StringReader部分

src/Reader/FileReader.php

@@ -9,7 +9,10 @@
 namespace JerryYan\DSL\Reader;
 
 
-class FileReader extends ReaderInterface
+class FileReader /** extends ReaderInterface */
 {
+    public function __construct(string $fileName)
+    {
+    }
 
 }

src/Reader/ReaderInterface.php

@@ -17,13 +17,42 @@ namespace JerryYan\DSL\Reader;
  */
 abstract class ReaderInterface
 {
-    protected $currentLine = 0;
+    protected $currentLine = 1;
     protected $currentPosition = 0;
     protected $currentLinePosition = 0;
-    #abstract public function getNextChar(): ?string;
-    #abstract public function getCurrentToken(): ?string;
-    #abstract public function getNextToken(): ?string;
-    #abstract public function moveToNextToken(): ?string;
+    protected $nextPosition = 0;
+
+    /**
+     * 获取下一个字符
+     * @return string
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 12:06
+     */
+    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
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 12:06
+     */
+    abstract public function getNextToken(): string;
+
+    /**
+     * 移动至下一个识别符
+     * @return bool
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 12:06
+     */
+    abstract public function moveToNextToken(): bool;
 
     /**
      * 跳过当前行
@@ -31,7 +60,7 @@ abstract class ReaderInterface
      * @author Jerry Yan <792602257@qq.com>
      * @date 2020/12/17 15:43
      */
-    #abstract public function skipCurrentLine(): bool;
+    abstract public function skipCurrentLine(): bool;
 
     /**
      * 从当前位置跳到结束位置
@@ -40,5 +69,28 @@ abstract class ReaderInterface
      * @author Jerry Yan <792602257@qq.com>
      * @date 2020/12/17 15:43
      */
-    #abstract public function skipUntil(string $end="*/"): bool;
+    abstract public function skipUntil(string $end="*/"): bool;
+
+    /**
+     * 重置读取器
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 12:01
+     */
+    public function reset(): void
+    {
+        $this->currentLine = 1;
+        $this->currentPosition = 0;
+        $this->nextPosition = 0;
+        $this->moveToNextToken();
+    }
+
+    /**
+     * 重置读取器
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 12:01
+     */
+    public function resetCursor(): void
+    {
+        $this->reset();
+    }
 }

src/Reader/StreamReader.php

@@ -1,15 +0,0 @@
-<?php
-/**
- * @filename StreamReader.php
- * @author Jerry Yan <792602257@qq.com>
- * @date 2020/12/17 14:58
- */
-
-
-namespace JerryYan\DSL\Reader;
-
-
-class StreamReader extends ReaderInterface
-{
-
-}

src/Reader/StringReader.php

@@ -0,0 +1,124 @@
+<?php
+/**
+ * @filename StringReader.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2020/12/17 14:58
+ */
+
+
+namespace JerryYan\DSL\Reader;
+
+
+class StringReader extends ReaderInterface
+{
+    protected $string;
+    protected $currentToken;
+
+    public function __construct(string $string)
+    {
+        $this->string = $string;
+        $this->moveToNextToken();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getNextChar(int $startAt = null): string
+    {
+        if ($startAt === null) $startAt = $this->currentPosition;
+        return mb_substr($this->string, $startAt, 1);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getCurrentToken(): string
+    {
+        return $this->currentToken;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getNextToken(): string
+    {
+        $curToken = "";
+        $curPos = $this->nextPosition;
+        while ($curChar = $this->getNextChar($curPos)) {
+            switch ($curChar) {
+                case " ":
+                    // 如果开始的时候就有空白，跳过它
+                    if (empty($curToken)) {
+                        continue 2;
+                    }
+                    // 否则就结束（已经匹配完成）
+                    break 2;
+                case "\r":
+                case "\n":
+                    break 2;
+                default:
+                    $curToken .= $curChar;
+            }
+        }
+        return $curToken;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function moveToNextToken(): bool
+    {
+        $curToken = "";
+        $this->currentPosition = $this->nextPosition;
+        while ($curChar = $this->getNextChar($this->nextPosition)) {
+            $this->nextPosition++;
+            $this->currentLinePosition++;
+            switch ($curChar) {
+                case " ":
+                    // 如果开始的时候就有空白，跳过它
+                    if (empty($curToken)) {
+                        $this->currentPosition++;
+                        continue 2;
+                    }
+                    // 否则就结束（已经匹配完成）
+                    break 2;
+                case "\r":
+                    if ($this->getNextChar($this->nextPosition+1) === "\n") {
+                        // CRLF换行
+                        $this->nextPosition+=2;
+                    }
+                    // CR换行
+                    $this->currentLine++;
+                    $this->currentLinePosition=0;
+                    break 2;
+                case "\n":
+                    // LF换行
+                    $this->currentLine++;
+                    $this->currentLinePosition=0;
+                    break 2;
+                default:
+                    $curToken .= $curChar;
+            }
+        }
+        $this->currentToken = $curToken;
+        return true;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function skipCurrentLine(): bool
+    {
+        // TODO: Implement skipCurrentLine() method.
+        return true;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function skipUntil(string $end = "*/"): bool
+    {
+        // TODO: Implement skipUntil() method.
+        return true;
+    }
+}

