diff --git a/src/Exception/FileNotFoundException.php b/src/Exception/FileNotFoundException.php
new file mode 100644
index 0000000..c4c6b98
--- /dev/null
+++ b/src/Exception/FileNotFoundException.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * @filename FileNotFoundException.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:52
+ */
+
+
+namespace JerryYan\DSL\Exception;
+
+
+use Exception;
+
+class FileNotFoundException extends Exception
+{
+
+}
\ No newline at end of file
diff --git a/src/Reader/FileReader.php b/src/Reader/FileReader.php
index 09328d5..85bee76 100644
--- a/src/Reader/FileReader.php
+++ b/src/Reader/FileReader.php
@@ -9,10 +9,22 @@
 namespace JerryYan\DSL\Reader;
 
 
-class FileReader /** extends ReaderInterface */
+use JerryYan\DSL\Exception\FileNotFoundException;
+
+class FileReader extends StringReader
 {
+    /**
+     * FileReader constructor.
+     * @param string $fileName
+     * @throws FileNotFoundException
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2021/1/26 13:52
+     */
     public function __construct(string $fileName)
     {
+        if (!file_exists($fileName)) throw new FileNotFoundException;
+        $content = file_get_contents($fileName);
+        parent::__construct($content);
     }
 
 }
\ No newline at end of file
diff --git a/src/Reader/ReaderInterface.php b/src/Reader/ReaderInterface.php
index f4d2c19..2dafcb5 100644
--- a/src/Reader/ReaderInterface.php
+++ b/src/Reader/ReaderInterface.php
@@ -133,6 +133,17 @@ abstract class ReaderInterface
         $this->currentPosition += $charLength;
     }
 
