First commit

3rdparty/luminous/languages/json.php

@@ -0,0 +1,106 @@
+<?php
+
+
+class LuminousJSONScanner extends LuminousScanner {
+  
+  private $stack = array();
+  
+  
+  public function init() {
+    $this->add_identifier_mapping('KEYWORD', array('true', 'false', 'null'));
+  
+    
+  }
+  public function state() {
+    if (!empty($this->stack)) return $this->stack[count($this->stack)-1][0];
+    else return null;
+  }
+  
+  private function expecting($x=null) {
+    if ($x !== null) {
+      if (!empty($this->stack)) $this->stack[count($this->stack)-1][1] = $x;
+    }
+    if (!empty($this->stack)) return $this->stack[count($this->stack)-1][1];
+    else return null;
+  }
+
+  function main() {
+    while (!$this->eos()) {
+      $tok = null;
+      $c = $this->peek();
+      
+      list($state, $expecting) = array($this->state(), $this->expecting());
+      
+      $this->skip_whitespace();
+      if ($this->eos())  break;
+      if ($this->scan(LuminousTokenPresets::$NUM_REAL) !== null) {
+        $tok = 'NUMERIC';
+      }
+      elseif($this->scan('/[a-zA-Z]\w*/')) {
+        $tok = 'IDENT';
+      }
+      elseif($this->scan(LuminousTokenPresets::$DOUBLE_STR)) {
+        $tok = ($state === 'obj' && $expecting === 'key')? 'TYPE' : 'STRING';
+      }
+      elseif($this->scan('/\[/')) {
+        $this->stack[] = array('array', null);
+        $tok = 'OPERATOR';
+      }
+      elseif($this->scan('/\]/')) {
+        if ($state === 'array') {
+          array_pop($this->stack);
+          $tok = 'OPERATOR';
+        }
+      }
+      elseif($this->scan('/\{/')) {
+        $this->stack[] = array('obj', 'key');
+        $tok = 'OPERATOR';
+      }
+      elseif($state === 'obj' && $this->scan('/\}/')) {
+        array_pop($this->stack);
+        $tok = 'OPERATOR';
+      }
+      elseif($state === 'obj' && $this->scan('/:/')) {
+        $this->expecting('value');
+        $tok = 'OPERATOR';
+      }
+      elseif($this->scan('/,/')) {
+        if ($state === 'obj') {
+          $this->expecting('key');
+          $tok = 'OPERATOR';
+        }
+        elseif($state === 'array') $tok = 'OPERATOR';
+      }
+      else $this->scan('/./');
+      
+      $this->record($this->match(), $tok);
+    }
+  }
+
+  public static function guess_language($src, $info) {
+    // JSON is fairly hard to guess
+    $p = 0;
+    $src_ = trim($src);
+    if (!empty($src_)) {
+      $char = $src_[0];
+      $char2 = $src_[strlen($src_)-1];
+      $str = '"(?>[^"\\\\]+|\\\\.)"';
+      // looks like an object or array
+      if ( ($char === '[' && $char2 === ']')
+        || ($char === '{' && $char2 === '}')) 
+      {
+        $p += 0.05;
+      } 
+      elseif(preg_match("/^(?:$str|(\d+(\.\d+)?([eE]\d+)?)|true|false|null)$/",
+        $src_)) 
+      {
+        // just a string or number or value
+        $p += 0.1;
+      } 
+    }
+    return $p;
+
+
+  }
+  
+}