Utility for reading lists

gson-compile-core/build.gradle.kts

@@ -12,6 +12,7 @@ repositories {
 }
 
 dependencies {
+    implementation("io.gitlab.jfronny:commons:2022.11.1+17-58-36")
     api("io.gitlab.jfronny:commons-gson:2022.11.1+17-58-36")
 }
 

gson-compile-core/src/main/java/io/gitlab/jfronny/gson/compile/util/GList.java

@@ -0,0 +1,26 @@
+package io.gitlab.jfronny.gson.compile.util;
+
+import io.gitlab.jfronny.commons.throwable.ThrowingFunction;
+import io.gitlab.jfronny.gson.stream.JsonReader;
+import io.gitlab.jfronny.gson.stream.JsonToken;
+
+import java.io.IOError;
+import java.io.IOException;
+import java.util.LinkedList;
+import java.util.List;
+
+public class GList {
+    public static <T> List<T> read(JsonReader reader, ThrowingFunction<JsonReader, T, IOError> read) throws IOException {
+        if (reader.isLenient() && reader.peek() != JsonToken.BEGIN_ARRAY) return List.of(read.apply(reader));
+        reader.beginArray();
+        List<T> res = new LinkedList<>();
+        while (reader.hasNext()) {
+            if (reader.peek() == JsonToken.NULL) {
+                reader.nextNull();
+                res.add(null);
+            } else res.add(read.apply(reader));
+        }
+        reader.endArray();
+        return res;
+    }
+}