+    /**
+     * 移动Cursor至上一字符
+     * @param int $charLength
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/19 15:05
+     */
+    protected function moveCursorToPrevChar(int $charLength = 1): void
+    {
+        $this->currentPosition -= $charLength;
+    }
+
     /**
      * 移动Cursor至下一行
      * @param int|null $newPos 下一行位置，不提供则手动检测
diff --git a/src/Reader/StringReader.php b/src/Reader/StringReader.php
index dcdec40..cce31a8 100644
--- a/src/Reader/StringReader.php
+++ b/src/Reader/StringReader.php
@@ -79,18 +79,16 @@ class StringReader extends ReaderInterface
                     // 否则就结束（已经匹配完成）
                     break 2;
                 case "\r":
-                    if ($this->getNextChar($this->nextPosition) === "\n") {
-                        // CRLF换行
-                        if (empty($curToken)) {
-                            $this->moveCursorToNextChar();
-                        }
-                        $this->nextPosition++;
-                    }
-                    // CR换行
                     if (empty($curToken)) {
+                        // CRLF换行
+                        if ($this->getNextChar($this->nextPosition) === "\n") {
+                            $this->nextPosition++;
+                        }
                         $this->moveCursorToNextLine();
                         continue 2;
                     } else {
+                        // 重置游标
+                        $this->nextPosition--;
                         break 2;
                     }
                 case "\n":
@@ -99,6 +97,7 @@ class StringReader extends ReaderInterface
                         $this->moveCursorToNextLine();
                         continue 2;
                     } else {
+                        $this->nextPosition--;
                         break 2;
                     }
                 default:
diff --git a/src/Token/Factory/DefaultFactory.php b/src/Token/Factory/DefaultFactory.php
index 63a4a4f..51a6764 100644
--- a/src/Token/Factory/DefaultFactory.php
+++ b/src/Token/Factory/DefaultFactory.php
@@ -16,6 +16,9 @@ use JerryYan\DSL\Token\TokenFake;
 use JerryYan\DSL\Token\TokenLogicAnd;
 use JerryYan\DSL\Token\TokenLogicEqual;
 use JerryYan\DSL\Token\TokenLogicFake;
+use JerryYan\DSL\Token\TokenLogicGreater;
+use JerryYan\DSL\Token\TokenLogicLess;
+use JerryYan\DSL\Token\TokenLogicNot;
 use JerryYan\DSL\Token\TokenLogicNotEqual;
 use JerryYan\DSL\Token\TokenLogicOr;
 use JerryYan\DSL\Token\TokenNumber;
@@ -29,8 +32,11 @@ class DefaultFactory extends FactoryInterface
         Token::CURRY => TokenCurry::class,
         Token::LOGIC_AND => TokenLogicAnd::class,
         Token::LOGIC_OR => TokenLogicOr::class,
+        Token::LOGIC_NOT => TokenLogicNot::class,
         Token::LOGIC_EQUAL => TokenLogicEqual::class,
         Token::LOGIC_NOT_EQUAL => TokenLogicNotEqual::class,
+        Token::LOGIC_GREATER => TokenLogicGreater::class,
+        Token::LOGIC_LESS => TokenLogicLess::class,
         Token::LOGIC_FAKE => TokenLogicFake::class,
         Token::VARIABLE => TokenVariable::class,
         Token::NUMBER => TokenNumber::class,
diff --git a/src/Token/TokenComment.php b/src/Token/TokenComment.php
new file mode 100644
index 0000000..916fa87
--- /dev/null
+++ b/src/Token/TokenComment.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * @filename TokenComment.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:43
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenComment extends TokenInterface
+{
+    public static $alias = [
+        '//'
+    ];
+}
\ No newline at end of file
diff --git a/src/Token/TokenCommentBlock.php b/src/Token/TokenCommentBlock.php
new file mode 100644
index 0000000..82f6301
--- /dev/null
+++ b/src/Token/TokenCommentBlock.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * @filename TokenCommentBlock.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:44
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenCommentBlock extends TokenInterface
+{
+    public static $alias = [
+        '/*', '*/'
+    ];
+}
\ No newline at end of file
diff --git a/src/Token/TokenLogicGreater.php b/src/Token/TokenLogicGreater.php
new file mode 100644
index 0000000..3ffad43
--- /dev/null
+++ b/src/Token/TokenLogicGreater.php
@@ -0,0 +1,15 @@
+<?php
+/**
+ * @filename TokenLogicGreater.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:48
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenLogicGreater extends TokenInterface
+{
+
+}
\ No newline at end of file
diff --git a/src/Token/TokenLogicLess.php b/src/Token/TokenLogicLess.php
new file mode 100644
index 0000000..99fb233
--- /dev/null
+++ b/src/Token/TokenLogicLess.php
@@ -0,0 +1,15 @@
+<?php
+/**
+ * @filename TokenLogicLess.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:48
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenLogicLess extends TokenInterface
+{
+
+}
\ No newline at end of file
diff --git a/src/Token/TokenLogicNot.php b/src/Token/TokenLogicNot.php
new file mode 100644
index 0000000..760dc1d
--- /dev/null
+++ b/src/Token/TokenLogicNot.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * @filename TokenLogicNot.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:46
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenLogicNot extends TokenInterface
+{
+    public static $alias = [
+        '不成立'
+    ];
+}
\ No newline at end of file
diff --git a/tests/Reader/FileReaderTest.php b/tests/Reader/FileReaderTest.php
new file mode 100644
index 0000000..9c95f0f
--- /dev/null
+++ b/tests/Reader/FileReaderTest.php
@@ -0,0 +1,45 @@
+<?php
+/**
+ * @filename FileReaderTest.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/26 13:52
+ */
+
+namespace JerryYan\DSL\Test\Reader;
+
+use JerryYan\DSL\Exception\FileNotFoundException;
+use JerryYan\DSL\Reader\FileReader;
+use JerryYan\DSL\Reader\ReaderInterface;
+
+class FileReaderTest extends StringReaderTest
+{
+    protected $files = [
+        __DIR__ . DIRECTORY_SEPARATOR . 'test.jdsl'
+    ];
+    /** @var ReaderInterface[]  */
+    protected $readerArray = [];
+    protected $things = [
+        [
+            'original' => "当 这个 等于 那个 的时候 则\r\n对 用户表 中的 该用户 更新 字段 状态 为 禁用",
+            'tokens' => ["当", "这个", "等于", "那个", "的时候", "则", "对", "用户表", "中的", "该用户", "更新", "字段", "状态", "为", "禁用"],
+            'nextTokens' => ["这个", "等于", "那个", "的时候", "则", "对", "用户表", "中的", "该用户", "更新", "字段", "状态", "为", "禁用", ""],
+            'positions' => [0, 2, 5, 8, 11, 15, 18, 20, 24, 27, 31, 34, 37, 40, 42, 45, 47],
+            'lines' => [1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+            'linePositions' => [0, 2, 5, 8, 11, 15, 0, 2, 6, 9, 13, 16, 19, 22, 24, 27, 29],
+            'moveToNextLines' => [6],
+        ],
+    ];
+
+    protected function setUp(): void
+    {
+        foreach ($this->files as $file) {
+            $this->readerArray[] = new FileReader($file);
+        }
+    }
+
+    public function testFileNotFoundException()
+    {
+        $this->expectException(FileNotFoundException::class);
+        new FileReader('Not Exist File');
+    }
+}
diff --git a/tests/Reader/StringReaderTest.php b/tests/Reader/StringReaderTest.php
index 2cbc18a..00ec1a2 100644
--- a/tests/Reader/StringReaderTest.php
+++ b/tests/Reader/StringReaderTest.php
@@ -7,19 +7,16 @@
 
 namespace JerryYan\DSL\Test\Reader;
 
