Грамматика языка Delphi (270 строк)
Goal -> (Program | Package | Library | Unit)
Program -> [PROGRAM Ident ['(' IdentList ')'] ';']
ProgramBlock '.'
Unit -> UNIT Ident [PortabilityDirective] ';'
InterfaceSection
ImplementationSection
InitSection '.'
Package -> PACKAGE Ident ';'
[RequiresClause]
[ContainsClause]
END '.'
Library -> LIBRARY Ident ';'
ProgramBlock '.'
ProgramBlock -> [UsesClause]
Block
UsesClause -> USES IdentList ';'
PortabilityDirective -> platform
-> deprecated
-> library
InterfaceSection -> INTERFACE
[UsesClause]
[InterfaceDecl]...
InterfaceDecl -> ConstSection
-> TypeSection
-> VarSection
-> ExportedHeading
ExportedHeading -> ProcedureHeading ';' [Directive]
-> FunctionHeading ';' [Directive]
ImplementationSection -> IMPLEMENTATION
[UsesClause]
[DeclSection]...
[ExportsStmt]...
Block -> [DeclSection]
[ExportsStmt]...
CompoundStmt
[ExportsStmt]...
ExportsStmt -> EXPORTS ExportsItem [, ExportsItem]...
ExportsItem -> Ident [NAME|INDEX "'" ConstExpr "'"]
[INDEX|NAME "'" ConstExpr "'"]
DeclSection -> LabelDeclSection
-> ConstSection
-> TypeSection
-> VarSection
-> ProcedureDeclSection
LabelDeclSection -> LABEL LabelId
ConstSection -> CONST (ConstantDecl ';')...
ConstantDecl -> Ident '=' ConstExpr [PortabilityDirective]
-> Ident ':' TypeId '=' TypedConstant [PortabilityDirective]
TypeSection -> TYPE (TypeDecl ';')
TypeDecl -> Ident '=' [TYPE] Type [PortabilityDirective]
-> Ident '=' [TYPE] RestrictedType [PortabilityDirective]
TypedConstant -> (ConstExpr | ArrayConstant | RecordConstant)
ArrayConstant -> '(' TypedConstant ',' ')'
RecordConstant -> '(' RecordFieldConstant ';'... ')'
RecordFieldConstant -> Ident ':' TypedConstant
Type -> TypeId
-> SimpleType
-> StrucType
-> PointerType
-> StringType
-> ProcedureType
-> VariantType
-> ClassRefType
RestrictedType -> ObjectType
-> ClassType
-> InterfaceType
ClassRefType -> CLASS OF TypeId
SimpleType -> (OrdinalType | RealType)
RealType -> REAL48
-> REAL
-> SINGLE
-> DOUBLE
-> EXTENDED
-> CURRENCY
-> COMP
OrdinalType -> (SubrangeType | EnumeratedType | OrdIdent)
OrdIdent -> SHORTINT
-> SMALLINT
-> INTEGER
-> BYTE
-> LONGINT
-> INT64
-> WORD
-> BOOLEAN
-> CHAR
-> WIDECHAR
-> LONGWORD
-> PCHAR
VariantType -> VARIANT
-> OLEVARIANT
SubrangeType -> ConstExpr '..' ConstExpr
EnumeratedType -> '(' EnumeratedTypeElement ','... ')'
EnumeratedTypeElement -> Ident [ '=' ConstExpr ]
StringType -> STRING
-> ANSISTRING
-> WIDESTRING
-> STRING '[' ConstExpr ']'
StrucType -> [PACKED] (ArrayType | SetType | FileType | RecType [PACKED])
ArrayType -> ARRAY ['[' OrdinalType ','... ']'] OF Type [PortabilityDirective]
RecType -> RECORD [FieldList] END [PortabilityDirective]
FieldList -> FieldDecl ';'... [VariantSection] [';']
FieldDecl -> IdentList ':' Type [PortabilityDirective]
VariantSection -> CASE [Ident ':'] TypeId OF RecVariant ';'...
RecVariant -> ConstExpr ','... ':' '(' [FieldList] ')'
SetType -> SET OF OrdinalType [PortabilityDirective]
FileType -> FILE OF TypeId [PortabilityDirective]
PointerType -> '^' TypeId [PortabilityDirective]
ProcedureType -> (ProcedureHeading | FunctionHeading) [OF OBJECT]
VarSection -> VAR (VarDecl ';')...
VarDecl On Windows -> IdentList ':' Type [(ABSOLUTE (Ident | ConstExpr)) | '=' ConstExpr] [PortabilityDirective] On Linux -> IdentList ':' Type [ABSOLUTE (Ident) | '=' ConstExpr] [PortabilityDirective]
Expression -> SimpleExpression [RelOp SimpleExpression]...
SimpleExpression -> ['+' | '-'] Term [AddOp Term]...
Term -> Factor [MulOp Factor]...
Factor -> Designator ['(' ExprList ')']
-> '@' Designator
-> Number
-> String
-> NIL
-> '(' Expression ')'
-> NOT Factor
-> SetConstructor
-> TypeId '(' Expression ')'
RelOp -> '>'
-> '<'
-> '<='
-> '>='
-> '<>'
-> IN
-> IS
-> AS
AddOp -> '+'
-> '-'
-> OR
-> XOR
MulOp -> '*'
-> '/'
-> DIV
-> MOD
-> AND
-> SHL
-> SHR
Designator -> QualId ['.' Ident | '[' ExprList ']' | '^']...
