From d2a10668321b6489bfe296aad0f4dea7858576cd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=AB=98=E9=93=81?= <shaojin.wensj@alibaba-inc.com>
Date: Sun, 1 Sep 2024 14:51:12 +0800
Subject: [PATCH] add JSONReader.Feature#UseDoubleForDecimals

---
 .../main/java/com/alibaba/fastjson2/JSONReader.java  | 12 +++++++++++-
 .../com/alibaba/fastjson/parser/JSONScanner.java     |  4 ++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONReader.java b/core/src/main/java/com/alibaba/fastjson2/JSONReader.java
index 5e78db9be7..bfee9d411f 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONReader.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONReader.java
@@ -2977,6 +2977,10 @@ public final Number getNumber() {
                             decimalStr + "E" + exponent);
                 }
 
+                if ((context.features & Feature.UseDoubleForDecimals.mask) != 0) {
+                    return decimal.doubleValue();
+                }
+
                 return decimal;
             }
             case JSON_TYPE_BIG_DEC: {
@@ -4562,8 +4566,14 @@ public enum Feature {
 
         /**
          * Feature that disables the support for single quote.
+         * @since 2.0.53
+         */
+        DisableSingleQuote(1L << 31L),
+
+        /**
+         * @since 2.0.53
          */
-        DisableSingleQuote(1 << 31);
+        UseDoubleForDecimals(1L << 32L);
 
         public final long mask;
 
diff --git a/fastjson1-compatible/src/main/java/com/alibaba/fastjson/parser/JSONScanner.java b/fastjson1-compatible/src/main/java/com/alibaba/fastjson/parser/JSONScanner.java
index 3328a3e3fe..9f11576468 100644
--- a/fastjson1-compatible/src/main/java/com/alibaba/fastjson/parser/JSONScanner.java
+++ b/fastjson1-compatible/src/main/java/com/alibaba/fastjson/parser/JSONScanner.java
@@ -113,7 +113,7 @@ public void config(Feature feature, boolean state) {
                 rawFeature = JSONReader.Feature.UseNativeObject;
                 break;
             case UseBigDecimal:
-                rawFeature = JSONReader.Feature.UseBigDecimalForDoubles;
+                rawFeature = JSONReader.Feature.UseDoubleForDecimals;
                 not = true;
                 break;
             case OrderedField:
@@ -166,7 +166,7 @@ public boolean isEnabled(Feature feature) {
                 rawFeature = JSONReader.Feature.UseNativeObject;
                 break;
             case UseBigDecimal:
-                return !reader.isEnabled(JSONReader.Feature.UseBigDecimalForDoubles);
+                return !reader.isEnabled(JSONReader.Feature.UseDoubleForDecimals);
             default:
                 break;
         }