FSharpChecker (F# Compiler Guide)

FSharpChecker Type

Namespace: FSharp.Compiler.CodeAnalysis
Assembly: FSharp.Compiler.Service.dll
Base Type: obj

Used to parse and check F# source code.

Instance members

Static members

Static member	Description
`FSharpChecker.ActualCheckFileCount` Full Usage: `FSharpChecker.ActualCheckFileCount` Returns: `int`	Report a statistic for testability Returns: `int`
`FSharpChecker.ActualParseFileCount` Full Usage: `FSharpChecker.ActualParseFileCount` Returns: `int`	Report a statistic for testability Returns: `int`
`FSharpChecker.Create(?projectCacheSize, ?keepAssemblyContents, ?keepAllBackgroundResolutions, ?legacyReferenceResolver, ?tryGetMetadataSnapshot, ?suggestNamesForErrors, ?keepAllBackgroundSymbolUses, ?enableBackgroundItemKeyStoreAndSemanticClassification, ?enablePartialTypeChecking, ?parallelReferenceResolution, ?captureIdentifiersWhenParsing, ?documentSource, ?useSyntaxTreeCache, ?useTransparentCompiler)` Full Usage: `FSharpChecker.Create(?projectCacheSize, ?keepAssemblyContents, ?keepAllBackgroundResolutions, ?legacyReferenceResolver, ?tryGetMetadataSnapshot, ?suggestNamesForErrors, ?keepAllBackgroundSymbolUses, ?enableBackgroundItemKeyStoreAndSemanticClassification, ?enablePartialTypeChecking, ?parallelReferenceResolution, ?captureIdentifiersWhenParsing, ?documentSource, ?useSyntaxTreeCache, ?useTransparentCompiler)` Parameters: ?projectCacheSize : `int` - The optional size of the project checking cache. ?keepAssemblyContents : `bool` - Keep the checked contents of projects. ?keepAllBackgroundResolutions : `bool` - If false, do not keep full intermediate checking results from background checking suitable for returning from GetBackgroundCheckResultsForFileInProject. This reduces memory usage. ?legacyReferenceResolver : `LegacyReferenceResolver` - An optional resolver for legacy MSBuild references ?tryGetMetadataSnapshot : `ILReaderTryGetMetadataSnapshot` - An optional resolver to access the contents of .NET binaries in a memory-efficient way ?suggestNamesForErrors : `bool` - Indicate whether name suggestion should be enabled ?keepAllBackgroundSymbolUses : `bool` - Indicate whether all symbol uses should be kept in background checking ?enableBackgroundItemKeyStoreAndSemanticClassification : `bool` - Indicates whether a table of symbol keys should be kept for background compilation ?enablePartialTypeChecking : `bool` - Indicates whether to perform partial type checking. Cannot be set to true if keepAssmeblyContents is true. If set to true, can cause duplicate type-checks when richer information on a file is needed, but can skip background type-checking entirely on implementation files with signature files. ?parallelReferenceResolution : `bool` - Indicates whether to resolve references in parallel. ?captureIdentifiersWhenParsing : `bool` - When set to true we create a set of all identifiers for each parsed file which can be used to speed up finding references. ?documentSource : `DocumentSource` - Default: FileSystem. You can use Custom source to provide a function that will return the source for a given file path instead of reading it from the file system. Note that with this option the FSharpChecker will also not monitor the file system for file changes. It will expect to be notified of changes via the NotifyFileChanged method. ?useSyntaxTreeCache : `bool` - Default: true. Indicates whether to keep parsing results in a cache. ?useTransparentCompiler : `bool` - Default: false. Indicates whether we use a new experimental background compiler. This does not yet support all features Returns: `FSharpChecker`	Create an instance of an FSharpChecker. ?projectCacheSize : `int` The optional size of the project checking cache. ?keepAssemblyContents : `bool` Keep the checked contents of projects. ?keepAllBackgroundResolutions : `bool` If false, do not keep full intermediate checking results from background checking suitable for returning from GetBackgroundCheckResultsForFileInProject. This reduces memory usage. ?legacyReferenceResolver : `LegacyReferenceResolver` An optional resolver