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<?php |
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/** |
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* @author Todd Burry <[email protected]> |
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* @copyright 2009-2017 Vanilla Forums Inc. |
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* @license MIT |
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*/ |
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namespace Ebi; |
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use DOMAttr; |
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use DOMElement; |
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use DOMNode; |
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use Symfony\Component\ExpressionLanguage\SyntaxError; |
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class Compiler { |
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const T_IF = 'x-if'; |
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const T_EACH = 'x-each'; |
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const T_WITH = 'x-with'; |
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const T_LITERAL = 'x-literal'; |
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const T_AS = 'x-as'; |
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const T_COMPONENT = 'x-component'; |
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const T_CHILDREN = 'x-children'; |
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const T_BLOCK = 'x-block'; |
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const T_ELSE = 'x-else'; |
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const T_EMPTY = 'x-empty'; |
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const T_X = 'x'; |
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const T_INCLUDE = 'x-include'; |
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const T_EBI = 'ebi'; |
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const T_UNESCAPE = 'x-unescape'; |
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const T_TAG = 'x-tag'; |
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const IDENT_REGEX = '`^([a-z0-9-]+)$`i'; |
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protected static $special = [ |
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self::T_COMPONENT => 1, |
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self::T_IF => 2, |
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self::T_ELSE => 3, |
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self::T_EACH => 4, |
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self::T_EMPTY => 5, |
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self::T_CHILDREN => 6, |
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self::T_INCLUDE => 7, |
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self::T_WITH => 8, |
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self::T_BLOCK => 9, |
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self::T_LITERAL => 10, |
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self::T_AS => 11, |
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self::T_UNESCAPE => 12, |
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self::T_TAG => 13 |
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]; |
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protected static $htmlTags = [ |
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'a' => 'i', |
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'abbr' => 'i', |
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'acronym' => 'i', // deprecated |
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'address' => 'b', |
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// 'applet' => 'i', // deprecated |
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'area' => 'i', |
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'article' => 'b', |
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'aside' => 'b', |
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'audio' => 'i', |
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'b' => 'i', |
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'base' => 'i', |
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// 'basefont' => 'i', |
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'bdi' => 'i', |
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'bdo' => 'i', |
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// 'bgsound' => 'i', |
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// 'big' => 'i', |
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'x' => 'i', |
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// 'blink' => 'i', |
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'blockquote' => 'b', |
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'body' => 'b', |
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'br' => 'i', |
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'button' => 'i', |
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'canvas' => 'b', |
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'caption' => 'i', |
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// 'center' => 'b', |
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'cite' => 'i', |
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'code' => 'i', |
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'col' => 'i', |
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'colgroup' => 'i', |
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// 'command' => 'i', |
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'content' => 'i', |
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'data' => 'i', |
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'datalist' => 'i', |
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'dd' => 'b', |
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'del' => 'i', |
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'details' => 'i', |
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'dfn' => 'i', |
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'dialog' => 'i', |
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// 'dir' => 'i', |
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'div' => 'i', |
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'dl' => 'b', |
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'dt' => 'b', |
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// 'element' => 'i', |
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'em' => 'i', |
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'embed' => 'i', |
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'fieldset' => 'b', |
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'figcaption' => 'b', |
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'figure' => 'b', |
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// 'font' => 'i', |
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'footer' => 'b', |
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'form' => 'b', |
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'frame' => 'i', |
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'frameset' => 'i', |
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'h1' => 'b', |
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'h2' => 'b', |
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'h3' => 'b', |
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'h4' => 'b', |
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'h5' => 'b', |
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'h6' => 'b', |
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'head' => 'b', |
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'header' => 'b', |
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'hgroup' => 'b', |
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'hr' => 'b', |
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'html' => 'b', |
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'i' => 'i', |
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'iframe' => 'i', |
