PHP Expression::parse方法代码示例

 /**
  * @covers Phramework\Testphase\Expression::parse
  * @dataProvider parseProvider
  */
 public function testParse($input, $expected)
 {
     $return = Expression::parse($input);
     if ($expected !== null) {
         $this->assertInternalType('object', $return);
     }
     $this->assertEquals($expected, $return);
 }

 function testSimplePlus()
 {
     $e = new Expression();
     $e->parse('x + y');
     $this->assertTrue($e->is_operator());
     $this->assertTrue($e->is_function());
     $this->assertFalse($e->is_number());
     $this->assertEqual($e->fun, '+');
     $this->assertEqual(sizeof($e->terms), 2);
     $this->assertEqual($e->terms[0]->fun, 'x');
     $this->assertEqual($e->terms[1]->fun, 'y');
     $this->assertEqual($e->terms[0]->op, '');
     $this->assertEqual($e->terms[1]->op, '+');
 }

function latex($str)
{
    $e1 = new Expression();
    $e1->parse($str);
    return $e1->latex();
}

 /**
  * Parse the CSS
  *
  * @return string - The processes css file as a string
  * @author Anthony Short
  **/
 public static function parse_css()
 {
     # If the cache is stale or doesn't exist
     if (self::config('core.cache.mod_time') <= self::config('core.request.mod_time')) {
         # Start the timer
         Benchmark::start("parse_css");
         # Compress it before parsing
         CSS::compress(CSS::$css);
         # Import CSS files
         Import::parse();
         if (self::config('core.auto_include_mixins') === true) {
             # Import the mixins in the plugin/module folders
             Mixins::import_mixins('framework/mixins');
         }
         # Parse our css through the plugins
         foreach (self::$plugins as $plugin) {
             call_user_func(array($plugin, 'import_process'));
         }
         # Compress it before parsing
         CSS::compress(CSS::$css);
         # Parse the constants
         Constants::parse();
         foreach (self::$plugins as $plugin) {
             call_user_func(array($plugin, 'pre_process'));
         }
         # Parse the @grid
         Layout::parse_grid();
         # Replace the constants
         Constants::replace();
         # Parse @for loops
         Iteration::parse();
         foreach (self::$plugins as $plugin) {
             call_user_func(array($plugin, 'process'));
         }
         # Compress it before parsing
         CSS::compress(CSS::$css);
         # Parse the mixins
         Mixins::parse();
         # Find missing constants
         Constants::replace();
         # Compress it before parsing
         CSS::compress(CSS::$css);
         foreach (self::$plugins as $plugin) {
             call_user_func(array($plugin, 'post_process'));
         }
         # Parse the expressions
         Expression::parse();
         # Parse the nested selectors
         NestedSelectors::parse();
         # Convert all url()'s to absolute paths if required
         if (self::config('core.absolute_urls') === true) {
             CSS::convert_to_absolute_urls();
         }
         # Replaces url()'s that start with ~ to lead to the CSS directory
         CSS::replace_css_urls();
         # Add the extra string we've been storing
         CSS::$css .= CSS::$append;
         # If they want to minify it
         if (self::config('core.minify_css') === true) {
             Minify::compress();
         } else {
             CSS::pretty();
         }
         # Formatting hook
         foreach (self::$plugins as $plugin) {
             call_user_func(array($plugin, 'formatting_process'));
         }
         # Validate the CSS
         if (self::config('core.validate') === true) {
             Validate::check();
         }
         # Stop the timer...
         Benchmark::stop("parse_css");
         if (self::config('core.show_header') === TRUE) {
             CSS::$css = "/* Processed by CSScaffold on " . gmdate('r') . " in " . Benchmark::get("parse_css", "time") . " seconds */\n\n" . CSS::$css;
         }
         # Write the css file to the cache
         self::cache_write(CSS::$css);
         # Output process hook for plugins to display views.
         # Doesn't run in production mode.
         if (!IN_PRODUCTION) {
             foreach (array_merge(self::$plugins, self::$modules) as $plugin) {
                 call_user_func(array($plugin, 'output'));
             }
         }
     }
 }

                 array_push($x_arr, $x_first);
             }
             array_push($x_arr, $x);
             $empty = false;
         }
     }
     $xvalues = $x_arr;
     if (sizeof($xvalues) > 0) {
         $yvalues = $spline->calc_array($xvalues);
     } else {
         $yvalues = array();
     }
     //exit('{status:"stuff",data:[],x:'.json_encode($xvalues).',y:'.json_encode($yvalues).',pnt:'.json_encode($points).'}');
 } else {
     $expr = new Expression();
     $expr->parse($expr_str);
     $yvalues = $expr->eval_double_array(array(), 'x', $xvalues);
 }
 $m = sizeof($xvalues);
 if ($m == 0) {
     exit('{status:"OK?",data:[]}');
 }
 if ($m != sizeof($yvalues)) {
     exit('{status:"error",value:"X-Y mismatch"}');
 }
 for ($i = 0; $i < $m; $i += 1) {
     array_push($data, array($xvalues[$i], $yvalues[$i]));
 }
 if ($intv > 0) {
     $fun .= ',';
 }