Attribute serialization

README.md

@@ -1,13 +1,63 @@
+# Maps-kt
+
 This repository is a work-in-progress implementation of Map-with-markers component for Compose-Multiplatform
 
-## [maps-kt-core](maps-kt-core)
-A multiplatform coordinates representation and conversion.
+![](docs/images/Screenshot%202023-01-12%20110429.png)
 
-## [maps-kt-compose](maps-kt-compose)
-A compose multiplatform (currently desktop only, contributions of android target are welcome) implementation of a map component, features and builder.
+## Modules
 
-## [maps-kt-scheme](maps-kt-scheme)
-An alternative component used for the same functionality on 2D schemes. Not all features from maps could be ported because it requires some code duplication (ideas for common API are welcome).
 
-## [demo](demo)
-Demonstration projects for different features
+### [demo](demo)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [maps-kt-compose](maps-kt-compose)
+> Compose-multiplaform implementation for web-mercator tiled maps
+>
+> **Maturity**: DEVELOPMENT
+>
+> **Features:**
+> - [osm](maps-kt-compose/#) : OpenStreetMap tile provider.
+
+
+### [maps-kt-core](maps-kt-core)
+> Core cartography, UI-agnostic
+>
+> **Maturity**: DEVELOPMENT
+>
+> **Features:**
+> - [angles and distances](maps-kt-core/#) : Type-safe angle and distance measurements.
+> - [ellipsoid](maps-kt-core/#) : Ellipsoid geometry and distances
+> - [mercator](maps-kt-core/#) : Mercator and web-mercator projections
+
+
+### [maps-kt-features](maps-kt-features)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [maps-kt-geojson](maps-kt-geojson)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [maps-kt-scheme](maps-kt-scheme)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [maps](demo/maps)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [polygon-editor](demo/polygon-editor)
+> 
+>
+> **Maturity**: EXPERIMENTAL
+
+### [scheme](demo/scheme)
+> 
+>
+> **Maturity**: EXPERIMENTAL

build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
 
 allprojects {
     group = "center.sciprog"
-    version = "0.2.1-dev-1"
+    version = "0.2.1-dev-2"
 }
 
 apiValidation{
@@ -41,5 +41,7 @@ subprojects {
     }
 }
 
+readme.readmeTemplate = file("docs/templates/README-TEMPLATE.md")
+
 
 

demo/README.md

@@ -0,0 +1,4 @@
+# Module demo
+
+
+

demo/maps/README.md

@@ -0,0 +1,4 @@
+# Module maps
+
+
+

demo/polygon-editor/README.md

@@ -0,0 +1,4 @@
+# Module polygon-editor
+
+
+

demo/scheme/README.md

@@ -0,0 +1,4 @@
+# Module scheme
+
+
+

docs/templates/ARTIFACT-TEMPLATE.md

@@ -0,0 +1,17 @@
+## Artifact:
+
+The Maven coordinates of this project are `${group}:${name}:${version}`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+    // development and snapshot versions
+    maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+}
+
+dependencies {
+    implementation("${group}:${name}:${version}")
+}
+```

docs/templates/README-TEMPLATE.md

@@ -0,0 +1,9 @@
+# Maps-kt
+
+This repository is a work-in-progress implementation of Map-with-markers component for Compose-Multiplatform
+
+![](docs/images/Screenshot%202023-01-12%20110429.png)
+
+## Modules
+
+${modules}

maps-kt-compose/README.md

@@ -0,0 +1,33 @@
+# Module kmath-core
+
+The core interfaces of KMath.
+
+ - [osm](#) : OpenStreetMap tile provider.
+
+
+## Artifact:
+
+The Maven coordinates of this project are `center.sciprog:maps-kt-compose:0.2.1-dev-2`.
+
+**Gradle Groovy:**
+```groovy
+repositories {
+    maven { url 'https://repo.kotlin.link' }
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'center.sciprog:maps-kt-compose:0.2.1-dev-2'
+}
+```
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("center.sciprog:maps-kt-compose:0.2.1-dev-2")
+}
+```

maps-kt-compose/build.gradle.kts

@@ -46,4 +46,14 @@ java {
 
 tasks.withType<Test> {
     useJUnitPlatform()
+}
+
+readme {
+    description = "Compose-multiplaform implementation for web-mercator tiled maps"
+    maturity = space.kscience.gradle.Maturity.EXPERIMENTAL
+    propertyByTemplate("artifact", rootProject.file("docs/templates/ARTIFACT-TEMPLATE.md"))
+
+    feature(
+        id = "osm",
+    ) { "OpenStreetMap tile provider." }
 }

maps-kt-compose/docs/README-TEMPLATE.md

@@ -0,0 +1,7 @@
+# Module kmath-core
+
+The core interfaces of KMath.
+
+${features}
+
+${artifact}

