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authorderchris2019-02-02 15:35:30 +0100
committerderchris2019-02-02 15:35:30 +0100
commit7ad9f272a482802da2d43fe83841adbe9bcd8cb4 (patch)
tree75b43a2a8c3ab3dbdcb0694d135f4729c90b8af7 /lib/less.php/Tree
parenteb6601b2520d48a0be91634fada0389faadde31d (diff)
update less.php to PHP 7.x compatible fork
Diffstat (limited to 'lib/less.php/Tree')
-rw-r--r--lib/less.php/Tree/Alpha.php51
-rw-r--r--lib/less.php/Tree/Anonymous.php58
-rw-r--r--lib/less.php/Tree/Assignment.php39
-rw-r--r--lib/less.php/Tree/Attribute.php54
-rw-r--r--lib/less.php/Tree/Call.php121
-rw-r--r--lib/less.php/Tree/Color.php230
-rw-r--r--lib/less.php/Tree/Comment.php51
-rw-r--r--lib/less.php/Tree/Condition.php72
-rw-r--r--lib/less.php/Tree/DefaultFunc.php34
-rw-r--r--lib/less.php/Tree/DetachedRuleset.php40
-rw-r--r--lib/less.php/Tree/Dimension.php201
-rw-r--r--lib/less.php/Tree/Directive.php100
-rw-r--r--lib/less.php/Tree/Element.php75
-rw-r--r--lib/less.php/Tree/Expression.php97
-rw-r--r--lib/less.php/Tree/Extend.php77
-rw-r--r--lib/less.php/Tree/Import.php304
-rw-r--r--lib/less.php/Tree/Javascript.php30
-rw-r--r--lib/less.php/Tree/Keyword.php44
-rw-r--r--lib/less.php/Tree/Media.php179
-rw-r--r--lib/less.php/Tree/Mixin/Call.php202
-rw-r--r--lib/less.php/Tree/Mixin/Definition.php241
-rw-r--r--lib/less.php/Tree/NameValue.php51
-rw-r--r--lib/less.php/Tree/Negative.php37
-rw-r--r--lib/less.php/Tree/Operation.php70
-rw-r--r--lib/less.php/Tree/Paren.php35
-rw-r--r--lib/less.php/Tree/Quoted.php81
-rw-r--r--lib/less.php/Tree/Rule.php115
-rw-r--r--lib/less.php/Tree/Ruleset.php643
-rw-r--r--lib/less.php/Tree/RulesetCall.php26
-rw-r--r--lib/less.php/Tree/Selector.php168
-rw-r--r--lib/less.php/Tree/UnicodeDescriptor.php29
-rw-r--r--lib/less.php/Tree/Unit.php147
-rw-r--r--lib/less.php/Tree/UnitConversions.php35
-rw-r--r--lib/less.php/Tree/Url.php76
-rw-r--r--lib/less.php/Tree/Value.php48
-rw-r--r--lib/less.php/Tree/Variable.php52
36 files changed, 3913 insertions, 0 deletions
diff --git a/lib/less.php/Tree/Alpha.php b/lib/less.php/Tree/Alpha.php
new file mode 100644
index 0000000..935377d
--- /dev/null
+++ b/lib/less.php/Tree/Alpha.php
@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * Alpha
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Alpha extends Less_Tree{
+ public $value;
+ public $type = 'Alpha';
+
+ public function __construct($val){
+ $this->value = $val;
+ }
+
+ //function accept( $visitor ){
+ // $this->value = $visitor->visit( $this->value );
+ //}
+
+ public function compile($env){
+
+ if( is_object($this->value) ){
+ $this->value = $this->value->compile($env);
+ }
+
+ return $this;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ $output->add( "alpha(opacity=" );
+
+ if( is_string($this->value) ){
+ $output->add( $this->value );
+ }else{
+ $this->value->genCSS( $output);
+ }
+
+ $output->add( ')' );
+ }
+
+ public function toCSS(){
+ return "alpha(opacity=" . (is_string($this->value) ? $this->value : $this->value->toCSS()) . ")";
+ }
+
+
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/Anonymous.php b/lib/less.php/Tree/Anonymous.php
new file mode 100644
index 0000000..8889dc0
--- /dev/null
+++ b/lib/less.php/Tree/Anonymous.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * Anonymous
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Anonymous extends Less_Tree{
+ public $value;
+ public $quote;
+ public $index;
+ public $mapLines;
+ public $currentFileInfo;
+ public $type = 'Anonymous';
+
+ /**
+ * @param integer $index
+ * @param boolean $mapLines
+ */
+ public function __construct($value, $index = null, $currentFileInfo = null, $mapLines = null ){
+ $this->value = $value;
+ $this->index = $index;
+ $this->mapLines = $mapLines;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function compile(){
+ return new Less_Tree_Anonymous($this->value, $this->index, $this->currentFileInfo, $this->mapLines);
+ }
+
+ public function compare($x){
+ if( !is_object($x) ){
+ return -1;
+ }
+
+ $left = $this->toCSS();
+ $right = $x->toCSS();
+
+ if( $left === $right ){
+ return 0;
+ }
+
+ return $left < $right ? -1 : 1;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->value, $this->currentFileInfo, $this->index, $this->mapLines );
+ }
+
+ public function toCSS(){
+ return $this->value;
+ }
+
+}
diff --git a/lib/less.php/Tree/Assignment.php b/lib/less.php/Tree/Assignment.php
new file mode 100644
index 0000000..2380006
--- /dev/null
+++ b/lib/less.php/Tree/Assignment.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Assignment
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Assignment extends Less_Tree{
+
+ public $key;
+ public $value;
+ public $type = 'Assignment';
+
+ public function __construct($key, $val) {
+ $this->key = $key;
+ $this->value = $val;
+ }
+
+ public function accept( $visitor ){
+ $this->value = $visitor->visitObj( $this->value );
+ }
+
+ public function compile($env) {
+ return new Less_Tree_Assignment( $this->key, $this->value->compile($env));
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->key . '=' );
+ $this->value->genCSS( $output );
+ }
+
+ public function toCss(){
+ return $this->key . '=' . $this->value->toCSS();
+ }
+}
diff --git a/lib/less.php/Tree/Attribute.php b/lib/less.php/Tree/Attribute.php
new file mode 100644
index 0000000..32b8900
--- /dev/null
+++ b/lib/less.php/Tree/Attribute.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Attribute
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Attribute extends Less_Tree{
+
+ public $key;
+ public $op;
+ public $value;
+ public $type = 'Attribute';
+
+ public function __construct($key, $op, $value){
+ $this->key = $key;
+ $this->op = $op;
+ $this->value = $value;
+ }
+
+ public function compile($env){
+
+ $key_obj = is_object($this->key);
+ $val_obj = is_object($this->value);
+
+ if( !$key_obj && !$val_obj ){
+ return $this;
+ }
+
+ return new Less_Tree_Attribute(
+ $key_obj ? $this->key->compile($env) : $this->key ,
+ $this->op,
+ $val_obj ? $this->value->compile($env) : $this->value);
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->toCSS() );
+ }
+
+ public function toCSS(){
+ $value = $this->key;
+
+ if( $this->op ){
+ $value .= $this->op;
+ $value .= (is_object($this->value) ? $this->value->toCSS() : $this->value);
+ }
+
+ return '[' . $value . ']';
+ }
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/Call.php b/lib/less.php/Tree/Call.php
new file mode 100644
index 0000000..3c3382d
--- /dev/null
+++ b/lib/less.php/Tree/Call.php
@@ -0,0 +1,121 @@
+<?php
+
+
+/**
+ * Call
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Call extends Less_Tree{
+ public $value;
+
+ public $name;
+ public $args;
+ public $index;
+ public $currentFileInfo;
+ public $type = 'Call';
+
+ public function __construct($name, $args, $index, $currentFileInfo = null ){
+ $this->name = $name;
+ $this->args = $args;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function accept( $visitor ){
+ $this->args = $visitor->visitArray( $this->args );
+ }
+
+ //
+ // When evaluating a function call,
+ // we either find the function in `tree.functions` [1],
+ // in which case we call it, passing the evaluated arguments,
+ // or we simply print it out as it appeared originally [2].
