1 files changed, 72 insertions, 0 deletions
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