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|
uint TTYPE_DELIM = 0
uint TTYPE_SEP = 1
uint TTYPE_KEYWD = 2
uint TTYPE_KEYTP = 3
uint TTYPE_LITRL = 4
uint TTYPE_AUG = 5
uint TTYPE_USRWD = 6
uint TTYPE_ERR = 999
struct Token {
uint _type,
~uint8 data,
uint
line,
col
}
/; method Token
/; eq (~uint8 str) [bool]
return utils.strcmp(self.data, str)
;/
/; end
_delete(self.data)
;/
;/
/; _in_csv (~uint8 csv, ~uint8 str) [bool]
int along = 0
/; loop (csv` !== 0) [csv++]
/; if (csv` == ',')
/; if (along !< 0 && str{along} == 0)
return true
;/
along = 0
;; else if (along !< 0 && str{along} == csv`)
along++
;; else
along = 0
along--
;/
;/
return along !< 0 && str{along} == 0
;/
/; _str_contains (~uint8 str, uint8 ch) [bool]
/; loop (str` !== 0) [str++]
/; if (str` == ch)
return true
;/
;/
return false
;/
~uint8 KEYWORDS = "import,using,module,export,struct,method,implements,interface,operator,enum,if,else,loop,continue,break,return,label,goto,asm\0"
~uint8 KEYTYPES = "uint8,uint16,uint32,uint64,uint,int8,int16,int32,int64,int,float32,float64,float,bool,void,vect,type\0"
~uint8 LITERALS = "false,true,null\0"
~uint8 RESERVED = "~`!@#$%^&*()[]{}-+=\"\'\\|;:/?.>,<\0"
~uint8 OP = "`~!%^&|*-=+./><\0"
~uint8 MULTI_OP = "==,&&,||,^^,!==,!&&,!||,!^^,!<,!>,<<,>>,!&,!|,!^,++,--,>==,<==\0"
uint MAX_MULTI = 3
~uint8 MULTI_OP_W = "is,len\0"
~uint8 DELIMS = "()[]{}\0"
/; produce_word_token (~utils.File fin, Token prev) [Token]
Token out
out.line = prev.line
out.col = prev.col
utils.Vector tmp
tmp.init(1)
uint8 ch = fin`.read()
tmp.push(~ch)
/; loop (bool run = true) [run == true]
ch = fin`.read()
/; if (ch == 0)
run = false
;; else if (is_reserved(ch) == true || is_whitespace(ch) == true)
fin`.unread()
run = false
;; else
tmp.push(~ch)
;/
;/
~uint8 str = tmp.as_cstr()
/; if (_in_csv(KEYWORDS, str) == true)
out._type = TTYPE_KEYWD
;; else if (_in_csv(KEYTYPES, str) == true)
out._type == TTYPE_KEYTP
;; else if (_in_csv(LITERALS, str) == true)
out._type == TTYPE_LITRL
;; else if (_in_csv(MULTI_OP_W, str) == true)
out._type = TTYPE_AUG
;; else
out._type = TTYPE_USRWD
;/
return out
;/
/; produce_string_token (~utils.File fin, Token prev) [Token]
Token out
out._type = TTYPE_LITRL
out.line = prev.line
out.col = prev.col
utils.Vector store
store.init(1)
uint8 delim = fin`.read()
store.push(~delim)
/; loop (fin`.at_end == false && delim !== 0)
uint8 tmp = fin`.read()
store.push(~tmp)
/; if(tmp == '\\')
tmp = fin`.read()
store.push(~tmp)
;; else if (tmp == delim)
delim = 0
;; else if (tmp == '\n')
out.line++
;/
;/
out.data = store.as_cstr()
return out
;/
/; produce_reserved_token (~utils.File fin, Token prev) [Token]
Token out
utils.Vector tmp
tmp.init(1)
out.line = prev.line
out.col = prev.col
/; loop (int i = 0; i < MAX_MULTI) [i++]
uint8 ch = fin`.read()
