Fix ? : precedence

VMXTemplate.php

@@ -7,12 +7,12 @@
  *
  * Homepage: http://yourcmc.ru/wiki/VMX::Template
  * License: GNU GPLv3 or later
- * Author: Vitaliy Filippov, 2006-2015
+ * Author: Vitaliy Filippov, 2006-2020
- * Version: V3 (LALR), 2015-04-12
+ * Version: V3 (LALR), 2020-01-01
  *
  * The template engine is split into two parts:
  * (1) This file - always used when running templates
- * (2) template.parser.php - used only when compiling new templates
+ * (2) VMXTemplateCompiler.php - used only when compiling new templates
  */
 
 /**
@@ -49,6 +49,9 @@ if (!defined('TS_UNIX'))
 
 class VMXTemplate
 {
+    // Loaded template class names
+    public static $loadedClasses = [];
+
     static $Mon, $mon, $Wday;
     static $cache_type  = NULL;
     static $cache       = array();
@@ -230,16 +233,17 @@ class VMXTemplate
 
     /**
      * parse_real variant that does not require $vars to be an lvalue
+     * and does not run filters on output
      */
     protected function parse_discard($fn, $inline, $func, $vars = NULL)
     {
-        return $this->parse_real($fn, $inline, $func, $vars);
+        return $this->parse_real($fn, $inline, $func, $vars, false);
     }
 
     /**
      * "Real" parse function, handles all parse_*()
      */
-    protected function parse_real($fn, $inline, $func, &$vars = NULL)
+    protected function parse_real($fn, $inline, $func, &$vars = NULL, $run_filters = true)
     {
         if (!$fn)
         {
@@ -325,7 +329,7 @@ class VMXTemplate
         {
             error_reporting($old);
         }
-        if ($this->options->filters)
+        if ($run_filters && $this->options->filters)
         {
             $filters = $this->options->filters;
             if (is_callable($filters) || is_string($filters) && is_callable(array(__CLASS__, "filter_$filters")))
@@ -348,6 +352,40 @@ class VMXTemplate
         return $t;
     }
 
+    /**
+     * Translate template file line number from stack frame $frame (taken from debug_backtrace())
+     */
+    public function translateLine(&$frame)
+    {
+        if (isset(VMXTemplate::$loadedClasses[$frame['file']]))
+        {
+            $class = VMXTemplate::$loadedClasses[$frame['file']];
+            if (isset($class::$smap))
+            {
+                $l = $frame['line'];
+                $s = 0;
+                $e = count($class::$smap);
+                while ($e > $s+1)
+                {
+                    if ($l < $class::$smap[($e+$s)>>1][0])
+                        $e = ($e+$s)>>1;
+                    else
+                        $s = ($e+$s)>>1;
+                }
+                $frame['file'] = $class::$template_filename;
+                $frame['line'] = $class::$smap[$s][1];
+            }
+        }
+        if (!empty($frame['class']) && substr($frame['class'], 0, 9) == 'Template_')
+        {
+            $class = $frame['class'];
+            $frame['class'] = $class::$template_filename;
+            $frame['type'] = '->';
+            if (substr($frame['function'], 0, 3) == 'fn_')
+                $frame['function'] = substr($frame['function'], 3);
+        }
+    }
+
     /**
      * Load file (with caching)
      *
@@ -424,12 +462,15 @@ class VMXTemplate
             $func_ns = md5($fn);
         }
 
+        if ($this->options->strip_space)
+            self::filter_strip_space($code);
         if (!$this->compiler)
         {
-            require_once(dirname(__FILE__).'/template.parser.php');
+            require_once(dirname(__FILE__).'/VMXTemplateCompiler.php');
             $this->compiler = new VMXTemplateCompiler($this->options);
         }
         $compiled = $this->compiler->parse_all($code, $fn, $func_ns);
+        $compiled .= "VMXTemplate::\$loadedClasses['".addcslashes(realpath(dirname($file)).'/'.basename($file), '\\\'')."'] = 'Template_$func_ns';\n";
         if (!file_put_contents($file, $compiled))
         {
             throw new VMXTemplateException("Failed writing $file");
@@ -460,7 +501,7 @@ class VMXTemplate
         {
             // FIXME maybe do it better!
             $fn = $this->function_search_path[$block][0][0];
-            return $this->parse_real($fn, NULL, $block, $args);
+            return $this->parse_real($fn, NULL, $block, $args, false);
         }
         throw new VMXTemplateException("Unknown block '$block'$errorinfo");
     }
@@ -471,7 +512,7 @@ class VMXTemplate
         {
             $fun = $this->function_search_path[$block][0];
             $args = array_combine($fun[1], array_pad(array_slice($args, 0, count($fun[1])), count($fun[1]), NULL));
-            return $this->parse_real($fun[0], NULL, $block, $args);
+            return $this->parse_real($fun[0], NULL, $block, $args, false);
         }
         throw new VMXTemplateException("Unknown block or function '$block'$errorinfo");
     }
@@ -556,7 +597,14 @@ class VMXTemplate
     static function exec_subst($str)
     {
         $args = func_get_args();
-        $str = preg_replace_callback('/(?<!\\\\)((?:\\\\\\\\)*)\$(?:([1-9]\d*)|\{([1-9]\d*)\})/is', create_function('$m', 'return $args[$m[2]?$m[2]:$m[3]];'), $str);
+        $str = preg_replace_callback(
+            '/(?<!\\\\)((?:\\\\\\\\)*)\$(?:([1-9]\d*)|\{([1-9]\d*)\})/is',
+            function($m) use($args)
+            {
+                return $args[$m[2] ? $m[2] : $m[3]];
+            },
+            $str
+        );
         return $str;
     }
 
