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Add @Json.ignore (#1417)

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* Default Json.name to an unset value

* Promote shared transient tests to DualKotlinTest

* Add new ignore property to Json

* Support it in ClassJsonAdapter

* Mention no enum/record support

* Support in KotlinJsonAdapter

* Rework code gen API to know of "ignored"

* Support in apt code gen

* Support in KSP

* Update old non-working transient example test

* Synthetic holders

* Use field on both
This commit is contained in:
Zac Sweers
2021-11-08 11:16:57 -05:00
committed by GitHub
parent 48e6dd3f03
commit 954ca46b9e
19 changed files with 317 additions and 108 deletions
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5
adapters/src/main/java/com/squareup/moshi/adapters/EnumJsonAdapter.java
View File

@@ -68,7 +68,10 @@ public final class EnumJsonAdapter<T extends Enum<T>> extends JsonAdapter<T> {
for (int i = 0; i < constants.length; i++) {
String constantName = constants[i].name();
Json annotation = enumType.getField(constantName).getAnnotation(Json.class);
String name = annotation != null ? annotation.name() : constantName;
String name =
annotation != null && !Json.UNSET_NAME.equals(annotation.name())
? annotation.name()
: constantName;
nameStrings[i] = name;
}
options = JsonReader.Options.of(nameStrings);

5
examples/src/main/java/com/squareup/moshi/recipes/FallbackEnum.java
View File

@@ -79,7 +79,10 @@ final class FallbackEnum {
for (int i = 0; i < constants.length; i++) {
T constant = constants[i];
Json annotation = enumType.getField(constant.name()).getAnnotation(Json.class);
String name = annotation != null ? annotation.name() : constant.name();
String name =
annotation != null && !Json.UNSET_NAME.equals(annotation.name())
? annotation.name()
: constant.name();
nameStrings[i] = name;
}
options = JsonReader.Options.of(nameStrings);

1
kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/TargetParameter.kt
View File

@@ -26,5 +26,6 @@ public data class TargetParameter(
val type: TypeName,
val hasDefault: Boolean,
val jsonName: String? = null,
val jsonIgnore: Boolean = false,
val qualifiers: Set<AnnotationSpec>? = null
)

3
kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/TargetProperty.kt
View File

@@ -25,7 +25,8 @@ public data class TargetProperty(
val propertySpec: PropertySpec,
val parameter: TargetParameter?,
val visibility: KModifier,
val jsonName: String?
val jsonName: String?,
val jsonIgnore: Boolean
) {
val name: String get() = propertySpec.name
val type: TypeName get() = propertySpec.type

50
kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/apt/metadata.kt
View File