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'image' => 'i', |
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'img' => 'i', |
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'input' => 'i', |
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'ins' => 'i', |
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'isindex' => 'i', |
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'kbd' => 'i', |
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'keygen' => 'i', |
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'label' => 'i', |
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'legend' => 'i', |
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'li' => 'i', |
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'link' => 'i', |
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// 'listing' => 'i', |
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'main' => 'b', |
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'map' => 'i', |
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'mark' => 'i', |
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// 'marquee' => 'i', |
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'menu' => 'i', |
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'menuitem' => 'i', |
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'meta' => 'i', |
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'meter' => 'i', |
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'multicol' => 'i', |
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'nav' => 'b', |
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'nobr' => 'i', |
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'noembed' => 'i', |
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'noframes' => 'i', |
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'noscript' => 'b', |
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'object' => 'i', |
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'ol' => 'b', |
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'optgroup' => 'i', |
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'option' => 'b', |
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'output' => 'i', |
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'p' => 'b', |
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'param' => 'i', |
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'picture' => 'i', |
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// 'plaintext' => 'i', |
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'pre' => 'b', |
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'progress' => 'i', |
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'q' => 'i', |
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'rp' => 'i', |
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'rt' => 'i', |
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'rtc' => 'i', |
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'ruby' => 'i', |
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's' => 'i', |
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'samp' => 'i', |
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'script' => 'i', |
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'section' => 'b', |
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'select' => 'i', |
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// 'shadow' => 'i', |
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'slot' => 'i', |
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'small' => 'i', |
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'source' => 'i', |
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// 'spacer' => 'i', |
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'span' => 'i', |
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// 'strike' => 'i', |
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'strong' => 'i', |
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'style' => 'i', |
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'sub' => 'i', |
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'summary' => 'i', |
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'sup' => 'i', |
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'table' => 'b', |
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'tbody' => 'i', |
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'td' => 'i', |
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'template' => 'i', |
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'textarea' => 'i', |
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'tfoot' => 'b', |
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'th' => 'i', |
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'thead' => 'i', |
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'time' => 'i', |
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'title' => 'i', |
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'tr' => 'i', |
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'track' => 'i', |
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// 'tt' => 'i', |
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'u' => 'i', |
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'ul' => 'b', |
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'var' => 'i', |
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'video' => 'b', |
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'wbr' => 'i', |
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/// SVG /// |
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'animate' => 's', |
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'animateColor' => 's', |
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'animateMotion' => 's', |
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'animateTransform' => 's', |
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// 'canvas' => 's', |
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'circle' => 's', |
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'desc' => 's', |
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'defs' => 's', |
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'discard' => 's', |
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'ellipse' => 's', |
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'g' => 's', |
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// 'image' => 's', |
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'line' => 's', |
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'marker' => 's', |
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'mask' => 's', |
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'missing-glyph' => 's', |
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'mpath' => 's', |
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'metadata' => 's', |
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'path' => 's', |
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'pattern' => 's', |
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'polygon' => 's', |
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'polyline' => 's', |
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'rect' => 's', |
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'set' => 's', |
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'svg' => 's', |
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'switch' => 's', |
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'symbol' => 's', |
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'text' => 's', |
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// 'unknown' => 's', |
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'use' => 's', |
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]; |
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protected static $boolAttributes = [ |
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'checked' => 1, |
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'itemscope' => 1, |
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'required' => 1, |
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'selected' => 1, |
