diff --git a/src/main/java/org/jcnc/snow/compiler/Main.java b/src/main/java/org/jcnc/snow/compiler/Main.java
index dc6fa5c..ec0a0a1 100644
--- a/src/main/java/org/jcnc/snow/compiler/Main.java
+++ b/src/main/java/org/jcnc/snow/compiler/Main.java
@@ -2,7 +2,6 @@ package org.jcnc.snow.compiler;
 
 import org.jcnc.snow.compiler.lexer.LexerEngine;
 import org.jcnc.snow.compiler.lexer.token.Token;
-import org.jcnc.snow.compiler.lexer.utils.TokenPrinter;
 import org.jcnc.snow.compiler.parser.ParserEngine;
 import org.jcnc.snow.compiler.parser.context.ParserContext;
 import org.jcnc.snow.compiler.parser.ast.base.Node;
@@ -28,6 +27,8 @@ public class Main {
         ParserContext ctx = new ParserContext(tokens);
         List<Node> ast = new ParserEngine(ctx).parse();
 
+        // 3. 语义分析
+
 
 
         // 打印
diff --git a/src/main/java/org/jcnc/snow/compiler/parser/statement/IfStatementParser.java b/src/main/java/org/jcnc/snow/compiler/parser/statement/IfStatementParser.java
index 61d044e..7c42555 100644
--- a/src/main/java/org/jcnc/snow/compiler/parser/statement/IfStatementParser.java
+++ b/src/main/java/org/jcnc/snow/compiler/parser/statement/IfStatementParser.java
@@ -13,7 +13,7 @@ import java.util.List;
 
 /**
  * 解析 if 语句：
- *
+ * <p>
  * 支持格式：
  * if <condition> then
  *   <then-statements>
diff --git a/src/main/java/org/jcnc/snow/compiler/parser/util/JSONParser.java b/src/main/java/org/jcnc/snow/compiler/parser/util/JSONParser.java
index d5204a6..9a52939 100644
--- a/src/main/java/org/jcnc/snow/compiler/parser/util/JSONParser.java
+++ b/src/main/java/org/jcnc/snow/compiler/parser/util/JSONParser.java
@@ -203,8 +203,8 @@ public class JSONParser {
             if (currentChar() == '-') advance();
             while (isDigit(currentChar())) advance();
             if (currentChar() == '.') {
-                advance();
-                while (isDigit(currentChar())) advance();
+                do advance();
+                while (isDigit(currentChar()));
             }
             if (currentChar() == 'e' || currentChar() == 'E') {
                 advance();
@@ -316,14 +316,13 @@ public class JSONParser {
         /**
          * 根据对象类型选择合适的写入方式
          */
-        @SuppressWarnings("unchecked")
         private static void writeValue(Object obj, StringBuilder sb) {
             if (obj == null) {
                 sb.append("null");
             } else if (obj instanceof String) {
                 quote((String) obj, sb);
             } else if (obj instanceof Number || obj instanceof Boolean) {
-                sb.append(obj.toString());
+                sb.append(obj);
             } else if (obj instanceof Map) {
                 sb.append('{');
                 boolean first = true;