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Optimize singleton nullables

This commit is contained in:
Andrea Cavalli 2022-02-20 18:20:05 +01:00
parent 5f29fbafa2
commit 2c9e69dba2
2 changed files with 24 additions and 7 deletions
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2
pom.xml
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@ -245,7 +245,7 @@
<dependency>
<groupId>it.cavallium</groupId>
<artifactId>data-generator-runtime</artifactId>
<version>[1.0.32,)</version>
<version>1.0.44</version>
</dependency>
</dependencies>
</dependencyManagement>

29
src/main/java/it/cavallium/data/generator/SourcesGenerator.java
View File

@ -874,6 +874,9 @@ public class SourcesGenerator {
"INullableIType"
));
nullableTypeClass.addSuperinterface(IGenericNullable.class);
var nullInstance = FieldSpec.builder(nullableTypeType, "NULL", Modifier.PRIVATE, Modifier.STATIC, Modifier.FINAL);
nullInstance.initializer("new $T(null)", nullableTypeType);
nullableTypeClass.addField(nullInstance.build());
var valueField = ParameterSpec.builder(typeType, "value");
nullableTypeClass.addRecordComponent(valueField.build());
var ofMethod = MethodSpec.methodBuilder("of");
@ -883,10 +886,10 @@ public class SourcesGenerator {
ofMethod.addException(NullPointerException.class);
ofMethod.returns(nullableClassType);
ofMethod.addParameter(ParameterSpec.builder(typeType, "value").build());
ofMethod.beginControlFlow("if (value == null)");
ofMethod.addStatement("throw new $T()", NullPointerException.class);
ofMethod.nextControlFlow("else");
ofMethod.beginControlFlow("if (value != null)");
ofMethod.addStatement("return new $T(value)", nullableTypeType);
ofMethod.nextControlFlow("else");
ofMethod.addStatement("throw new $T()", NullPointerException.class);
ofMethod.endControlFlow();
nullableTypeClass.addMethod(ofMethod.build());
var ofNullableMethod = MethodSpec.methodBuilder("ofNullable");
@ -895,14 +898,18 @@ public class SourcesGenerator {
ofNullableMethod.addModifiers(Modifier.FINAL);
ofNullableMethod.returns(nullableClassType);
ofNullableMethod.addParameter(ParameterSpec.builder(typeType, "value").build());
ofNullableMethod.beginControlFlow("if (value != null)");
ofNullableMethod.addStatement("return new $T(value)", nullableTypeType);
ofNullableMethod.nextControlFlow("else");
ofNullableMethod.addStatement("return NULL");
ofNullableMethod.endControlFlow();
nullableTypeClass.addMethod(ofNullableMethod.build());
var emptyMethod = MethodSpec.methodBuilder("empty");
emptyMethod.addModifiers(Modifier.PUBLIC);
emptyMethod.addModifiers(Modifier.STATIC);
emptyMethod.addModifiers(Modifier.FINAL);
emptyMethod.returns(nullableClassType);
emptyMethod.addStatement("return new $T(null)", nullableTypeType);
emptyMethod.addStatement("return NULL");
nullableTypeClass.addMethod(emptyMethod.build());
var isEmptyMethod = MethodSpec.methodBuilder("isEmpty");
isEmptyMethod.addModifiers(Modifier.PUBLIC);
@ -1340,6 +1347,7 @@ public class SourcesGenerator {
.getData()
.get(newDataTransformation.to);
TypeName newType = nextVersionTypeTypes.get(newTypeName);
Objects.requireNonNull(newType, () -> "Type \"" + newTypeName + "\" is not present from next version " + version + " to version " + nextVersion.get() + " in upgrader " + newDataTransformation.transformClass + "." + newDataTransformation.to);
TypeName newTypeBoxed = newType.isPrimitive() ? newType.box() : newType;
{
currentVarNumber.addTo(newDataTransformation.to, 1);
@ -2237,8 +2245,17 @@ public class SourcesGenerator {
returnOfNewInstanceStamentBuilder.add(")");
}
}
mapConstructor.addStatement(returnMapNewInstanceStamentBuilder.add(")").build());
ofConstructor.addStatement(returnOfNewInstanceStamentBuilder.add(")").build());
if (first) {
typeClass.addField(FieldSpec
.builder(typeTypes.get(type), "INSTANCE", Modifier.PRIVATE, Modifier.STATIC, Modifier.FINAL)
.initializer("new $T()", typeTypes.get(type))
.build());
mapConstructor.addStatement("return INSTANCE");
ofConstructor.addStatement("return INSTANCE");
} else {
mapConstructor.addStatement(returnMapNewInstanceStamentBuilder.add(")").build());
ofConstructor.addStatement(returnOfNewInstanceStamentBuilder.add(")").build());
}
typeClass.addMethod(mapConstructor.build());
typeClass.addMethod(ofConstructor.build());