+ //
+ // The *functions.js* file contains the built-in functions.
+ //
+ // The reason why we evaluate the arguments, is in the case where
+ // we try to pass a variable to a function, like: `saturate(@color)`.
+ // The function should receive the value, not the variable.
+ //
+ public function compile($env=null){
+ $args = array();
+ foreach($this->args as $a){
+ $args[] = $a->compile($env);
+ }
+
+ $nameLC = strtolower($this->name);
+ switch($nameLC){
+ case '%':
+ $nameLC = '_percent';
+ break;
+
+ case 'get-unit':
+ $nameLC = 'getunit';
+ break;
+
+ case 'data-uri':
+ $nameLC = 'datauri';
+ break;
+
+ case 'svg-gradient':
+ $nameLC = 'svggradient';
+ break;
+ }
+
+ $result = null;
+ if( $nameLC === 'default' ){
+ $result = Less_Tree_DefaultFunc::compile();
+
+ }else{
+
+ if( method_exists('Less_Functions',$nameLC) ){ // 1.
+ try {
+
+ $func = new Less_Functions($env, $this->currentFileInfo);
+ $result = call_user_func_array( array($func,$nameLC),$args);
+
+ } catch (Exception $e) {
+ throw new Less_Exception_Compiler('error evaluating function `' . $this->name . '` '.$e->getMessage().' index: '. $this->index);
+ }
+ } elseif( isset( $env->functions[$nameLC] ) && is_callable( $env->functions[$nameLC] ) ) {
+ try {
+ $result = call_user_func_array( $env->functions[$nameLC], $args );
+ } catch (Exception $e) {
+ throw new Less_Exception_Compiler('error evaluating function `' . $this->name . '` '.$e->getMessage().' index: '. $this->index);
+ }
+ }
+ }
+
+ if( $result !== null ){
+ return $result;
+ }
+
+
+ return new Less_Tree_Call( $this->name, $args, $this->index, $this->currentFileInfo );
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ $output->add( $this->name . '(', $this->currentFileInfo, $this->index );
+ $args_len = count($this->args);
+ for($i = 0; $i < $args_len; $i++ ){
+ $this->args[$i]->genCSS( $output );
+ if( $i + 1 < $args_len ){
+ $output->add( ', ' );
+ }
+ }
+
+ $output->add( ')' );
+ }
+
+
+ //public function toCSS(){
+ // return $this->compile()->toCSS();
+ //}
+
+}
diff --git a/lib/less.php/Tree/Color.php b/lib/less.php/Tree/Color.php
new file mode 100644
index 0000000..77af07a
--- /dev/null
+++ b/lib/less.php/Tree/Color.php
@@ -0,0 +1,230 @@
+<?php
+
+/**
+ * Color
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Color extends Less_Tree{
+ public $rgb;
+ public $alpha;
+ public $isTransparentKeyword;
+ public $type = 'Color';
+
+ public function __construct($rgb, $a = 1, $isTransparentKeyword = null ){
+
+ if( $isTransparentKeyword ){
+ $this->rgb = $rgb;
+ $this->alpha = $a;
+ $this->isTransparentKeyword = true;
+ return;
+ }
+
+ $this->rgb = array();
+ if( is_array($rgb) ){
+ $this->rgb = $rgb;
+ }else if( strlen($rgb) == 6 ){
+ foreach(str_split($rgb, 2) as $c){
+ $this->rgb[] = hexdec($c);
+ }
+ }else{
+ foreach(str_split($rgb, 1) as $c){
+ $this->rgb[] = hexdec($c.$c);
+ }
+ }
+ $this->alpha = is_numeric($a) ? $a : 1;
+ }
+
+ public function compile(){
+ return $this;
+ }
+
+ public function luma(){
+ $r = $this->rgb[0] / 255;
+ $g = $this->rgb[1] / 255;
+ $b = $this->rgb[2] / 255;
+
+ $r = ($r <= 0.03928) ? $r / 12.92 : pow((($r + 0.055) / 1.055), 2.4);
+ $g = ($g <= 0.03928) ? $g / 12.92 : pow((($g + 0.055) / 1.055), 2.4);
+ $b = ($b <= 0.03928) ? $b / 12.92 : pow((($b + 0.055) / 1.055), 2.4);
+
+ return 0.2126 * $r + 0.7152 * $g + 0.0722 * $b;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->toCSS() );
+ }
+
+ public function toCSS( $doNotCompress = false ){
+ $compress = Less_Parser::$options['compress'] && !$doNotCompress;
+ $alpha = Less_Functions::fround( $this->alpha );
+
+
+ //
+ // If we have some transparency, the only way to represent it
+ // is via `rgba`. Otherwise, we use the hex representation,
+ // which has better compatibility with older browsers.
+ // Values are capped between `0` and `255`, rounded and zero-padded.
+ //
+ if( $alpha < 1 ){
+ if( ( $alpha === 0 || $alpha === 0.0 ) && isset($this->isTransparentKeyword) && $this->isTransparentKeyword ){
+ return 'transparent';
+ }
+
+ $values = array();
+ foreach($this->rgb as $c){
+ $values[] = Less_Functions::clamp( round($c), 255);
+ }
+ $values[] = $alpha;
+
+ $glue = ($compress ? ',' : ', ');
+ return "rgba(" . implode($glue, $values) . ")";
+ }else{
+
+ $color = $this->toRGB();
+
+ if( $compress ){
+
+ // Convert color to short format
+ if( $color[1] === $color[2] && $color[3] === $color[4] && $color[5] === $color[6]) {
+ $color = '#'.$color[1] . $color[3] . $color[5];
+ }
+ }
+
+ return $color;
+ }
+ }
+
+ //
+ // Operations have to be done per-channel, if not,
+ // channels will spill onto each other. Once we have
+ // our result, in the form of an integer triplet,
+ // we create a new Color node to hold the result.