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]; |
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/** |
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* @var ExpressionLanguage |
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*/ |
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protected $expressions; |
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public function __construct() { |
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$this->expressions = new ExpressionLanguage(); |
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$this->expressions->setNamePattern('/[@a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A'); |
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$this->expressions->register( |
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'hasChildren', |
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function ($name = null) { |
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return empty($name) ? 'isset($children[0])' : "isset(\$children[$name ?: 0])"; |
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}, |
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function ($name = null) { |
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return false; |
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}); |
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} |
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/** |
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* Register a runtime function. |
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* |
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* @param string $name The name of the function. |
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* @param callable $function The function callback. |
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*/ |
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public function defineFunction($name, $function = null) { |
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if ($function === null) { |
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$function = $name; |
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} |
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$this->expressions->register( |
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$name, |
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$this->getFunctionCompiler($name, $function), |
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$this->getFunctionEvaluator($function) |
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); |
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} |
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private function getFunctionEvaluator($function) { |
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if ($function === 'empty') { |
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return function ($expr) { |
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return empty($expr); |
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}; |
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} elseif ($function === 'isset') { |
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return function ($expr) { |
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return isset($expr); |
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}; |
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} |
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return $function; |
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} |
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private function getFunctionCompiler($name, $function) { |
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$var = var_export(strtolower($name), true); |
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$fn = function (...$args) use ($var) { |
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return "\$this->call($var, ".implode(', ', $args).')'; |
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}; |
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if (is_string($function)) { |
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$fn = function (...$args) use ($function) { |
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return $function.'('.implode(', ', $args).')'; |
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}; |
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} elseif (is_array($function)) { |
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if (is_string($function[0])) { |
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$fn = function (...$args) use ($function) { |
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return "$function[0]::$function[1](".implode(', ', $args).')'; |
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}; |
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} elseif ($function[0] instanceof Ebi) { |
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$fn = function (...$args) use ($function) { |
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return "\$this->$function[1](".implode(', ', $args).')'; |
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}; |
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} |
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} |
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return $fn; |
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} |
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public function compile($src, array $options = []) { |
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$options += ['basename' => '', 'path' => '', 'runtime' => true]; |
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$src = trim($src); |
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$out = new CompilerBuffer(); |
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$out->setBasename($options['basename']); |
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$out->setSource($src); |
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$out->setPath($options['path']); |
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$dom = new \DOMDocument(); |
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$fragment = false; |
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if (strpos($src, '<html') === false) { |
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$src = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><html><body>$src</body></html>"; |
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$fragment = true; |
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} |
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libxml_use_internal_errors(true); |
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$dom->loadHTML($src, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD | LIBXML_NOCDATA | LIBXML_NOXMLDECL); |
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// $arr = $this->domToArray($dom); |
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if ($options['runtime']) { |
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$name = var_export($options['basename'], true); |
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$out->appendCode("\$this->defineComponent($name, function (\$props = [], \$children = []) {\n"); |
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} else { |
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$out->appendCode("function (\$props = [], \$children = []) {\n"); |
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} |
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$out->pushScope(['this' => 'props']); |
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$out->indent(+1); |
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$parent = $fragment ? $dom->firstChild->nextSibling->firstChild : $dom; |
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345
|
78 |
|
foreach ($parent->childNodes as $node) { |
346
|
78 |
|
$this->compileNode($node, $out); |
347
|
70 |
|
} |
348
|
|
|
|
349
|
70 |
|
$out->indent(-1); |
350
|
70 |
|
$out->popScope(); |
351
|
|
|
|
352
|
70 |
|
if ($options['runtime']) { |
353
|
69 |
|
$out->appendCode("});"); |
354