for legacy MSBuild references ?tryGetMetadataSnapshot : `ILReaderTryGetMetadataSnapshot` An optional resolver to access the contents of .NET binaries in a memory-efficient way ?suggestNamesForErrors : `bool` Indicate whether name suggestion should be enabled ?keepAllBackgroundSymbolUses : `bool` Indicate whether all symbol uses should be kept in background checking ?enableBackgroundItemKeyStoreAndSemanticClassification : `bool` Indicates whether a table of symbol keys should be kept for background compilation ?enablePartialTypeChecking : `bool` Indicates whether to perform partial type checking. Cannot be set to true if keepAssmeblyContents is true. If set to true, can cause duplicate type-checks when richer information on a file is needed, but can skip background type-checking entirely on implementation files with signature files. ?parallelReferenceResolution : `bool` Indicates whether to resolve references in parallel. ?captureIdentifiersWhenParsing : `bool` When set to true we create a set of all identifiers for each parsed file which can be used to speed up finding references. ?documentSource : `DocumentSource` Default: FileSystem. You can use Custom source to provide a function that will return the source for a given file path instead of reading it from the file system. Note that with this option the FSharpChecker will also not monitor the file system for file changes. It will expect to be notified of changes via the NotifyFileChanged method. ?useSyntaxTreeCache : `bool` Default: true. Indicates whether to keep parsing results in a cache. ?useTransparentCompiler : `bool` Default: false. Indicates whether we use a new experimental background compiler. This does not yet support all features Returns: `FSharpChecker`

Instance member	Description
`this.BeforeBackgroundFileCheck` Full Usage: `this.BeforeBackgroundFileCheck` Returns: `IEvent<string * FSharpProjectOptions>`	Notify the host that the logical type checking context for a file has now been updated internally and that the file has become eligible to be re-typechecked for errors. The event will be raised on a background thread. Returns: `IEvent<string * FSharpProjectOptions>`
`this.CheckFileInProject` Full Usage: `this.CheckFileInProject` Parameters: parseResults : `FSharpParseFileResults` - The results of ParseFile for this file. fileName : `string` - The name of the file in the project whose source is being checked. fileVersion : `int` - An integer that can be used to indicate the version of the file. This will be returned by TryGetRecentCheckResultsForFile when looking up the file. sourceText : `ISourceText` - The full source for the file. options : `FSharpProjectOptions` - The options for the project or script. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpCheckFileAnswer>`	Check a source code file, returning a handle to the results Note: all files except the one being checked are read from the FileSystem API Return FSharpCheckFileAnswer.Aborted if a parse tree was not available. parseResults : `FSharpParseFileResults` The results of ParseFile for this file. fileName : `string` The name of the file in the project whose source is being checked. fileVersion : `int` An integer that can be used to indicate the version of the file. This will be returned by TryGetRecentCheckResultsForFile when looking up the file. sourceText : `ISourceText` The full source for the file. options : `FSharpProjectOptions` The options for the project or script. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpCheckFileAnswer>`
`this.ClearCache` Full Usage: `this.ClearCache` Parameters: projects : `FSharpProjectIdentifier seq` ?userOpName : `string`	projects : `FSharpProjectIdentifier seq` ?userOpName : `string`
`this.ClearCache` Full Usage: `this.ClearCache` Parameters: options : `FSharpProjectOptions seq` - The given project options. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request.	Clear the internal cache of the given projects. options : `FSharpProjectOptions seq` The given project options. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request.
