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Move keymarshalling method into marshaller class (#82)
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5 files changed

+176
-135
lines changed

5 files changed

+176
-135
lines changed

‎src/DynamoDBGenerator.SourceGenerator/Generations/AttributeExpressionValue.cs‎

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using DynamoDBGenerator.SourceGenerator.Types;
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using Microsoft.CodeAnalysis;
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using static DynamoDBGenerator.SourceGenerator.Constants.DynamoDBGenerator;
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using Marshaller = DynamoDBGenerator.SourceGenerator.Generations.Marshalling.Marshaller;
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namespace DynamoDBGenerator.SourceGenerator.Generations;
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public static class AttributeExpressionValue

‎src/DynamoDBGenerator.SourceGenerator/Generations/KeyMarshaller.cs‎

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This file was deleted.

‎src/DynamoDBGenerator.SourceGenerator/Generations/Marshalling/Keys.cs‎

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using DynamoDBGenerator.SourceGenerator.Extensions;
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using DynamoDBGenerator.SourceGenerator.Types;
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using Microsoft.CodeAnalysis;
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using static DynamoDBGenerator.SourceGenerator.Constants.DynamoDBGenerator;
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namespace DynamoDBGenerator.SourceGenerator.Generations.Marshalling;
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internal static partial class Marshaller
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{
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internal static class KeyMarshaller
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{
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private const string DictionaryName = "attributeValues";
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private const string EnforcePkReference = "isPartitionKey";
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private const string EnforceRkReference = "isRangeKey";
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private static readonly Func<ITypeSymbol, string> MethodName =
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TypeExtensions.SuffixedTypeSymbolNameFactory("Keys", SymbolEqualityComparer.IncludeNullability);
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private const string PkReference = "partitionKey";
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private const string RkReference = "rangeKey";
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private static IEnumerable<string> CreateAssignment(string validateReference, string keyReference,
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DynamoDbDataMember dataMember, MarshallerOptions options)
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{
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const string reference = "value";
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var expectedType = dataMember.DataMember.Type.Representation().original;
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var expression = $"{keyReference} is {expectedType} {{ }} {reference}";
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var innerContent = $"if ({expression}) "
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.CreateScope(
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$@"{DictionaryName}.Add(""{dataMember.AttributeName}"", {InvokeMarshallerMethod(dataMember.DataMember.Type, reference, $"nameof({keyReference})", options)});")
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.Concat($"else if ({keyReference} is null) ".CreateScope(
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$@"throw {ExceptionHelper.KeysArgumentNullExceptionMethod}(""{dataMember.DataMember.Name}"", ""{keyReference}"");"))
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.Concat("else".CreateScope(
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$@"throw {ExceptionHelper.KeysInvalidConversionExceptionMethod}(""{dataMember.DataMember.Name}"", ""{keyReference}"", {keyReference}, ""{expectedType}"");"));
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return $"if ({validateReference})".CreateScope(innerContent);
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}
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private static IEnumerable<string> MethodBody(ITypeSymbol typeSymbol,
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Func<ITypeSymbol, DynamoDbDataMember[]> fn, MarshallerOptions options)
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{
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var keyStructure = DynamoDbDataMember.GetKeyStructure(fn(typeSymbol));
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if (keyStructure is null)
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{
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yield return @$"throw {ExceptionHelper.NoDynamoDBKeyAttributesExceptionMethod}(""{typeSymbol}"");";
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yield break;
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}
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yield return $"var {DictionaryName} = new Dictionary<string, AttributeValue>(2);";
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var switchBody = GetAssignments(keyStructure.Value, options)
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.SelectMany(x =>
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$"case {(x.IndexName is null ? "null" : @$"""{x.IndexName}""")}:".CreateScope(x.assignments)
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.Append("break;"))
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.Append($"default: throw {ExceptionHelper.MissMatchedIndexNameExceptionMethod}(nameof(index), index);");
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foreach (var s in "switch (index)".CreateScope(switchBody))
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yield return s;
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var validateSwitch = $"if ({EnforcePkReference} && {EnforceRkReference} && {DictionaryName}.Count == 2)"
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.CreateScope($"return {DictionaryName};")
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.Concat($"if ({EnforcePkReference} && {EnforceRkReference} is false && {DictionaryName}.Count == 1)"
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.CreateScope($"return {DictionaryName};"))
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.Concat($"if ({EnforcePkReference} is false && {EnforceRkReference} && {DictionaryName}.Count == 1)"
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.CreateScope($"return {DictionaryName};"))
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.Concat($"if ({EnforcePkReference} && {EnforceRkReference} && {DictionaryName}.Count == 1)".CreateScope(
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$"throw {ExceptionHelper.KeysMissingDynamoDBAttributeExceptionMethod}({PkReference}, {RkReference});"))
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.Append($"throw {ExceptionHelper.ShouldNeverHappenExceptionMethod}();");
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foreach (var s in validateSwitch)
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yield return s;