@@ -584,11 +632,11 @@ class VMXTemplate
     }
 
     // For a hash, returns an array with pairs { key => 'key', value => 'value' }
-    static function exec_pairs($array)
+    static function exec_pairs($array, $kf = 'key', $vf = 'value')
     {
         $r = array();
         foreach ($array as $k => $v)
-            $r[] = array('key' => $k, 'value' => $v);
+            $r[] = array($kf => $k, $vf => $v);
         return $r;
     }
 
@@ -784,22 +832,18 @@ class VMXTemplateOptions
                 $this->$k = $v;
             }
         }
-        if ($this->strip_space && array_search('strip_space', $this->filters) === false)
-        {
-            $this->filters[] = 'strip_space';
-        }
         if (!$this->begin_subst || !$this->end_subst)
         {
             $this->begin_subst = false;
             $this->end_subst = false;
             $this->no_code_subst = false;
         }
-        $this->cache_dir = preg_replace('!/*$!s', '/', $this->cache_dir);
+        $this->cache_dir = preg_replace('!([^/])/*$!s', '\1/', $this->cache_dir);
         if (!is_writable($this->cache_dir))
         {
             throw new VMXTemplateException('VMXTemplate: cache_dir='.$this->cache_dir.' is not writable');
         }
-        $this->root = preg_replace('!/*$!s', '/', $this->root);
+        $this->root = preg_replace('!([^/])/*$!s', '\1/', $this->root);
     }
 
     function __destruct()

compile.sh

@@ -1,14 +1,14 @@
 #!/bin/sh
 
 if [ "$LIME_DIR" = "" ]; then
-    LIME_DIR=~/gits/lime/
+    LIME_DIR=./lime/
 fi
 
 php -d xdebug.max_nesting_level=200 $LIME_DIR/lime.php template.lime | tail -n +2 > template.class
-LINES=`grep -n -h " \*\*\* DON'T EDIT THIS FILE! \*\*\*" template.parser.php | perl -pe 's/(\d+):.*/$1-2/e'`
+LINES=`grep -n -h " \*\*\* DON'T EDIT THIS FILE! \*\*\*" VMXTemplateCompiler.php | perl -pe 's/(\d+):.*/$1-2/e'`
 if [ "$LINES" != "" ]; then
-    head -n $LINES template.parser.php | cat - template.class > template.parser.php.new
+    head -n $LINES VMXTemplateCompiler.php | cat - template.class > VMXTemplateCompiler.php.new
 else
-    cat template.parser.php template.class > template.parser.php.new
+    cat VMXTemplateCompiler.php template.class > VMXTemplateCompiler.php.new
 fi
-mv template.parser.php.new template.parser.php
+mv VMXTemplateCompiler.php.new VMXTemplateCompiler.php

template.lime

@@ -50,6 +50,8 @@
 %token ">"      "greater than operator '>'"
 %token "<="     "less or equal operator '<='"
 %token ">="     "greater or equal operator '>='"
+%token "?"      "ternary operator '? :'"
+%token ":"      "ternary operator '? :'"
 %token "+"      "plus operator '+'"
 %token "-"      "minus operator '-'"
 %token "*"      "multiply operator '*'"
@@ -71,6 +73,7 @@
 %token "}}"     "substitution end"
 
 %left ".."
+%nonassoc "?" ":"
 %left "||" "OR" "XOR"
 %left "&&" "AND"
 %nonassoc "==" "!=" "<" ">" "<=" ">="
@@ -89,7 +92,7 @@ chunks = {
     $$ = '';
   }
 | chunks chunk {
-    $$ = $1 . $2;
+    $$ = $1 . "# line ".$this->template->lexer->lineno."\n" . $2;
   }
 .
 chunk = literal {
@@ -140,7 +143,7 @@ c_fn = fn name/name "(" arglist/args ")" "=" exp/exp {
     $this->template->st->functions[$name] = array(
       'name' => $name,
       'args' => $args,
-      'body' => 'function fn_'.$name." () {\nreturn ".$exp.";\n}\n",
+      'body' => 'function fn_'.$name." () {\nreturn ".$exp[0].";\n}\n",
       //'line' => $line, Ой, я чо - аргументы не юзаю?
       //'pos' => $pos,
     );
@@ -196,6 +199,9 @@ exp: exp/a ".." exp/b {
 | exp/a "AND" exp/b {
     $$ = [ '(' . $a[0] . ' && ' . $b[0] . ')', true ];
   }
+| exp/a "?" exp/b ":" exp/c {
+    $$ = [ '(' . $a[0] . ' ? ' . $b[0] . ' : ' . $c[0] . ')', $b[1] && $c[1] ];
+  }
 | exp/a "==" exp/b {
     $$ = [ '(' . $a[0] . ' == ' . $b[0] . ')', true ];
   }