`this.ClearLanguageServiceRootCachesAndCollectAndFinalizeAllTransients` Full Usage: `this.ClearLanguageServiceRootCachesAndCollectAndFinalizeAllTransients`	Flush all caches and garbage collect
`this.Compile` Full Usage: `this.Compile` Parameters: argv : `string[]` - The command line arguments for the project build. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpDiagnostic[] * int>`	Compile using the given flags. Source files names are resolved via the FileSystem API. The output file must be given by a -o flag. The first argument is ignored and can just be "fsc.exe". argv : `string[]` The command line arguments for the project build. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpDiagnostic[] * int>`
`this.FileChecked` Full Usage: `this.FileChecked` Returns: `IEvent<string * FSharpProjectOptions>`	Raised after a check of a file in the background analysis. The event will be raised on a background thread. Returns: `IEvent<string * FSharpProjectOptions>`
`this.FileParsed` Full Usage: `this.FileParsed` Returns: `IEvent<string * FSharpProjectOptions>`	Raised after a parse of a file in the background analysis. The event will be raised on a background thread. Returns: `IEvent<string * FSharpProjectOptions>`
`this.FindBackgroundReferencesInFile` Full Usage: `this.FindBackgroundReferencesInFile` Parameters: fileName : `string` projectSnapshot : `FSharpProjectSnapshot` symbol : `FSharpSymbol` ?userOpName : `string` Returns: `Async<range seq>`	fileName : `string` projectSnapshot : `FSharpProjectSnapshot` symbol : `FSharpSymbol` ?userOpName : `string` Returns: `Async<range seq>`
`this.FindBackgroundReferencesInFile` Full Usage: `this.FindBackgroundReferencesInFile` Parameters: fileName : `string` - The file name for the file. options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. symbol : `FSharpSymbol` - The symbol to find all uses in the file. ?canInvalidateProject : `bool` - Default: true. If true, this call can invalidate the current state of project if the options have changed. If false, the current state of the project will be used. ?fastCheck : `bool` - Default: false. Experimental feature that makes the operation faster. Requires FSharpChecker to be created with captureIdentifiersWhenParsing = true. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<range seq>`	Optimized find references for a given symbol in a file of project. All files are read from the FileSystem API, including the file being checked. Can cause a second type-check when `enablePartialTypeChecking` is true on the FSharpChecker. fileName : `string` The file name for the file. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. symbol : `FSharpSymbol` The symbol to find all uses in the file. ?canInvalidateProject : `bool` Default: true. If true, this call can invalidate the current state of project if the options have changed. If false, the current state of the project will be used. ?fastCheck : `bool` Default: false. Experimental feature that makes the operation faster. Requires FSharpChecker to be created with captureIdentifiersWhenParsing = true. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<range seq>`
`this.GetBackgroundCheckResultsForFileInProject` Full Usage: `this.GetBackgroundCheckResultsForFileInProject` Parameters: fileName : `string` - The file name for the file. options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults * FSharpCheckFileResults>`	Like CheckFileInProject, but uses the existing results from the background builder. All files are read from the FileSystem API, including the file being checked. Can cause a second type-check when `enablePartialTypeChecking` is true on the FSharpChecker. fileName : `string` The file name for the file. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults * FSharpCheckFileResults>`
`this.GetBackgroundParseResultsForFileInProject` Full Usage: `this.GetBackgroundParseResultsForFileInProject` Parameters: fileName : `string` - The name for the file. options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults>`	Like ParseFile, but uses results from the background builder. All files are read from the FileSystem API, including the file being checked. fileName : `string` The name for the file. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults>`
`this.GetBackgroundSemanticClassificationForFile` Full Usage: `this.GetBackgroundSemanticClassificationForFile` Parameters: fileName : `string` - The file name for the file. snapshot : `FSharpProjectSnapshot` - The project snapshot for which we want to get the semantic classification. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<SemanticClassificationView option>`	Get semantic classification for a file. fileName : `string` The file name for the file. snapshot : `FSharpProjectSnapshot` The project snapshot for which we want to get the semantic classification. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<SemanticClassificationView option>`
`this.GetBackgroundSemanticClassificationForFile` Full Usage: `this.GetBackgroundSemanticClassificationForFile` Parameters: fileName : `string` - The file name for the file. options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<SemanticClassificationView option>`	Get semantic classification for a file. All files are read from the FileSystem API, including the file being checked. Can cause a second type-check when `enablePartialTypeChecking` is true on the FSharpChecker. fileName : `string` The file name for the file. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<SemanticClassificationView option>`
