
pcode++
}
}
sub runp() {
ubyte token = 0
uword ocode = 0
ocode = pcode
pcode = pend + 160
ifstack.clear()
funcstack.clear()
forstack.clear()
varstack.clear()
callstack_b.clear()
callstack_w.clear()
error.clear()
repeat {
token = @(pcode)
; txt.print_ubhex(token,true)
; txt.print(" , ")
if token == tokens.NOCMD or cbm.STOP2() break
statement(token)
pcode++
}
txt.print("Ready")
txt.nl()
pcode = ocode
}
sub statement(ubyte token) {
ubyte status = 0
uword line = 0
ubyte l,m
if trace == 1 {
txt.print("(")
txt.print_uwhex(token,true)
txt.print(")")
}
if token == tokens.CLS {
runcmd.do_cls()
} else if token == tokens.L_INT or token == tokens.L_VARIANT or token == tokens.VARIANT or token == tokens.INT {
runlang.do_let(0)
} else if token == tokens.L_FAST or token == tokens.FAST {
runlang.do_let(1)
} else if token == tokens.STRVAR {
runlang.do_let(2)
} else if token == tokens.ARRAY {
runlang.do_array(0)
} else if token == tokens.L_ARRAY {
runlang.do_array(1)
} else if token == tokens.FUNC {
runlang.do_func()
} else if token == tokens.CALLFUNC {
void runlang.do_callfunc(0)
} else if token == tokens.ENDFUNC {
runlang.do_endfunc()
} else if token == tokens.IF {
runlang.do_if()
} else if token == tokens.THEN {
runlang.do_then()
} else if token == tokens.C_CR {
pcode++
if trace == 1 {
l = @(main.pcode)
pcode++
m = @(main.pcode)
line = mkword(m,l)
txt.print("[")
txt.print_uwhex(line,true)
txt.print("]")
} else {
pcode++
}
} else if token == tokens.ELSE {
runlang.do_else()
} else if token == tokens.ENDIF {
runlang.do_endif()
} else if token == tokens.FOR {
runlang.do_for()
} else if token == tokens.NEXT {
runlang.do_next()
} else if token == tokens.PRINT {
runcmd.do_print()
pcode--
} else if token == tokens.LIST {
void rundos.do_list()
} else if token == tokens.GOTO {
runlang.do_goto()
} else if token == tokens.LABEL {
pcode++ ;scip label no
} else if token == tokens.POKE {
runcmd.do_poke()
} else if token == tokens.VPOKE {
runcmd.do_vpoke()
} else if token == tokens.FLUPP {
runcmd.do_flupp()
} else if token == tokens.SETCHR {
runcmd.do_setchr()
} else if token == tokens.SETCLR {
runcmd.do_setclr()
} else if token == tokens.COLOR {
runcmd.do_color()
} else if token == tokens.LOCATE {
runcmd.do_locate()
} else if token == tokens.GRAPH {
runcmd.do_graph()
} else if token == tokens.LINE {
runcmd.do_line()
} else if token == tokens.RECT {
runcmd.do_rect()
} else if token == tokens.CIRCLE {
runcmd.do_circle()
} else if token == tokens.WAIT {
runcmd.do_wait()
} else if token == tokens.TRON {
trace = 1
} else if token == tokens.TROFF {
trace = 0
} else if token == tokens.PLOT {
runcmd.do_plot()
} else if token == tokens.SPRINIT {
runcx16.do_sprinit()
} else if token == tokens.SPRPOS {
runcx16.do_sprpos()
} else if token == tokens.SPRFLIP {
runcx16.do_sprflip()
} else if token == tokens.SPRHIDE {
runcx16.do_sprhide()
} else if token == tokens.SPRDATA {
runcx16.do_sprdata()
} else if token == tokens.PSGSTART {
runcx16.do_psgstart()
} else if token == tokens.PSGVOICE {
runcx16.do_psgvoice()
} else if token == tokens.PSGSILENT {
runcx16.do_psgsilent()
} else if token == tokens.PSGFREQ {
runcx16.do_psgfreq()
} else if token == tokens.PSGENV {
runcx16.do_psgenv()
} else if token == tokens.PSGVOL {
runcx16.do_psgvol()
} else if token == tokens.PSGSTOP {
runcx16.do_psgstop()
} else if token == tokens.BVLOAD {
runcmd.do_bload(1)
} else if token == tokens.BLOAD {