@@ -64,6 +64,7 @@ import javax.tools.Diagnostic.Kind.WARNING
private val JSON_QUALIFIER = JsonQualifier::class.java
private val JSON = Json::class.asClassName()
private val TRANSIENT = Transient::class.asClassName()
private val OBJECT_CLASS = ClassName("java.lang", "Object")
private val VISIBILITY_MODIFIERS = setOf(
KModifier.INTERNAL,
@@ -95,7 +96,8 @@ internal fun primaryConstructor(
type = parameter.type,
hasDefault = parameter.defaultValue != null,
qualifiers = parameter.annotations.qualifiers(messager, elements),
jsonName = parameter.annotations.jsonName()
jsonName = parameter.annotations.jsonName(),
jsonIgnore = parameter.annotations.jsonIgnore(),
)
}
@@ -386,7 +388,6 @@ private fun declaredProperties(
currentClass: ClassName,
resolvedTypes: List<ResolvedTypeMapping>
): Map<String, TargetProperty> {
val result = mutableMapOf<String, TargetProperty>()
for (initialProperty in kotlinApi.propertySpecs) {
val resolvedType = resolveTypeArgs(
@@ -398,19 +399,22 @@ private fun declaredProperties(
val property = initialProperty.toBuilder(type = resolvedType).build()
val name = property.name
val parameter = constructor.parameters[name]
val isIgnored = property.annotations.any { it.typeName == TRANSIENT } ||
parameter?.jsonIgnore == true ||
property.annotations.jsonIgnore()
result[name] = TargetProperty(
propertySpec = property,
parameter = parameter,
visibility = property.modifiers.visibility(),
jsonName = parameter?.jsonName ?: property.annotations.jsonName()
?: name.escapeDollarSigns()
?: name.escapeDollarSigns(),
jsonIgnore = isIgnored
)
}
return result
}
private val TargetProperty.isTransient get() = propertySpec.annotations.any { it.typeName == Transient::class.asClassName() }
private val TargetProperty.isSettable get() = propertySpec.mutable || parameter != null
private val TargetProperty.isVisible: Boolean
get() {
@@ -429,11 +433,11 @@ internal fun TargetProperty.generator(
elements: Elements,
instantiateAnnotations: Boolean
): PropertyGenerator? {
if (isTransient) {
if (jsonIgnore) {
if (!hasDefault) {
messager.printMessage(
ERROR,
"No default value for transient property $name",
"No default value for transient/ignored property $name",
sourceElement
)
return null
@@ -510,16 +514,36 @@ private fun List<AnnotationSpec>?.qualifiers(
private fun List<AnnotationSpec>?.jsonName(): String? {
if (this == null) return null
return find { it.typeName == JSON }?.let { annotation ->
val mirror = requireNotNull(annotation.tag<AnnotationMirror>()) {
"Could not get the annotation mirror from the annotation spec"
}
mirror.elementValues.entries.single {
it.key.simpleName.contentEquals("name")
}.value.value as String
return filter { it.typeName == JSON }.firstNotNullOfOrNull { annotation ->
annotation.jsonName()
}
}
private fun List<AnnotationSpec>?.jsonIgnore(): Boolean {
if (this == null) return false
return filter { it.typeName == JSON }.firstNotNullOfOrNull { annotation ->
annotation.jsonIgnore()
} ?: false
}
private fun AnnotationSpec.jsonName(): String? {
return elementValue<String>("name").takeUnless { it == Json.UNSET_NAME }
}
private fun AnnotationSpec.jsonIgnore(): Boolean {
return elementValue<Boolean>("ignore") ?: false
}
private fun <T> AnnotationSpec.elementValue(name: String): T? {
val mirror = requireNotNull(tag<AnnotationMirror>()) {
"Could not get the annotation mirror from the annotation spec"
}
@Suppress("UNCHECKED_CAST")
return mirror.elementValues.entries.firstOrNull {
it.key.simpleName.contentEquals(name)
}?.value?.value as? T
}
private fun String.escapeDollarSigns(): String {
return replace("\$", "\${\'\$\'}")
}

6
kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/ksp/MoshiApiUtil.kt
View File

@@ -21,14 +21,12 @@ import com.google.devtools.ksp.symbol.KSClassDeclaration
import com.google.devtools.ksp.symbol.KSDeclaration
import com.squareup.kotlinpoet.AnnotationSpec
import com.squareup.kotlinpoet.KModifier
import com.squareup.kotlinpoet.asClassName
import com.squareup.moshi.JsonQualifier
import com.squareup.moshi.kotlin.codegen.api.DelegateKey
import com.squareup.moshi.kotlin.codegen.api.PropertyGenerator
import com.squareup.moshi.kotlin.codegen.api.TargetProperty
import com.squareup.moshi.kotlin.codegen.api.rawType
private val TargetProperty.isTransient get() = propertySpec.annotations.any { it.typeName == Transient::class.asClassName() }
private val TargetProperty.isSettable get() = propertySpec.mutable || parameter != null
private val TargetProperty.isVisible: Boolean
get() {
@@ -47,10 +45,10 @@ internal fun TargetProperty.generator(
originalType: KSDeclaration,
instantiateAnnotations: Boolean
): PropertyGenerator? {
if (isTransient) {
if (jsonIgnore) {
if (!hasDefault) {
logger.error(
"No default value for transient property $name",
"No default value for transient/ignored property $name",
originalType
)
return null

11
kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/ksp/TargetTypes.kt
View File

@@ -213,7 +213,11 @@ private fun KSAnnotated?.qualifiers(resolver: Resolver): Set<AnnotationSpec> {
}
private fun KSAnnotated?.jsonName(): String? {
return this?.findAnnotationWithType<Json>()?.name
return this?.findAnnotationWithType<Json>()?.name?.takeUnless { it == Json.UNSET_NAME }
}
private fun KSAnnotated?.jsonIgnore(): Boolean {
return this?.findAnnotationWithType<Json>()?.ignore ?: false
}
private fun declaredProperties(
@@ -223,7 +227,6 @@ private fun declaredProperties(
resolver: Resolver,
typeParameterResolver: TypeParameterResolver,
): Map<String, TargetProperty> {
val result = mutableMapOf<String, TargetProperty>()
for (property in classDecl.getDeclaredProperties()) {
val initialType = property.type.resolve()
@@ -235,12 +238,14 @@ private fun declaredProperties(
val propertySpec = property.toPropertySpec(resolver, resolvedType, typeParameterResolver)
val name = propertySpec.name
val parameter = constructor.parameters[name]
val isTransient = property.isAnnotationPresent(Transient::class)
result[name] = TargetProperty(
propertySpec = propertySpec,
parameter = parameter,
visibility = property.getVisibility().toKModifier() ?: KModifier.PUBLIC,
jsonName = parameter?.jsonName ?: property.jsonName()
?: name.escapeDollarSigns()
?: name.escapeDollarSigns(),
jsonIgnore = isTransient || parameter?.jsonIgnore == true || property.jsonIgnore()
)
}

