diff options
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | LICENSE | 329 | ||||
| -rw-r--r-- | SPL-compiler.cabal | 26 | ||||
| -rw-r--r-- | Setup.hs | 2 | ||||
| -rw-r--r-- | src/Main.hs | 14 | ||||
| -rw-r--r-- | src/SPL/Parse.hs | 138 | ||||
| -rw-r--r-- | src/SPL/Syntax.hs | 72 |
7 files changed, 584 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..196a265 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +dist/ +*.hi +*.o @@ -0,0 +1,329 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + SPL Compiler version 69, Copyright (C) 2018 C. Staps and E. van der Veen + SPL Compiler comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/SPL-compiler.cabal b/SPL-compiler.cabal new file mode 100644 index 0000000..8c8c586 --- /dev/null +++ b/SPL-compiler.cabal @@ -0,0 +1,26 @@ +name: SPL-compiler + +-- The package version. See the Haskell package versioning policy (PVP) +-- for standards guiding when and how versions should be incremented. +-- https://wiki.haskell.org/Package_versioning_policy +-- PVP summary: +-+------- breaking API changes +-- | | +----- non-breaking API additions +-- | | | +--- code changes with no API change +version: 0.1.0.0 +license: GPL-2 +license-file: LICENSE +author: Camil Staps and Erin van der Veen +maintainer: eveen@science.ru.nl +copyright: Copyright 2018 Camil Staps and Erin van der Veen +category: Language +build-type: Simple +extra-source-files: ChangeLog.md +cabal-version: >=1.10 + +executable SPL-compiler + main-is: Main.hs + other-extensions: LambdaCase + build-depends: base >=4.9 && <4.10, + MissingH >=1.4 && <1.5 + hs-source-dirs: src + default-language: Haskell2010 diff --git a/Setup.hs b/Setup.hs new file mode 100644 index 0000000..9a994af --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/src/Main.hs b/src/Main.hs new file mode 100644 index 0000000..354a09c --- /dev/null +++ b/src/Main.hs @@ -0,0 +1,14 @@ +-- vim: et ts=2 sw=2 ai: +module Main where + +import Prelude hiding(lex) + +import SPL.Syntax +import SPL.Parse + +main :: IO () +main = do + putStrLn $ show result + where + result :: Maybe [Token] + result = lex "+-123" diff --git a/src/SPL/Parse.hs b/src/SPL/Parse.hs new file mode 100644 index 0000000..2616d8c --- /dev/null +++ b/src/SPL/Parse.hs @@ -0,0 +1,138 @@ +-- vim: et ts=2 sw=2 ai: +{-# LANGUAGE LambdaCase #-} +module SPL.Parse +where + +import Prelude hiding(lex) + +import Control.Applicative +import Control.Monad +import Data.Char +import Data.List.Utils + +data Token + = TIdent String + | TInt Int + | TChar Char + | TBool Bool + + | TParenOpen + | TParenClose + | TBrackOpen + | TBrackClose + | TBraceOpen + | TBraceClose + | TDoubleColon + | TEquals + | TSemicolon + | TDot + + | TIf + | TWhile + | TReturn + | TVar + | TVoidType + | TCharType + | TBoolType + | TIntType + + | TPlus + | TMinus + | TAsterisk + | TSlash + | TPercent + | TEqEq + | TLt + | TGt + | TLtEq + | TGtEq + | TExclamEq + | TAmpAmp + | TPipePipe + | TColon + | TExclam + + | TSingleComment String + | TBlockComment String + deriving (Show) + +lex :: (Monad m, Alternative m) => String -> m [Token] +lex [] = pure [] +lex s = (item s <|> ident s <|> int s <|> char s <|> bool s <|> comment s) >>= + \(t,s') -> lex s' >>= \ts -> pure (t:ts) + where + ident :: (Alternative m) => String -> m (Token, String) + ident (c:s) + | isAlpha c = pure (TIdent (c:cs), s') + | otherwise = empty + where (cs,s') = span isIdentChar s + + int :: (Alternative m) => String -> m (Token, String) + int (c:s) + | isDigit c = pure (TInt $ read (c:cs), s') + | otherwise = empty + where (cs,s') = span isDigit s + + char :: (Alternative m) => String -> m (Token, String) + char ('\'':c:'\'':s) = pure (TChar c, s) + char _ = empty + + bool :: (Alternative m) => String -> m (Token, String) + bool ('F':'a':'l':'s':'e':s) = noIdentifier (TBool False) s + bool ('T':'r':'u':'e':s) = noIdentifier (TBool True) s + bool _ = empty + + comment :: (Alternative m) => String -> m (Token, String) + comment ('/':'/':s) = pure (TSingleComment cs, s') + where + (cs, s') = span (/= '\n') s + comment ('/':'*':s) = pure (TBlockComment cs, s') + where + (cs, s') = spanList (\case + ('*':'/':s) -> True + _ -> False) s + comment _ = empty + + item :: (Alternative m) => String -> m (Token, String) + item ('i':'f':s) = noIdentifier TIf s + item ('w':'h':'i':'l':'e':s) = noIdentifier TWhile s + item ('r':'e':'t':'u':'r':'n':s) = noIdentifier TReturn s + item ('v':'a':'r':s) = noIdentifier TVar s + item ('V':'o':'i':'d':s) = noIdentifier TVoidType s + item ('C':'h':'a':'r':s) = noIdentifier TCharType s + item ('B':'o':'o':'l':s) = noIdentifier TBoolType s + item ('I':'n':'t':s) = noIdentifier TIntType s + item ('=':'=':s) = pure (TEqEq, s) + item ('<':'=':s) = pure (TLtEq, s) + item ('>':'=':s) = pure (TGtEq, s) + item ('!':'=':s) = pure (TExclamEq, s) + item ('&':'&':s) = pure (TAmpAmp, s) + item ('|':'|':s) = pure (TPipePipe, s) + item ('(':s) = pure (TParenOpen, s) + item (')':s) = pure (TParenClose, s) + item ('[':s) = pure (TBrackOpen, s) + item (']':s) = pure (TBrackClose, s) + item ('{':s) = pure (TBraceOpen, s) + item ('}':s) = pure (TBraceClose, s) + item ('=':s) = pure (TEquals, s) + item (';':s) = pure (TSemicolon, s) + item ('.':s) = pure (TDot, s) + item ('+':s) = pure (TPlus, s) + item ('-':s) = pure (TMinus, s) + item ('*':s) = pure (TAsterisk, s) + item ('/':s) = pure (TSlash, s) + item ('%':s) = pure (TPercent, s) + item ('<':s) = pure (TLt, s) + item ('>':s) = pure (TGt, s) + item (':':s) = pure (TColon, s) + item ('!':s) = pure (TExclam, s) + item _ = empty + + noIdentifier :: (Alternative m) => Token -> String -> m (Token, String) + noIdentifier t [] = pure (t, []) + noIdentifier t s@(c:_) + | isIdentChar c = empty + | otherwise = pure (t, s) + + isIdentChar :: Char -> Bool + isIdentChar = liftM2 (||) isAlphaNum (== '_') diff --git a/src/SPL/Syntax.hs b/src/SPL/Syntax.hs new file mode 100644 index 0000000..4b0f670 --- /dev/null +++ b/src/SPL/Syntax.hs @@ -0,0 +1,72 @@ +-- vim: et ts=2 sw=2 ai: +module SPL.Syntax +where + +type Name = String + +data Program = Program + { funs :: [Function] + , vars :: [Variable] + } + +data Function = Function + { fname :: Name + , ftype :: Type + , fcode :: Statement + } + +data Variable = Variable + { vname :: Name + , vtype :: Type + } + +data Type + = Type -- TODO + +data Statement + = If Expression Statement (Maybe Statement) + | While Expression Statement + | Assign Name Expression + | Eval Expression + | Return (Maybe Expression) + | Seq Statement Statement + +data Expression + = Field Name Field + | Op2 Expression Op2 Expression + | Op1 Op1 Expression + | Literal Literal + | FunCall Name [Expression] + | Tuple Expression Expression + +data Field + = Hd + | Tl + | Fst + | Snd + +data Op2 + = Add + | Sub + | Mul + | Div + | Mod + | Eq + | Lt + | Gt + | Le + | Ge + | Ne + | And + | Or + | Cons + +data Op1 + = Not + | Neg + +data Literal + = LInt Int + | LChar Char + | LBool Bool + | LNil |