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# All single reserved characters
{}uint8 MULTI_PARENS = "/;:#"
{}uint8 PARENS = "()[]{}"
{}uint8 SEPS = "\n;:,"
{}uint8 RESERVED = "`~!%^&*()-+=[]{}|;:/?<>.,"
{}uint8 AUGMENTS = "=~!<>&|^+-*/%`."
{}uint8 WHITESPACE = " \r\n\t"
# All lists of keywords are comma delim because the compiler does not yet support arrays of strings
{}uint8 CSV_AUGMENTS = "++,--,==,!==,&&,||,^^,<==,>==,!>,!<,~=,`=,%=,^=,&=,*=,!=,|=,/=,<<,>>,!&,!|,!^,len,is"
{}uint8 CSV_KEYWORDS = "if,else,loop,continue,break,return,method,struct,enum,interface,export,module,const,static,volatile,raw,extends,override,asm"
{}uint8 CSV_KEYTYPES = "uint8,uint16,uint32,uint64,uint,int8,int16,int32,int64,int,float32,float64,float,comp32,comp64,comp,vect,bool,type,void"
# Types of tokens
enum TOKEN_TYPE [uint] {
SEPARATOR = 0,
DELIMITER = 1,
AUGMENT = 2,
KEYTYPE = 3,
KEYWORD = 4,
LITERAL = 5,
DEFWORD = 6
}
# Token structure represents a single token in the program
struct Token {
uint
_type,
line,
column,
~uint8
data
}
# Shortcut methods on the token struct
/; method Token
# Initialize the data buffer
/; start
self.data = _alloc(1)
self.data{0} = 0
;/
# Append a character to the end of the token
/; append (uint8 ch)
int ln = cstr_len(self.data)
self.data = _realloc(self.data, ln + 2)
self.data{ln} = ch
self.data{ln + 1} = 0
;/
# Remove the last character from this token
/; pop
int ln = cstr_len(self.data)
self.data = _realloc(self.data, ln)
self.data{ln - 1} = 0
;/
# Copy another token to this token
/; copy (Token other)
self._type = other._type
self.line = other.line
self.column = other.column
self.data = _alloc(cstr_len(other.data) + 1)
cstr_copy(other.data, self.data)
;/
# Delete the memory associated with this token
/; _del
_delete(self.data)
;/
# length of the string that this token encodes
/; _len [int]
return cstr_len(self.data)
;/
;/
{}uint8 tkn_ok = "OK \0", tkn_no = "NO \0", tkn_nl = "\n\0"
/; print_token (Token tok, ~void file_out)
/; if (in_csv(~CSV_KEYWORDS, tok.data) == true)
write_to_file(file_out, ~tkn_ok{0})
;; else
write_to_file(file_out, ~tkn_no{0})
;/
write_to_file(file_out, tok.data)
write_to_file(file_out, ~tkn_nl{0})
;/
# Returns true if the character is whitespace
/; is_whitespace(uint8 c) [bool]
return contains_char(~WHITESPACE, c)
;/
# Returns true if the character is reserved
/; is_reserved (uint8 c) [bool]
return contains_char(~RESERVED, c)
;/
# Returns true if the token is a valid reserved token
/; tok_reserved (Token tok) [bool]
log_one_nl('i')
/; if (tok._len() == 1)
return is_reserved(tok.data{0})
;; else if (tok._len() == 2)
bool a = contains_char(~MULTI_PARENS, tok.data{0})
bool b = contains_char(~MULTI_PARENS, tok.data{1})
return a && b
;/
return in_csv(~CSV_AUGMENTS, tok.data)
;/
# Returns true if the token is a valid literal value
/; tok_literal (Token tok) [bool]
# TODO: implement literals
return false
;/
/; get_tok_type(Token tok) [uint]
log_one_nl('h')
/; if (tok_reserved(tok) == true)
/; if (tok._len() > 1)
bool a = contains_char(~MULTI_PARENS, tok.data{0})
bool b = contains_char(~MULTI_PARENS, tok.data{1})
/; if (a && b)
return TOKEN_TYPE.DELIMITER
;/
return TOKEN_TYPE.AUGMENT
;; else if (contains_char(~PARENS, tok.data{0}))
return TOKEN_TYPE.DELIMITER
;; else if (contains_char(~SEPS, tok.data{0}))
return TOKEN_TYPE.SEPARATOR
;; else if (contains_char(~AUGMENTS, tok.data{0}))
return TOKEN_TYPE.AUGMENT
;/
;; else if (tok_literal(tok) == true)
return TOKEN_TYPE.LITERAL
;/
return TOKEN_TYPE.DEFWORD
;/
/; break_token(Token tok, uint8 c) [bool]
log_one('g')
log_one(' ')
log_one_nl(c)
# return true
uint type_before = get_tok_type(tok)
tok.append(c)
uint type_after = get_tok_type(tok)
tok.pop()
log_one_nl('g')
bool a = type_before !== TOKEN_TYPE.DEFWORD && type_after == TOKEN_TYPE.DEFWORD
bool b = type_after !== TOKEN_TYPE.LITERAL && is_whitespace(c) == true
return a || b
;/
/; tokenize_file (~void file_in, file_out)
Token tmp
tmp.start()
uint8 buf = 0
int read_count = 0
# Start reading at beginning of file
_read_byte(file_in, ~buf, ~read_count)
# Read loop.
/; loop (_read_byte(file_in, ~buf, ~read_count))
/; if (read_count == 0)
break
;/
log_one_nl('b')
# /; if (break_token(tmp, buf) == true)
# log_one_nl('c')
# /; if (tmp._len() > 0)
# log_one_nl('d')
# print_token(tmp, file_out)
# ;/
#
# tmp._del()
# tmp.start()
#
# /; if (is_whitespace(buf) == false)
# log_one_nl('e')
# tmp.append(buf)
# ;; else if (buf == WHITESPACE{2})
# log_one_nl('f')
# tmp.append(WHITESPACE{2})
# print_token(tmp, file_out)
# tmp._del()
# tmp.start()
# ;/
# log_one_nl('c')
# ;; else
tmp.append(buf)
# ;/
log_one_nl('b')
read_count = 0
;/
/; if (tmp._len() > 0)
print_token(tmp, file_out)
;/
tmp._del()
;/
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