|
69 |
|
} else { |
355
|
1 |
|
$out->appendCode("};"); |
356
|
|
|
} |
357
|
|
|
|
358
|
70 |
|
$r = $out->flush(); |
359
|
|
|
|
360
|
70 |
|
$errs = libxml_get_errors(); |
|
|
|
|
361
|
|
|
|
362
|
70 |
|
return $r; |
363
|
|
|
} |
364
|
|
|
|
365
|
57 |
|
protected function isComponent($tag) { |
366
|
57 |
|
return !isset(static::$htmlTags[$tag]); |
367
|
|
|
} |
368
|
|
|
|
369
|
78 |
|
protected function compileNode(DOMNode $node, CompilerBuffer $out) { |
370
|
78 |
|
if ($out->getNodeProp($node, 'skip')) { |
371
|
4 |
|
return; |
372
|
|
|
} |
373
|
|
|
|
374
|
78 |
|
switch ($node->nodeType) { |
375
|
78 |
|
case XML_TEXT_NODE: |
376
|
64 |
|
$this->compileTextNode($node, $out); |
377
|
64 |
|
break; |
378
|
73 |
|
case XML_ELEMENT_NODE: |
379
|
|
|
/* @var \DOMElement $node */ |
380
|
73 |
|
$this->compileElementNode($node, $out); |
381
|
66 |
|
break; |
382
|
4 |
|
case XML_COMMENT_NODE: |
383
|
|
|
/* @var \DOMComment $node */ |
384
|
1 |
|
$this->compileCommentNode($node, $out); |
385
|
1 |
|
break; |
386
|
3 |
|
case XML_DOCUMENT_TYPE_NODE: |
387
|
1 |
|
$out->echoLiteral("<!DOCTYPE {$node->name}>\n"); |
|
|
|
|
388
|
1 |
|
break; |
389
|
2 |
|
case XML_CDATA_SECTION_NODE: |
390
|
2 |
|
$this->compileTextNode($node, $out); |
391
|
2 |
|
break; |
392
|
|
|
default: |
393
|
|
|
$r = "// Unknown node\n". |
|
|
|
|
394
|
|
|
'// '.str_replace("\n", "\n// ", $node->ownerDocument->saveHTML($node)); |
395
|
72 |
|
} |
396
|
72 |
|
} |
397
|
|
|
|
398
|
|
|
protected function domToArray(DOMNode $root) { |
|
|
|
|
399
|
|
|
$result = []; |
400
|
|
|
|
401
|
|
|
if ($root->hasAttributes()) { |
402
|
|
|
$attrs = $root->attributes; |
403
|
|
|
foreach ($attrs as $attr) { |
404
|
|
|
$result['@attributes'][$attr->name] = $attr->value; |
405
|
|
|
} |
406
|
|
|
} |
407
|
|
|
|
408
|
|
|
if ($root->hasChildNodes()) { |
409
|
|
|
$children = $root->childNodes; |
410
|
|
|
if ($children->length == 1) { |
411
|
|
|
$child = $children->item(0); |
412
|
|
|
if ($child->nodeType == XML_TEXT_NODE) { |
413
|
|
|
$result['_value'] = $child->nodeValue; |
414
|
|
|
return count($result) == 1 |
415
|
|
|
? $result['_value'] |
416
|
|
|
: $result; |
417
|
|
|
} |
418
|
|
|
} |
419
|
|
|
$groups = []; |
420
|
|
|
foreach ($children as $child) { |
421
|
|
|
if (!isset($result[$child->nodeName])) { |
422
|
|
|
$result[$child->nodeName] = $this->domToArray($child); |
423
|
|
|
} else { |
424
|
|
|
if (!isset($groups[$child->nodeName])) { |
425
|
|
|
$result[$child->nodeName] = [$result[$child->nodeName]]; |
426
|
|
|
$groups[$child->nodeName] = 1; |
427
|
|
|
} |
428
|
|
|
$result[$child->nodeName][] = $this->domToArray($child); |
429
|
|
|
} |
430
|
|
|
} |
431
|
|
|
} |
432
|
|
|
|
433
|
|
|
return $result; |
434
|
|
|
} |
435
|
|
|
|
436
|
1 |
|
protected function newline(DOMNode $node, CompilerBuffer $out) { |
437
|
1 |
|
if ($node->previousSibling && $node->previousSibling->nodeType !== XML_COMMENT_NODE) { |
438
|
|
|
$out->appendCode("\n"); |
439
|
|
|
} |
440
|
1 |
|
} |
441
|
|
|
|
442
|
1 |
|
protected function compileCommentNode(\DOMComment $node, CompilerBuffer $out) { |
443
|
1 |
|
$comments = explode("\n", trim($node->nodeValue)); |
444
|
|
|
|
445
|
1 |
|
$this->newline($node, $out); |
446
|
1 |
|
foreach ($comments as $comment) { |
447
|
1 |
|
$out->appendCode("// $comment\n"); |
448
|
1 |
|
} |
449
|
1 |
|
} |
450
|
|
|
|
451
|
66 |
|
protected function compileTextNode(DOMNode $node, CompilerBuffer $out) { |
452
|
66 |
|
$nodeText = $node->nodeValue; |
453
|
|
|
|
454
|
66 |
|
$items = $this->splitExpressions($nodeText); |
455
|
66 |
|
foreach ($items as $i => list($text, $offset)) { |
456
|
66 |
|
if (preg_match('`^{\S`', $text)) { |
457
|
34 |
|
if (preg_match('`^{\s*unescape\((.+)\)\s*}$`', $text, $m)) { |
458
|
4 |
|
$out->echoCode($this->expr($m[1], $out)); |
459
|
4 |
|
} else { |
460
|
|
|
try { |
461
|
31 |
|
$expr = substr($text, 1, -1); |
462
|
31 |
|
$out->echoCode($this->compileEscape($this->expr($expr, $out))); |
463
|
31 |
|
} catch (SyntaxError $ex) { |
464
|
1 |
|
$nodeLineCount = substr_count($nodeText, "\n"); |
|
|
|
|
465
|
1 |
|
$offsetLineCount = substr_count($nodeText, "\n", 0, $offset); |
466
|
1 |
|
$line = $node->getLineNo() - $nodeLineCount + $offsetLineCount; |
|
|
|
|
467
|
1 |
|
throw $out->createCompilerException($node, $ex, ['source' => $expr, 'line' => $line]); |
468
|
|
|
} |
469
|
|
|
} |
470
|
33 |
|
} else { |
471
|
66 |
|
if ($i === 0) { |
472
|
66 |
|
$text = $this->ltrim($text, $node, $out); |
473
|
66 |
|
} |
474
|
66 |
|
if ($i === count($items) - 1) { |
475
|
66 |
|
$text = $this->rtrim($text, $node, $out); |
476
|
66 |
|
} |
477
|
|
|
|
478
|
66 |
|
$out->echoLiteral($text); |
479
|
|
|
} |
480
|
66 |
|
} |
481
|
66 |
|
} |
482
|
|
|
|
483
|
73 |
|
protected function compileElementNode(DOMElement $node, CompilerBuffer $out) { |
484
|
73 |
|
list($attributes, $special) = $this->splitAttributes($node); |
485
|
|
|
|
486
|
73 |
|
if ($node->tagName === 'script' && ((isset($attributes['type']) && $attributes['type']->value === self::T_EBI) || !empty($special[self::T_AS]) || !empty($special[self::T_UNESCAPE]))) { |
487
|
10 |
|
$this->compileExpressionNode($node, $attributes, $special, $out); |
488
|
71 |
|
} elseif (!empty($special) || $this->isComponent($node->tagName)) { |
489
|
46 |
|
$this->compileSpecialNode($node, $attributes, $special, $out); |
490
|
41 |
|
} else { |
491
|
35 |
|
$this->compileBasicElement($node, $attributes, $special, $out); |
492
|
|
|
} |
493
|
66 |
|
} |
494
|
|
|
|
495
|
66 |
|
protected function splitExpressions($value) { |
496
|
66 |
|
$values = preg_split('`({\S[^}]*?})`', $value, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_OFFSET_CAPTURE); |
497
|
66 |
|
return $values; |
498
|
|
|
} |
499
|
|
|
|
500
|
|
|
/** |
501
|
|
|
* Compile the PHP for an expression |
502
|
|
|
* |
503
|
|
|
* @param string $expr The expression to compile. |
504
|
|
|
* @param CompilerBuffer $out The current output buffer. |
505
|
|
|
* @param DOMAttr|null $attr The owner of the expression. |
506
|
|
|
* @return string Returns a string of PHP code. |
507
|
|
|
*/ |
508
|
70 |
|
protected function expr($expr, CompilerBuffer $out, DOMAttr $attr = null) { |
509
|
70 |
|
$names = $out->getScopeVariables(); |
510
|
|
|
|
511
|
|
|
try { |
512
|
|
|
$compiled = $this->expressions->compile($expr, function ($name) use ($names) { |
|
|
|
|
513
|
63 |
|
if (isset($names[$name])) { |
514
|
38 |
|
return $names[$name]; |
515
|
39 |
|
} elseif ($name[0] === '@') { |
516
|
1 |
|
return 'this->meta['.var_export(substr($name, 1), true).']'; |
517
|
|
|
} else { |
518
|
38 |
|
return $names['this'].'['.var_export($name, true).']'; |
519
|
|
|
} |
520
|
70 |
|
}); |
521
|
70 |
|
} catch (SyntaxError $ex) { |
522
|
3 |
|
if ($attr !== null) { |
523
|
1 |
|
throw $out->createCompilerException($attr, $ex); |
524
|
|
|
} else { |
525
|
2 |
|
throw $ex; |
526
|
|
|
} |
527
|
|
|
} |
528
|
|
|
|
529
|
67 |
|
if ($attr !== null && null !== $fn = $this->getAttributeFunction($attr)) { |
530
|
10 |
|
$compiled = call_user_func($fn, $compiled); |
531
|
10 |
|
} |
532
|
|
|
|
533
|
67 |
|
return $compiled; |
534
|
|
|
} |
535
|
|
|
|
536
|
|
|
/** |
537
|
|
|
* Get the compiler function to wrap an attribute. |
538
|
|
|
* |
539
|
|
|
* Attribute functions are regular expression functions, but with a special naming convention. The following naming |
540
|
|
|
* conventions are supported: |
541
|
|
|
* |
542
|
|
|
* - **@tag:attribute**: Applies to an attribute only on a specific tag. |
543
|
|
|
* - **@attribute**: Applies to all attributes with a given name. |
544
|
|
|
* |
545
|
|
|
* @param DOMAttr $attr The attribute to look at. |
546
|
|
|
* @return callable|null A function or **null** if the attribute doesn't have a function. |
547
|
|
|
*/ |
548
|
41 |
|
private function getAttributeFunction(DOMAttr $attr) { |
549
|
41 |
|
$keys = ['@'.$attr->ownerElement->tagName.':'.$attr->name, '@'.$attr->name]; |
550
|
|
|
|
551
|
41 |
|
foreach ($keys as $key) { |
552
|
41 |
|
if (null !== $fn = $this->expressions->getFunctionCompiler($key)) { |
553
|
17 |
|
return $fn; |
