From 22c7ec46f88180bc9a6d193e4656fd906ebb1ca8 Mon Sep 17 00:00:00 2001
From: zhangxun <1958638841@qq.com>
Date: Sat, 28 Jun 2025 10:20:11 +0800
Subject: [PATCH] =?UTF-8?q?style:=20TokenStream.isAtEnd=20=E8=BF=94?=
 =?UTF-8?q?=E5=9B=9E=E5=80=BC=E7=AC=A6=E5=90=88=E6=96=87=E6=A1=A3=E8=AF=B4?=
 =?UTF-8?q?=E6=98=8E?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../org/jcnc/snow/compiler/parser/context/TokenStream.java  | 2 +-
 .../org/jcnc/snow/compiler/parser/core/ParserEngine.java    | 6 +++---
 .../compiler/parser/expression/PrattExpressionParser.java   | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/main/java/org/jcnc/snow/compiler/parser/context/TokenStream.java b/src/main/java/org/jcnc/snow/compiler/parser/context/TokenStream.java
index 5841b7b..2788300 100644
--- a/src/main/java/org/jcnc/snow/compiler/parser/context/TokenStream.java
+++ b/src/main/java/org/jcnc/snow/compiler/parser/context/TokenStream.java
@@ -120,7 +120,7 @@ public class TokenStream {
      * @return 若当前位置 Token 为 EOF，则返回 true，否则 false
      */
     public boolean isAtEnd() {
-        return peek().getType() != TokenType.EOF;
+        return peek().getType() == TokenType.EOF;
     }
 
 
diff --git a/src/main/java/org/jcnc/snow/compiler/parser/core/ParserEngine.java b/src/main/java/org/jcnc/snow/compiler/parser/core/ParserEngine.java
index 7d0854f..14dc783 100644
--- a/src/main/java/org/jcnc/snow/compiler/parser/core/ParserEngine.java
+++ b/src/main/java/org/jcnc/snow/compiler/parser/core/ParserEngine.java
@@ -17,7 +17,7 @@ public record ParserEngine(ParserContext ctx) {
         List<String> errs = new ArrayList<>();
         TokenStream ts = ctx.getTokens();
 
-        while (ts.isAtEnd()) {
+        while (!ts.isAtEnd()) {
             // 跳过空行
             if (ts.peek().getType() == TokenType.NEWLINE) {
                 ts.next();
@@ -46,7 +46,7 @@ public record ParserEngine(ParserContext ctx) {
      * 错误同步：跳到下一行或下一个已注册顶层关键字
      */
     private void synchronize(TokenStream ts) {
-        while (ts.isAtEnd()) {
+        while (!ts.isAtEnd()) {
             if (ts.peek().getType() == TokenType.NEWLINE) {
                 ts.next();
                 break;
@@ -57,7 +57,7 @@ public record ParserEngine(ParserContext ctx) {
             ts.next();
         }
         // 连续空行全部吃掉
-        while (ts.isAtEnd() && ts.peek().getType() == TokenType.NEWLINE) {
+        while (!ts.isAtEnd() && ts.peek().getType() == TokenType.NEWLINE) {
             ts.next();
         }
     }
diff --git a/src/main/java/org/jcnc/snow/compiler/parser/expression/PrattExpressionParser.java b/src/main/java/org/jcnc/snow/compiler/parser/expression/PrattExpressionParser.java
index 4f79274..c5529d4 100644
--- a/src/main/java/org/jcnc/snow/compiler/parser/expression/PrattExpressionParser.java
+++ b/src/main/java/org/jcnc/snow/compiler/parser/expression/PrattExpressionParser.java
@@ -92,7 +92,7 @@ public class PrattExpressionParser implements ExpressionParser {
 
         ExpressionNode left = prefix.parse(ctx, token);
 
-        while (ctx.getTokens().isAtEnd()
+        while (!ctx.getTokens().isAtEnd()
                 && prec.ordinal() < nextPrecedence(ctx)) {
             String lex = ctx.getTokens().peek().getLexeme();
             InfixParselet infix = infixes.get(lex);