22
kotlin/codegen/src/test/java/com/squareup/moshi/kotlin/codegen/apt/JsonClassCodegenProcessorTest.kt
View File

@@ -334,7 +334,27 @@ class JsonClassCodegenProcessorTest(
)
assertThat(result.exitCode).isEqualTo(KotlinCompilation.ExitCode.COMPILATION_ERROR)
assertThat(result.messages).contains(
"error: No default value for transient property a"
"error: No default value for transient/ignored property a"
)
}
@Test
fun requiredIgnoredConstructorParameterFails() {
val result = compile(
kotlin(
"source.kt",
"""
import com.squareup.moshi.Json
import com.squareup.moshi.JsonClass
@JsonClass(generateAdapter = true)
class RequiredIgnoredConstructorParameter(@Json(ignore = true) var a: Int)
"""
)
)
assertThat(result.exitCode).isEqualTo(KotlinCompilation.ExitCode.COMPILATION_ERROR)
assertThat(result.messages).contains(
"error: No default value for transient/ignored property a"
)
}

23
kotlin/codegen/src/test/java/com/squareup/moshi/kotlin/codegen/ksp/JsonClassSymbolProcessorTest.kt
View File

@@ -357,7 +357,28 @@ class JsonClassSymbolProcessorTest(
)
assertThat(result.exitCode).isEqualTo(KotlinCompilation.ExitCode.COMPILATION_ERROR)
assertThat(result.messages).contains(
"No default value for transient property a"
"No default value for transient/ignored property a"
)
}
@Test
fun requiredIgnoredConstructorParameterFails() {
val result = compile(
kotlin(
"source.kt",
"""
package test
import com.squareup.moshi.Json
import com.squareup.moshi.JsonClass
@JsonClass(generateAdapter = true)
class RequiredTransientConstructorParameter(@Json(ignore = true) var a: Int)
"""
)
)
assertThat(result.exitCode).isEqualTo(KotlinCompilation.ExitCode.COMPILATION_ERROR)
assertThat(result.messages).contains(
"No default value for transient/ignored property a"
)
}

41
kotlin/reflect/src/main/java/com/squareup/moshi/kotlin/reflect/KotlinJsonAdapter.kt
View File