src/Token/TokenAnd.php

@@ -9,7 +9,7 @@
 namespace JerryYan\DSL\Token;
 
 
-class TokenAnd
+class TokenAnd extends TokenInterface
 {
 
 }

src/Token/TokenFactory.php

@@ -12,8 +12,24 @@ namespace JerryYan\DSL\Token;
 class TokenFactory
 {
     /** @var array<string, string> Token类型及映射类 */
-    #private $tokenMap = [
-    #    Token::AND => TokenAnd::class,
-    #];
+    private $tokenMap = [
+        Token::AND => TokenAnd::class,
+        Token::OR => TokenOr::class,
+    ];
 
+    protected $tokenNameMap = [
+
+    ];
+
+    public function getTokenByName(string $name): TokenInterface
+    {
+        if (!isset($this->tokenNameMap[$name])) {
+            return new TokenUndefined();
+        }
+        $tokenType = $this->tokenNameMap[$name];
+        if (!isset($this->tokenMap[$tokenType])) {
+            return new TokenUndefined();
+        }
+        return new $this->tokenMap[$tokenType];
+    }
 }

src/Token/TokenOr.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * @filename TokenAnd.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2020/12/17 15:20
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenOr extends TokenInterface
+{
+
+}

src/Token/TokenUndefined.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * @filename TokenUndefined.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2020/12/18 12:15
+ */
+
+
+namespace JerryYan\DSL\Token;
+
+
+class TokenUndefined extends TokenInterface
+{
+
+}

src/Tokenizer/Tokenizer.php

@@ -9,7 +9,31 @@
 namespace JerryYan\DSL\Tokenizer;
 
 
+use ArrayIterator;
+use JerryYan\DSL\Reader\ReaderInterface;
+use JerryYan\DSL\Token\TokenFactory;
+
 class Tokenizer extends TokenizerInterface
 {
 
+    public function __construct(TokenFactory $tokenFactory)
+    {
+        $this->tokenFactory = $tokenFactory;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    function tokenize(ReaderInterface $reader): ArrayIterator
+    {
+        $reader->resetCursor();
+        $tokens = [];
+        while($reader->moveToNextToken())
+        {
+            $currentTokenName = $reader->getCurrentToken();
+            $currentToken = $this->tokenFactory->getTokenByName($currentTokenName);
+            $tokens[] = $currentToken;
+        }
+        return new ArrayIterator($tokens);
+    }
 }

src/Tokenizer/TokenizerInterface.php

@@ -9,7 +9,20 @@
 namespace JerryYan\DSL\Tokenizer;
 
 
+use ArrayIterator;
+use JerryYan\DSL\Reader\ReaderInterface;
+use JerryYan\DSL\Token\TokenInterface;
+
 abstract class TokenizerInterface
 {
 
+    protected $tokenFactory;
+    /**
+     *
+     * @param ReaderInterface $reader
+     * @return ArrayIterator<TokenInterface>
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2020/12/18 11:43
+     */
+    abstract function tokenize(ReaderInterface $reader): ArrayIterator;
 }