+ //
+
+ /**
+ * @param string $op
+ */
+ public function operate( $op, $other) {
+ $rgb = array();
+ $alpha = $this->alpha * (1 - $other->alpha) + $other->alpha;
+ for ($c = 0; $c < 3; $c++) {
+ $rgb[$c] = Less_Functions::operate( $op, $this->rgb[$c], $other->rgb[$c]);
+ }
+ return new Less_Tree_Color($rgb, $alpha);
+ }
+
+ public function toRGB(){
+ return $this->toHex($this->rgb);
+ }
+
+ public function toHSL(){
+ $r = $this->rgb[0] / 255;
+ $g = $this->rgb[1] / 255;
+ $b = $this->rgb[2] / 255;
+ $a = $this->alpha;
+
+ $max = max($r, $g, $b);
+ $min = min($r, $g, $b);
+ $l = ($max + $min) / 2;
+ $d = $max - $min;
+
+ $h = $s = 0;
+ if( $max !== $min ){
+ $s = $l > 0.5 ? $d / (2 - $max - $min) : $d / ($max + $min);
+
+ switch ($max) {
+ case $r: $h = ($g - $b) / $d + ($g < $b ? 6 : 0); break;
+ case $g: $h = ($b - $r) / $d + 2; break;
+ case $b: $h = ($r - $g) / $d + 4; break;
+ }
+ $h /= 6;
+ }
+ return array('h' => $h * 360, 's' => $s, 'l' => $l, 'a' => $a );
+ }
+
+ //Adapted from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
+ public function toHSV() {
+ $r = $this->rgb[0] / 255;
+ $g = $this->rgb[1] / 255;
+ $b = $this->rgb[2] / 255;
+ $a = $this->alpha;
+
+ $max = max($r, $g, $b);
+ $min = min($r, $g, $b);
+
+ $v = $max;
+
+ $d = $max - $min;
+ if ($max === 0) {
+ $s = 0;
+ } else {
+ $s = $d / $max;
+ }
+
+ $h = 0;
+ if( $max !== $min ){
+ switch($max){
+ case $r: $h = ($g - $b) / $d + ($g < $b ? 6 : 0); break;
+ case $g: $h = ($b - $r) / $d + 2; break;
+ case $b: $h = ($r - $g) / $d + 4; break;
+ }
+ $h /= 6;
+ }
+ return array('h'=> $h * 360, 's'=> $s, 'v'=> $v, 'a' => $a );
+ }
+
+ public function toARGB(){
+ $argb = array_merge( (array) Less_Parser::round($this->alpha * 255), $this->rgb);
+ return $this->toHex( $argb );
+ }
+
+ public function compare($x){
+
+ if( !property_exists( $x, 'rgb' ) ){
+ return -1;
+ }
+
+
+ return ($x->rgb[0] === $this->rgb[0] &&
+ $x->rgb[1] === $this->rgb[1] &&
+ $x->rgb[2] === $this->rgb[2] &&
+ $x->alpha === $this->alpha) ? 0 : -1;
+ }
+
+ public function toHex( $v ){
+
+ $ret = '#';
+ foreach($v as $c){
+ $c = Less_Functions::clamp( Less_Parser::round($c), 255);
+ if( $c < 16 ){
+ $ret .= '0';
+ }
+ $ret .= dechex($c);
+ }
+
+ return $ret;
+ }
+
+
+ /**
+ * @param string $keyword
+ */
+ public static function fromKeyword( $keyword ){
+ $keyword = strtolower($keyword);
+
+ if( Less_Colors::hasOwnProperty($keyword) ){
+ // detect named color
+ return new Less_Tree_Color(substr(Less_Colors::color($keyword), 1));
+ }
+
+ if( $keyword === 'transparent' ){
+ return new Less_Tree_Color( array(0, 0, 0), 0, true);
+ }
+ }
+
+}
diff --git a/lib/less.php/Tree/Comment.php b/lib/less.php/Tree/Comment.php
new file mode 100644
index 0000000..7261284
--- /dev/null
+++ b/lib/less.php/Tree/Comment.php
@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * Comment
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Comment extends Less_Tree{
+
+ public $value;
+ public $silent;
+ public $isReferenced;
+ public $currentFileInfo;
+ public $type = 'Comment';
+
+ public function __construct($value, $silent, $index = null, $currentFileInfo = null ){
+ $this->value = $value;
+ $this->silent = !! $silent;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ //if( $this->debugInfo ){
+ //$output->add( tree.debugInfo($env, $this), $this->currentFileInfo, $this->index);
+ //}
+ $output->add( trim($this->value) );//TODO shouldn't need to trim, we shouldn't grab the \n
+ }
+
+ public function toCSS(){
+ return Less_Parser::$options['compress'] ? '' : $this->value;
+ }
+
+ public function isSilent(){
+ $isReference = ($this->currentFileInfo && isset($this->currentFileInfo['reference']) && (!isset($this->isReferenced) || !$this->isReferenced) );
+ $isCompressed = Less_Parser::$options['compress'] && !preg_match('/^\/\*!/', $this->value);
+ return $this->silent || $isReference || $isCompressed;
+ }
+
+ public function compile(){
+ return $this;
+ }
+
+ public function markReferenced(){
+ $this->isReferenced = true;
+ }
+
+}
diff --git a/lib/less.php/Tree/Condition.php b/lib/less.php/Tree/Condition.php
new file mode 100644
index 0000000..929d33b
--- /dev/null
+++ b/lib/less.php/Tree/Condition.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * Condition
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Condition extends Less_Tree{
+
+ public $op;
+ public $lvalue;
+ public $rvalue;
+ public $index;
+ public $negate;
+ public $type = 'Condition';
+
+ public function __construct($op, $l, $r, $i = 0, $negate = false) {
+ $this->op = trim($op);
+ $this->lvalue = $l;
+ $this->rvalue = $r;
+ $this->index = $i;
+ $this->negate = $negate;
+ }
+
+ public function accept($visitor){
+ $this->lvalue = $visitor->visitObj( $this->lvalue );
+ $this->rvalue = $visitor->visitObj( $this->rvalue );
+ }
+
+ public function compile($env) {
+ $a = $this->lvalue->compile($env);
+ $b = $this->rvalue->compile($env);
+
+ switch( $this->op ){
+ case 'and':
+ $result = $a && $b;
+ break;
+
+ case 'or':
+ $result = $a || $b;
+ break;
+
+ default:
+ if( Less_Parser::is_method($a, 'compare') ){
+ $result = $a->compare($b);
+ }elseif( Less_Parser::is_method($b, 'compare') ){
+ $result = $b->compare($a);
+ }else{
+ throw new Less_Exception_Compiler('Unable to perform comparison', null, $this->index);
+ }
+
+ switch ($result) {
+ case -1:
+ $result = $this->op === '<' || $this->op === '=<' || $this->op === '<=';
+ break;
+
+ case 0:
+ $result = $this->op === '=' || $this->op === '>=' || $this->op === '=<' || $this->op === '<=';
+ break;
+
+ case 1:
+ $result = $this->op === '>' || $this->op === '>=';
+ break;
+ }
+ break;
+ }
+
+ return $this->negate ? !$result : $result;
+ }
+
+}
diff --git a/lib/less.php/Tree/DefaultFunc.php b/lib/less.php/Tree/DefaultFunc.php
new file mode 100644
index 0000000..c2dbf74
--- /dev/null
+++ b/lib/less.php/Tree/DefaultFunc.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * DefaultFunc
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_DefaultFunc{
+
+ static $error_;
+ static $value_;
+
+ public static function compile(){
+ if( self::$error_ ){
+ throw new Exception(self::$error_);
+ }
+ if( self::$value_ !== null ){
+ return self::$value_ ? new Less_Tree_Keyword('true') : new Less_Tree_Keyword('false');
+ }
+ }
+
+ public static function value( $v ){
+ self::$value_ = $v;
+ }
+
+ public static function error( $e ){
+ self::$error_ = $e;
+ }
+
+ public static function reset(){
+ self::$value_ = self::$error_ = null;
+ }
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/DetachedRuleset.php b/lib/less.php/Tree/DetachedRuleset.php
new file mode 100644
index 0000000..c887e40
--- /dev/null
+++ b/lib/less.php/Tree/DetachedRuleset.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * DetachedRuleset
