1 files changed, 76 insertions, 0 deletions
diff --git a/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/synthetic/KSValueParameterSyntheticImpl.kt b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/synthetic/KSValueParameterSyntheticImpl.kt
new file mode 100644
index 00000000..6e5692b2
--- /dev/null
+++ b/compiler-plugin/src/main/kotlin/com/google/devtools/ksp/symbol/impl/synthetic/KSValueParameterSyntheticImpl.kt
@@ -0,0 +1,76 @@
+package com.google.devtools.ksp.symbol.impl.synthetic
+
+import com.google.devtools.ksp.ExceptionMessage
+import com.google.devtools.ksp.KSObjectCache
+import com.google.devtools.ksp.processing.impl.KSNameImpl
+import com.google.devtools.ksp.processing.impl.findAnnotationFromUseSiteTarget
+import com.google.devtools.ksp.symbol.KSAnnotated
+import com.google.devtools.ksp.symbol.KSAnnotation
+import com.google.devtools.ksp.symbol.KSName
+import com.google.devtools.ksp.symbol.KSNode
+import com.google.devtools.ksp.symbol.KSTypeReference
+import com.google.devtools.ksp.symbol.KSValueParameter
+import com.google.devtools.ksp.symbol.KSVisitor
+import com.google.devtools.ksp.symbol.Location
+import com.google.devtools.ksp.symbol.NonExistLocation
+import com.google.devtools.ksp.symbol.Origin
+import com.google.devtools.ksp.symbol.impl.binary.KSAnnotationDescriptorImpl
+import com.google.devtools.ksp.symbol.impl.binary.KSTypeReferenceDescriptorImpl
+import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
+import org.jetbrains.kotlin.resolve.calls.components.hasDefaultValue
+import org.jetbrains.kotlin.resolve.calls.components.isVararg
+
+class KSValueParameterSyntheticImpl(val owner: KSAnnotated?, resolve: () -> ValueParameterDescriptor?) :
+    KSValueParameter {
+
+    companion object :
+        KSObjectCache<Pair<KSAnnotated?, () -> ValueParameterDescriptor?>, KSValueParameterSyntheticImpl>() {
+        fun getCached(owner: KSAnnotated? = null, resolve: () -> ValueParameterDescriptor?) =
+            KSValueParameterSyntheticImpl.cache.getOrPut(Pair(owner, resolve)) {
+                KSValueParameterSyntheticImpl(owner, resolve)
+            }
+    }
+
+    private val descriptor by lazy {
+        resolve() ?: throw IllegalStateException("Failed to resolve for synthetic value parameter, $ExceptionMessage")
+    }
+
+    override val name: KSName? by lazy {
+        KSNameImpl.getCached(descriptor.name.asString())
+    }
+
+    override val type: KSTypeReference by lazy {
+        KSTypeReferenceDescriptorImpl.getCached(descriptor.type, origin, this)
+    }
+
+    override val isVararg: Boolean = descriptor.isVararg
+
+    override val isNoInline: Boolean = descriptor.isNoinline
+
+    override val isCrossInline: Boolean = descriptor.isCrossinline
+
+    override val isVal: Boolean = !descriptor.isVar
+
+    override val isVar: Boolean = descriptor.isVar
+
+    override val hasDefault: Boolean = descriptor.hasDefaultValue()
+
+    override val annotations: Sequence<KSAnnotation> by lazy {
+        descriptor.annotations.asSequence()
+            .map { KSAnnotationDescriptorImpl.getCached(it, this) }.plus(this.findAnnotationFromUseSiteTarget())
+    }
+
+    override val origin: Origin = Origin.SYNTHETIC
+
+    override val location: Location = NonExistLocation
+
+    override val parent: KSNode? = owner
+
+    override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
+        return visitor.visitValueParameter(this, data)
+    }
+
+    override fun toString(): String {
+        return name?.asString() ?: "_"
+    }
+}