@@ -57,7 +57,7 @@ private val ABSENT_VALUE = Any()
internal class KotlinJsonAdapter<T>(
val constructor: KFunction<T>,
val allBindings: List<Binding<T, Any?>?>,
val nonTransientBindings: List<Binding<T, Any?>>,
val nonIgnoredBindings: List<Binding<T, Any?>>,
val options: JsonReader.Options
) : JsonAdapter<T>() {
@@ -74,7 +74,7 @@ internal class KotlinJsonAdapter<T>(
reader.skipValue()
continue
}
val binding = nonTransientBindings[index]
val binding = nonIgnoredBindings[index]
val propertyIndex = binding.propertyIndex
if (values[propertyIndex] !== ABSENT_VALUE) {
@@ -235,11 +235,27 @@ public class KotlinJsonAdapterFactory : JsonAdapter.Factory {
for (property in rawTypeKotlin.memberProperties) {
val parameter = parametersByName[property.name]
property.isAccessible = true
var jsonAnnotation = property.findAnnotation<Json>()
val allAnnotations = property.annotations.toMutableList()
if (parameter != null) {
allAnnotations += parameter.annotations
if (jsonAnnotation == null) {
jsonAnnotation = parameter.findAnnotation()
}
}
if (Modifier.isTransient(property.javaField?.modifiers ?: 0)) {
require(parameter == null || parameter.isOptional) {
"No default value for transient constructor $parameter"
}
continue
} else if (jsonAnnotation?.ignore == true) {
require(parameter == null || parameter.isOptional) {
"No default value for ignored constructor $parameter"
}
continue
}
require(parameter == null || parameter.type == property.returnType) {
@@ -248,18 +264,7 @@ public class KotlinJsonAdapterFactory : JsonAdapter.Factory {
if (property !is KMutableProperty1 && parameter == null) continue
property.isAccessible = true
val allAnnotations = property.annotations.toMutableList()
var jsonAnnotation = property.findAnnotation<Json>()
if (parameter != null) {
allAnnotations += parameter.annotations
if (jsonAnnotation == null) {
jsonAnnotation = parameter.findAnnotation()
}
}
val name = jsonAnnotation?.name ?: property.name
val name = jsonAnnotation?.name?.takeUnless { it == Json.UNSET_NAME } ?: property.name
val propertyType = when (val propertyTypeClassifier = property.returnType.classifier) {
is KClass<*> -> {
if (propertyTypeClassifier.isValue) {
@@ -294,7 +299,7 @@ public class KotlinJsonAdapterFactory : JsonAdapter.Factory {
@Suppress("UNCHECKED_CAST")
bindingsByName[property.name] = KotlinJsonAdapter.Binding(
name,
jsonAnnotation?.name ?: name,
jsonAnnotation?.name?.takeUnless { it == Json.UNSET_NAME } ?: name,
adapter,
property as KProperty1<Any, Any?>,
parameter,
@@ -317,8 +322,8 @@ public class KotlinJsonAdapterFactory : JsonAdapter.Factory {
bindings += bindingByName.value.copy(propertyIndex = index++)
}
val nonTransientBindings = bindings.filterNotNull()
val options = JsonReader.Options.of(*nonTransientBindings.map { it.name }.toTypedArray())
return KotlinJsonAdapter(constructor, bindings, nonTransientBindings, options).nullSafe()
val nonIgnoredBindings = bindings.filterNotNull()
val options = JsonReader.Options.of(*nonIgnoredBindings.map { it.name }.toTypedArray())
return KotlinJsonAdapter(constructor, bindings, nonIgnoredBindings, options).nullSafe()
}
}

4
kotlin/tests/extra-moshi-test-module/build.gradle.kts
View File

@@ -17,3 +17,7 @@
plugins {
kotlin("jvm")
}
dependencies {
implementation(project(":moshi"))
}

14
kotlin/tests/extra-moshi-test-module/src/main/kotlin/com/squareup/moshi/kotlin/codegen/test/extra/AbstractClassInModuleA.kt
View File

@@ -15,10 +15,14 @@
*/
package com.squareup.moshi.kotlin.codegen.test.extra
import com.squareup.moshi.Json
public abstract class AbstractClassInModuleA {
// Transients to ensure processor sees them across module boundaries since @Transient is
// SOURCE-only
// TODO uncomment these when https://github.com/google/ksp/issues/710 is fixed
// @Transient private lateinit var lateinitTransient: String
// @Transient private var regularTransient: String = "regularTransient"
// Ignored to ensure processor sees them across module boundaries.
// @Transient doesn't work for this case because it's source-only and jvm modifiers aren't currently visible in KSP.
// Note that we target the field because otherwise it is stored on the synthetic holder method for
// annotations, which isn't visible from kapt
@field:Json(ignore = true) private lateinit var lateinitIgnored: String
@field:Json(ignore = true) private var regularIgnored: String = "regularIgnored"
}

118
kotlin/tests/src/test/kotlin/com/squareup/moshi/kotlin/DualKotlinTest.kt
View File