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_DetachedRuleset extends Less_Tree{
+
+ public $ruleset;
+ public $frames;
+ public $type = 'DetachedRuleset';
+
+ public function __construct( $ruleset, $frames = null ){
+ $this->ruleset = $ruleset;
+ $this->frames = $frames;
+ }
+
+ public function accept($visitor) {
+ $this->ruleset = $visitor->visitObj($this->ruleset);
+ }
+
+ public function compile($env){
+ if( $this->frames ){
+ $frames = $this->frames;
+ }else{
+ $frames = $env->frames;
+ }
+ return new Less_Tree_DetachedRuleset($this->ruleset, $frames);
+ }
+
+ public function callEval($env) {
+ if( $this->frames ){
+ return $this->ruleset->compile( $env->copyEvalEnv( array_merge($this->frames,$env->frames) ) );
+ }
+ return $this->ruleset->compile( $env );
+ }
+}
+
diff --git a/lib/less.php/Tree/Dimension.php b/lib/less.php/Tree/Dimension.php
new file mode 100644
index 0000000..2bfb9d5
--- /dev/null
+++ b/lib/less.php/Tree/Dimension.php
@@ -0,0 +1,201 @@
+<?php
+
+/**
+ * Dimension
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Dimension extends Less_Tree{
+
+ public $value;
+ public $unit;
+ public $type = 'Dimension';
+
+ public function __construct($value, $unit = null){
+ $this->value = floatval($value);
+
+ if( $unit && ($unit instanceof Less_Tree_Unit) ){
+ $this->unit = $unit;
+ }elseif( $unit ){
+ $this->unit = new Less_Tree_Unit( array($unit) );
+ }else{
+ $this->unit = new Less_Tree_Unit( );
+ }
+ }
+
+ public function accept( $visitor ){
+ $this->unit = $visitor->visitObj( $this->unit );
+ }
+
+ public function compile(){
+ return $this;
+ }
+
+ public function toColor() {
+ return new Less_Tree_Color(array($this->value, $this->value, $this->value));
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ if( Less_Parser::$options['strictUnits'] && !$this->unit->isSingular() ){
+ throw new Less_Exception_Compiler("Multiple units in dimension. Correct the units or use the unit function. Bad unit: ".$this->unit->toString());
+ }
+
+ $value = Less_Functions::fround( $this->value );
+ $strValue = (string)$value;
+
+ if( $value !== 0 && $value < 0.000001 && $value > -0.000001 ){
+ // would be output 1e-6 etc.
+ $strValue = number_format($strValue,10);
+ $strValue = preg_replace('/\.?0+$/','', $strValue);
+ }
+
+ if( Less_Parser::$options['compress'] ){
+ // Zero values doesn't need a unit
+ if( $value === 0 && $this->unit->isLength() ){
+ $output->add( $strValue );
+ return $strValue;
+ }
+
+ // Float values doesn't need a leading zero
+ if( $value > 0 && $value < 1 && $strValue[0] === '0' ){
+ $strValue = substr($strValue,1);
+ }
+ }
+
+ $output->add( $strValue );
+ $this->unit->genCSS( $output );
+ }
+
+ public function __toString(){
+ return $this->toCSS();
+ }
+
+ // In an operation between two Dimensions,
+ // we default to the first Dimension's unit,
+ // so `1px + 2em` will yield `3px`.
+
+ /**
+ * @param string $op
+ */
+ public function operate( $op, $other){
+
+ $value = Less_Functions::operate( $op, $this->value, $other->value);
+ $unit = clone $this->unit;
+
+ if( $op === '+' || $op === '-' ){
+
+ if( !$unit->numerator && !$unit->denominator ){
+ $unit->numerator = $other->unit->numerator;
+ $unit->denominator = $other->unit->denominator;
+ }elseif( !$other->unit->numerator && !$other->unit->denominator ){
+ // do nothing
+ }else{
+ $other = $other->convertTo( $this->unit->usedUnits());
+
+ if( Less_Parser::$options['strictUnits'] && $other->unit->toString() !== $unit->toCSS() ){
+ throw new Less_Exception_Compiler("Incompatible units. Change the units or use the unit function. Bad units: '" . $unit->toString() . "' and " . $other->unit->toString() . "'.");
+ }
+
+ $value = Less_Functions::operate( $op, $this->value, $other->value);
+ }
+ }elseif( $op === '*' ){
+ $unit->numerator = array_merge($unit->numerator, $other->unit->numerator);
+ $unit->denominator = array_merge($unit->denominator, $other->unit->denominator);
+ sort($unit->numerator);
+ sort($unit->denominator);
+ $unit->cancel();
+ }elseif( $op === '/' ){
+ $unit->numerator = array_merge($unit->numerator, $other->unit->denominator);
+ $unit->denominator = array_merge($unit->denominator, $other->unit->numerator);
+ sort($unit->numerator);
+ sort($unit->denominator);
+ $unit->cancel();
+ }
+ return new Less_Tree_Dimension( $value, $unit);
+ }
+
+ public function compare($other) {
+ if ($other instanceof Less_Tree_Dimension) {
+
+ if( $this->unit->isEmpty() || $other->unit->isEmpty() ){
+ $a = $this;
+ $b = $other;
+ } else {
+ $a = $this->unify();
+ $b = $other->unify();
+ if( $a->unit->compare($b->unit) !== 0 ){
+ return -1;
+ }
+ }
+ $aValue = $a->value;
+ $bValue = $b->value;
+
+ if ($bValue > $aValue) {
+ return -1;
+ } elseif ($bValue < $aValue) {
+ return 1;
+ } else {
+ return 0;
+ }
+ } else {
+ return -1;
+ }
+ }
+
+ public function unify() {
+ return $this->convertTo(array('length'=> 'px', 'duration'=> 's', 'angle' => 'rad' ));
+ }
+
+ public function convertTo($conversions) {
+ $value = $this->value;
+ $unit = clone $this->unit;
+
+ if( is_string($conversions) ){
+ $derivedConversions = array();
+ foreach( Less_Tree_UnitConversions::$groups as $i ){
+ if( isset(Less_Tree_UnitConversions::${$i}[$conversions]) ){
+ $derivedConversions = array( $i => $conversions);
+ }
+ }
+ $conversions = $derivedConversions;
+ }
+
+
+ foreach($conversions as $groupName => $targetUnit){
+ $group = Less_Tree_UnitConversions::${$groupName};
+
+ //numerator
+ foreach($unit->numerator as $i => $atomicUnit){
+ $atomicUnit = $unit->numerator[$i];
+ if( !isset($group[$atomicUnit]) ){
+ continue;
+ }
+
+ $value = $value * ($group[$atomicUnit] / $group[$targetUnit]);
+
+ $unit->numerator[$i] = $targetUnit;
+ }
+
+ //denominator
+ foreach($unit->denominator as $i => $atomicUnit){
+ $atomicUnit = $unit->denominator[$i];
+ if( !isset($group[$atomicUnit]) ){
+ continue;
+ }
+
+ $value = $value / ($group[$atomicUnit] / $group[$targetUnit]);
+
+ $unit->denominator[$i] = $targetUnit;
+ }
+ }
+
+ $unit->cancel();
+
+ return new Less_Tree_Dimension( $value, $unit);
+ }
+}
diff --git a/lib/less.php/Tree/Directive.php b/lib/less.php/Tree/Directive.php
new file mode 100644
index 0000000..04a1e46
--- /dev/null
+++ b/lib/less.php/Tree/Directive.php
@@ -0,0 +1,100 @@
+<?php
+
+/**
+ * Directive
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Directive extends Less_Tree{
+
+ public $name;
+ public $value;
+ public $rules;
+ public $index;
+ public $isReferenced;
+ public $currentFileInfo;
+ public $debugInfo;
+ public $type = 'Directive';
+
+ public function __construct($name, $value = null, $rules, $index = null, $currentFileInfo = null, $debugInfo = null ){
+ $this->name = $name;
+ $this->value = $value;
+ if( $rules ){
+ $this->rules = $rules;
+ $this->rules->allowImports = true;
+ }
+
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ $this->debugInfo = $debugInfo;