`this.GetParsingOptionsFromCommandLineArgs` Full Usage: `this.GetParsingOptionsFromCommandLineArgs` Parameters: argv : `string list` - The command line arguments for the project build. ?isInteractive : `bool` - Indicates that parsing should assume the INTERACTIVE define and related settings ?isEditing : `bool` - Indicates that compilation should assume the EDITING define and related settings Returns: `FSharpParsingOptions * FSharpDiagnostic list`	Get the FSharpParsingOptions implied by a set of command line arguments. argv : `string list` The command line arguments for the project build. ?isInteractive : `bool` Indicates that parsing should assume the INTERACTIVE define and related settings ?isEditing : `bool` Indicates that compilation should assume the EDITING define and related settings Returns: `FSharpParsingOptions * FSharpDiagnostic list`
`this.GetParsingOptionsFromCommandLineArgs` Full Usage: `this.GetParsingOptionsFromCommandLineArgs` Parameters: sourceFiles : `string list` - Initial source files list. Additional files may be added during argv evaluation. argv : `string list` - The command line arguments for the project build. ?isInteractive : `bool` - Indicates that parsing should assume the INTERACTIVE define and related settings ?isEditing : `bool` - Indicates that compilation should assume the EDITING define and related settings Returns: `FSharpParsingOptions * FSharpDiagnostic list`	Get the FSharpParsingOptions implied by a set of command line arguments and list of source files. sourceFiles : `string list` Initial source files list. Additional files may be added during argv evaluation. argv : `string list` The command line arguments for the project build. ?isInteractive : `bool` Indicates that parsing should assume the INTERACTIVE define and related settings ?isEditing : `bool` Indicates that compilation should assume the EDITING define and related settings Returns: `FSharpParsingOptions * FSharpDiagnostic list`
`this.GetParsingOptionsFromProjectOptions` Full Usage: `this.GetParsingOptionsFromProjectOptions` Parameters: options : `FSharpProjectOptions` - The overall options. Returns: `FSharpParsingOptions * FSharpDiagnostic list`	Get the FSharpParsingOptions implied by a FSharpProjectOptions. options : `FSharpProjectOptions` The overall options. Returns: `FSharpParsingOptions * FSharpDiagnostic list`
`this.GetProjectOptionsFromCommandLineArgs` Full Usage: `this.GetProjectOptionsFromCommandLineArgs` Parameters: projectFileName : `string` - Used to differentiate between projects and for the base directory of the project. argv : `string[]` - The command line arguments for the project build. ?loadedTimeStamp : `DateTime` - Indicates when the script was loaded into the editing environment, Indicates that compilation should assume the EDITING define and related settingsIndicates that compilation should assume the INTERACTIVE define and related settings so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?isInteractive : `bool` ?isEditing : `bool` Returns: `FSharpProjectOptions`	Get the FSharpProjectOptions implied by a set of command line arguments. projectFileName : `string` Used to differentiate between projects and for the base directory of the project. argv : `string[]` The command line arguments for the project build. ?loadedTimeStamp : `DateTime` Indicates when the script was loaded into the editing environment, Indicates that compilation should assume the EDITING define and related settingsIndicates that compilation should assume the INTERACTIVE define and related settings so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?isInteractive : `bool` ?isEditing : `bool` Returns: `FSharpProjectOptions`
`this.GetProjectOptionsFromScript` Full Usage: `this.GetProjectOptionsFromScript` Parameters: fileName : `string` - Used to differentiate between scripts, to consider each script a separate project. Also used in formatted error messages. source : `ISourceText` - The source for the file. ?previewEnabled : `bool` - Is the preview compiler enabled. ?loadedTimeStamp : `DateTime` - Indicates when the script was loaded into the editing environment, so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?otherFlags : `string[]` - Other flags for compilation. ?useFsiAuxLib : `bool` - Add a default reference to the FSharp.Compiler.Interactive.Settings library. ?useSdkRefs : `bool` - Use the implicit references from the .NET SDK. ?assumeDotNetFramework : `bool` - Set up compilation and analysis for .NET Framework scripts. ?sdkDirOverride : `string` - Override the .NET SDK used for default references. ?optionsStamp : `int64` - An optional unique stamp for the options. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpProjectOptions * FSharpDiagnostic list>`	For a given script file, get the FSharpProjectOptions implied by the #load closure. All files are read from the FileSystem API, except the file being checked. fileName : `string` Used to differentiate between scripts, to consider each script a separate project. Also used in formatted error messages. source : `ISourceText` The source for the file. ?previewEnabled : `bool` Is the preview compiler enabled. ?loadedTimeStamp : `DateTime` Indicates when the script was loaded into the editing environment, so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?otherFlags : `string[]` Other flags for compilation. ?useFsiAuxLib : `bool` Add a default reference to the FSharp.Compiler.Interactive.Settings library. ?useSdkRefs : `bool` Use the implicit references from the .NET SDK. ?assumeDotNetFramework : `bool` Set up compilation and analysis for .NET Framework scripts. ?sdkDirOverride : `string` Override the .NET SDK used for default references. ?optionsStamp : `int64` An optional unique stamp for the options. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpProjectOptions * FSharpDiagnostic list>`