+use JerryYan\DSL\Reader\ReaderInterface;
 use JerryYan\DSL\Reader\StringReader;
 use PHPUnit\Framework\TestCase;
 
 class StringReaderTest extends TestCase
 {
-    protected $readerWithCrLf;
-    protected $reader;
-    protected $things;
-    protected $thingsWithCrLf;
-
-    protected function setUp(): void
-    {
-        $this->things = [
+    /** @var ReaderInterface[]  */
+    protected $readerArray = [];
+    protected $things = [
+        [
             'original' => " Ahhh  This Is 一个 新的 TOken",
             'tokens' => ["Ahhh", "This", "Is", "一个", "新的", "TOken"],
             'nextTokens' => ["This", "Is", "一个", "新的", "TOken", ""],
@@ -27,8 +24,8 @@ class StringReaderTest extends TestCase
             'lines' => [1, 1, 1, 1, 1, 1],
             'linePositions' => [1, 7, 12, 15, 18, 21],
             'moveToNextLines' => [],
-        ];
-        $this->thingsWithCrLf = [
+        ],
+        [
             'original' => " 中文 \r\n\r 这是 \r Is A \n\n 一个 新的 TOken",
             'tokens' => ["中文", "这是", "Is", "A", "一个", "新的", "TOken"],
             'nextTokens' => ["这是", "Is", "A", "一个", "新的", "TOken", ""],
@@ -36,29 +33,34 @@ class StringReaderTest extends TestCase
             'lines' => [1, 3, 4, 4, 6, 6, 6],
             'linePositions' => [1, 1, 1, 4, 1, 4, 7],
             'moveToNextLines' => [1, 2, 4],
-        ];
-        $this->reader = new StringReader($this->things['original']);
-        $this->readerWithCrLf = new StringReader($this->thingsWithCrLf['original']);
+        ]
+    ];
+
+    protected function setUp(): void
+    {
+        foreach ($this->things as $thing) {
+            $this->readerArray[] = new StringReader($thing['original']);
+        }
     }
 
     public function testGetNextChar()
     {
-        $this->reader->reset();
-        $this->assertEquals(mb_substr(trim($this->things['original']), 0, 1), $this->reader->getNextChar(), "不匹配");
-        $this->assertEquals($this->things['positions'][0], $this->reader->getCurrentPosition(), "CurPos与预计不符");
-        $this->readerWithCrLf->reset();
-        $this->assertEquals(mb_substr(trim($this->thingsWithCrLf['original']), 0, 1), $this->readerWithCrLf->getNextChar(), "不匹配");
-        $this->assertEquals($this->thingsWithCrLf['positions'][0], $this->readerWithCrLf->getCurrentPosition(), "CurPos与预计不符");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->reset();
+            $this->assertEquals(mb_substr(trim($thing['original']), 0, 1), $reader->getNextChar(), "不匹配");
+            $this->assertEquals($thing['positions'][0], $reader->getCurrentPosition(), "CurPos与预计不符");
+        }
     }
 
     public function testGetCurrentToken()
     {
-        $this->reader->reset();
-        $this->assertEquals($this->things['positions'][0], $this->reader->getCurrentPosition(), "CurPos与预计不符");
-        $this->assertEquals($this->things['tokens'][0], $this->reader->getCurrentToken(), "不匹配");
-        $this->readerWithCrLf->reset();
-        $this->assertEquals($this->thingsWithCrLf['positions'][0], $this->readerWithCrLf->getCurrentPosition(), "CurPos与预计不符");
-        $this->assertEquals($this->thingsWithCrLf['tokens'][0], $this->readerWithCrLf->getCurrentToken(), "不匹配");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->reset();
+            $this->assertEquals($thing['positions'][0], $reader->getCurrentPosition(), "CurPos与预计不符");
+            $this->assertEquals($thing['tokens'][0], $reader->getCurrentToken(), "不匹配");
+        }
     }
 