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}
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internal static IEnumerable<string> CreateKeys(IEnumerable<DynamoDBMarshallerArguments> arguments,
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Func<ITypeSymbol, DynamoDbDataMember[]> getDynamoDbProperties, MarshallerOptions options)
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{
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var hashSet = new HashSet<ITypeSymbol>(SymbolEqualityComparer.IncludeNullability);
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return arguments
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.SelectMany(x => CodeFactory.Create(x.EntityTypeSymbol,
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y => StaticAttributeValueDictionaryKeys(y, getDynamoDbProperties, options), hashSet));
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}
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private static IEnumerable<(string? IndexName, IEnumerable<string> assignments)> GetAssignments(
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DynamoDBKeyStructure keyStructure, MarshallerOptions options)
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{
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yield return keyStructure switch
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{
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{ PartitionKey: var pk, SortKey: { } sortKey } => (null,
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CreateAssignment(EnforcePkReference, PkReference, pk, options)
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.Concat(CreateAssignment(EnforceRkReference, RkReference, sortKey, options))),
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{ PartitionKey: var pk, SortKey: null } => (null,
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CreateAssignment(EnforcePkReference, PkReference, pk, options)
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.Concat(MissingAssigment(EnforceRkReference, RkReference)))
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};
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foreach (var gsi in keyStructure.GlobalSecondaryIndices)
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{
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yield return gsi switch
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{
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{ PartitionKey: var pk, SortKey: { } sortKey } => (gsi.Name,
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CreateAssignment(EnforcePkReference, PkReference, pk, options)
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.Concat(CreateAssignment(EnforceRkReference, RkReference, sortKey, options))),
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{ PartitionKey: var pk, SortKey: null } => (gsi.Name,
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CreateAssignment(EnforcePkReference, PkReference, pk, options)
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.Concat(MissingAssigment(EnforceRkReference, RkReference)))
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};
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}
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foreach (var lsi in keyStructure.LocalSecondaryIndices)
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{
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yield return (lsi, keyStructure.PartitionKey) switch
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{
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{ PartitionKey: var pk, lsi: var sortKey } => (lsi.Name,
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CreateAssignment(EnforcePkReference, PkReference, pk, options)
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.Concat(CreateAssignment(EnforceRkReference, RkReference, sortKey.SortKey, options)))
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};
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}
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}
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private static IEnumerable<string> MissingAssigment(string validateReference, string keyReference)
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{
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var expression = $"{validateReference} && {keyReference} is not null";
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return $"if ({expression})".CreateScope(
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$"throw {ExceptionHelper.KeysValueWithNoCorrespondenceMethod}(\"{keyReference}\", {keyReference});");
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}
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internal static IEnumerable<string> IndexKeyMarshallerRootSignature(ITypeSymbol typeSymbol)
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{
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return
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$"public {Constants.DynamoDBGenerator.Marshaller.IndexKeyMarshallerInterface} IndexKeyMarshaller(string index)"
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.CreateScope(
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"ArgumentNullException.ThrowIfNull(index);",
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$"return new {IndexKeyMarshallerImplementationTypeName}((pk, rk, ipk, irk, dm) => {ClassName}.{MethodName(typeSymbol)}({MarshallerOptions.FieldReference}, pk, rk, ipk, irk, dm), index);"
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);
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}
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public const string PrimaryKeyMarshallerReference = "PrimaryKeyMarshaller";
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public const string PrimaryKeyMarshallerDeclaration =
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$"public {Constants.DynamoDBGenerator.Marshaller.KeyMarshallerInterface} {PrimaryKeyMarshallerReference} {{ get; }}";
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internal static string AssignmentRoot(ITypeSymbol typeSymbol)
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{
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return
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$"new {KeyMarshallerImplementationTypeName}((pk, rk, ipk, irk, dm) => {ClassName}.{MethodName(typeSymbol)}({MarshallerOptions.FieldReference}, pk, rk, ipk, irk, dm))";
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}
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private static CodeFactory StaticAttributeValueDictionaryKeys(ITypeSymbol typeSymbol,
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Func<ITypeSymbol, DynamoDbDataMember[]> fn, MarshallerOptions options)
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{
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var code =
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$"public static Dictionary<string, AttributeValue> {MethodName(typeSymbol)}({MarshallerOptions.Name} {MarshallerOptions.ParamReference}, object? {PkReference}, object? {RkReference}, bool {EnforcePkReference}, bool {EnforceRkReference}, string? index = null)"
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.CreateScope(MethodBody(typeSymbol, fn, options));
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return new CodeFactory(code);
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}
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}
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}

