tools/PascalUnitSyntaxTree.hs
author Mitchell Kember <mk12360@gmail.com>
Fri, 30 Nov 2012 20:00:53 -0500
changeset 8149 237802cf4610
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permissions -rw-r--r--
Google Code-in: Center help text field Modifies the grid layout slightly so that the help text which appears when hovering over certain elements is centered with respect to the window, even when there are more buttons on one side. https://google-melange.appspot.com/gci/task/view/google/gci2012/7968226
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module PascalUnitSyntaxTree where
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import Data.Maybe
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import Data.Char
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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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    | Redo [TypeVarDeclaration]
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data Interface = Interface Uses TypesAndVars
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data Implementation = Implementation Uses TypesAndVars
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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 Bool ([Identifier], TypeDecl) (Maybe InitExpression)
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    | FunctionDeclaration Identifier Bool TypeDecl [TypeVarDeclaration] (Maybe (TypesAndVars, Phrase))
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    | OperatorDeclaration String Identifier Bool TypeDecl [TypeVarDeclaration] (Maybe (TypesAndVars, Phrase))
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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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    | DeriveType InitExpression
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    | VoidType
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    | VarParamType TypeDecl -- this is a hack
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data Range = Range Identifier
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           | RangeFromTo InitExpression InitExpression
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           | RangeInfinite
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data Initialize = Initialize String
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data Finalize = Finalize String
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data Uses = Uses [Identifier]
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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 Bool -- The last Boolean indicates wether it's up or down counting
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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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        | BuiltInFunctionCall [Expression] Reference
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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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    | PCharLiteral 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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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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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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    | BTBool
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    | BTFloat
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    | BTRecord String [(String, BaseType)]
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    | BTArray Range BaseType BaseType
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    | BTFunction Bool Int BaseType
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    | BTPointerTo BaseType
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    | BTUnresolved String
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    | BTSet BaseType
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    | BTEnum [String]
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    | BTVoid
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    | BTUnit
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    | BTVarParam BaseType
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