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|
{-|
Module : VeriFuzz.Lexer
Description : Lexer for Verilog.
Copyright : (c) 2019, Yann Herklotz Grave
License : GPL-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Lexer for Verilog.
-}
module VeriFuzz.Lexer
( lexer
, identifier
, reserved
, operator
, reservedOp
, charLiteral
, stringLiteral
, natural
, integer
, float
, naturalOrFloat
, decimal
, hexadecimal
, octal
, symbol
, lexeme
, whiteSpace
, parens
, braces
, angles
, brackets
, squares
, comma
, colon
, dot
, semiSep
, semiSep1
, commaSep
, commaSep1
)
where
import Data.Char (digitToInt)
import Text.Parsec
import qualified Text.Parsec.Token as P
type VerilogDef = P.LanguageDef ()
type Lexer = P.TokenParser ()
type Parser = Parsec String ()
verilogDef :: VerilogDef
verilogDef = P.LanguageDef "/*"
"*/"
"//"
False
letter
(alphaNum <|> char '_')
(oneOf ":!#%&*+./<=>?@\\^|-~")
(oneOf ":!#%&*+./<=>?@\\^|-~")
reserved'
reservedOp'
True
lexer :: Lexer
lexer = P.makeTokenParser verilogDef
identifier :: Parser String
identifier = P.identifier lexer
reserved :: String -> Parser ()
reserved = P.reserved lexer
operator :: Parser String
operator = P.operator lexer
reservedOp :: String -> Parser ()
reservedOp = P.reservedOp lexer
charLiteral :: Parser Char
charLiteral = P.charLiteral lexer
stringLiteral :: Parser String
stringLiteral = P.stringLiteral lexer
natural :: Parser Integer
natural = P.natural lexer
integer :: Parser Integer
integer = P.integer lexer
float :: Parser Double
float = P.float lexer
naturalOrFloat :: Parser (Either Integer Double)
naturalOrFloat = P.naturalOrFloat lexer
decimal :: Parser Integer
decimal = P.decimal lexer
number :: Integer -> Parser Char -> Parser Integer
number base baseDigit = do
digits <- many1 baseDigit
let n = foldl (\x d -> base * x + toInteger (digitToInt d)) 0 digits
seq n (return n)
hexadecimal :: Parser Integer
hexadecimal = number 16 hexDigit
octal :: Parser Integer
octal = number 8 octDigit
symbol :: String -> Parser String
symbol = P.symbol lexer
lexeme :: Parser a -> Parser a
lexeme = P.lexeme lexer
whiteSpace :: Parser ()
whiteSpace = P.whiteSpace lexer
parens :: Parser a -> Parser a
parens = P.parens lexer
braces :: Parser a -> Parser a
braces = P.braces lexer
angles :: Parser a -> Parser a
angles = P.angles lexer
brackets :: Parser a -> Parser a
brackets = P.brackets lexer
squares :: Parser a -> Parser a
squares = P.squares lexer
comma :: Parser String
comma = P.comma lexer
colon :: Parser String
colon = P.colon lexer
dot :: Parser String
dot = P.dot lexer
semiSep :: Parser a -> Parser [a]
semiSep = P.semiSep lexer
semiSep1 :: Parser a -> Parser [a]
semiSep1 = P.semiSep1 lexer
commaSep :: Parser a -> Parser [a]
commaSep = P.commaSep lexer
commaSep1 :: Parser a -> Parser [a]
commaSep1 = P.commaSep1 lexer
reservedOp' :: [String]
reservedOp' =
[ "!"
, "~"
, "~&"
, "~|"
, "+"
, "-"
, "*"
, "/"
, "%"
, "=="
, "!="
, "==="
, "!=="
, "&&"
, "||"
, "<"
, "<="
, ">"
, ">="
, "&"
, "|"
, "^"
, "^~"
, "~^"
, "**"
, "<<"
, ">>"
, "<<<"
, ">>>"
]
reserved' :: [String]
reserved' =
[ "always"
, "and"
, "assign"
, "automatic"
, "begin"
, "buf"
, "bufif0"
, "bufif1"
, "case"
, "casex"
, "casez"
, "cell"
, "cmos"
, "config"
, "deassign"
, "default"
, "defparam"
, "design"
, "disable"
, "edge"
, "else"
, "end"
, "endcase"
, "endconfig"
, "endfunction"
, "endgenerate"
, "endmodule"
, "endprimitive"
, "endspecify"
, "endtable"
, "endtask"
, "event"
, "for"
, "force"
, "forever"
, "fork"
, "function"
, "generate"
, "genvar"
, "highz0"
, "highz1"
, "if"
, "ifnone"
, "incdir"
, "include"
, "initial"
, "inout"
, "input"
, "instance"
, "integer"
, "join"
, "large"
, "liblist"
, "library"
, "localparam"
, "macromodule"
, "medium"
, "module"
, "nand"
, "negedge"
, "nmos"
, "nor"
, "noshowcancelled"
, "not"
, "notif0"
, "notif1"
, "or"
, "output"
, "parameter"
, "pmos"
, "posedge"
, "primitive"
, "pull0"
, "pull1"
, "pulldown"
, "pullup"
, "pulsestyle_onevent"
, "pulsestyle_ondetect"
, "remos"
, "real"
, "realtime"
, "reg"
, "release"
, "repeat"
, "rnmos"
, "rpmos"
, "rtran"
, "rtranif0"
, "rtranif1"
, "scalared"
, "showcancelled"
, "signed"
, "small"
, "specify"
, "specparam"
, "strong0"
, "strong1"
, "supply0"
, "supply1"
, "table"
, "task"
, "time"
, "tran"
, "tranif0"
, "tranif1"
, "tri"
, "tri0"
, "tri1"
, "triand"
, "trior"
, "trireg"
, "unsigned"
, "use"
, "vectored"
, "wait"
, "wand"
, "weak0"
, "weak1"
, "while"
, "wire"
, "wor"
, "xnor"
, "xor"
]
|