+ }
+
+
+ public function accept( $visitor ){
+ if( $this->rules ){
+ $this->rules = $visitor->visitObj( $this->rules );
+ }
+ if( $this->value ){
+ $this->value = $visitor->visitObj( $this->value );
+ }
+ }
+
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $value = $this->value;
+ $rules = $this->rules;
+ $output->add( $this->name, $this->currentFileInfo, $this->index );
+ if( $this->value ){
+ $output->add(' ');
+ $this->value->genCSS($output);
+ }
+ if( $this->rules ){
+ Less_Tree::outputRuleset( $output, array($this->rules));
+ } else {
+ $output->add(';');
+ }
+ }
+
+ public function compile($env){
+
+ $value = $this->value;
+ $rules = $this->rules;
+ if( $value ){
+ $value = $value->compile($env);
+ }
+
+ if( $rules ){
+ $rules = $rules->compile($env);
+ $rules->root = true;
+ }
+
+ return new Less_Tree_Directive( $this->name, $value, $rules, $this->index, $this->currentFileInfo, $this->debugInfo );
+ }
+
+
+ public function variable($name){
+ if( $this->rules ){
+ return $this->rules->variable($name);
+ }
+ }
+
+ public function find($selector){
+ if( $this->rules ){
+ return $this->rules->find($selector, $this);
+ }
+ }
+
+ //rulesets: function () { if (this.rules) return tree.Ruleset.prototype.rulesets.apply(this.rules); },
+
+ public function markReferenced(){
+ $this->isReferenced = true;
+ if( $this->rules ){
+ Less_Tree::ReferencedArray($this->rules->rules);
+ }
+ }
+
+}
diff --git a/lib/less.php/Tree/Element.php b/lib/less.php/Tree/Element.php
new file mode 100644
index 0000000..9cea5e4
--- /dev/null
+++ b/lib/less.php/Tree/Element.php
@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * Element
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Element extends Less_Tree{
+
+ public $combinator = '';
+ public $value = '';
+ public $index;
+ public $currentFileInfo;
+ public $type = 'Element';
+
+ public $value_is_object = false;
+
+ public function __construct($combinator, $value, $index = null, $currentFileInfo = null ){
+
+ $this->value = $value;
+ $this->value_is_object = is_object($value);
+
+ if( $combinator ){
+ $this->combinator = $combinator;
+ }
+
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function accept( $visitor ){
+ if( $this->value_is_object ){ //object or string
+ $this->value = $visitor->visitObj( $this->value );
+ }
+ }
+
+ public function compile($env){
+
+ if( Less_Environment::$mixin_stack ){
+ return new Less_Tree_Element($this->combinator, ($this->value_is_object ? $this->value->compile($env) : $this->value), $this->index, $this->currentFileInfo );
+ }
+
+ if( $this->value_is_object ){
+ $this->value = $this->value->compile($env);
+ }
+
+ return $this;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->toCSS(), $this->currentFileInfo, $this->index );
+ }
+
+ public function toCSS(){
+
+ if( $this->value_is_object ){
+ $value = $this->value->toCSS();
+ }else{
+ $value = $this->value;
+ }
+
+
+ if( $value === '' && $this->combinator && $this->combinator === '&' ){
+ return '';
+ }
+
+
+ return Less_Environment::$_outputMap[$this->combinator] . $value;
+ }
+
+}
diff --git a/lib/less.php/Tree/Expression.php b/lib/less.php/Tree/Expression.php
new file mode 100644
index 0000000..d834354
--- /dev/null
+++ b/lib/less.php/Tree/Expression.php
@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * Expression
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Expression extends Less_Tree{
+
+ public $value = array();
+ public $parens = false;
+ public $parensInOp = false;
+ public $type = 'Expression';
+
+ public function __construct( $value, $parens = null ){
+ $this->value = $value;
+ $this->parens = $parens;
+ }
+
+ public function accept( $visitor ){
+ $this->value = $visitor->visitArray( $this->value );
+ }
+
+ public function compile($env) {
+
+ $doubleParen = false;
+
+ if( $this->parens && !$this->parensInOp ){
+ Less_Environment::$parensStack++;
+ }
+
+ $returnValue = null;
+ if( $this->value ){
+
+ $count = count($this->value);
+
+ if( $count > 1 ){
+
+ $ret = array();
+ foreach($this->value as $e){
+ $ret[] = $e->compile($env);
+ }
+ $returnValue = new Less_Tree_Expression($ret);
+
+ }else{
+
+ if( ($this->value[0] instanceof Less_Tree_Expression) && $this->value[0]->parens && !$this->value[0]->parensInOp ){
+ $doubleParen = true;
+ }
+
+ $returnValue = $this->value[0]->compile($env);
+ }
+
+ } else {
+ $returnValue = $this;
+ }
+
+ if( $this->parens ){
+ if( !$this->parensInOp ){
+ Less_Environment::$parensStack--;
+
+ }elseif( !Less_Environment::isMathOn() && !$doubleParen ){
+ $returnValue = new Less_Tree_Paren($returnValue);
+
+ }
+ }
+ return $returnValue;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $val_len = count($this->value);
+ for( $i = 0; $i < $val_len; $i++ ){
+ $this->value[$i]->genCSS( $output );
+ if( $i + 1 < $val_len ){
+ $output->add( ' ' );
+ }
+ }
+ }
+
+ public function throwAwayComments() {
+
+ if( is_array($this->value) ){
+ $new_value = array();
+ foreach($this->value as $v){
+ if( $v instanceof Less_Tree_Comment ){
+ continue;
+ }
+ $new_value[] = $v;
+ }
+ $this->value = $new_value;
+ }
+ }
+}
diff --git a/lib/less.php/Tree/Extend.php b/lib/less.php/Tree/Extend.php
new file mode 100644
index 0000000..8f21e93
--- /dev/null
+++ b/lib/less.php/Tree/Extend.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Extend
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Extend extends Less_Tree{
+
+ public $selector;
+ public $option;
+ public $index;
+ public $selfSelectors = array();
+ public $allowBefore;
+ public $allowAfter;
+ public $firstExtendOnThisSelectorPath;
+ public $type = 'Extend';
+ public $ruleset;
+
+
+ public $object_id;
+ public $parent_ids = array();
+
+ /**
+ * @param integer $index
+ */
+ public function __construct($selector, $option, $index){
+ static $i = 0;
+ $this->selector = $selector;
+ $this->option = $option;
+ $this->index = $index;
+
+ switch($option){
+ case "all":
+ $this->allowBefore = true;
+ $this->allowAfter = true;
+ break;
+ default:
+ $this->allowBefore = false;
+ $this->allowAfter = false;
+ break;
+ }
+
+ $this->object_id = $i++;
+ $this->parent_ids = array($this->object_id);
+ }
+
+ public function accept( $visitor ){
+ $this->selector = $visitor->visitObj( $this->selector );
+ }
+
+ public function compile( $env ){
+ Less_Parser::$has_extends = true;
+ $this->selector = $this->selector->compile($env);
+ return $this;
+ //return new Less_Tree_Extend( $this->selector->compile($env), $this->option, $this->index);
+ }
+
+ public function findSelfSelectors( $selectors ){
+ $selfElements = array();
+
+
+ for( $i = 0, $selectors_len = count($selectors); $i < $selectors_len; $i++ ){
+ $selectorElements = $selectors[$i]->elements;
+ // duplicate the logic in genCSS function inside the selector node.