     /**
@@ -71,37 +73,23 @@ class StringReaderTest extends TestCase
      */
     public function testMoveToNextToken()
     {
-        $this->reader->reset();
-        foreach ($this->things['nextTokens'] as $key=> $nextToken){
-            $oldCurToken = $this->reader->getCurrentToken();
-            $oldNextPos = $this->reader->getNextPosition();
-            $oldNextToken = $this->reader->getNextToken();
-            $this->assertEquals($nextToken, $oldNextToken, "不匹配");
-            $this->assertEquals($this->things['positions'][$key], $this->reader->getCurrentPosition(), "CurPos与预计不符");
-            $this->assertEquals($this->things['lines'][$key], $this->reader->getCurrentLine(), "CurLine与预计不符");
-            $this->assertEquals($this->things['linePositions'][$key], $this->reader->getCurrentLinePosition(), "CLPos与预计不符");
-            $hasNext = $this->reader->moveToNextToken();
-            if ($hasNext) {
-                $this->assertNotEquals($oldCurToken, $this->reader->getCurrentToken(), "CurToken与旧CurToken相同");
-                $this->assertNotEquals($oldNextPos, $this->reader->getNextPosition(), "NextPos与旧NextPos相同");
-                $this->assertNotEquals($this->reader->getNextPosition(), $this->reader->getCurrentPosition(), "CurPos与NextPos相同");
-            }
-        }
-        // Cr/LF Support
-        $this->readerWithCrLf->reset();
-        foreach ($this->thingsWithCrLf['nextTokens'] as $key=> $nextToken){
-            $oldCurToken = $this->readerWithCrLf->getCurrentToken();
-            $oldNextPos = $this->readerWithCrLf->getNextPosition();
-            $oldNextToken = $this->readerWithCrLf->getNextToken();
-            $this->assertEquals($nextToken, $oldNextToken, "不匹配");
-            $this->assertEquals($this->thingsWithCrLf['positions'][$key], $this->readerWithCrLf->getCurrentPosition(), "CurPos与预计不符");
-            $this->assertEquals($this->thingsWithCrLf['lines'][$key], $this->readerWithCrLf->getCurrentLine(), "CurLine与预计不符");
-            $this->assertEquals($this->thingsWithCrLf['linePositions'][$key], $this->readerWithCrLf->getCurrentLinePosition(), "CLPos与预计不符");
-            $hasNext = $this->readerWithCrLf->moveToNextToken();
-            if ($hasNext) {
-                $this->assertNotEquals($oldCurToken, $this->readerWithCrLf->getCurrentToken(), "CurToken与旧CurToken相同");
-                $this->assertNotEquals($oldNextPos, $this->readerWithCrLf->getNextPosition(), "NextPos与旧NextPos相同");
-                $this->assertNotEquals($this->readerWithCrLf->getNextPosition(), $this->readerWithCrLf->getCurrentPosition(), "CurPos与NextPos相同");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->reset();
+            foreach ($thing['nextTokens'] as $key=> $nextToken){
+                $oldCurToken = $reader->getCurrentToken();
+                $oldNextPos = $reader->getNextPosition();
+                $oldNextToken = $reader->getNextToken();
+                $this->assertEquals($nextToken, $oldNextToken, "不匹配");
+                $this->assertEquals($thing['positions'][$key], $reader->getCurrentPosition(), "CurPos与预计不符");
+                $this->assertEquals($thing['lines'][$key], $reader->getCurrentLine(), "CurLine与预计不符");
+                $this->assertEquals($thing['linePositions'][$key], $reader->getCurrentLinePosition(), "CLPos与预计不符");
+                $hasNext = $reader->moveToNextToken();
+                if ($hasNext) {
+                    $this->assertNotEquals($oldCurToken, $reader->getCurrentToken(), "CurToken与旧CurToken相同");
+                    $this->assertNotEquals($oldNextPos, $reader->getNextPosition(), "NextPos与旧NextPos相同");
+                    $this->assertNotEquals($reader->getNextPosition(), $reader->getCurrentPosition(), "CurPos与NextPos相同");
+                }
             }
         }
     }
@@ -113,38 +101,45 @@ class StringReaderTest extends TestCase
      */
     public function testGetNextToken()
     {
-        $this->reader->reset();
-        $nextPos = $this->reader->getNextPosition();
-        $string = $this->reader->getNextToken();
-        $this->assertEquals($string, $this->reader->getNextToken(), "不匹配");
-        $this->assertEquals($this->reader->getNextToken(), $this->reader->getNextToken(), "不匹配");
-        $this->assertEquals($nextPos, $this->reader->getNextPosition(), "NextPos不可以发生变化");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->reset();
+            $nextPos = $reader->getNextPosition();
+            $string = $reader->getNextToken();
+            $this->assertEquals($string, $reader->getNextToken(), "不匹配");
+            $this->assertEquals($reader->getNextToken(), $reader->getNextToken(), "不匹配");
+            $this->assertEquals($nextPos, $reader->getNextPosition(), "NextPos不可以发生变化");
+        }
     }
 
