Increase max json nesting to 256

apollo-api/src/commonMain/kotlin/com/apollographql/apollo3/api/internal/json/BufferedSinkJsonWriter.kt

@@ -17,6 +17,7 @@ package com.apollographql.apollo3.api.internal.json
 
 import com.apollographql.apollo3.api.Throws
 import com.apollographql.apollo3.api.Upload
+import com.apollographql.apollo3.api.internal.json.BufferedSourceJsonReader.Companion.MAX_STACK_SIZE
 import com.apollographql.apollo3.api.json.JsonWriter
 import com.apollographql.apollo3.exception.JsonDataException
 import okio.BufferedSink
@@ -31,12 +32,12 @@ import okio.IOException
  * To writer to a [Map], see also [MapJsonWriter]
  */
 class BufferedSinkJsonWriter(private val sink: BufferedSink) : JsonWriter {
-  // The nesting stack. Using a manual array rather than an ArrayList saves 20%. This stack permits  up to 32 levels of nesting including
+  // The nesting stack. Using a manual array rather than an ArrayList saves 20%. This stack permits  up to MAX_STACK_SIZE levels of nesting including
   // the top-level document. Deeper nesting is prone to trigger StackOverflowErrors.
   private var stackSize = 0
-  private val scopes = IntArray(32)
-  private val pathNames = arrayOfNulls<String>(32)
-  private val pathIndices = IntArray(32)
+  private val scopes = IntArray(MAX_STACK_SIZE)
+  private val pathNames = arrayOfNulls<String>(MAX_STACK_SIZE)
+  private val pathIndices = IntArray(MAX_STACK_SIZE)
 
   /**
    * A string containing a full set of spaces for a single level of indentation, or null for no pretty printing.

apollo-api/src/commonMain/kotlin/com/apollographql/apollo3/api/internal/json/BufferedSourceJsonReader.kt

@@ -56,21 +56,21 @@ class BufferedSourceJsonReader(private val source: BufferedSource) : JsonReader
 
   /**
    * The nesting stack. Using a manual array rather than an ArrayList saves 20%.
-   * This stack permits up to 32 levels of nesting including the top-level document.
+   * This stack permits up to MAX_STACK_SIZE levels of nesting including the top-level document.
    * Deeper nesting is prone to trigger StackOverflowErrors.
    */
-  private val stack = IntArray(32).apply {
+  private val stack = IntArray(MAX_STACK_SIZE).apply {
     this[0] = JsonScope.EMPTY_DOCUMENT
   }
   private var stackSize = 1
-  private val pathNames = arrayOfNulls<String>(32)
-  private val pathIndices = IntArray(32)
+  private val pathNames = arrayOfNulls<String>(MAX_STACK_SIZE)
+  private val pathIndices = IntArray(MAX_STACK_SIZE)
 
   private var lenient = false
 
   private var failOnUnknown = false
 
-  private val indexStack = IntArray(32).apply {
+  private val indexStack = IntArray(MAX_STACK_SIZE).apply {
     this[0] = 0
   }
   private var indexStackSize = 1
@@ -967,5 +967,7 @@ class BufferedSourceJsonReader(private val source: BufferedSource) : JsonReader
     private const val NUMBER_CHAR_EXP_E = 5
     private const val NUMBER_CHAR_EXP_SIGN = 6
     private const val NUMBER_CHAR_EXP_DIGIT = 7
+
+    const val MAX_STACK_SIZE = 256
   }
 }

apollo-api/src/commonMain/kotlin/com/apollographql/apollo3/api/internal/json/MapJsonReader.kt

@@ -1,5 +1,6 @@
 package com.apollographql.apollo3.api.internal.json
 
+import com.apollographql.apollo3.api.internal.json.BufferedSourceJsonReader.Companion.MAX_STACK_SIZE
 import com.apollographql.apollo3.api.internal.json.Utils.readRecursively
 import com.apollographql.apollo3.api.json.JsonReader
 
@@ -42,10 +43,7 @@ class MapJsonReader(val root: Map<String, Any?>) : JsonReader {
   // No need to stack this, when we pop, we know we have to read a new name
   private var currentName: String? = "root"
 
-  /**
-   * See [com.apollographql.apollo3.api.internal.json.BufferedSourceJsonReader] for the 32 limitation
-   */
-  private val nameIndexStack = IntArray(32).apply {
+  private val nameIndexStack = IntArray(MAX_STACK_SIZE).apply {
     this[0] = 0
   }