554
|
|
|
} |
555
|
41 |
|
} |
556
|
31 |
|
} |
557
|
|
|
|
558
|
|
|
/** |
559
|
|
|
* @param DOMElement $node |
560
|
|
|
*/ |
561
|
73 |
|
protected function splitAttributes(DOMElement $node) { |
562
|
73 |
|
$attributes = []; |
563
|
73 |
|
$special = []; |
|
|
|
|
564
|
|
|
|
565
|
73 |
|
foreach ($node->attributes as $name => $attribute) { |
566
|
69 |
|
if (isset(static::$special[$name])) { |
567
|
50 |
|
$special[$name] = $attribute; |
568
|
50 |
|
} else { |
569
|
33 |
|
$attributes[$name] = $attribute; |
570
|
|
|
} |
571
|
73 |
|
} |
572
|
|
|
|
573
|
|
|
uksort($special, function ($a, $b) { |
574
|
13 |
|
return strnatcmp(static::$special[$a], static::$special[$b]); |
575
|
73 |
|
}); |
576
|
|
|
|
577
|
73 |
|
return [$attributes, $special]; |
578
|
|
|
} |
579
|
|
|
|
580
|
46 |
|
protected function compileSpecialNode(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
581
|
46 |
|
$specialName = key($special); |
582
|
|
|
|
583
|
|
|
switch ($specialName) { |
584
|
46 |
|
case self::T_COMPONENT: |
585
|
10 |
|
$this->compileComponentRegister($node, $attributes, $special, $out); |
586
|
10 |
|
break; |
587
|
46 |
|
case self::T_IF: |
588
|
11 |
|
$this->compileIf($node, $attributes, $special, $out); |
589
|
10 |
|
break; |
590
|
45 |
|
case self::T_EACH: |
591
|
16 |
|
$this->compileEach($node, $attributes, $special, $out); |
592
|
15 |
|
break; |
593
|
33 |
|
case self::T_BLOCK: |
594
|
3 |
|
$this->compileBlock($node, $attributes, $special, $out); |
595
|
2 |
|
break; |
596
|
32 |
|
case self::T_CHILDREN: |
597
|
4 |
|
$this->compileChildBlock($node, $attributes, $special, $out); |
598
|
4 |
|
break; |
599
|
32 |
|
case self::T_INCLUDE: |
600
|
1 |
|
$this->compileComponentInclude($node, $attributes, $special, $out); |
601
|
1 |
|
break; |
602
|
32 |
|
case self::T_WITH: |
603
|
5 |
|
if ($this->isComponent($node->tagName)) { |
604
|
|
|
// With has a special meaning in components. |
605
|
3 |
|
$this->compileComponentInclude($node, $attributes, $special, $out); |
606
|
3 |
|
} else { |
607
|
2 |
|
$this->compileWith($node, $attributes, $special, $out); |
608
|
|
|
} |
609
|
4 |
|
break; |
610
|
30 |
|
case self::T_LITERAL: |
611
|
2 |
|
$this->compileLiteral($node, $attributes, $special, $out); |
612
|
2 |
|
break; |
613
|
28 |
|
case '': |
614
|
24 |
|
if ($this->isComponent($node->tagName)) { |
615
|
10 |
|
$this->compileComponentInclude($node, $attributes, $special, $out); |
616
|
9 |
|
} else { |
617
|
22 |
|
$this->compileElement($node, $attributes, $special, $out); |
618
|
|
|
} |
619
|
23 |
|
break; |
620
|
5 |
|
case self::T_TAG: |
621
|
5 |
|
default: |
622
|
|
|
// This is only a tag node so it just gets compiled as an element. |
623
|
5 |
|
$this->compileBasicElement($node, $attributes, $special, $out); |
624
|
5 |
|
break; |
625
|
|
|
} |
626
|
41 |
|
} |
627
|
|
|
|
628
|
|
|
/** |
629
|
|
|
* Compile component registering. |
630
|
|
|
* |
631
|
|
|
* @param DOMElement $node |
632
|
|
|
* @param $attributes |
633
|
|
|
* @param $special |
634
|
|
|
* @param CompilerBuffer $out |
635
|
|
|
*/ |
636
|
10 |
|
public function compileComponentRegister(DOMElement $node, $attributes, $special, CompilerBuffer $out) { |
637
|
10 |
|
$name = strtolower($special[self::T_COMPONENT]->value); |
638
|
10 |
|
unset($special[self::T_COMPONENT]); |
639
|
|
|
|
640
|
10 |
|
$prev = $out->select($name); |
641
|
|
|
|
642
|
10 |
|
$varName = var_export($name, true); |
643
|
10 |
|
$out->appendCode("\$this->defineComponent($varName, function (\$props = [], \$children = []) {\n"); |
644
|
10 |
|
$out->pushScope(['this' => 'props']); |
645
|
10 |
|
$out->indent(+1); |
646
|
|
|
|
647
|
|
|
try { |
648
|
10 |
|
$this->compileSpecialNode($node, $attributes, $special, $out); |
649
|
10 |
|
} finally { |
650
|
10 |
|
$out->popScope(); |
651
|
10 |
|
$out->indent(-1); |
652
|
10 |
|
$out->appendCode("});"); |
653
|
10 |
|
$out->select($prev); |
654
|
10 |
|
} |
655
|
10 |
|
} |
656
|
|
|
|
657
|
3 |
|
private function compileBlock(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
658
|
|
|
// Blocks must be direct descendants of component includes. |
659
|
3 |
|
if (!$out->getNodeProp($node->parentNode, self::T_INCLUDE)) { |
660
|
1 |
|
throw $out->createCompilerException($node, new \Exception("Blocks must be direct descendants of component includes.")); |
661
|
|
|
} |
662
|
|
|
|
663
|
2 |
|
$name = strtolower($special[self::T_BLOCK]->value); |
664
|
2 |
|
if (empty($name)) { |
665
|
|
|
throw $out->createCompilerException($special[self::T_BLOCK], new \Exception("Block names cannot be empty.")); |
666
|
|
|
} |
667
|
2 |
|
if (!preg_match(self::IDENT_REGEX, $name)) { |
668
|
|
|
throw $out->createCompilerException($special[self::T_BLOCK], new \Exception("The block name isn't a valid identifier.")); |
669
|
|
|
} |
670
|
|
|
|
671
|
2 |
|
unset($special[self::T_BLOCK]); |
672
|
|
|
|
673
|
2 |
|
$prev = $out->select($name, true); |
674
|
|
|
|
675
|
2 |
|
$vars = array_filter(array_unique($out->getScopeVariables())); |
|
|
|
|
676
|
2 |
|
$vars[] = 'children'; |
677
|
2 |
|
$use = '$'.implode(', $', array_unique($vars)); |
|
|
|
|
678
|
|
|
|
679
|
2 |
|
$out->appendCode("function () use ($use) {\n"); |
680
|
2 |
|
$out->pushScope(['this' => 'props']); |
681
|
2 |
|
$out->indent(+1); |
682
|
|
|
|
683
|
|
|
try { |
684
|
2 |
|
$this->compileSpecialNode($node, $attributes, $special, $out); |
685
|
2 |
|
} finally { |
686
|
2 |
|
$out->indent(-1); |
687
|
2 |
|
$out->popScope(); |
688
|
2 |
|
$out->appendCode("}"); |
689
|
2 |
|
$out->select($prev); |
690
|
2 |
|
} |
691
|
|
|
|
692
|
2 |
|
return $out; |
693
|
|
|
} |
694
|
|
|
|
695
|
|
|
/** |
696
|
|
|
* Compile component inclusion and rendering. |
697
|
|
|
* |
698
|
|
|
* @param DOMElement $node |
699
|
|
|
* @param DOMAttr[] $attributes |
700
|
|
|
* @param DOMAttr[] $special |
701
|
|
|
* @param CompilerBuffer $out |
702
|
|
|
*/ |
703
|
14 |
|
protected function compileComponentInclude(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
704
|
|
|
// Mark the node as a component include. |
705
|
14 |
|
$out->setNodeProp($node, self::T_INCLUDE, true); |
706
|
|
|
|
707
|
|
|
// Generate the attributes into a property array. |
708
|
14 |
|
$props = []; |
709
|
14 |
|
foreach ($attributes as $name => $attribute) { |
710
|
|
|
/* @var DOMAttr $attr */ |
711
|
6 |
|
if ($this->isExpression($attribute->value)) { |
712
|
5 |
|
$expr = $this->expr(substr($attribute->value, 1, -1), $out, $attribute); |
713
|
5 |
|
} else { |
714
|
2 |
|
$expr = var_export($attribute->value, true); |
715
|
|
|
} |
716
|
|
|
|
717
|
6 |
|
$props[] = var_export($name, true).' => '.$expr; |
718
|
14 |
|
} |
719
|
14 |
|
$propsStr = '['.implode(', ', $props).']'; |
720
|
|
|
|
721
|
14 |
|
if (isset($special[self::T_WITH])) { |
722
|
3 |
|
$withExpr = $this->expr($special[self::T_WITH]->value, $out, $special[self::T_WITH]); |
723
|
3 |
|
unset($special[self::T_WITH]); |
724
|
|
|
|
725
|
3 |
|
$propsStr = empty($props) ? $withExpr : $propsStr.' + (array)'.$withExpr; |
726
|
14 |
|
} elseif (empty($props)) { |
727
|
|
|
// By default the current context is passed to components. |
728
|
6 |
|
$propsStr = $this->expr('this', $out); |
729
|
6 |
|
} |
730
|
|
|
|
731
|
|
|
// Compile the children blocks. |
732
|
14 |
|
$blocks = $this->compileComponentBlocks($node, $out); |
|
|
|
|
733
|
13 |
|
$blocksStr = $blocks->flush(); |
734
|
|
|
|
735
|
13 |
|
if (isset($special[self::T_INCLUDE])) { |
736
|
1 |
|
$name = $this->expr($special[self::T_INCLUDE]->value, $out, $special[self::T_INCLUDE]); |
737
|
1 |
|
} else { |
738
|
12 |
|
$name = var_export($node->tagName, true); |
739
|
|
|
} |
740
|
|
|
|
741
|
13 |
|
$out->appendCode("\$this->write($name, $propsStr, $blocksStr);\n"); |
742
|
13 |
|
} |
743
|
|
|
|
744
|
|
|
/** |
745
|
|
|
* @param DOMElement $parent |
746
|
|
|
* @return CompilerBuffer |
747
|
|
|
*/ |
748
|
14 |
|
protected function compileComponentBlocks(DOMElement $parent, CompilerBuffer $out) { |
749
|
14 |
|
$blocksOut = new CompilerBuffer(CompilerBuffer::STYLE_ARRAY, [ |
750
|
14 |
|
'baseIndent' => $out->getIndent(), |
751
|
14 |
|
