grammar.txt

Function
    -> Specifiers FunctionDeclaration ';'

FunctionArg
    -> FunctionDeclaration
    -> FunctionType '(' '*' Name ')' ArgsList

FunctionDeclaration
    -> FunctionType Name ArgsList

Specifiers
    -> e
    -> Specifier Specifiers

Specifier
    -> 'static'
    -> 'inline'

ArgsList
    -> '(' Args ')'

Args
    -> e
    -> 'void'
    -> NotEmptyArgs

FunctionType
    -> 'void'
    -> Type

NotEmptyArgs
    -> Arg RestArgs

RestArgs
    -> e
    -> , NotEmptyArgs

Arg
    -> Type Name
    -> FunctionArg

Name
    -> FirstSymbol OtherSymbols

FirstSymbol
    -> a-z A-Z _

OtherSymbols
    -> e
    -> a-z A-Z _ 0-9

Type
    -> TypeNameModifiers
    -> 'const' TypeNameModifiers

TypeNameModifiers
    -> TypeName Modifiers

Modifiers
    -> e
    -> '*' Modifiers
    -> 'const' Modifiers

TypeName
    -> SystemTypes
    -> 'struct' Name

SystemTypes
    -> 'void'
    -> NumericSpecifiers 'char'
    -> NumericSpecifiers 'int'
    -> NumericSpecifiers 'short' Int
    -> NumericSpecifiers 'long' Int
    -> NumericSpecifiers 'long' 'long' Int

Int
    -> e
    -> 'int'

NumericSpecifiers
    -> e
    -> 'unsigned'
    -> 'signed'