+ // future TODO - move both logics into the selector joiner visitor
+ if( $i && $selectorElements && $selectorElements[0]->combinator === "") {
+ $selectorElements[0]->combinator = ' ';
+ }
+ $selfElements = array_merge( $selfElements, $selectors[$i]->elements );
+ }
+
+ $this->selfSelectors = array(new Less_Tree_Selector($selfElements));
+ }
+
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/Import.php b/lib/less.php/Tree/Import.php
new file mode 100644
index 0000000..4e14afe
--- /dev/null
+++ b/lib/less.php/Tree/Import.php
@@ -0,0 +1,304 @@
+<?php
+
+/**
+ * CSS @import node
+ *
+ * The general strategy here is that we don't want to wait
+ * for the parsing to be completed, before we start importing
+ * the file. That's because in the context of a browser,
+ * most of the time will be spent waiting for the server to respond.
+ *
+ * On creation, we push the import path to our import queue, though
+ * `import,push`, we also pass it a callback, which it'll call once
+ * the file has been fetched, and parsed.
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Import extends Less_Tree{
+
+ public $options;
+ public $index;
+ public $path;
+ public $features;
+ public $currentFileInfo;
+ public $css;
+ public $skip;
+ public $root;
+ public $type = 'Import';
+
+ public function __construct($path, $features, $options, $index, $currentFileInfo = null ){
+ $this->options = $options;
+ $this->index = $index;
+ $this->path = $path;
+ $this->features = $features;
+ $this->currentFileInfo = $currentFileInfo;
+
+ if( is_array($options) ){
+ $this->options += array('inline'=>false);
+
+ if( isset($this->options['less']) || $this->options['inline'] ){
+ $this->css = !isset($this->options['less']) || !$this->options['less'] || $this->options['inline'];
+ } else {
+ $pathValue = $this->getPath();
+ if( $pathValue && preg_match('/css([\?;].*)?$/',$pathValue) ){
+ $this->css = true;
+ }
+ }
+ }
+ }
+
+//
+// The actual import node doesn't return anything, when converted to CSS.
+// The reason is that it's used at the evaluation stage, so that the rules
+// it imports can be treated like any other rules.
+//
+// In `eval`, we make sure all Import nodes get evaluated, recursively, so
+// we end up with a flat structure, which can easily be imported in the parent
+// ruleset.
+//
+
+ public function accept($visitor){
+
+ if( $this->features ){
+ $this->features = $visitor->visitObj($this->features);
+ }
+ $this->path = $visitor->visitObj($this->path);
+
+ if( !$this->options['inline'] && $this->root ){
+ $this->root = $visitor->visit($this->root);
+ }
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ if( $this->css ){
+
+ $output->add( '@import ', $this->currentFileInfo, $this->index );
+
+ $this->path->genCSS( $output );
+ if( $this->features ){
+ $output->add( ' ' );
+ $this->features->genCSS( $output );
+ }
+ $output->add( ';' );
+ }
+ }
+
+ public function toCSS(){
+ $features = $this->features ? ' ' . $this->features->toCSS() : '';
+
+ if ($this->css) {
+ return "@import " . $this->path->toCSS() . $features . ";\n";
+ } else {
+ return "";
+ }
+ }
+
+ /**
+ * @return string
+ */
+ public function getPath(){
+ if ($this->path instanceof Less_Tree_Quoted) {
+ $path = $this->path->value;
+ $path = ( isset($this->css) || preg_match('/(\.[a-z]*$)|([\?;].*)$/',$path)) ? $path : $path . '.less';
+ } else if ($this->path instanceof Less_Tree_URL) {
+ $path = $this->path->value->value;
+ }else{
+ return null;
+ }
+
+ //remove query string and fragment
+ return preg_replace('/[\?#][^\?]*$/','',$path);
+ }
+
+ public function compileForImport( $env ){
+ return new Less_Tree_Import( $this->path->compile($env), $this->features, $this->options, $this->index, $this->currentFileInfo);
+ }
+
+ public function compilePath($env) {
+ $path = $this->path->compile($env);
+ $rootpath = '';
+ if( $this->currentFileInfo && $this->currentFileInfo['rootpath'] ){
+ $rootpath = $this->currentFileInfo['rootpath'];
+ }
+
+
+ if( !($path instanceof Less_Tree_URL) ){
+ if( $rootpath ){
+ $pathValue = $path->value;
+ // Add the base path if the import is relative
+ if( $pathValue && Less_Environment::isPathRelative($pathValue) ){
+ $path->value = $this->currentFileInfo['uri_root'].$pathValue;
+ }
+ }
+ $path->value = Less_Environment::normalizePath($path->value);
+ }
+
+
+
+ return $path;
+ }
+
+ public function compile( $env ){
+
+ $evald = $this->compileForImport($env);
+
+ //get path & uri
+ $path_and_uri = null;
+ if( is_callable(Less_Parser::$options['import_callback']) ){
+ $path_and_uri = call_user_func(Less_Parser::$options['import_callback'],$evald);
+ }
+
+ if( !$path_and_uri ){
+ $path_and_uri = $evald->PathAndUri();
+ }
+
+ if( $path_and_uri ){
+ list($full_path, $uri) = $path_and_uri;
+ }else{
+ $full_path = $uri = $evald->getPath();
+ }
+
+
+ //import once
+ if( $evald->skip( $full_path, $env) ){
+ return array();
+ }
+
+ if( $this->options['inline'] ){
+ //todo needs to reference css file not import
+ //$contents = new Less_Tree_Anonymous($this->root, 0, array('filename'=>$this->importedFilename), true );
+
+ Less_Parser::AddParsedFile($full_path);
+ $contents = new Less_Tree_Anonymous( file_get_contents($full_path), 0, array(), true );
+
+ if( $this->features ){
+ return new Less_Tree_Media( array($contents), $this->features->value );
+ }
+
+ return array( $contents );
+ }
+
+ // optional (need to be before "CSS" to support optional CSS imports. CSS should be checked only if empty($this->currentFileInfo))
+ if( isset($this->options['optional']) && $this->options['optional'] && !file_exists($full_path) && (!$evald->css || !empty($this->currentFileInfo))) {
+ return array();
+ }
+
+
+ // css ?