     public function testSkipCurrentLine()
     {
-        $this->readerWithCrLf->resetCursor();
-        foreach ($this->thingsWithCrLf['moveToNextLines'] as $key){
-            $this->readerWithCrLf->skipCurrentLine();
-            $this->assertEquals($this->thingsWithCrLf['lines'][$key], $this->readerWithCrLf->getCurrentLine(), "行号不匹配");
-            $this->assertEquals($this->thingsWithCrLf['linePositions'][$key], $this->readerWithCrLf->getCurrentLinePosition(), "CLPos不匹配");
-            $this->assertEquals($this->thingsWithCrLf['tokens'][$key], $this->readerWithCrLf->getCurrentToken(), "Token不匹配");
-            $this->assertEquals($this->thingsWithCrLf['positions'][$key], $this->readerWithCrLf->getCurrentPosition(), "CurPos不匹配");
-            $this->assertEquals($this->thingsWithCrLf['nextTokens'][$key], $this->readerWithCrLf->getNextToken(), "NextToken不匹配");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->reset();
+            foreach ($thing['moveToNextLines'] as $key){
+                $reader->skipCurrentLine();
+                $this->assertEquals($thing['lines'][$key], $reader->getCurrentLine(), "行号不匹配");
+                $this->assertEquals($thing['linePositions'][$key], $reader->getCurrentLinePosition(), "CLPos不匹配");
+                $this->assertEquals($thing['tokens'][$key], $reader->getCurrentToken(), "Token不匹配");
+                $this->assertEquals($thing['positions'][$key], $reader->getCurrentPosition(), "CurPos不匹配");
+                $this->assertEquals($thing['nextTokens'][$key], $reader->getNextToken(), "NextToken不匹配");
+            }
         }
     }
 
     public function testResetCursor()
     {
-        $this->readerWithCrLf->moveToNextToken();
-        $curPos = $this->readerWithCrLf->getCurrentPosition();
-        $nextPos = $this->readerWithCrLf->getNextPosition();
-        $curLine = $this->readerWithCrLf->getCurrentLine();
-        $string = $this->readerWithCrLf->getCurrentToken();
-        $this->readerWithCrLf->resetCursor();
-        $this->assertNotEquals($curPos, $this->readerWithCrLf->getCurrentPosition(), "CurPos未发生变化");
-        $this->assertNotEquals($nextPos, $this->readerWithCrLf->getNextPosition(), "NextPos未发生变化");
-        $this->assertNotEquals($curLine, $this->readerWithCrLf->getCurrentLine(), "CurLine未发生变化");
-        $this->assertNotEquals($string, $this->readerWithCrLf->getCurrentToken(), "CurToken未发生变化");
+        foreach ($this->things as $index=>$thing) {
+            $reader = $this->readerArray[$index];
+            $reader->moveToNextToken();
+            $curPos = $reader->getCurrentPosition();
+            $nextPos = $reader->getNextPosition();
+            $string = $reader->getCurrentToken();
+            $reader->resetCursor();
+            $this->assertNotEquals($curPos, $reader->getCurrentPosition(), "CurPos未发生变化");
+            $this->assertNotEquals($nextPos, $reader->getNextPosition(), "NextPos未发生变化");
+            $this->assertNotEquals($string, $reader->getCurrentToken(), "CurToken未发生变化");
+        }
     }
 }
diff --git a/tests/Reader/test.jdsl b/tests/Reader/test.jdsl
new file mode 100644
index 0000000..a615234
--- /dev/null
+++ b/tests/Reader/test.jdsl
@@ -0,0 +1,2 @@
+当 这个 等于 那个 的时候 则
+对 用户表 中的 该用户 更新 字段 状态 为 禁用
\ No newline at end of file