maps-kt-core/README.md

@@ -0,0 +1,35 @@
+# Module kmath-core
+
+The core interfaces of KMath.
+
+ - [angles and distances](#) : Type-safe angle and distance measurements.
+ - [ellipsoid](#) : Ellipsoid geometry and distances
+ - [mercator](#) : Mercator and web-mercator projections
+
+
+## Artifact:
+
+The Maven coordinates of this project are `center.sciprog:maps-kt-core:0.2.1-dev-2`.
+
+**Gradle Groovy:**
+```groovy
+repositories {
+    maven { url 'https://repo.kotlin.link' }
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'center.sciprog:maps-kt-core:0.2.1-dev-2'
+}
+```
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("center.sciprog:maps-kt-core:0.2.1-dev-2")
+}
+```

maps-kt-core/build.gradle.kts

@@ -1,4 +1,22 @@
 plugins {
     id("space.kscience.gradle.mpp")
     `maven-publish`
+}
+
+readme {
+    description = "Core cartography, UI-agnostic"
+    maturity = space.kscience.gradle.Maturity.DEVELOPMENT
+    propertyByTemplate("artifact", rootProject.file("docs/templates/ARTIFACT-TEMPLATE.md"))
+
+    feature(
+        id = "angles and distances",
+    ) { "Type-safe angle and distance measurements." }
+
+    feature(
+        id = "ellipsoid",
+    ) { "Ellipsoid geometry and distances" }
+
+    feature(
+        id = "mercator",
+    ) { "Mercator and web-mercator projections" }
 }

maps-kt-core/docs/README-TEMPLATE.md

@@ -0,0 +1,7 @@
+# Module kmath-core
+
+The core interfaces of KMath.
+
+${features}
+
+${artifact}

maps-kt-features/README.md

@@ -0,0 +1,32 @@
+# Module maps-kt-features
+
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `center.sciprog:maps-kt-features:0.2.1-dev-2`.
+
+**Gradle Groovy:**
+```groovy
+repositories {
+    maven { url 'https://repo.kotlin.link' }
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'center.sciprog:maps-kt-features:0.2.1-dev-2'
+}
+```
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("center.sciprog:maps-kt-features:0.2.1-dev-2")
+}
+```

maps-kt-features/build.gradle.kts

@@ -12,4 +12,10 @@ kotlin {
             }
         }
     }
+}
+
+kscience{
+    useSerialization{
+        json()
+    }
 }

maps-kt-features/src/commonMain/kotlin/center.sciprog.attributes/Attribute.kt

@@ -1,8 +1,20 @@
 package center.sciprog.attributes
 
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.builtins.serializer
+
 public interface Attribute<T>
 
+public abstract class SerializableAttribute<T>(
+    public val serialId: String,
+    public val serializer: KSerializer<T>,
+) : Attribute<T>
+
+public interface AttributeWithDefault<T> : Attribute<T> {
+    public val default: T
+}
+
 public interface SetAttribute<V> : Attribute<Set<V>>
 
-public object NameAttribute : Attribute<String>
+public object NameAttribute : SerializableAttribute<String>("name", String.serializer())
 

maps-kt-features/src/commonMain/kotlin/center.sciprog.attributes/Attributes.kt

@@ -5,27 +5,30 @@ import center.sciprog.maps.features.ZAttribute
 import kotlin.jvm.JvmInline
 
 @JvmInline
-public value class Attributes internal constructor(internal val map: Map<Attribute<*>, Any>) {
+public value class Attributes internal constructor(public val content: Map<out Attribute<*>, Any>) {
+
+    public val keys: Set<Attribute<*>> get() = content.keys
+
     @Suppress("UNCHECKED_CAST")
-    public operator fun <T> get(attribute: Attribute<T>): T? = map[attribute] as? T
+    public operator fun <T> get(attribute: Attribute<T>): T? = content[attribute] as? T
 
-//    public operator fun <T> Attribute<T>.invoke(value: T?): Attributes = withAttribute(this, value)
-
-    override fun toString(): String = "Attributes(value=${map.entries})"
+    override fun toString(): String = "Attributes(value=${content.entries})"
 
     public companion object {
         public val EMPTY: Attributes = Attributes(emptyMap())
     }
 }
 
+public fun <T> Attributes.getOrDefault(attribute: AttributeWithDefault<T>): T = get(attribute) ?: attribute.default
+
 public fun <T, A : Attribute<T>> Attributes.withAttribute(
     attribute: A,
     attrValue: T?,
 ): Attributes = Attributes(
     if (attrValue == null) {
-        map - attribute
+        content - attribute
     } else {
-        map + (attribute to attrValue)
+        content + (attribute to attrValue)
     }
 )
 
@@ -38,7 +41,7 @@ public fun <T, A : SetAttribute<T>> Attributes.withAttributeElement(
 ): Attributes {
     val currentSet: Set<T> = get(attribute) ?: emptySet()
     return Attributes(
-        map + (attribute to (currentSet + attrValue))
+        content + (attribute to (currentSet + attrValue))
     )
 }
 
@@ -51,7 +54,7 @@ public fun <T, A : SetAttribute<T>> Attributes.withoutAttributeElement(
 ): Attributes {
     val currentSet: Set<T> = get(attribute) ?: emptySet()
     return Attributes(
-        map + (attribute to (currentSet - attrValue))
+        content + (attribute to (currentSet - attrValue))
     )
 }
 