'indent' => $out->getIndent() + 1, |
752
|
14 |
|
'depth' => $out->getDepth(), |
753
|
14 |
|
'scopes' => $out->getAllScopes(), |
754
|
14 |
|
'nodeProps' => $out->getNodePropArray() |
755
|
14 |
|
]); |
756
|
14 |
|
$blocksOut->setSource($out->getSource()); |
757
|
|
|
|
758
|
14 |
|
if ($this->isEmptyNode($parent)) { |
759
|
10 |
|
return $blocksOut; |
760
|
|
|
} |
761
|
|
|
|
762
|
5 |
|
$use = '$'.implode(', $', $blocksOut->getScopeVariables()).', $children'; |
763
|
|
|
|
764
|
5 |
|
$blocksOut->appendCode("function () use ($use) {\n"); |
765
|
5 |
|
$blocksOut->indent(+1); |
766
|
|
|
|
767
|
|
|
try { |
768
|
5 |
|
foreach ($parent->childNodes as $node) { |
769
|
5 |
|
$this->compileNode($node, $blocksOut); |
770
|
4 |
|
} |
771
|
4 |
|
} finally { |
772
|
5 |
|
$blocksOut->indent(-1); |
773
|
5 |
|
$blocksOut->appendCode("}"); |
774
|
5 |
|
} |
775
|
|
|
|
776
|
4 |
|
return $blocksOut; |
777
|
|
|
} |
778
|
|
|
|
779
|
|
|
/** |
780
|
|
|
* Output the source of a node as a PHP comment. |
781
|
|
|
* |
782
|
|
|
* @param DOMElement $node The node to output. |
783
|
|
|
* @param DOMAttr[] $attributes Regular attributes. |
784
|
|
|
* @param DOMAttr[] $special Special attributes. |
785
|
|
|
* @param CompilerBuffer $out The output buffer for the results. |
786
|
|
|
*/ |
787
|
34 |
|
protected function compileTagComment(DOMElement $node, $attributes, $special, CompilerBuffer $out) { |
|
|
|
|
788
|
|
|
// Don't double up comments. |
789
|
34 |
|
if ($node->previousSibling && $node->previousSibling->nodeType === XML_COMMENT_NODE) { |
790
|
|
|
return; |
791
|
|
|
} |
792
|
|
|
|
793
|
34 |
|
$str = '<'.$node->tagName; |
794
|
34 |
|
foreach ($special as $attr) { |
795
|
|
|
/* @var DOMAttr $attr */ |
796
|
34 |
|
$str .= ' '.$attr->name.(empty($attr->value) ? '' : '="'.str_replace('"', '"', $attr->value).'"'); |
797
|
34 |
|
} |
798
|
34 |
|
$str .= '>'; |
|
|
|
|
799
|
34 |
|
$comments = explode("\n", $str); |
800
|
34 |
|
foreach ($comments as $comment) { |
801
|
34 |
|
$out->appendCode("// $comment\n"); |
802
|
34 |
|
} |
803
|
34 |
|
} |
804
|
|
|
|
805
|
|
|
/** |
806
|
|
|
* @param DOMElement $node |
807
|
|
|
* @param DOMAttr[] $attributes |
808
|
|
|
* @param DOMAttr[] $special |
809
|
|
|
* @param CompilerBuffer $out |
810
|
|
|
* @param bool $force |
811
|
|
|
*/ |
812
|
62 |
|
protected function compileOpenTag(DOMElement $node, $attributes, $special, CompilerBuffer $out, $force = false) { |
813
|
62 |
|
$tagNameExpr = !empty($special[self::T_TAG]) ? $special[self::T_TAG]->value : ''; |
814
|
|
|
|
815
|
62 |
|
if ($node->tagName === self::T_X && empty($tagNameExpr)) { |
816
|
6 |
|
return; |
817
|
|
|
} |
818
|
|
|
|
819
|
59 |
|
if (!empty($tagNameExpr)) { |
820
|
5 |
|
$tagNameExpr = $this->expr($tagNameExpr, $out, $special[self::T_TAG]); |
821
|
5 |
|
$tagName = $node->tagName === 'x' ? "''" : var_export($node->tagName, true); |
|
|
|
|
822
|
|
|
|
823
|
5 |
|
$tagVar = $out->depthName('$tag', 1); |
824
|
5 |
|
if ($node->hasChildNodes() || $force) { |
825
|
5 |
|
$out->setNodeProp($node, self::T_TAG, $tagVar); |
826
|
5 |
|
$out->depth(+1); |
827
|
5 |
|
} |
828
|
|
|
|
829
|
5 |
|
$out->appendCode("\n"); |
830
|
5 |
|
$this->compileTagComment($node, $attributes, $special, $out); |
831
|
5 |
|
$out->appendCode("$tagVar = \$this->tagName($tagNameExpr, $tagName);\n"); |
832
|
5 |
|
$out->appendCode("if ($tagVar) {\n"); |
833
|
5 |
|
$out->indent(+1); |
834
|
5 |
|
$out->echoLiteral('<'); |
835
|
5 |
|
$out->echoCode($tagVar); |
836
|
5 |
|
} else { |
837
|
55 |
|
$out->echoLiteral('<'.$node->tagName); |
838
|
|
|
} |
839
|
|
|
|
840
|
|
|
/* @var DOMAttr $attribute */ |
841
|
59 |
|
foreach ($attributes as $name => $attribute) { |
842
|
|
|
// Check for an attribute expression. |
843
|
27 |
|
if ($this->isExpression($attribute->value)) { |
844
|
19 |
|
$out->echoCode( |
845
|
19 |
|
'$this->attribute('.var_export($name, true).', '. |
846
|
19 |
|
$this->expr(substr($attribute->value, 1, -1), $out, $attribute). |
847
|
19 |
|
')'); |
848
|
27 |
|
} elseif (null !== $fn = $this->getAttributeFunction($attribute)) { |
849
|
7 |
|
$value = call_user_func($fn, var_export($attribute->value, true)); |
|
|
|
|
850
|
|
|
|
851
|
7 |
|
$out->echoCode('$this->attribute('.var_export($name, true).', '.$value.')'); |
852
|
9 |
|
} elseif ((empty($attribute->value) || $attribute->value === $name) && isset(self::$boolAttributes[$name])) { |
|
|
|
|
853
|
2 |
|
$out->echoLiteral(' '.$name); |
854
|
2 |
|
} else { |
855
|
4 |
|
$out->echoLiteral(' '.$name.'="'); |
856
|
4 |
|
$out->echoLiteral(htmlspecialchars($attribute->value)); |
857
|
4 |
|
$out->echoLiteral('"'); |
858
|
|
|
} |
859
|
59 |
|
} |
860
|
|
|
|
861
|
59 |
|
if ($node->hasChildNodes() || $force) { |
862
|
57 |
|
$out->echoLiteral('>'); |
863
|
57 |
|
} else { |
864
|
3 |
|
$out->echoLiteral(" />"); |
865
|
|
|
} |
866
|
|
|
|
867
|
59 |
|
if (!empty($tagNameExpr)) { |
868
|
5 |
|
$out->indent(-1); |
869
|
5 |
|
$out->appendCode("}\n\n"); |
870
|
5 |
|
} |
871
|
59 |
|
} |
872
|
|
|
|
873
|
31 |
|
private function isExpression($value) { |
874
|
31 |
|
return preg_match('`^{\S.*}$`', $value); |
875
|
|
|
} |
876
|
|
|
|
877
|
60 |
|
protected function compileCloseTag(DOMElement $node, $special, CompilerBuffer $out, $force = false) { |
|
|
|
|
878
|
60 |
|
if (!$force && !$node->hasChildNodes()) { |
879
|
3 |
|
return; |
880
|
|
|
} |
881
|
|
|
|
882
|
58 |
|
$tagNameExpr = $out->getNodeProp($node, self::T_TAG); //!empty($special[self::T_TAG]) ? $special[self::T_TAG]->value : ''; |
|
|
|
|
883
|
58 |
|
if (!empty($tagNameExpr)) { |
884
|
5 |
|
$out->appendCode("\n"); |
885
|
5 |
|
$out->appendCode("if ($tagNameExpr) {\n"); |
886
|
5 |
|
$out->indent(+1); |
887
|
|
|
|
888
|
5 |
|
$out->echoLiteral('</'); |
889
|
5 |
|
$out->echoCode($tagNameExpr); |
890
|
5 |
|
$out->echoLiteral('>'); |
891
|
5 |
|
$out->indent(-1); |
892
|
5 |
|
$out->appendCode("}\n"); |
893
|
5 |
|
$out->depth(-1); |
894
|
58 |
|
} elseif ($node->tagName !== self::T_X) { |
895
|
51 |
|
$out->echoLiteral("</{$node->tagName}>"); |
896
|
51 |
|
} |
897
|
58 |
|
} |
898
|
|
|
|
899
|
4 |
|
protected function isEmptyText(DOMNode $node) { |
900
|
4 |
|
return $node instanceof \DOMText && empty(trim($node->data)); |
901
|
|
|
} |
902
|
|
|
|
903
|
14 |
|
protected function isEmptyNode(DOMNode $node) { |
904
|
14 |
|
if (!$node->hasChildNodes()) { |
905
|
10 |
|
return true; |
906
|
|
|
} |
907
|
|
|
|
908
|
5 |
|
foreach ($node->childNodes as $childNode) { |
909
|
5 |
|
if ($childNode instanceof DOMElement) { |
910
|
3 |
|
return false; |
911
|
|
|
} |
912
|
2 |
|
if ($childNode instanceof \DOMText && !$this->isEmptyText($childNode)) { |
913
|
2 |
|
return false; |
914
|
|
|
} |
915
|
|
|
} |
916
|
|
|
|
917
|
|
|
return true; |
918
|
|
|
} |
919
|
|
|
|
920
|
11 |
|
protected function compileIf(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
921
|
11 |
|
$this->compileTagComment($node, $attributes, $special, $out); |
922
|
11 |
|
$expr = $this->expr($special[self::T_IF]->value, $out, $special[self::T_IF]); |
923
|
10 |
|
unset($special[self::T_IF]); |
924
|
|
|
|
925
|
10 |
|
$elseNode = $this->findSpecialNode($node, self::T_ELSE, self::T_IF); |
926
|
10 |
|
$out->setNodeProp($elseNode, 'skip', true); |
927
|
|
|
|
928
|
10 |
|
$out->appendCode('if ('.$expr.") {\n"); |
929
|
10 |
|
$out->indent(+1); |
930
|
|
|
|
931
|
10 |
|
$this->compileSpecialNode($node, $attributes, $special, $out); |
932
|
|
|
|
933
|
10 |
|
$out->indent(-1); |
934
|
|
|
|
935
|
10 |
|
if ($elseNode) { |
936
|
2 |
|
list($attributes, $special) = $this->splitAttributes($elseNode); |
937
|
2 |
|
unset($special[self::T_ELSE]); |
938
|
|
|
|
939
|
2 |
|
$out->appendCode("} else {\n"); |
940
|
|
|
|
941
|
2 |
|
$out->indent(+1); |
942
|
2 |
|
$this->compileSpecialNode($elseNode, $attributes, $special, $out); |
943
|
2 |
|
$out->indent(-1); |
944
|
2 |
|
} |
945
|
|
|
|
946
|
10 |
|
$out->appendCode("}\n"); |
947
|
10 |
|
} |
948
|
|
|
|
949
|
16 |
|
protected function compileEach(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
950
|
16 |
|
$this->compileTagComment($node, $attributes, $special, $out); |
