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module PascalUnitSyntaxTree where
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--import Data.Traversable
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import Data.Maybe
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data PascalUnit =
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Program Identifier Implementation Phrase
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| Unit Identifier Interface Implementation (Maybe Initialize) (Maybe Finalize)
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| System [TypeVarDeclaration]
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deriving Show
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data Interface = Interface Uses TypesAndVars
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deriving Show
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data Implementation = Implementation Uses TypesAndVars
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deriving Show
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data Identifier = Identifier String BaseType
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data TypesAndVars = TypesAndVars [TypeVarDeclaration]
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data TypeVarDeclaration = TypeDeclaration Identifier TypeDecl
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| VarDeclaration Bool ([Identifier], TypeDecl) (Maybe InitExpression)
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| FunctionDeclaration Identifier TypeDecl [TypeVarDeclaration] (Maybe (TypesAndVars, Phrase))
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| OperatorDeclaration String Identifier TypeDecl [TypeVarDeclaration] (Maybe (TypesAndVars, Phrase))
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deriving Show
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data TypeDecl = SimpleType Identifier
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| RangeType Range
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| Sequence [Identifier]
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| ArrayDecl (Maybe Range) TypeDecl
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| RecordType [TypeVarDeclaration] (Maybe [[TypeVarDeclaration]])
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| PointerTo TypeDecl
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| String Integer
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| Set TypeDecl
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| FunctionType TypeDecl [TypeVarDeclaration]
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| UnknownType
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deriving Show
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data Range = Range Identifier
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| RangeFromTo InitExpression InitExpression
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deriving Show
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data Initialize = Initialize String
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deriving Show
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data Finalize = Finalize String
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deriving Show
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data Uses = Uses [Identifier]
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deriving Show
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data Phrase = ProcCall Reference [Expression]
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| IfThenElse Expression Phrase (Maybe Phrase)
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| WhileCycle Expression Phrase
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| RepeatCycle Expression [Phrase]
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| ForCycle Identifier Expression Expression Phrase
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| WithBlock Reference Phrase
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| Phrases [Phrase]
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| SwitchCase Expression [([InitExpression], Phrase)] (Maybe [Phrase])
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| Assignment Reference Expression
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| NOP
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data Expression = Expression String
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| BuiltInFunCall [Expression] Reference
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| PrefixOp String Expression
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| PostfixOp String Expression
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| BinOp String Expression Expression
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| StringLiteral String
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| CharCode String
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| HexCharCode String
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| NumberLiteral String
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| FloatLiteral String
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| HexNumber String
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| Reference Reference
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| SetExpression [Identifier]
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| Null
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deriving Show
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data Reference = ArrayElement [Expression] Reference
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| FunCall [Expression] Reference
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| TypeCast Identifier Expression
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| SimpleReference Identifier
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| Dereference Reference
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| RecordField Reference Reference
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| Address Reference
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| RefExpression Expression
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deriving Show
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data InitExpression = InitBinOp String InitExpression InitExpression
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| InitPrefixOp String InitExpression
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| InitReference Identifier
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| InitArray [InitExpression]
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| InitRecord [(Identifier, InitExpression)]
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| InitFloat String
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| InitNumber String
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| InitHexNumber String
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| InitString String
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| InitChar String
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| BuiltInFunction String [InitExpression]
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| InitSet [InitExpression]
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| InitAddress InitExpression
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| InitNull
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| InitRange Range
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| InitTypeCast Identifier InitExpression
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data BaseType = BTUnknown
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| BTChar
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| BTString
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| BTInt
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| BTRecord [(String, BaseType)]
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| BTArray BaseType BaseType
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| BTFunction
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| BTPointerTo BaseType
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| BTSet
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| BTEnum [String]
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| BTVoid
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deriving Show
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type2BaseType :: TypeDecl -> BaseType
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type2BaseType (SimpleType (Identifier s _)) = f s
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where
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f "longint" = BTInt
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f "integer" = BTInt
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f "word" = BTInt
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f "pointer" = BTPointerTo BTVoid
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f _ = BTUnknown
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type2BaseType (Sequence ids) = BTEnum $ map (\(Identifier i _) -> i) ids
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type2BaseType (RecordType tv mtvs) = BTRecord $ concatMap f (concat $ tv : fromMaybe [] mtvs)
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where
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f (VarDeclaration _ (ids, td) _) = map (\(Identifier i _) -> (i, type2BaseType td)) ids
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type2BaseType _ = BTUnknown
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