@@ -625,6 +625,124 @@ class DualKotlinTest {
data class IntersectionTypes<E>(
val value: E
) where E : Enum<E>, E : IntersectionTypeInterface<E>
@Test fun transientConstructorParameter() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<TransientConstructorParameter>()
val encoded = TransientConstructorParameter(3, 5)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
}
class TransientConstructorParameter(@Transient var a: Int = -1, var b: Int = -1)
@Test fun multipleTransientConstructorParameters() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter(MultipleTransientConstructorParameters::class.java)
val encoded = MultipleTransientConstructorParameters(3, 5, 7)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
assertThat(decoded.c).isEqualTo(-1)
}
class MultipleTransientConstructorParameters(@Transient var a: Int = -1, var b: Int = -1, @Transient var c: Int = -1)
@Test fun transientProperty() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<TransientProperty>()
val encoded = TransientProperty()
encoded.a = 3
encoded.setB(4)
encoded.c = 5
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"c":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":5,"c":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.getB()).isEqualTo(-1)
assertThat(decoded.c).isEqualTo(6)
}
class TransientProperty {
@Transient var a: Int = -1
@Transient private var b: Int = -1
var c: Int = -1
fun getB() = b
fun setB(b: Int) {
this.b = b
}
}
@Test fun ignoredConstructorParameter() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<IgnoredConstructorParameter>()
val encoded = IgnoredConstructorParameter(3, 5)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
}
class IgnoredConstructorParameter(@Json(ignore = true) var a: Int = -1, var b: Int = -1)
@Test fun multipleIgnoredConstructorParameters() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter(MultipleIgnoredConstructorParameters::class.java)
val encoded = MultipleIgnoredConstructorParameters(3, 5, 7)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
assertThat(decoded.c).isEqualTo(-1)
}
class MultipleIgnoredConstructorParameters(
@Json(ignore = true) var a: Int = -1,
var b: Int = -1,
@Json(ignore = true) var c: Int = -1
)
@Test fun ignoredProperty() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<IgnoredProperty>()
val encoded = IgnoredProperty()
encoded.a = 3
encoded.setB(4)
encoded.c = 5
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"c":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":5,"c":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.getB()).isEqualTo(-1)
assertThat(decoded.c).isEqualTo(6)
}
class IgnoredProperty {
@Json(ignore = true) var a: Int = -1
@Json(ignore = true) private var b: Int = -1
var c: Int = -1
fun getB() = b
fun setB(b: Int) {
this.b = b
}
}
}
typealias TypeAlias = Int

65
kotlin/tests/src/test/kotlin/com/squareup/moshi/kotlin/reflect/KotlinJsonAdapterTest.kt
View File

@@ -278,35 +278,6 @@ class KotlinJsonAdapterTest {
var b: Int = -1
}
@Test fun transientConstructorParameter() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<TransientConstructorParameter>()
val encoded = TransientConstructorParameter(3, 5)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
}
class TransientConstructorParameter(@Transient var a: Int = -1, var b: Int = -1)
@Test fun multipleTransientConstructorParameters() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter(MultipleTransientConstructorParameters::class.java)
val encoded = MultipleTransientConstructorParameters(3, 5, 7)
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"b":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.b).isEqualTo(6)
assertThat(decoded.c).isEqualTo(-1)
}
class MultipleTransientConstructorParameters(@Transient var a: Int = -1, var b: Int = -1, @Transient var c: Int = -1)
@Test fun requiredTransientConstructorParameterFails() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
try {
@@ -323,34 +294,22 @@ class KotlinJsonAdapterTest {
class RequiredTransientConstructorParameter(@Transient var a: Int)
@Test fun transientProperty() {
@Test fun requiredIgnoredConstructorParameterFails() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
val jsonAdapter = moshi.adapter<TransientProperty>()
val encoded = TransientProperty()
encoded.a = 3
encoded.setB(4)
encoded.c = 5
assertThat(jsonAdapter.toJson(encoded)).isEqualTo("""{"c":5}""")
val decoded = jsonAdapter.fromJson("""{"a":4,"b":5,"c":6}""")!!
assertThat(decoded.a).isEqualTo(-1)
assertThat(decoded.getB()).isEqualTo(-1)
assertThat(decoded.c).isEqualTo(6)
}
class TransientProperty {
@Transient var a: Int = -1
@Transient private var b: Int = -1
var c: Int = -1
fun getB() = b
fun setB(b: Int) {
this.b = b
try {
moshi.adapter<RequiredIgnoredConstructorParameter>()
fail()
} catch (expected: IllegalArgumentException) {
assertThat(expected).hasMessageThat().isEqualTo(
"No default value for ignored constructor parameter #0 " +
"a of fun <init>(kotlin.Int): " +
"com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterTest.RequiredIgnoredConstructorParameter"
)
}
}
class RequiredIgnoredConstructorParameter(@Json(ignore = true) var a: Int)
@Test fun constructorParametersAndPropertiesWithSameNamesMustHaveSameTypes() {
val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
try {