runcmd.do_bload(0)
} else if token == tokens.LOAD {
status = rundos.do_load()
if status == 0 {
tokenize_all()
uword mem = (mend as word - pcode as word) as uword
txt.print("Free memory: ")
txt.print_uw(mem)
txt.nl()
}
} else if token == tokens.EDIT {
void rundos.do_edit()
} else if token == tokens.DIR {
void rundos.do_dir()
} else if token == tokens.RUN {
runcmd.do_run()
}
}
sub singlechar(ubyte ptr) -> ubyte
{
if(ptr == '\n') {
return tokens.C_CR;
} else if(ptr == ',') {
return tokens.C_COMMA;
} else if(ptr == ';') {
return tokens.C_SEMICOLON;
} else if(ptr == '+') {
return tokens.C_PLUS;
} else if(ptr == '-') {
return tokens.C_MINUS;
} else if(ptr == '|') {
return tokens.C_OR;
} else if(ptr == '*') {
return tokens.C_ASTR;
} else if(ptr == '/') {
return tokens.C_SLASH;
} else if(ptr == '%') {
return tokens.C_MOD;
} else if(ptr == '(') {
return tokens.C_LEFTPAREN;
} else if(ptr == '[') {
return tokens.C_LEFTBRACKET;
} else if(ptr == ']') {
return tokens.C_RIGHTBRACKET;
} else if(ptr == '#') {
return tokens.C_HASH;
} else if(ptr == ')') {
return tokens.C_RIGHTPAREN;
} else if(ptr == '<') {
return tokens.C_LT;
} else if(ptr == '>') {
return tokens.C_GT;
} else if(ptr == '=') {
return tokens.C_EQ;
} else if(ptr == '$') {
return tokens.C_DOLLAR;
} else if(ptr == '\'') {
return tokens.C_APOSTROPHE;
}
return 0;
}
}
consts {
str DELIMITERCHAR = " =,;#()]*/-+%&><'"
}
tokens {
const ubyte T_EOF = 0
const ubyte FUNC = $01
const ubyte ENDFUNC = $02
const ubyte LOCAL = $03
const ubyte FOR = $04
const ubyte BREAK = $05
const ubyte IF = $06
const ubyte THEN = $07
const ubyte ELSE = $08
const ubyte ENDIF = $09
const ubyte AND = $0A
const ubyte OR = $0B
const ubyte NOT = $0C
const ubyte MOD = $0D
const ubyte TRUE = $0E
const ubyte FALSE = $0F
const ubyte DO = $10
const ubyte WHILE = $11
const ubyte REPEAT = $12
const ubyte UNTIL = $13
const ubyte DIM = $14
const ubyte AS = $15
const ubyte LABEL = $16
const ubyte GOTO = $17
const ubyte PRINT = $18
const ubyte C_CR = $19; Single character C_*
const ubyte C_COMMA = $1A
const ubyte C_SEMICOLON = $1B
const ubyte C_PLUS = $1C
const ubyte C_MINUS = $1D
const ubyte C_OR = $1E
const ubyte C_ASTR = $1F
const ubyte C_SLASH = $20
const ubyte C_MOD = $21
const ubyte C_LEFTPAREN = $22
const ubyte C_LEFTBRACKET= $23
const ubyte C_RIGHTBRACKET= $24
const ubyte C_HASH = $25
const ubyte C_RIGHTPAREN= $26
const ubyte C_LT = $27
const ubyte C_GT = $28
const ubyte C_EQ = $29
const ubyte C_DOLLAR = $2A
const ubyte RETURN = $2B
const ubyte NUMBER = $2C
const ubyte STRING = $2D
const ubyte FAST = $2E
const ubyte BYTE = $2F
const ubyte INT = $30
const ubyte LONG = $31
const ubyte FLOAT = $32
const ubyte DOUBLE = $33
const ubyte ARRAY = $34
const ubyte STRVAR = $35
const ubyte C_APOSTROPHE = $36
const ubyte L_FAST = $AE
const ubyte L_BYTE = $AF
const ubyte L_INT = $B0
const ubyte L_LONG = $B1
const ubyte L_FLOAT = $B2
const ubyte L_DOUBLE = $B3
const ubyte L_ARRAY = $B4
const ubyte MODULE = $40
const ubyte GOFUNC = $41
const ubyte F_INC = $42
const ubyte TO = $43
const ubyte VARIANT = $44
const ubyte L_VARIANT = $C4
const ubyte NEXT = $45
const ubyte STEP = $46
const ubyte CALLFUNC = $47
const ubyte L_CALLFUNC = $C7
const ubyte P_CALLFUNC = $D7
const ubyte PEEK = $48
const ubyte POKE = $49
const ubyte VPEEK = $4A
const ubyte VPOKE = $4B
const ubyte FLUPP = $4C
const ubyte INPUT = $4D ;continue with $BA!
