public PEDeltaAssemblyBuilder(
SourceAssemblySymbol sourceAssembly,
string outputName,
OutputKind outputKind,
ModulePropertiesForSerialization serializationProperties,
IEnumerable<ResourceDescription> manifestResources,
Func<AssemblySymbol, AssemblyIdentity> assemblySymbolMapper,
EmitBaseline previousGeneration,
IEnumerable<SemanticEdit> edits)
: base(sourceAssembly, outputName, outputKind, serializationProperties, manifestResources, assemblySymbolMapper, additionalTypes: ImmutableArray<NamedTypeSymbol>.Empty, metadataOnly:false)
{
var context = new EmitContext(this, null, new DiagnosticBag());
var module = previousGeneration.OriginalMetadata;
var compilation = sourceAssembly.DeclaringCompilation;
var metadataAssembly = compilation.GetBoundReferenceManager().CreatePEAssemblyForAssemblyMetadata(AssemblyMetadata.Create(module), MetadataImportOptions.All);
var metadataDecoder = new Microsoft.CodeAnalysis.CSharp.Symbols.Metadata.PE.MetadataDecoder(metadataAssembly.PrimaryModule);
previousGeneration = EnsureInitialized(previousGeneration, metadataDecoder);
var matchToMetadata = new SymbolMatcher(previousGeneration.AnonymousTypeMap, sourceAssembly, context, metadataAssembly);
SymbolMatcher matchToPrevious = null;
if (previousGeneration.Ordinal > 0)
{
var previousAssembly = ((CSharpCompilation)previousGeneration.Compilation).SourceAssembly;
var previousContext = new EmitContext((PEModuleBuilder)previousGeneration.PEModuleBuilder, null, new DiagnosticBag());
matchToPrevious = new SymbolMatcher(previousGeneration.AnonymousTypeMap, sourceAssembly, context, previousAssembly, previousContext);
}
this.previousDefinitions = new CSharpDefinitionMap(previousGeneration.OriginalMetadata.Module, edits, metadataDecoder, matchToMetadata, matchToPrevious);
this.previousGeneration = previousGeneration;
this.changes = new SymbolChanges(this.previousDefinitions, edits);
}
public PEDeltaAssemblyBuilder(
SourceAssemblySymbol sourceAssembly,
EmitOptions emitOptions,
OutputKind outputKind,
Cci.ModulePropertiesForSerialization serializationProperties,
IEnumerable<ResourceDescription> manifestResources,
EmitBaseline previousGeneration,
IEnumerable<SemanticEdit> edits,
Func<ISymbol, bool> isAddedSymbol)
: base(sourceAssembly, emitOptions, outputKind, serializationProperties, manifestResources, additionalTypes: ImmutableArray<NamedTypeSymbol>.Empty)
{
var initialBaseline = previousGeneration.InitialBaseline;
var context = new EmitContext(this, null, new DiagnosticBag());
// Hydrate symbols from initial metadata. Once we do so it is important to reuse these symbols across all generations,
// in order for the symbol matcher to be able to use reference equality once it maps symbols to initial metadata.
var metadataSymbols = GetOrCreateMetadataSymbols(initialBaseline, sourceAssembly.DeclaringCompilation);
var metadataDecoder = (MetadataDecoder)metadataSymbols.MetadataDecoder;
var metadataAssembly = (PEAssemblySymbol)metadataDecoder.ModuleSymbol.ContainingAssembly;
var matchToMetadata = new CSharpSymbolMatcher(metadataSymbols.AnonymousTypes, sourceAssembly, context, metadataAssembly);
CSharpSymbolMatcher matchToPrevious = null;
if (previousGeneration.Ordinal > 0)
{
var previousAssembly = ((CSharpCompilation)previousGeneration.Compilation).SourceAssembly;
var previousContext = new EmitContext((PEModuleBuilder)previousGeneration.PEModuleBuilder, null, new DiagnosticBag());
matchToPrevious = new CSharpSymbolMatcher(
previousGeneration.AnonymousTypeMap,
sourceAssembly: sourceAssembly,
sourceContext: context,
otherAssembly: previousAssembly,
otherContext: previousContext,
otherSynthesizedMembersOpt: previousGeneration.SynthesizedMembers);
}
_previousDefinitions = new CSharpDefinitionMap(previousGeneration.OriginalMetadata.Module, edits, metadataDecoder, matchToMetadata, matchToPrevious);
_previousGeneration = previousGeneration;
_changes = new SymbolChanges(_previousDefinitions, edits, isAddedSymbol);
// Workaround for https://github.com/dotnet/roslyn/issues/3192.
// When compiling state machine we stash types of awaiters and state-machine hoisted variables,
// so that next generation can look variables up and reuse their slots if possible.
//
// When we are about to allocate a slot for a lifted variable while compiling the next generation
// we map its type to the previous generation and then check the slot types that we stashed earlier.
// If the variable type matches we reuse it. In order to compare the previous variable type with the current one
// both need to be completely lowered (translated). Standard translation only goes one level deep.
// Generic arguments are not translated until they are needed by metadata writer.
//
// In order to get the fully lowered form we run the type symbols of stashed variables thru a deep translator
// that translates the symbol recursively.
_deepTranslator = new CSharpSymbolMatcher.DeepTranslator(sourceAssembly.GetSpecialType(SpecialType.System_Object));
}