951
|
16 |
|
$this->compileOpenTag($node, $attributes, $special, $out); |
952
|
|
|
|
953
|
16 |
|
$emptyNode = $this->findSpecialNode($node, self::T_EMPTY, self::T_ELSE); |
954
|
16 |
|
$out->setNodeProp($emptyNode, 'skip', true); |
955
|
|
|
|
956
|
16 |
|
if ($emptyNode === null) { |
957
|
14 |
|
$this->compileEachLoop($node, $attributes, $special, $out); |
958
|
13 |
|
} else { |
959
|
2 |
|
$expr = $this->expr("empty({$special[self::T_EACH]->value})", $out); |
960
|
|
|
|
961
|
2 |
|
list ($emptyAttributes, $emptySpecial) = $this->splitAttributes($emptyNode); |
962
|
2 |
|
unset($emptySpecial[self::T_EMPTY]); |
963
|
|
|
|
964
|
2 |
|
$out->appendCode('if ('.$expr.") {\n"); |
965
|
|
|
|
966
|
2 |
|
$out->indent(+1); |
967
|
2 |
|
$this->compileSpecialNode($emptyNode, $emptyAttributes, $emptySpecial, $out); |
968
|
2 |
|
$out->indent(-1); |
969
|
|
|
|
970
|
2 |
|
$out->appendCode("} else {\n"); |
971
|
|
|
|
972
|
2 |
|
$out->indent(+1); |
973
|
2 |
|
$this->compileEachLoop($node, $attributes, $special, $out); |
974
|
2 |
|
$out->indent(-1); |
975
|
|
|
|
976
|
2 |
|
$out->appendCode("}\n"); |
977
|
|
|
} |
978
|
|
|
|
979
|
15 |
|
$this->compileCloseTag($node, $special, $out); |
980
|
15 |
|
} |
981
|
|
|
|
982
|
2 |
|
protected function compileWith(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
983
|
2 |
|
$this->compileTagComment($node, $attributes, $special, $out); |
984
|
|
|
|
985
|
2 |
|
$out->depth(+1); |
986
|
2 |
|
$scope = ['this' => $out->depthName('props')]; |
987
|
2 |
|
if (!empty($special[self::T_AS])) { |
988
|
2 |
|
if (preg_match(self::IDENT_REGEX, $special[self::T_AS]->value, $m)) { |
989
|
|
|
// The template specified an x-as attribute to alias the with expression. |
990
|
1 |
|
$scope = [$m[1] => $out->depthName('props')]; |
991
|
1 |
|
} else { |
992
|
1 |
|
throw $out->createCompilerException( |
993
|
1 |
|
$special[self::T_AS], |
994
|
1 |
|
new \Exception("Invalid identifier in x-as attribute.") |
995
|
1 |
|
); |
996
|
|
|
} |
997
|
1 |
|
} |
998
|
1 |
|
$with = $this->expr($special[self::T_WITH]->value, $out); |
999
|
|
|
|
1000
|
1 |
|
unset($special[self::T_WITH], $special[self::T_AS]); |
1001
|
|
|
|
1002
|
1 |
|
$out->pushScope($scope); |
1003
|
1 |
|
$out->appendCode('$'.$out->depthName('props')." = $with;\n"); |
1004
|
|
|
|
1005
|
1 |
|
$this->compileSpecialNode($node, $attributes, $special, $out); |
1006
|
|
|
|
1007
|
1 |
|
$out->depth(-1); |
1008
|
1 |
|
$out->popScope(); |
1009
|
1 |
|
} |
1010
|
|
|
|
1011
|
2 |
|
protected function compileLiteral(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
1012
|
2 |
|
$this->compileTagComment($node, $attributes, $special, $out); |
1013
|
2 |
|
unset($special[self::T_LITERAL]); |
1014
|
|
|
|
1015
|
2 |
|
$this->compileOpenTag($node, $attributes, $special, $out); |
1016
|
|
|
|
1017
|
2 |
|
foreach ($node->childNodes as $childNode) { |
1018
|
2 |
|
$html = $childNode->ownerDocument->saveHTML($childNode); |
1019
|
2 |
|
$out->echoLiteral($html); |
1020
|
2 |
|
} |
1021
|
|
|
|
1022
|
2 |
|
$this->compileCloseTag($node, $special, $out); |
1023
|
2 |
|
} |
1024
|
|
|
|
1025
|
22 |
|
protected function compileElement(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
1026
|
22 |
|
$this->compileOpenTag($node, $attributes, $special, $out); |
1027
|
|
|
|
1028
|
22 |
|
foreach ($node->childNodes as $childNode) { |
1029
|
22 |
|
$this->compileNode($childNode, $out); |
1030
|
22 |
|
} |
1031
|
|
|
|
1032
|
22 |
|
$this->compileCloseTag($node, $special, $out); |
1033
|
22 |
|
} |
1034
|
|
|
|
1035
|
|
|
/** |
1036
|
|
|
* Find a special node in relation to another node. |
1037
|
|
|
* |
1038
|
|
|
* This method is used to find things such as x-empty and x-else elements. |
1039
|
|
|
* |
1040
|
|
|
* @param DOMElement $node The node to search in relation to. |
1041
|
|
|
* @param string $attribute The name of the attribute to search for. |
1042
|
|
|
* @param string $parentAttribute The name of the parent attribute to resolve conflicts. |
1043
|
|
|
* @return DOMElement|null Returns the found element node or **null** if not found. |
1044
|
|
|
*/ |
1045
|
25 |
|
protected function findSpecialNode(DOMElement $node, $attribute, $parentAttribute) { |
1046
|
|
|
// First look for a sibling after the node. |
1047
|
25 |
|
for ($sibNode = $node->nextSibling; $sibNode !== null; $sibNode = $sibNode->nextSibling) { |
1048
|
2 |
|
if ($sibNode instanceof DOMElement && $sibNode->hasAttribute($attribute)) { |
1049
|
2 |
|
return $sibNode; |
1050
|
|
|
} |
1051
|
|
|
|
1052
|
|
|
// Stop searching if we encounter another node. |
1053
|
2 |
|
if (!$this->isEmptyText($sibNode)) { |
1054
|
|
|
break; |
1055
|
|
|
} |
1056
|
2 |
|
} |
1057
|
|
|
|
1058
|
|
|
// Next look inside the node. |
1059
|
23 |
|
$parentFound = false; |
1060
|
23 |
|
foreach ($node->childNodes as $childNode) { |
1061
|
22 |
|
if (!$parentFound && $childNode instanceof DOMElement && $childNode->hasAttribute($attribute)) { |
1062
|
2 |
|
return $childNode; |
1063
|
|
|
} |
1064
|
|
|
|
1065
|
22 |
|
if ($childNode instanceof DOMElement) { |
1066
|
16 |
|
$parentFound = $childNode->hasAttribute($parentAttribute); |
1067
|
22 |
|
} elseif ($childNode instanceof \DOMText && !empty(trim($childNode->data))) { |
1068
|
6 |
|
$parentFound = false; |
1069
|
6 |
|
} |
1070
|
23 |
|
} |
1071
|
|
|
|
1072
|
21 |
|
return null; |
1073
|
|
|
} |
1074
|
|
|
|
1075
|
|
|
/** |
1076
|
|
|
* @param DOMElement $node |
1077
|
|
|
* @param array $attributes |
1078
|
|
|
* @param array $special |
1079
|
|
|
* @param CompilerBuffer $out |
1080
|
|
|
*/ |
1081
|
16 |
|
private function compileEachLoop(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
|
|
|
|
1082
|
16 |
|
$each = $this->expr($special[self::T_EACH]->value, $out); |
1083
|
16 |
|
unset($special[self::T_EACH]); |
1084
|
|
|
|
1085
|
16 |
|
$as = ['', $out->depthName('props', 1)]; |
|
|
|
|
1086
|
16 |
|
$scope = ['this' => $as[1]]; |
1087
|
16 |
|
if (!empty($special[self::T_AS])) { |
1088
|
9 |
|
if (preg_match('`^(?:([a-z0-9]+)\s+)?([a-z0-9]+)$`i', $special[self::T_AS]->value, $m)) { |
1089
|
8 |
|
$scope = [$m[2] => $as[1]]; |
1090
|
8 |
|
if (!empty($m[1])) { |
1091
|
5 |
|
$scope[$m[1]] = $as[0] = $out->depthName('i', 1); |
1092
|
|
|
|
1093
|
|
|
// Add loop tracking variables. |
1094
|
5 |
|
$d = $out->depthName('', 1); |
1095
|
5 |
|
} |
1096
|
8 |
|
} else { |
1097
|
1 |
|
throw $out->createCompilerException( |
1098
|
1 |
|
$special[self::T_AS], |
1099
|
1 |
|
new \Exception("Invalid identifier in x-as attribute.") |
1100
|
1 |
|
); |
1101
|
|
|
} |
1102
|
8 |
|
} |
1103
|
15 |
|
unset($special[self::T_AS]); |
1104
|
|
|
|
1105
|
15 |
|
if (isset($d)) { |
1106
|
5 |
|
$out->appendCode("\$count$d = count($each);\n"); |
1107
|
5 |
|
$out->appendCode("\$index$d = -1;\n"); |
1108
|
5 |
|
} |
1109
|
|
|
|
1110
|
15 |
|
if (empty($as[0])) { |
1111
|
10 |
|
$out->appendCode("foreach ($each as \${$as[1]}) {\n"); |
1112
|
10 |
|
} else { |
1113
|
5 |
|
$out->appendCode("foreach ($each as \${$as[0]} => \${$as[1]}) {\n"); |
1114
|
|
|
} |
1115
|
15 |
|
$out->depth(+1); |
1116
|
15 |
|
$out->indent(+1); |
1117
|
15 |
|
$out->pushScope($scope); |
1118
|
|
|
|
1119
|
15 |
|
if (isset($d)) { |
1120
|
5 |
|
$out->appendCode("\$index$d++;\n"); |
1121
|
5 |
|
$out->appendCode("\$first$d = \$index$d === 0;\n"); |
1122
|
5 |
|
$out->appendCode("\$last$d = \$index$d === \$count$d - 1;\n"); |
1123
|
5 |
|
} |
1124
|
|
|
|
1125
|
15 |
|
foreach ($node->childNodes as $childNode) { |
1126
|
15 |
|
$this->compileNode($childNode, $out); |
1127
|
15 |
|
} |
1128
|
|
|
|
1129
|
15 |
|
$out->indent(-1); |
1130
|
15 |
|
$out->depth(-1); |
1131
|
15 |
|
$out->popScope(); |
1132
|
15 |
|
$out->appendCode("}\n"); |
1133
|
15 |
|
} |
1134
|
|
|
|
1135
|
66 |
|
protected function ltrim($text, \DOMNode $node, CompilerBuffer $out) { |
|
|
|
|
1136
|
66 |
|
if ($this->inPre($node)) { |
1137
|
|
|
return $text; |
1138
|
|
|
} |
1139
|
|
|
|
1140
|
|
|
|
1141
|
66 |
|
for ($sib = $node->previousSibling; $sib !== null && $this->canSkip($sib, $out); $sib = $sib->previousSibling) { |
|
|
|
|
1142
|
|
|
// |
1143
