EmitBaseline.CreateInitialBaseline Method

Definition

Namespace:

Microsoft.CodeAnalysis.Emit

Assembly:

Microsoft.CodeAnalysis.dll

Package:

Microsoft.CodeAnalysis.Common v4.7.0

Overloads

CreateInitialBaseline(ModuleMetadata, Func<MethodDefinitionHandle,EditAndContinueMethodDebugInformation>)	Creates an EmitBaseline from the metadata of the module before editing and from a function that maps from a method to an array of local names.
CreateInitialBaseline(ModuleMetadata, Func<MethodDefinitionHandle, EditAndContinueMethodDebugInformation>, Func<MethodDefinitionHandle, StandaloneSignatureHandle>, Boolean)	Creates an EmitBaseline from the metadata of the module before editing and from a function that maps from a method to an array of local names.

CreateInitialBaseline(ModuleMetadata, Func<MethodDefinitionHandle,EditAndContinueMethodDebugInformation>)

Source:

EmitBaseline.cs

Creates an EmitBaseline from the metadata of the module before editing and from a function that maps from a method to an array of local names.

public:
 static Microsoft::CodeAnalysis::Emit::EmitBaseline ^ CreateInitialBaseline(Microsoft::CodeAnalysis::ModuleMetadata ^ module, Func<System::Reflection::Metadata::MethodDefinitionHandle, Microsoft::CodeAnalysis::Emit::EditAndContinueMethodDebugInformation> ^ debugInformationProvider);

public static Microsoft.CodeAnalysis.Emit.EmitBaseline CreateInitialBaseline (Microsoft.CodeAnalysis.ModuleMetadata module, Func<System.Reflection.Metadata.MethodDefinitionHandle,Microsoft.CodeAnalysis.Emit.EditAndContinueMethodDebugInformation> debugInformationProvider);

static member CreateInitialBaseline : Microsoft.CodeAnalysis.ModuleMetadata * Func<System.Reflection.Metadata.MethodDefinitionHandle, Microsoft.CodeAnalysis.Emit.EditAndContinueMethodDebugInformation> -> Microsoft.CodeAnalysis.Emit.EmitBaseline

Public Shared Function CreateInitialBaseline (module As ModuleMetadata, debugInformationProvider As Func(Of MethodDefinitionHandle, EditAndContinueMethodDebugInformation)) As EmitBaseline

Parameters

module

ModuleMetadata

The metadata of the module before editing.

debugInformationProvider

Func<MethodDefinitionHandle,EditAndContinueMethodDebugInformation>

A function that for a method handle returns Edit and Continue debug information emitted by the compiler into the PDB. The function shall throw InvalidDataException if the debug information can't be read for the specified method. This exception and IOException are caught and converted to an emit diagnostic. Other exceptions are passed through.

Returns

EmitBaseline

An EmitBaseline for the module.

Exceptions

ArgumentException

module is not a PE image.

ArgumentNullException

debugInformationProvider is null.

IOException

Error reading module metadata.

BadImageFormatException

Module metadata is invalid.

ObjectDisposedException

Module has been disposed.

CreateInitialBaseline(ModuleMetadata, Func<MethodDefinitionHandle, EditAndContinueMethodDebugInformation>, Func<MethodDefinitionHandle, StandaloneSignatureHandle>, Boolean)

Source:

EmitBaseline.cs

Creates an EmitBaseline from the metadata of the module before editing and from a function that maps from a method to an array of local names.

public:
 static Microsoft::CodeAnalysis::Emit::EmitBaseline ^ CreateInitialBaseline(Microsoft::CodeAnalysis::ModuleMetadata ^ module, Func<System::Reflection::Metadata::MethodDefinitionHandle, Microsoft::CodeAnalysis::Emit::EditAndContinueMethodDebugInformation> ^ debugInformationProvider, Func<System::Reflection::Metadata::MethodDefinitionHandle, System::Reflection::Metadata::StandaloneSignatureHandle> ^ localSignatureProvider, bool hasPortableDebugInformation);

public static Microsoft.CodeAnalysis.Emit.EmitBaseline CreateInitialBaseline (Microsoft.CodeAnalysis.ModuleMetadata module, Func<System.Reflection.Metadata.MethodDefinitionHandle,Microsoft.CodeAnalysis.Emit.EditAndContinueMethodDebugInformation> debugInformationProvider, Func<System.Reflection.Metadata.MethodDefinitionHandle,System.Reflection.Metadata.StandaloneSignatureHandle> localSignatureProvider, bool hasPortableDebugInformation);

static member CreateInitialBaseline : Microsoft.CodeAnalysis.ModuleMetadata * Func<System.Reflection.Metadata.MethodDefinitionHandle, Microsoft.CodeAnalysis.Emit.EditAndContinueMethodDebugInformation> * Func<System.Reflection.Metadata.MethodDefinitionHandle, System.Reflection.Metadata.StandaloneSignatureHandle> * bool -> Microsoft.CodeAnalysis.Emit.EmitBaseline

Public Shared Function CreateInitialBaseline (module As ModuleMetadata, debugInformationProvider As Func(Of MethodDefinitionHandle, EditAndContinueMethodDebugInformation), localSignatureProvider As Func(Of MethodDefinitionHandle, StandaloneSignatureHandle), hasPortableDebugInformation As Boolean) As EmitBaseline

Parameters

module

ModuleMetadata

The metadata of the module before editing.

debugInformationProvider

Func<MethodDefinitionHandle,EditAndContinueMethodDebugInformation>

A function that for a method handle returns Edit and Continue debug information emitted by the compiler into the PDB. The function shall throw InvalidDataException if the debug information can't be read for the specified method. This exception and IOException are caught and converted to an emit diagnostic. Other exceptions are passed through.

localSignatureProvider

Func<MethodDefinitionHandle,StandaloneSignatureHandle>

A function that for a method handle returns the signature of its local variables. The function shall throw InvalidDataException if the information can't be read for the specified method. This exception and IOException are caught and converted to an emit diagnostic. Other exceptions are passed through.

hasPortableDebugInformation

Boolean

True if the baseline PDB is portable.

Returns

EmitBaseline

An EmitBaseline for the module.

Exceptions

ArgumentNullException

localSignatureProvider is null.

IOException

Error reading module metadata.

BadImageFormatException

Module metadata is invalid.

ObjectDisposedException

Module has been disposed.

Remarks

Only the initial baseline is created using this method; subsequent baselines are created automatically when emitting the differences in subsequent compilations.

When an active method (one for which a frame is allocated on a stack) is updated the values of its local variables need to be preserved. The mapping of local variable names to their slots in the frame is not included in the metadata and thus needs to be provided by debugInformationProvider.

The debugInformationProvider is only needed for the initial generation. The mapping for the subsequent generations is carried over through EmitBaseline. The compiler assigns slots to named local variables (including named temporary variables) it the order in which they appear in the source code. This property allows the compiler to reconstruct the local variable mapping for the initial generation. A subsequent generation may add a new variable in between two variables of the previous generation. Since the slots of the previous generation variables need to be preserved the only option is to add these new variables to the end. The slot ordering thus no longer matches the syntax ordering. It is therefore necessary to pass Baseline to the next generation (rather than e.g. create new EmitBaselines from scratch based on metadata produced by subsequent compilations).