const ubyte GET = $BA
const ubyte LEN = $BB
const ubyte COLOR = $BC
const ubyte LOCATE = $BD
const ubyte SETCHR = $BE
const ubyte JIFFI = $BF
const ubyte LEFT = $C0
const ubyte RIGHT = $C1
const ubyte MID = $C2
const ubyte TRIM = $C3
const ubyte ASC = $C5
const ubyte RND = $C6
const ubyte JOY = $C8 ;c7 is L_CALLFUNC
const ubyte SETCLR = $C9
const ubyte CHR = $CA
const ubyte GRAPH = $CB
const ubyte LINE = $CC
const ubyte RECT = $CD
const ubyte CIRCLE = $CE
const ubyte PLOT = $CF
const ubyte GETXY = $D0
const ubyte WAIT = $D1
const ubyte BLOAD = $D2
const ubyte BVLOAD = $D3
const ubyte BSAVE = $D4
const ubyte SPRINIT = $D5
const ubyte SPRPOS = $D6
const ubyte SPRSPLIT = $D8 ;d7 is P_CALLFUNC
const ubyte SPRFLIP = $D9
const ubyte SPRHIDE = $DA
const ubyte SPRDATA = $DB
const ubyte PSGSTART = $DC
const ubyte PSGVOICE = $DD
const ubyte PSGSILENT = $DE
const ubyte PSGFREQ = $DF
const ubyte PSGENV = $E0
const ubyte PSGVOL = $E1
const ubyte PSGSTOP = $E2
const ubyte LIST = $70
const ubyte RUN = $71
const ubyte EDIT = $72
const ubyte DIR = $73
const ubyte LOAD = $74
const ubyte CLS = $75
const ubyte TRON = $76
const ubyte TROFF = $77
const ubyte WHITE = $7D
const ubyte TOKEN = $7E
const ubyte NOCMD = $7F
}
statements {
uword[] statements_table = [
"list", tokens.LIST,
"run", tokens.RUN,
"edit", tokens.EDIT,
"dir", tokens.DIR,
"load", tokens.LOAD,
"cls", tokens.CLS,
"func", tokens.FUNC,
"endfunc", tokens.ENDFUNC,
"for", tokens.FOR,
"if", tokens.IF,
"then", tokens.THEN,
"else", tokens.ELSE,
"endif", tokens.ENDIF,
"and", tokens.AND,
"or", tokens.OR,
"not", tokens.NOT,
"mod", tokens.MOD,
"true", tokens.TRUE,
"false", tokens.FALSE,
"goto", tokens.GOTO,
"print", tokens.PRINT,
"return", tokens.RETURN,
"to", tokens.TO,
"next", tokens.NEXT,
"step", tokens.STEP,
"peek", tokens.PEEK,
"poke", tokens.POKE,
"flupp", tokens.FLUPP,
"input", tokens.INPUT,
"get", tokens.GET,
"len", tokens.LEN,
"left", tokens.LEFT,
"right", tokens.RIGHT,
"mid", tokens.MID,
"trim", tokens.TRIM,
"chr", tokens.CHR,
"asc", tokens.ASC,
"rnd", tokens.RND,
"chr", tokens.CHR,
"wait", tokens.WAIT,
"tron", tokens.TRON,
"troff", tokens.TROFF
]
uword[] cx16_table = [
"vpeek", tokens.VPEEK,
"vpoke", tokens.VPOKE,
"color", tokens.COLOR,
"locate", tokens.LOCATE,
"setchr", tokens.SETCHR,
"setclr", tokens.SETCLR,