|
5 |
|
} |
1144
|
66 |
|
if ($sib === null) { |
1145
|
66 |
|
return ltrim($text); |
1146
|
|
|
} |
1147
|
|
|
// if ($this->canSkip($sib, $out)) { |
|
|
|
|
1148
|
|
|
// return ltrim($text); |
1149
|
|
|
// } |
1150
|
|
|
|
1151
|
7 |
|
$text = preg_replace('`^\s*\n\s*`', "\n", $text, -1, $count); |
1152
|
7 |
|
if ($count === 0) { |
1153
|
|
|
$text = preg_replace('`^\s+`', ' ', $text); |
1154
|
|
|
} |
1155
|
|
|
|
1156
|
|
|
// if ($sib !== null && ($sib->nodeType === XML_COMMENT_NODE || in_array($sib->tagName, static::$blocks))) { |
|
|
|
|
1157
|
|
|
// return ltrim($text); |
1158
|
|
|
// } |
1159
|
7 |
|
return $text; |
1160
|
|
|
} |
1161
|
|
|
|
1162
|
|
|
/** |
1163
|
|
|
* Whether or not a node can be skipped for the purposes of trimming whitespace. |
1164
|
|
|
* |
1165
|
|
|
* @param DOMNode|null $node The node to test. |
1166
|
|
|
* @param CompilerBuffer|null $out The compiler information. |
1167
|
|
|
* @return bool Returns **true** if whitespace can be trimmed right up to the node or **false** otherwise. |
1168
|
|
|
*/ |
1169
|
13 |
|
private function canSkip(\DOMNode $node, CompilerBuffer $out) { |
1170
|
13 |
|
if ($out->getNodeProp($node, 'skip')) { |
1171
|
2 |
|
return true; |
1172
|
|
|
} |
1173
|
|
|
|
1174
|
13 |
|
switch ($node->nodeType) { |
1175
|
13 |
|
case XML_TEXT_NODE: |
1176
|
2 |
|
return false; |
1177
|
13 |
|
case XML_COMMENT_NODE: |
1178
|
1 |
|
return true; |
1179
|
13 |
|
case XML_ELEMENT_NODE: |
1180
|
|
|
/* @var \DOMElement $node */ |
1181
|
13 |
|
if ($node->tagName === self::T_X |
1182
|
13 |
|
|| ($node->tagName === 'script' && $node->hasAttribute(self::T_AS)) // expression assignment |
1183
|
12 |
|
|| ($node->hasAttribute(self::T_WITH) && $node->hasAttribute(self::T_AS)) // with assignment |
1184
|
9 |
|
|| ($node->hasAttribute(self::T_BLOCK) || $node->hasAttribute(self::T_COMPONENT)) |
1185
|
13 |
|
) { |
1186
|
6 |
|
return true; |
1187
|
|
|
} |
1188
|
8 |
|
} |
1189
|
|
|
|
1190
|
8 |
|
return false; |
1191
|
|
|
} |
1192
|
|
|
|
1193
|
66 |
|
protected function rtrim($text, \DOMNode $node, CompilerBuffer $out) { |
|
|
|
|
1194
|
66 |
|
if ($this->inPre($node)) { |
1195
|
|
|
return $text; |
1196
|
|
|
} |
1197
|
|
|
|
1198
|
66 |
|
for ($sib = $node->nextSibling; $sib !== null && $this->canSkip($sib, $out); $sib = $sib->nextSibling) { |
|
|
|
|
1199
|
|
|
// |
1200
|
5 |
|
} |
1201
|
66 |
|
if ($sib === null) { |
1202
|
65 |
|
return rtrim($text); |
1203
|
|
|
} |
1204
|
|
|
|
1205
|
5 |
|
$text = preg_replace('`\s*\n\s*$`', "\n", $text, -1, $count); |
1206
|
5 |
|
if ($count === 0) { |
1207
|
5 |
|
$text = preg_replace('`\s+$`', ' ', $text); |
1208
|
5 |
|
} |
1209
|
|
|
|
1210
|
|
|
// if ($sib !== null && ($sib->nodeType === XML_COMMENT_NODE || in_array($sib->tagName, static::$blocks))) { |
|
|
|
|
1211
|
|
|
// return rtrim($text); |
1212
|
|
|
// } |
1213
|
5 |
|
return $text; |
1214
|
|
|
} |
1215
|
|
|
|
1216
|
66 |
|
protected function inPre(\DOMNode $node) { |
1217
|
66 |
|
for ($node = $node->parentNode; $node !== null; $node = $node->parentNode) { |
1218
|
66 |
|
if (in_array($node->nodeType, ['code', 'pre'], true)) { |
1219
|
|
|
return true; |
1220
|
|
|
} |
1221
|
66 |
|
} |
1222
|
66 |
|
return false; |
1223
|
|
|
} |
1224
|
|
|
|
1225
|
4 |
|
private function compileChildBlock(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
1226
|
|
|
/* @var DOMAttr $child */ |
1227
|
4 |
|
$child = $special[self::T_CHILDREN]; |
1228
|
4 |
|
unset($special[self::T_CHILDREN]); |
1229
|
|
|
|
1230
|
4 |
|
$name = $child->value === '' ? 0 : strtolower($child->value); |
1231
|
4 |
|
if ($name !== 0) { |
1232
|
2 |
|
if (empty($name)) { |
1233
|
|
|
throw $out->createCompilerException($special[self::T_BLOCK], new \Exception("Block names cannot be empty.")); |
1234
|
|
|
} |
1235
|
2 |
|
if (!preg_match(self::IDENT_REGEX, $name)) { |
1236
|
|
|
throw $out->createCompilerException($special[self::T_BLOCK], new \Exception("The block name isn't a valid identifier.")); |
1237
|
|
|
} |
1238
|
2 |
|
} |
1239
|
|
|
|
1240
|
4 |
|
$keyStr = var_export($name, true); |
1241
|
|
|
|
1242
|
4 |
|
$this->compileOpenTag($node, $attributes, $special, $out, true); |
1243
|
|
|
|
1244
|
4 |
|
$out->appendCode("\$this->writeChildren(\$children[{$keyStr}]);\n"); |
1245
|
|
|
|
1246
|
4 |
|
$this->compileCloseTag($node, $special, $out, true); |
1247
|
4 |
|
} |
1248
|
|
|
|
1249
|
|
|
/** |
1250
|
|
|
* Compile an `<script type="ebi">` node. |
1251
|
|
|
* |
1252
|
|
|
* @param DOMElement $node The node to compile. |
1253
|
|
|
* @param DOMAttr[] $attributes The node's attributes. |
1254
|
|
|
* @param DOMAttr[] $special An array of special attributes. |
1255
|
|
|
* @param CompilerBuffer $out The compiler output. |
1256
|
|
|
*/ |
1257
|
10 |
|
private function compileExpressionNode(DOMElement $node, array $attributes, array $special, CompilerBuffer $out) { |
|
|
|
|
1258
|
10 |
|
$str = $node->nodeValue; |
1259
|
|
|
|
1260
|
|
|
try { |
1261
|
10 |
|
$expr = $this->expr($str, $out); |
1262
|
10 |
|
} catch (SyntaxError $ex) { |
1263
|
1 |
|
$context = []; |
1264
|
1 |
|
if (preg_match('`^(.*) around position (\d*)\.$`', $ex->getMessage(), $m)) { |
1265
|
1 |
|
$add = substr_count($str, "\n", 0, $m[2]); |
1266
|
|
|
|
1267
|
1 |
|
$context['line'] = $node->getLineNo() + $add; |
1268
|
1 |
|
} |
1269
|
|
|
|
1270
|
1 |
|
throw $out->createCompilerException($node, $ex, $context); |
1271
|
|
|
} |
1272
|
|
|
|
1273
|
9 |
|
if (isset($special[self::T_AS])) { |
1274
|
7 |
|
if (null !== $this->closest($node, function (\DOMNode $n) use ($out) { |
1275
|
7 |
|
return $out->getNodeProp($n, self::T_INCLUDE); |
1276
|
7 |
|
})) { |
1277
|
1 |
|
throw $out->createCompilerException( |
1278
|
1 |
|
$node, |
1279
|
1 |
|
new \Exception("Expressions with x-as assignments cannot be declared inside child blocks.") |
1280
|
1 |
|
); |
1281
|
|
|
} |
1282
|
|
|
|
1283
|
6 |
|
if (preg_match(self::IDENT_REGEX, $special[self::T_AS]->value, $m)) { |
1284
|
|
|
// The template specified an x-as attribute to alias the with expression. |
1285
|
5 |
|
$out->depth(+1); |
1286
|
5 |
|
$scope = [$m[1] => $out->depthName('expr')]; |
1287
|
5 |
|
$out->pushScope($scope); |
1288
|
5 |
|
$out->appendCode('$'.$out->depthName('expr')." = $expr;\n"); |
1289
|
5 |
|
} else { |
1290
|
1 |
|
throw $out->createCompilerException( |
1291
|
1 |
|
$special[self::T_AS], |
1292
|
1 |
|
new \Exception("Invalid identifier in x-as attribute.") |
1293
|
1 |
|
); |
1294
|
|
|
} |
1295
|
7 |
|
} elseif (!empty($special[self::T_UNESCAPE])) { |
1296
|
1 |
|
$out->echoCode($expr); |
1297
|
1 |
|
} else { |
1298
|
1 |
|
$out->echoCode($this->compileEscape($expr)); |
1299
|
|
|
} |
1300
|
7 |
|
} |
1301
|
|
|
|
1302
|
|
|
/** |
1303
|
|
|
* Similar to jQuery's closest method. |
1304
|
|
|
* |
1305
|
|
|
* @param DOMNode $node |
1306
|
|
|
* @param callable $test |
1307
|
|
|
* @return DOMNode |
1308
|
|
|
*/ |
1309
|
7 |
|
private function closest(\DOMNode $node, callable $test) { |
1310
|
7 |
|
for ($visitor = $node; $visitor !== null && !$test($visitor); $visitor = $visitor->parentNode) { |
|
|
|
|
1311
|
|
|
// Do nothing. The logic is all in the loop. |
1312
|
7 |
|
} |
1313
|
7 |
|
return $visitor; |
1314
|
|
|
} |
1315
|
|
|
|
1316
|
|
|
/** |
1317
|
|
|
* @param DOMElement $node |
1318
|
|
|
* @param $attributes |
1319
|
|
|
* @param $special |
1320
|
|
|
* @param CompilerBuffer $out |
1321
|
|
|
*/ |
1322
|
39 |
|
protected function compileBasicElement(DOMElement $node, $attributes, $special, CompilerBuffer $out) { |
1323
|
39 |
|
$this->compileOpenTag($node, $attributes, $special, $out); |
1324
|
|
|
|
1325
|
39 |
|
foreach ($node->childNodes as $childNode) { |
1326
|
37 |
|
$this->compileNode($childNode, $out); |
1327
|
39 |
|
} |
1328
|
|
|
|
1329
|
38 |
|
$this->compileCloseTag($node, $special, $out); |
1330
|
38 |
|
} |
1331
|
|
|
|
1332
|
31 |
|
protected function compileEscape($php) { |
1333
|
|
|
// return 'htmlspecialchars('.$php.')'; |
|
|
|
|
1334
|
31 |
|
return '$this->escape('.$php.')'; |
1335
|
|
|
} |
1336
|
|
|
} |
1337
|
|
|
|
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.