抽象

src/Reader/ReaderInterface.php

@@ -21,6 +21,7 @@ abstract class ReaderInterface
     protected $currentPosition = 0;
     protected $currentLinePosition = 0;
     protected $nextPosition = 0;
+    protected $currentToken = "";
 
     /**
      * 获取下一个字符
@@ -30,14 +31,6 @@ abstract class ReaderInterface
      */
     abstract public function getNextChar(): string;
 
-    /**
-     * 获取当前识别符
-     * @return string
-     * @author Jerry Yan <792602257@qq.com>
-     * @date 2020/12/18 12:06
-     */
-    abstract public function getCurrentToken(): string;
-
     /**
      * 获取下一个识别符
      * @return string
@@ -93,4 +86,17 @@ abstract class ReaderInterface
     {
         $this->reset();
     }
+
+    public function getCurrentPosition(): int
+    {
+        return $this->currentPosition;
+    }
+    public function getNextPosition(): int
+    {
+        return $this->nextPosition;
+    }
+    public function getCurrentToken(): string
+    {
+        return $this->currentToken;
+    }
 }

src/Reader/StringReader.php

@@ -12,7 +12,6 @@ namespace JerryYan\DSL\Reader;
 class StringReader extends ReaderInterface
 {
     protected $string;
-    protected $currentToken;
 
     public function __construct(string $string)
     {
@@ -29,14 +28,6 @@ class StringReader extends ReaderInterface
         return mb_substr($this->string, $startAt, 1);
     }
 
-    /**
-     * @inheritDoc
-     */
-    public function getCurrentToken(): string
-    {
-        return $this->currentToken;
-    }
-
     /**
      * @inheritDoc
      */
@@ -45,6 +36,7 @@ class StringReader extends ReaderInterface
         $curToken = "";
         $curPos = $this->nextPosition;
         while ($curChar = $this->getNextChar($curPos)) {
+            $curPos++;
             switch ($curChar) {
                 case " ":
                     // 如果开始的时候就有空白，跳过它
@@ -74,6 +66,7 @@ class StringReader extends ReaderInterface
             $this->nextPosition++;
             $this->currentLinePosition++;
             switch ($curChar) {
+                // TODO: 注释跳过
                 case " ":
                     // 如果开始的时候就有空白，跳过它
                     if (empty($curToken)) {
@@ -83,18 +76,18 @@ class StringReader extends ReaderInterface
                     // 否则就结束（已经匹配完成）
                     break 2;
                 case "\r":
-                    if ($this->getNextChar($this->nextPosition+1) === "\n") {
+                    if ($this->getNextChar($this->nextPosition + 1) === "\n") {
                         // CRLF换行
-                        $this->nextPosition+=2;
+                        $this->nextPosition++;
                     }
                     // CR换行
                     $this->currentLine++;
-                    $this->currentLinePosition=0;
+                    $this->currentLinePosition = 0;
                     break 2;
                 case "\n":
                     // LF换行
                     $this->currentLine++;
-                    $this->currentLinePosition=0;
+                    $this->currentLinePosition = 0;
                     break 2;
                 default:
                     $curToken .= $curChar;
@@ -109,8 +102,24 @@ class StringReader extends ReaderInterface
      */
     public function skipCurrentLine(): bool
     {
-        // TODO: Implement skipCurrentLine() method.
-        return true;
+        $curPos = $this->currentPosition;
+        while ($curChar = $this->getNextChar($curPos)) {
+            $curPos++;
+            switch ($curChar) {
+                case "\r":
+                    if ($this->getNextChar($this->nextPosition + 1) === "\n") {
+                        // CRLF换行
+                        $curPos++;
+                    }
+                    break 2;
+                case "\n":
+                    break 2;
+            }
+        }
+        $this->nextPosition = $curPos + 1;
+        $this->currentLine++;
+        $this->currentLinePosition = 0;
+        return $this->moveToNextToken();
     }
 
     /**

tests/Reader/StringReaderTest.php

@@ -24,19 +24,24 @@ class StringReaderTest extends TestCase
     {
         $this->reader->reset();
         $this->assertEquals('A', $this->reader->getNextChar(), "不匹配");
+        $this->assertEquals(1, $this->reader->getCurrentPosition(), "CurPos与预计不符");
         $this->readerWithCn->reset();
         $this->assertEquals('中', $this->readerWithCn->getNextChar(), "不匹配");
+        $this->assertEquals(1, $this->readerWithCn->getCurrentPosition(), "CurPos与预计不符");
     }
 
     public function testGetCurrentToken()
     {
         $this->reader->reset();
         $this->assertEquals('Ahhh', $this->reader->getCurrentToken(), "不匹配");
+        $this->assertEquals(6, $this->reader->getNextPosition(), "NextPos与预计不符");
         $this->readerWithCn->reset();
         $this->assertEquals('中文', $this->readerWithCn->getCurrentToken(), "不匹配");
+        $this->assertEquals(4, $this->readerWithCn->getNextPosition(), "NextPos与预计不符");
     }
 
     /**
+     * 移动至下一个Token
      * @author Jerry Yan <792602257@qq.com>
      * @date 2020/12/18 14:16
      * @depends testGetNextChar
@@ -47,8 +52,25 @@ class StringReaderTest extends TestCase
         $this->reader->reset();
         $this->reader->moveToNextToken();
         $this->assertEquals('This', $this->reader->getCurrentToken(), "不匹配");
+        $this->assertEquals(7, $this->reader->getCurrentPosition(), "CurPos与预计不符");
         $this->readerWithCn->reset();
         $this->readerWithCn->moveToNextToken();
         $this->assertEquals('这是', $this->readerWithCn->getCurrentToken(), "不匹配");
+        $this->assertEquals(5, $this->readerWithCn->getCurrentPosition(), "CurPos与预计不符");
+    }
+
+    /**
+     * 获取下一个Token，重复调用均为同一结果
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 18:49
+     */
+    public function testGetNextToken()
+    {
+        $this->reader->reset();
+        $curPos = $this->readerWithCn->getCurrentPosition();
+        $string = $this->reader->getNextToken();
+        $this->assertEquals($string, $this->reader->getNextToken(), "不匹配");
+        $this->assertEquals($this->reader->getNextToken(), $this->reader->getNextToken(), "不匹配");
+        $this->assertEquals($curPos, $this->reader->getCurrentPosition(), "CurPos不可以发生变化");
     }
 }