From 05d5493fafc81d00a8011c5e97a58f6f1a59d54f Mon Sep 17 00:00:00 2001
From: 0xDyews <219920166+0xDyews@users.noreply.github.com>
Date: Tue, 15 Sep 2026 19:30:25 +0200
Subject: [PATCH] Fix JSON number parsing

---
 src/jsonparse.hpp | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/jsonparse.hpp b/src/jsonparse.hpp
index 8d100b8..78ca6af 100644
--- a/src/jsonparse.hpp
+++ b/src/jsonparse.hpp
@@ -190,14 +190,27 @@ struct Parser {
 
     bool parse_number(JsonValue& out) {
         size_t start = i;
-        if (i < s.size() && (s[i] == '-' || s[i] == '+')) ++i;
-        bool any = false;
-        while (i < s.size() && ((s[i] >= '0' && s[i] <= '9') || s[i] == '.' || s[i] == 'e' ||
-                                s[i] == 'E' || s[i] == '+' || s[i] == '-')) {
+        if (i < s.size() && s[i] == '-') ++i;
+        if (i >= s.size()) return false;
+        if (s[i] == '0') {
+            ++i;
+            if (i < s.size() && s[i] >= '0' && s[i] <= '9') return false;
+        } else if (s[i] >= '1' && s[i] <= '9') {
+            while (i < s.size() && s[i] >= '0' && s[i] <= '9') ++i;
+        } else {
+            return false;
+        }
+        if (i < s.size() && s[i] == '.') {
+            ++i;
+            if (i >= s.size() || s[i] < '0' || s[i] > '9') return false;
+            while (i < s.size() && s[i] >= '0' && s[i] <= '9') ++i;
+        }
+        if (i < s.size() && (s[i] == 'e' || s[i] == 'E')) {
             ++i;
-            any = true;
+            if (i < s.size() && (s[i] == '+' || s[i] == '-')) ++i;
+            if (i >= s.size() || s[i] < '0' || s[i] > '9') return false;
+            while (i < s.size() && s[i] >= '0' && s[i] <= '9') ++i;
         }
-        if (!any) return false;
         std::string tok(s.substr(start, i - start));
         try {
             out.num = std::stod(tok);