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namespace Microsoft.FSharp.Compiler.SourceCodeServices
type InteractiveColorizer
    with 
        /// Color a line of F# source code, starting with the given lexState.  The lexState should be 0 for
        /// the first line of text. Returns an array of ranges of the text and two enumerations categorizing the
        /// tokens and characters covered by that range, i.e. TokenColorKind and TokenCharKind.  The enumerations
        /// are somewhat adhoc but useful enough to give good colorization options to the user in an IDE.
        ///
        /// A new lexState is also returned.  An IDE-plugin should in general cache the lexState 
        /// values for each line of the edited code.
        static member ColorLine : line:string * LexState -> (LineRange * TokenColorKind * TokenCharKind) array * LexState

        /// Same as ColorLine, but faster since only the resulting lexState is returned. Useful for colorizing
        /// the invisible text leading up to the part of a file that is actually displayed.  
        static member ColorSkipLine : line:string * LexState -> LexState

    end

type InteractiveChecker
    with 
        /// Create an instance of an InteractiveChecker.  Currently resources are not reclaimed.
        static member Create : unit -> InteractiveChecker
        /// Parse and (optionally) typecheck a source code file, returning a handle to the results of the parse including
        /// the reconstructed types in the file
        member ParseSource : source: string * options: ParseOptions -> ParseResults
    end