src/DynamoDBGenerator.SourceGenerator/Generations/Marshaller.cs renamed to src/DynamoDBGenerator.SourceGenerator/Generations/Marshalling/Marshaller.cs

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@@ -1,19 +1,18 @@
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using System.Collections.Immutable;
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using DynamoDBGenerator.SourceGenerator.Extensions;
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using DynamoDBGenerator.SourceGenerator.Types;
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using Microsoft.CodeAnalysis;
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using static DynamoDBGenerator.SourceGenerator.Constants.DynamoDBGenerator;
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namespace DynamoDBGenerator.SourceGenerator.Generations;
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namespace DynamoDBGenerator.SourceGenerator.Generations.Marshalling;
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public static class Marshaller
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internal static partial class Marshaller
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{
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private const string ClassName = $"_{Constants.DynamoDBGenerator.Marshaller.MarshallMethodName}_";
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private const string DataMember = "dataMember";
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private const string DictionaryReference = "attributeValues";
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private static readonly Func<ITypeSymbol, string> GetSerializationMethodName = TypeExtensions.SuffixedTypeSymbolNameFactory("_M", SymbolEqualityComparer.IncludeNullability);
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private const string ParamReference = "entity";
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internal static IEnumerable<string> CreateClass(IEnumerable<DynamoDBMarshallerArguments> arguments, Func<ITypeSymbol, DynamoDbDataMember[]> getDynamoDbProperties, MarshallerOptions options)
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internal static IEnumerable<string> CreateClass(DynamoDBMarshallerArguments[] arguments, Func<ITypeSymbol, DynamoDbDataMember[]> getDynamoDbProperties, MarshallerOptions options)
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{
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return $"private static class {ClassName}".CreateScope(TypeContent(arguments, getDynamoDbProperties, options));
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}
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}
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private static IEnumerable<string> TypeContent(IEnumerable<DynamoDBMarshallerArguments> arguments, Func<ITypeSymbol, DynamoDbDataMember[]> getDynamoDbProperties, MarshallerOptions options)
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private static IEnumerable<string> TypeContent(DynamoDBMarshallerArguments[] arguments, Func<ITypeSymbol, DynamoDbDataMember[]> getDynamoDbProperties, MarshallerOptions options)
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{
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var hashset = new HashSet<ITypeSymbol>(SymbolEqualityComparer.IncludeNullability);
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@@ -69,8 +68,10 @@ private static IEnumerable<string> TypeContent(IEnumerable<DynamoDBMarshallerArg
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y => CreateMethod(y, getDynamoDbProperties, options),
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hashset
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)
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.Concat(CodeFactory.Create(x.ArgumentType, y => CreateMethod(y, getDynamoDbProperties, options), hashset))
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);
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.Concat(CodeFactory.Create(x.ArgumentType, y => CreateMethod(y, getDynamoDbProperties, options),
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hashset))
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)
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.Concat(KeyMarshaller.CreateKeys(arguments, getDynamoDbProperties, options));
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}
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private static CodeFactory CreateMethod(ITypeSymbol type, Func<ITypeSymbol, DynamoDbDataMember[]> fn, MarshallerOptions options)
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{

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