/; if (is_reserved(ch) == true)
tmp.push(~ch)
;; else
fin`.unread()
i = MAX_MULTI
;/
;/
/; loop (bool run = true) [run == true]
/; if (tmp.count < 2)
run = false
~uint8 ch = tmp.get(0)
/; if (ch` == ';' || ch` == ',')
out._type = TTYPE_SEP
;; else if (_str_contains(DELIMS, ch`) == true)
out._type = TTYPE_DELIM
;; else if (_str_contains(OP, ch`) == true)
out._type = TTYPE_AUG
;/
;; else if (_in_csv(MULTI_OP, tmp.as_cstr()) == true)
run = false
out._type = TTYPE_AUG
;; else if (tmp.count == 2)
~uint8 cha = tmp.get(0)
~uint8 chb = tmp.get(0)
/; if (cha` == ';' && chb` == ';')
run = false
;; else if (cha` == '/' && chb` == ';')
run = false
;; else if (cha` == ';' && chb` == '/')
run = false
;/
/; if (run == false)
out._type = TTYPE_DELIM
;/
;; else
tmp.pop()
fin`.unread()
;/
;/
out.data = tmp.as_cstr()
return out
;/
/; produce_numeric_token (~utils.File fin, Token prev) [Token]
Token out
out._type = TTYPE_LITRL
out.line = prev.line
out.col = prev.col
utils.Vector tmp
tmp.init(1)
uint8 ch = fin`.read()
tmp.push(~ch)
bool alt_base = false
/; if (ch == '0')
ch = fin`.read()
/; if (ch !< 'a' && ch !> 'z')
alt_base = true
;; else if (ch !< 'A' && ch !> 'Z')
alt_base = true
;; else if (is_reserved(ch) == true)
fin`.unread()
out.data = tmp.as_cstr()
return out
;; else if (ch == 0)
out.data = tmp.as_cstr()
return out
;/
tmp.push(~ch)
;/
/; loop (bool run = true) [run == true]
ch = fin`.read()
/; if (is_numeric(ch) == false && alt_base == false)
fin`.unread()
run = false
;; else if (is_reserved(ch) == true)
fin`.unread()
run = false
;; else if (ch == 0 || fin`.at_end == true)
run = false
;; else
tmp.push(~ch)
;/
;/
out.data = tmp.as_cstr()
return out
;/
/; is_whitespace (uint8 ch) [bool]
/; if (ch > 8 && ch < 14)
return true
;; else if (ch == ' ')
return true
;/
return false
;/
/; is_reserved (uint8 ch) [bool]
return _str_contains(RESERVED, ch)
;/
/; is_numeric (uint8 ch) [bool]
/; if (ch !< '0' && ch !> '9')
return true
;/
return false
;/
/; produce_next_token (~utils.File fin, Token prev) [Token]
/; if (prev._type !== TTYPE_ERR)
prev.col = prev.col + utils.strlen(prev.data)
;/
uint8 first = fin`.read()
/; loop (is_whitespace(first) == true)
/; if (first == '\n')
prev.line++
prev.col = 0
;/
first = fin`.read()
prev.col++
;/
fin`.unread()
/; if (first == '\'' || first == '\"')
return produce_string_token(fin, prev)
;; else if (is_reserved(first) == true)
return produce_reserved_token(fin, prev)
;; else if (is_numeric(first) == true)
return produce_numeric_token(fin, prev)
;; else if (first !== 0)
return produce_word_token(fin, prev)
;/
Token out
out.line = prev.line
out.col = prev.col
out._type = TTYPE_ERR
return out
;/
/; produce_first_token (~utils.File fin) [Token]
Token tmp
tmp.line = 1
tmp.col = 1
tmp._type = TTYPE_ERR
return produce_next_token(fin, tmp)
;/
|