+ if( $evald->css ){
+ $features = ( $evald->features ? $evald->features->compile($env) : null );
+ return new Less_Tree_Import( $this->compilePath( $env), $features, $this->options, $this->index);
+ }
+
+
+ return $this->ParseImport( $full_path, $uri, $env );
+ }
+
+
+ /**
+ * Using the import directories, get the full absolute path and uri of the import
+ *
+ * @param Less_Tree_Import $evald
+ */
+ public function PathAndUri(){
+
+ $evald_path = $this->getPath();
+
+ if( $evald_path ){
+
+ $import_dirs = array();
+
+ if( Less_Environment::isPathRelative($evald_path) ){
+ //if the path is relative, the file should be in the current directory
+ $import_dirs[ $this->currentFileInfo['currentDirectory'] ] = $this->currentFileInfo['uri_root'];
+
+ }else{
+ //otherwise, the file should be relative to the server root
+ $import_dirs[ $this->currentFileInfo['entryPath'] ] = $this->currentFileInfo['entryUri'];
+
+ //if the user supplied entryPath isn't the actual root
+ $import_dirs[ $_SERVER['DOCUMENT_ROOT'] ] = '';
+
+ }
+
+ // always look in user supplied import directories
+ $import_dirs = array_merge( $import_dirs, Less_Parser::$options['import_dirs'] );
+
+
+ foreach( $import_dirs as $rootpath => $rooturi){
+ if( is_callable($rooturi) ){
+ list($path, $uri) = call_user_func($rooturi, $evald_path);
+ if( is_string($path) ){
+ $full_path = $path;
+ return array( $full_path, $uri );
+ }
+ }elseif( !empty($rootpath) ){
+
+ $path = rtrim($rootpath,'/\\').'/'.ltrim($evald_path,'/\\');
+
+ if( file_exists($path) ){
+ $full_path = Less_Environment::normalizePath($path);
+ $uri = Less_Environment::normalizePath(dirname($rooturi.$evald_path));
+ return array( $full_path, $uri );
+ } elseif( file_exists($path.'.less') ){
+ $full_path = Less_Environment::normalizePath($path.'.less');
+ $uri = Less_Environment::normalizePath(dirname($rooturi.$evald_path.'.less'));
+ return array( $full_path, $uri );
+ }
+ }
+ }
+ }
+ }
+
+
+ /**
+ * Parse the import url and return the rules
+ *
+ * @return Less_Tree_Media|array
+ */
+ public function ParseImport( $full_path, $uri, $env ){
+
+ $import_env = clone $env;
+ if( (isset($this->options['reference']) && $this->options['reference']) || isset($this->currentFileInfo['reference']) ){
+ $import_env->currentFileInfo['reference'] = true;
+ }
+
+ if( (isset($this->options['multiple']) && $this->options['multiple']) ){
+ $import_env->importMultiple = true;
+ }
+
+ $parser = new Less_Parser($import_env);
+ $root = $parser->parseFile($full_path, $uri, true);
+
+
+ $ruleset = new Less_Tree_Ruleset(array(), $root->rules );
+ $ruleset->evalImports($import_env);
+
+ return $this->features ? new Less_Tree_Media($ruleset->rules, $this->features->value) : $ruleset->rules;
+ }
+
+
+ /**
+ * Should the import be skipped?
+ *
+ * @return boolean|null
+ */
+ private function Skip($path, $env){
+
+ $path = Less_Parser::AbsPath($path, true);
+
+ if( $path && Less_Parser::FileParsed($path) ){
+
+ if( isset($this->currentFileInfo['reference']) ){
+ return true;
+ }
+
+ return !isset($this->options['multiple']) && !$env->importMultiple;
+ }
+
+ }
+}
diff --git a/lib/less.php/Tree/Javascript.php b/lib/less.php/Tree/Javascript.php
new file mode 100644
index 0000000..1b03183
--- /dev/null
+++ b/lib/less.php/Tree/Javascript.php
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Javascript
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Javascript extends Less_Tree{
+
+ public $type = 'Javascript';
+ public $escaped;
+ public $expression;
+ public $index;
+
+ /**
+ * @param boolean $index
+ * @param boolean $escaped
+ */
+ public function __construct($string, $index, $escaped){
+ $this->escaped = $escaped;
+ $this->expression = $string;
+ $this->index = $index;
+ }
+
+ public function compile(){
+ return new Less_Tree_Anonymous('/* Sorry, can not do JavaScript evaluation in PHP... :( */');
+ }
+
+}
diff --git a/lib/less.php/Tree/Keyword.php b/lib/less.php/Tree/Keyword.php
new file mode 100644
index 0000000..e1d98c4
--- /dev/null
+++ b/lib/less.php/Tree/Keyword.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Keyword
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Keyword extends Less_Tree{
+
+ public $value;
+ public $type = 'Keyword';
+
+ /**
+ * @param string $value
+ */
+ public function __construct($value){
+ $this->value = $value;
+ }
+
+ public function compile(){
+ return $this;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ if( $this->value === '%') {
+ throw new Less_Exception_Compiler("Invalid % without number");
+ }
+
+ $output->add( $this->value );
+ }
+
+ public function compare($other) {
+ if ($other instanceof Less_Tree_Keyword) {
+ return $other->value === $this->value ? 0 : 1;
+ } else {
+ return -1;
+ }
+ }
+}
diff --git a/lib/less.php/Tree/Media.php b/lib/less.php/Tree/Media.php
new file mode 100644
index 0000000..f9ee9d4
--- /dev/null
+++ b/lib/less.php/Tree/Media.php
@@ -0,0 +1,179 @@
+<?php
+
+/**
+ * Media
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Media extends Less_Tree{
+
+ public $features;
+ public $rules;
+ public $index;
+ public $currentFileInfo;
+ public $isReferenced;
+ public $type = 'Media';
+
+ public function __construct($value = array(), $features = array(), $index = null, $currentFileInfo = null ){
+
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+
+ $selectors = $this->emptySelectors();
+
+ $this->features = new Less_Tree_Value($features);
+
+ $this->rules = array(new Less_Tree_Ruleset($selectors, $value));
+ $this->rules[0]->allowImports = true;
+ }
+
+ public function accept( $visitor ){
+ $this->features = $visitor->visitObj($this->features);
+ $this->rules = $visitor->visitArray($this->rules);
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ $output->add( '@media ', $this->currentFileInfo, $this->index );
+ $this->features->genCSS( $output );
+ Less_Tree::outputRuleset( $output, $this->rules);
+
+ }
+
+ public function compile($env) {
+
+ $media = new Less_Tree_Media(array(), array(), $this->index, $this->currentFileInfo );
+
+ $strictMathBypass = false;
+ if( Less_Parser::$options['strictMath'] === false) {
+ $strictMathBypass = true;
+ Less_Parser::$options['strictMath'] = true;
+ }
+
+ $media->features = $this->features->compile($env);
+
+ if( $strictMathBypass ){
+ Less_Parser::$options['strictMath'] = false;
+ }
+
+ $env->mediaPath[] = $media;
+ $env->mediaBlocks[] = $media;
+
+ array_unshift($env->frames, $this->rules[0]);
+ $media->rules = array($this->rules[0]->compile($env));
+ array_shift($env->frames);
+
+ array_pop($env->mediaPath);
+
+ return !$env->mediaPath ? $media->compileTop($env) : $media->compileNested($env);
+ }
+
+ public function variable($name) {
+ return $this->rules[0]->variable($name);
+ }
+
+ public function find($selector) {
+ return $this->rules[0]->find($selector, $this);
+ }
+
+ public function emptySelectors(){
+ $el = new Less_Tree_Element('','&', $this->index, $this->currentFileInfo );
+ $sels = array( new Less_Tree_Selector(array($el), array(), null, $this->index, $this->currentFileInfo) );
+ $sels[0]->mediaEmpty = true;
+ return $sels;
+ }
+
+ public function markReferenced(){
+ $this->rules[0]->markReferenced();
+ $this->isReferenced = true;
+ Less_Tree::ReferencedArray($this->rules[0]->rules);
+ }
+
+ // evaltop
+ public function compileTop($env) {
+ $result = $this;
+
+ if (count($env->mediaBlocks) > 1) {
+ $selectors = $this->emptySelectors();
+ $result = new Less_Tree_Ruleset($selectors, $env->mediaBlocks);
+ $result->multiMedia = true;
+ }
+
+ $env->mediaBlocks = array();
+ $env->mediaPath = array();
+
+ return $result;
+ }
+
+ public function compileNested($env) {
+ $path = array_merge($env->mediaPath, array($this));
+
+ // Extract the media-query conditions separated with `,` (OR).