8
moshi/src/main/java/com/squareup/moshi/ClassJsonAdapter.java
View File

@@ -134,6 +134,8 @@ final class ClassJsonAdapter<T> extends JsonAdapter<T> {
boolean platformType = Util.isPlatformType(rawType);
for (Field field : rawType.getDeclaredFields()) {
if (!includeField(platformType, field.getModifiers())) continue;
Json jsonAnnotation = field.getAnnotation(Json.class);
if (jsonAnnotation != null && jsonAnnotation.ignore()) continue;
// Look up a type adapter for this type.
Type fieldType = resolve(type, rawType, field.getGenericType());
@@ -145,8 +147,10 @@ final class ClassJsonAdapter<T> extends JsonAdapter<T> {
field.setAccessible(true);
// Store it using the field's name. If there was already a field with this name, fail!
Json jsonAnnotation = field.getAnnotation(Json.class);
String name = jsonAnnotation != null ? jsonAnnotation.name() : fieldName;
String name =
jsonAnnotation != null && !Json.UNSET_NAME.equals(jsonAnnotation.name())
? jsonAnnotation.name()
: fieldName;
FieldBinding<Object> fieldBinding = new FieldBinding<>(name, field, adapter);
FieldBinding<?> replaced = fieldBindings.put(name, fieldBinding);
if (replaced != null) {

19
moshi/src/main/java/com/squareup/moshi/Json.java
View File

@@ -29,8 +29,9 @@ import java.lang.annotation.Target;
*
* <ul>
* <li><strong>Java class fields</strong>
* <li><strong>Kotlin properties</strong> for use with {@code moshi-kotlin}. This includes both
* properties declared in the constructor and properties declared as members.
* <li><strong>Kotlin properties</strong> for use with {@code moshi-kotlin} or {@code
* moshi-kotlin-codegen}. This includes both properties declared in the constructor and
* properties declared as members.
* </ul>
*
* <p>Users of the <a href="https://github.com/rharter/auto-value-moshi">AutoValue: Moshi
@@ -39,5 +40,17 @@ import java.lang.annotation.Target;
@Retention(RUNTIME)
@Documented
public @interface Json {
String name();
/** The default value of {@link #name()}. Should only be used to check if it's been set. */
String UNSET_NAME = "\u0000";
/** The name of the field when encoded as JSON. */
String name() default UNSET_NAME;
/**
* If true, this field/property will be ignored. This is semantically similar to use of {@code
* transient} on the JVM.
*
* <p><strong>Note:</strong> this has no effect in enums or record classes.
*/
boolean ignore() default false;
}

5
moshi/src/main/java/com/squareup/moshi/StandardJsonAdapters.java
View File

@@ -275,7 +275,10 @@ final class StandardJsonAdapters {
for (int i = 0; i < constants.length; i++) {
T constant = constants[i];
Json annotation = enumType.getField(constant.name()).getAnnotation(Json.class);
String name = annotation != null ? annotation.name() : constant.name();
String name =
annotation != null && !Json.UNSET_NAME.equals(annotation.name())
? annotation.name()
: constant.name();
nameStrings[i] = name;
}
options = JsonReader.Options.of(nameStrings);

5
moshi/src/main/java16/com/squareup/moshi/RecordJsonAdapter.java
View File

@@ -91,7 +91,10 @@ final class RecordJsonAdapter<T> extends JsonAdapter<T> {
Set<Annotation> qualifiers = null;
for (var annotation : component.getDeclaredAnnotations()) {
if (annotation instanceof Json jsonAnnotation) {
jsonName = jsonAnnotation.name();
var annotationName = jsonAnnotation.name();
if (!Json.UNSET_NAME.equals(annotationName)) {
jsonName = jsonAnnotation.name();
}
} else {
if (annotation.annotationType().isAnnotationPresent(JsonQualifier.class)) {
if (qualifiers == null) {

20
moshi/src/test/java/com/squareup/moshi/ClassJsonAdapterTest.java
View File

@@ -153,6 +153,26 @@ public final class ClassJsonAdapterTest {
assertThat(fromJson.b).isEqualTo(12);
}
static class IgnoredFields {
@Json(ignore = true)
int a;
int b;
}
@Test
public void ignoredFieldsOmitted() throws Exception {
IgnoredFields value = new IgnoredFields();
value.a = 11;
value.b = 12;
String toJson = toJson(IgnoredFields.class, value);
assertThat(toJson).isEqualTo("{\"b\":12}");
IgnoredFields fromJson = fromJson(IgnoredFields.class, "{\"a\":13,\"b\":12}");
assertThat(fromJson.a).isEqualTo(0); // Not assigned.
assertThat(fromJson.b).isEqualTo(12);
}
static class BaseA {
int a;
}