`this.GetProjectSnapshotFromScript` Full Usage: `this.GetProjectSnapshotFromScript` Parameters: fileName : `string` - Used to differentiate between scripts, to consider each script a separate project. Also used in formatted error messages. source : `ISourceTextNew` - The source for the file. ?documentSource : `DocumentSource` - DocumentSource to load any additional files. ?previewEnabled : `bool` - Is the preview compiler enabled. ?loadedTimeStamp : `DateTime` - Indicates when the script was loaded into the editing environment, so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?otherFlags : `string[]` - Other flags for compilation. ?useFsiAuxLib : `bool` - Add a default reference to the FSharp.Compiler.Interactive.Settings library. ?useSdkRefs : `bool` - Use the implicit references from the .NET SDK. ?assumeDotNetFramework : `bool` - Set up compilation and analysis for .NET Framework scripts. ?sdkDirOverride : `string` - Override the .NET SDK used for default references. ?optionsStamp : `int64` - An optional unique stamp for the options. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpProjectSnapshot * FSharpDiagnostic list>`	fileName : `string` Used to differentiate between scripts, to consider each script a separate project. Also used in formatted error messages. source : `ISourceTextNew` The source for the file. ?documentSource : `DocumentSource` DocumentSource to load any additional files. ?previewEnabled : `bool` Is the preview compiler enabled. ?loadedTimeStamp : `DateTime` Indicates when the script was loaded into the editing environment, so that an 'unload' and 'reload' action will cause the script to be considered as a new project, so that references are re-resolved. ?otherFlags : `string[]` Other flags for compilation. ?useFsiAuxLib : `bool` Add a default reference to the FSharp.Compiler.Interactive.Settings library. ?useSdkRefs : `bool` Use the implicit references from the .NET SDK. ?assumeDotNetFramework : `bool` Set up compilation and analysis for .NET Framework scripts. ?sdkDirOverride : `string` Override the .NET SDK used for default references. ?optionsStamp : `int64` An optional unique stamp for the options. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpProjectSnapshot * FSharpDiagnostic list>`
`this.InvalidateAll` Full Usage: `this.InvalidateAll`	This function is called when the entire environment is known to have changed for reasons not encoded in the ProjectOptions of any project/compilation.
`this.InvalidateConfiguration` Full Usage: `this.InvalidateConfiguration` Parameters: projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string`	This function is called when the configuration is known to have changed for reasons not encoded in the projectSnapshot. For example, dependent references may have been deleted or created. projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string`
`this.InvalidateConfiguration` Full Usage: `this.InvalidateConfiguration` Parameters: options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request.	This function is called when the configuration is known to have changed for reasons not encoded in the ProjectOptions. For example, dependent references may have been deleted or created. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request.
`this.MatchBraces` Full Usage: `this.MatchBraces` Parameters: fileName : `string` - The fileName for the file, used to help caching of results. sourceText : `ISourceText` - The full source for the file. options : `FSharpParsingOptions` - Parsing options for the project or script. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<(range * range)[]>`	Parse a source code file, returning information about brace matching in the file. Return an enumeration of the matching parenthetical tokens in the file. fileName : `string` The fileName for the file, used to help caching of results. sourceText : `ISourceText` The full source for the file. options : `FSharpParsingOptions` Parsing options for the project or script. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<(range * range)[]>`
`this.NotifyFileChanged` Full Usage: `this.NotifyFileChanged` Parameters: fileName : `string` options : `FSharpProjectOptions` ?userOpName : `string` Returns: `Async<unit>`	Notify the checker that given file has changed. This needs to be used when checker is created with documentSource = Custom. fileName : `string` options : `FSharpProjectOptions` ?userOpName : `string` Returns: `Async<unit>`
`this.ParseAndCheckFileInProject` Full Usage: `this.ParseAndCheckFileInProject` Parameters: fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpParseFileResults * FSharpCheckFileAnswer>`	fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpParseFileResults * FSharpCheckFileAnswer>`