@@ -60,7 +63,7 @@ public fun <T : Any, A : Attribute<T>> Attributes(
     attrValue: T,
 ): Attributes = Attributes(mapOf(attribute to attrValue))
 
-public operator fun Attributes.plus(other: Attributes): Attributes = Attributes(map + other.map)
+public operator fun Attributes.plus(other: Attributes): Attributes = Attributes(content + other.content)
 
 public val Feature<*>.z: Float
     get() = attributes[ZAttribute] ?: 0f

maps-kt-features/src/commonMain/kotlin/center.sciprog.attributes/AttributesBuilder.kt

@@ -17,7 +17,7 @@ public class AttributesBuilder internal constructor(private val map: MutableMap<
     }
 
     public fun from(attributes: Attributes) {
-        map.putAll(attributes.map)
+        map.putAll(attributes.content)
     }
 
     public fun <V> SetAttribute<V>.add(
@@ -42,4 +42,6 @@ public class AttributesBuilder internal constructor(private val map: MutableMap<
 
 public fun AttributesBuilder(
     attributes: Attributes,
-): AttributesBuilder = AttributesBuilder(attributes.map.toMutableMap())
+): AttributesBuilder = AttributesBuilder(attributes.content.toMutableMap())
+
+public fun Attributes(builder: AttributesBuilder.() -> Unit): Attributes = AttributesBuilder().apply(builder).build()

maps-kt-features/src/commonMain/kotlin/center.sciprog.attributes/AttributesSerializer.kt

@@ -0,0 +1,44 @@
+@file:Suppress("UNCHECKED_CAST")
+
+package center.sciprog.attributes
+
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.buildJsonObject
+
+public class AttributesSerializer(
+    private val serializableAttributes: Set<SerializableAttribute<*>>,
+) : KSerializer<Attributes> {
+    private val jsonSerializer = JsonObject.serializer()
+    override val descriptor: SerialDescriptor get() = jsonSerializer.descriptor
+
+    override fun deserialize(decoder: Decoder): Attributes {
+        val jsonElement = jsonSerializer.deserialize(decoder)
+        val attributeMap: Map<SerializableAttribute<*>, Any> = jsonElement.entries.associate { (key, element) ->
+            val attr = serializableAttributes.find { it.serialId == key }
+                ?: error("Attribute serializer for key $key not found")
+            val value = Json.decodeFromJsonElement(attr.serializer, element) ?: error("Null values are not allowed")
+
+            attr to value
+        }
+        return Attributes(attributeMap)
+    }
+
+    override fun serialize(encoder: Encoder, value: Attributes) {
+        val json = buildJsonObject {
+            value.content.forEach { (key, value) ->
+                if (key !in serializableAttributes) error("An attribute key $key is not in the list of allowed attributes for this serializer")
+                val serializableKey = key as SerializableAttribute
+                put(
+                    serializableKey.serialId,
+                    Json.encodeToJsonElement(serializableKey.serializer as KSerializer<Any>, value)
+                )
+            }
+        }
+        jsonSerializer.serialize(encoder, json)
+    }
+}

maps-kt-features/src/commonTest/kotlin/center/sciprog/attributes/AttributesSerializationTest.kt

@@ -0,0 +1,29 @@
+package center.sciprog.attributes
+
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.serializer
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+internal class AttributesSerializationTest {
+
+    internal object TestAttribute : SerializableAttribute<Map<String, String>>("test", serializer())
+
+    @Test
+    fun restore() {
+        val serializer = AttributesSerializer(setOf(NameAttribute, TestAttribute))
+
+
+        val attributes = Attributes {
+            NameAttribute("myTest")
+            TestAttribute(mapOf("a" to "aa", "b" to "bb"))
+        }
+
+        val serialized = Json.encodeToString(serializer, attributes)
+        println(serialized)
+
+        val restored = Json.decodeFromString(serializer, serialized)
+
+        assertEquals(attributes, restored)
+    }
+}

maps-kt-geojson/README.md

@@ -0,0 +1,32 @@
+# Module maps-kt-geojson
+
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `center.sciprog:maps-kt-geojson:0.2.1-dev-2`.
+
+**Gradle Groovy:**
+```groovy
+repositories {
+    maven { url 'https://repo.kotlin.link' }
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'center.sciprog:maps-kt-geojson:0.2.1-dev-2'
+}
+```
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("center.sciprog:maps-kt-geojson:0.2.1-dev-2")
+}
+```

maps-kt-scheme/README.md

@@ -0,0 +1,32 @@
+# Module maps-kt-scheme
+
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `center.sciprog:maps-kt-scheme:0.2.1-dev-2`.
+
+**Gradle Groovy:**
+```groovy
+repositories {
+    maven { url 'https://repo.kotlin.link' }
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'center.sciprog:maps-kt-scheme:0.2.1-dev-2'
+}
+```
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("center.sciprog:maps-kt-scheme:0.2.1-dev-2")
+}
+```