SetConstructor -> '[' [SetElement ','...] ']'
SetElement -> Expression ['..' Expression]
ExprList -> Expression ','...
Statement -> [LabelId ':'] [SimpleStatement | StructStmt]
StmtList -> Statement ';'
SimpleStatement -> Designator ['(' [ExprList] ')']
-> Designator ':=' Expression
-> INHERITED
-> GOTO LabelId
StructStmt -> CompoundStmt
-> ConditionalStmt
-> LoopStmt
-> WithStmt
-> TryExceptStmt
-> TryFinallyStmt
-> RaiseStmt
-> AssemblerStmt
CompoundStmt -> BEGIN StmtList END
ConditionalStmt -> IfStmt
-> CaseStmt
IfStmt -> IF Expression THEN Statement [ELSE Statement]
CaseStmt -> CASE Expression OF CaseSelector ';'... [ELSE StmtList] [';'] END
CaseSelector -> CaseLabel ','... ':' Statement
CaseLabel -> ConstExpr ['..' ConstExpr]
LoopStmt -> RepeatStmt
-> WhileStmt
-> ForStmt
RepeatStmt -> REPEAT Statement UNTIL Expression
WhileStmt -> WHILE Expression DO Statement
ForStmt -> FOR QualId ':=' Expression (TO | DOWNTO) Expression DO Statement
WithStmt -> WITH IdentList DO Statement
TryExceptStmt -> TRY
Statement...
EXCEPT
ExceptionBlock
END
ExceptionBlock -> [ON [Ident ':'] TypeID DO Statement]...
[ELSE Statement...]
TryFinallyStmt -> TRY
Statement
FINALLY
Statement
END
RaiseStmt -> RAISE [object] [AT address]
AssemblerStatement -> ASM
-> <assemblylanguage>
-> END
ProcedureDeclSection -> ProcedureDecl
-> FunctionDecl
ProcedureDecl -> ProcedureHeading ';' [Directive] [PortabilityDirective]
Block ';'
FunctionDecl -> FunctionHeading ';' [Directive] [PortabilityDirective]
Block ';'
FunctionHeading -> FUNCTION Ident [FormalParameters] ':' (SimpleType | STRING)
ProcedureHeading -> PROCEDURE Ident [FormalParameters]
FormalParameters -> '(' [FormalParm ';'...] ')'
FormalParm -> [VAR | CONST | OUT] Parameter
Parameter -> IdentList [':' ([ARRAY OF] SimpleType | STRING | FILE)]
-> Ident ':' SimpleType '=' ConstExpr
Directive -> CDECL
-> REGISTER
-> DYNAMIC
-> VIRTUAL
-> EXPORT
-> EXTERNAL
-> NEAR
-> FAR
-> FORWARD
-> MESSAGE ConstExpr
-> OVERRIDE
-> OVERLOAD
-> PASCAL
-> REINTRODUCE
-> SAFECALL
-> STDCALL
-> VARARGS
-> LOCAL
-> ABSTRACT
ObjectType -> OBJECT [ObjHeritage] [ObjFieldList] [MethodList] END
ObjHeritage -> '(' QualId ')'
MethodList -> (MethodHeading [';' VIRTUAL]) ';'...
MethodHeading -> ProcedureHeading
-> FunctionHeading
-> ConstructorHeading
-> DestructorHeading
ConstructorHeading -> CONSTRUCTOR Ident [FormalParameters]
DestructorHeading -> DESTRUCTOR Ident [FormalParameters]
ObjFieldList -> (IdentList ':' Type) ';'
InitSection -> INITIALIZATION StmtList [FINALIZATION StmtList] END
-> BEGIN StmtList END
-> END
ClassType -> CLASS [ClassHeritage]
[ClassVisibility]
[ClassFieldList]
[ClassMethodList]
[ClassPropertyList]
END
ClassHeritage -> '(' IdentList ')'
ClassVisibility -> [PUBLIC | PROTECTED | PRIVATE | PUBLISHED]
ClassFieldList -> (ClassVisibility ObjFieldList) ';'...
ClassMethodList -> (ClassVisibility MethodList) ';'...
ClassPropertyList -> (ClassVisibility PropertyList ';')...
PropertyList -> PROPERTY Ident [PropertyInterface] [PropertySpecifiers] [PortabilityDirective]
PropertyInterface -> [PropertyParameterList] ':' Ident
PropertyParameterList -> '[' (IdentList ':' TypeId) ';'... ']'
PropertySpecifiers -> [INDEX ConstExpr]
[READ Ident]
[WRITE Ident]
[STORED (Ident | Constant)]
[(DEFAULT ConstExpr) | NODEFAULT]
[IMPLEMENTS TypeId]
InterfaceType -> INTERFACE [InterfaceHeritage]
[ClassMethodList]
[ClassPropertyList] ...
END
InterfaceHeritage -> '(' IdentList ')'
RequiresClause -> REQUIRES IdentList... ';'
ContainsClause -> CONTAINS IdentList... ';'
IdentList -> Ident ','...
QualId -> [UnitId '.'] Ident
TypeId -> [UnitId '.'] <type-identifier>
Ident -> <identifier>
ConstExpr -> <constant-expression>
UnitId -> <unit-identifier>
LabelId -> <label-identifier>
Number -> <number>
String -> <string>