`this.ParseAndCheckFileInProject` Full Usage: `this.ParseAndCheckFileInProject` Parameters: fileName : `string` - The name of the file in the project whose source is being checked. fileVersion : `int` - An integer that can be used to indicate the version of the file. This will be returned by TryGetRecentCheckResultsForFile when looking up the file. sourceText : `ISourceText` - The source for the file. options : `FSharpProjectOptions` - The options for the project or script. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults * FSharpCheckFileAnswer>`	Parse and check a source code file, returning a handle to the results Note: all files except the one being checked are read from the FileSystem API Return FSharpCheckFileAnswer.Aborted if a parse tree was not available. fileName : `string` The name of the file in the project whose source is being checked. fileVersion : `int` An integer that can be used to indicate the version of the file. This will be returned by TryGetRecentCheckResultsForFile when looking up the file. sourceText : `ISourceText` The source for the file. options : `FSharpProjectOptions` The options for the project or script. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults * FSharpCheckFileAnswer>`
`this.ParseAndCheckProject` Full Usage: `this.ParseAndCheckProject` Parameters: projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpCheckProjectResults>`	projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpCheckProjectResults>`
`this.ParseAndCheckProject` Full Usage: `this.ParseAndCheckProject` Parameters: options : `FSharpProjectOptions` - The options for the project or script. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpCheckProjectResults>`	Parse and typecheck all files in a project. All files are read from the FileSystem API Can cause a second type-check on the entire project when `enablePartialTypeChecking` is true on the FSharpChecker. options : `FSharpProjectOptions` The options for the project or script. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpCheckProjectResults>`
`this.ParseFile` Full Usage: `this.ParseFile` Parameters: fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpParseFileResults>`	fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `Async<FSharpParseFileResults>`
`this.ParseFile` Full Usage: `this.ParseFile` Parameters: fileName : `string` - The path for the file. The file name is used as a module name for implicit top level modules (e.g. in scripts). sourceText : `ISourceText` - The source to be parsed. options : `FSharpParsingOptions` - Parsing options for the project or script. ?cache : `bool` - Store the parse in a size-limited cache associated with the FSharpChecker. Default: true ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults>`	Parses a source code for a file and caches the results. Returns an AST that can be traversed for various features. fileName : `string` The path for the file. The file name is used as a module name for implicit top level modules (e.g. in scripts). sourceText : `ISourceText` The source to be parsed. options : `FSharpParsingOptions` Parsing options for the project or script. ?cache : `bool` Store the parse in a size-limited cache associated with the FSharpChecker. Default: true ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `Async<FSharpParseFileResults>`
`this.ProjectChecked` Full Usage: `this.ProjectChecked` Returns: `IEvent<FSharpProjectOptions>`	Notify the host that a project has been fully checked in the background (using file contents provided by the file system API) The event may be raised on a background thread. Returns: `IEvent<FSharpProjectOptions>`
`this.TokenizeFile` Full Usage: `this.TokenizeFile` Parameters: source : `string` Returns: `FSharpTokenInfo[][]`	Tokenize an entire file, line by line source : `string` Returns: `FSharpTokenInfo[][]`
`this.TokenizeLine` Full Usage: `this.TokenizeLine` Parameters: line : `string` state : `FSharpTokenizerLexState` Returns: `FSharpTokenInfo[] * FSharpTokenizerLexState`	Tokenize a single line, returning token information and a tokenization state represented by an integer line : `string` state : `FSharpTokenizerLexState` Returns: `FSharpTokenInfo[] * FSharpTokenizerLexState`
`this.TryGetRecentCheckResultsForFile` Full Usage: `this.TryGetRecentCheckResultsForFile` Parameters: fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `(FSharpParseFileResults * FSharpCheckFileResults) option`	fileName : `string` projectSnapshot : `FSharpProjectSnapshot` ?userOpName : `string` Returns: `(FSharpParseFileResults * FSharpCheckFileResults) option`
`this.TryGetRecentCheckResultsForFile` Full Usage: `this.TryGetRecentCheckResultsForFile` Parameters: fileName : `string` - The file name for the file. options : `FSharpProjectOptions` - The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?sourceText : `ISourceText` - Optionally, specify source that must match the previous parse precisely. ?userOpName : `string` - An optional string used for tracing compiler operations associated with this request. Returns: `(FSharpParseFileResults * FSharpCheckFileResults * int64) option`	Try to get type check results for a file. This looks up the results of recent type checks of the same file, regardless of contents. The version tag specified in the original check of the file is returned. If the source of the file has changed the results returned by this function may be out of date, though may still be usable for generating intellisense menus and information. fileName : `string` The file name for the file. options : `FSharpProjectOptions` The options for the project or script, used to determine active --define conditionals and other options relevant to parsing. ?sourceText : `ISourceText` Optionally, specify source that must match the previous parse precisely. ?userOpName : `string` An optional string used for tracing compiler operations associated with this request. Returns: `(FSharpParseFileResults * FSharpCheckFileResults * int64) option`
`this.UsesTransparentCompiler` Full Usage: `this.UsesTransparentCompiler` Returns: `bool`	Returns: `bool`