+ foreach ($path as $key => $p) {
+ $value = $p->features instanceof Less_Tree_Value ? $p->features->value : $p->features;
+ $path[$key] = is_array($value) ? $value : array($value);
+ }
+
+ // Trace all permutations to generate the resulting media-query.
+ //
+ // (a, b and c) with nested (d, e) ->
+ // a and d
+ // a and e
+ // b and c and d
+ // b and c and e
+
+ $permuted = $this->permute($path);
+ $expressions = array();
+ foreach($permuted as $path){
+
+ for( $i=0, $len=count($path); $i < $len; $i++){
+ $path[$i] = Less_Parser::is_method($path[$i], 'toCSS') ? $path[$i] : new Less_Tree_Anonymous($path[$i]);
+ }
+
+ for( $i = count($path) - 1; $i > 0; $i-- ){
+ array_splice($path, $i, 0, array(new Less_Tree_Anonymous('and')));
+ }
+
+ $expressions[] = new Less_Tree_Expression($path);
+ }
+ $this->features = new Less_Tree_Value($expressions);
+
+
+
+ // Fake a tree-node that doesn't output anything.
+ return new Less_Tree_Ruleset(array(), array());
+ }
+
+ public function permute($arr) {
+ if (!$arr)
+ return array();
+
+ if (count($arr) == 1)
+ return $arr[0];
+
+ $result = array();
+ $rest = $this->permute(array_slice($arr, 1));
+ foreach ($rest as $r) {
+ foreach ($arr[0] as $a) {
+ $result[] = array_merge(
+ is_array($a) ? $a : array($a),
+ is_array($r) ? $r : array($r)
+ );
+ }
+ }
+
+ return $result;
+ }
+
+ public function bubbleSelectors($selectors) {
+
+ if( !$selectors) return;
+
+ $this->rules = array(new Less_Tree_Ruleset( $selectors, array($this->rules[0])));
+ }
+
+}
diff --git a/lib/less.php/Tree/Mixin/Call.php b/lib/less.php/Tree/Mixin/Call.php
new file mode 100644
index 0000000..04eb426
--- /dev/null
+++ b/lib/less.php/Tree/Mixin/Call.php
@@ -0,0 +1,202 @@
+<?php
+
+
+class Less_Tree_Mixin_Call extends Less_Tree{
+
+ public $selector;
+ public $arguments;
+ public $index;
+ public $currentFileInfo;
+
+ public $important;
+ public $type = 'MixinCall';
+
+ /**
+ * less.js: tree.mixin.Call
+ *
+ */
+ public function __construct($elements, $args, $index, $currentFileInfo, $important = false){
+ $this->selector = new Less_Tree_Selector($elements);
+ $this->arguments = $args;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ $this->important = $important;
+ }
+
+ //function accept($visitor){
+ // $this->selector = $visitor->visit($this->selector);
+ // $this->arguments = $visitor->visit($this->arguments);
+ //}
+
+
+ public function compile($env){
+
+ $rules = array();
+ $match = false;
+ $isOneFound = false;
+ $candidates = array();
+ $defaultUsed = false;
+ $conditionResult = array();
+
+ $args = array();
+ foreach($this->arguments as $a){
+ $args[] = array('name'=> $a['name'], 'value' => $a['value']->compile($env) );
+ }
+
+ foreach($env->frames as $frame){
+
+ $mixins = $frame->find($this->selector);
+
+ if( !$mixins ){
+ continue;
+ }
+
+ $isOneFound = true;
+ $defNone = 0;
+ $defTrue = 1;
+ $defFalse = 2;
+
+ // To make `default()` function independent of definition order we have two "subpasses" here.
+ // At first we evaluate each guard *twice* (with `default() == true` and `default() == false`),
+ // and build candidate list with corresponding flags. Then, when we know all possible matches,
+ // we make a final decision.
+
+ $mixins_len = count($mixins);
+ for( $m = 0; $m < $mixins_len; $m++ ){
+ $mixin = $mixins[$m];
+
+ if( $this->IsRecursive( $env, $mixin ) ){
+ continue;
+ }
+
+ if( $mixin->matchArgs($args, $env) ){
+
+ $candidate = array('mixin' => $mixin, 'group' => $defNone);
+
+ if( $mixin instanceof Less_Tree_Ruleset ){
+
+ for( $f = 0; $f < 2; $f++ ){
+ Less_Tree_DefaultFunc::value($f);
+ $conditionResult[$f] = $mixin->matchCondition( $args, $env);
+ }
+ if( $conditionResult[0] || $conditionResult[1] ){
+ if( $conditionResult[0] != $conditionResult[1] ){
+ $candidate['group'] = $conditionResult[1] ? $defTrue : $defFalse;
+ }
+
+ $candidates[] = $candidate;
+ }
+ }else{
+ $candidates[] = $candidate;
+ }
+
+ $match = true;
+ }
+ }
+
+ Less_Tree_DefaultFunc::reset();
+
+
+ $count = array(0, 0, 0);
+ for( $m = 0; $m < count($candidates); $m++ ){
+ $count[ $candidates[$m]['group'] ]++;
+ }
+
+ if( $count[$defNone] > 0 ){
+ $defaultResult = $defFalse;
+ } else {
+ $defaultResult = $defTrue;
+ if( ($count[$defTrue] + $count[$defFalse]) > 1 ){
+ throw new Exception( 'Ambiguous use of `default()` found when matching for `' . $this->format($args) . '`' );
+ }
+ }
+
+
+ $candidates_length = count($candidates);
+ $length_1 = ($candidates_length == 1);
+
+ for( $m = 0; $m < $candidates_length; $m++){
+ $candidate = $candidates[$m]['group'];
+ if( ($candidate === $defNone) || ($candidate === $defaultResult) ){
+ try{
+ $mixin = $candidates[$m]['mixin'];
+ if( !($mixin instanceof Less_Tree_Mixin_Definition) ){
+ $mixin = new Less_Tree_Mixin_Definition('', array(), $mixin->rules, null, false);
+ $mixin->originalRuleset = $mixins[$m]->originalRuleset;
+ }
+ $rules = array_merge($rules, $mixin->evalCall($env, $args, $this->important)->rules);
+ } catch (Exception $e) {
+ //throw new Less_Exception_Compiler($e->getMessage(), $e->index, null, $this->currentFileInfo['filename']);
+ throw new Less_Exception_Compiler($e->getMessage(), null, null, $this->currentFileInfo);
+ }
+ }
+ }
+
+ if( $match ){
+ if( !$this->currentFileInfo || !isset($this->currentFileInfo['reference']) || !$this->currentFileInfo['reference'] ){
+ Less_Tree::ReferencedArray($rules);
+ }
+
+ return $rules;
+ }
+ }
+
+ if( $isOneFound ){
+ throw new Less_Exception_Compiler('No matching definition was found for `'.$this->Format( $args ).'`', null, $this->index, $this->currentFileInfo);
+
+ }else{
+ throw new Less_Exception_Compiler(trim($this->selector->toCSS()) . " is undefined in ".$this->currentFileInfo['filename'], null, $this->index);
+ }
+
+ }
+
+ /**
+ * Format the args for use in exception messages
+ *
+ */
+ private function Format($args){
+ $message = array();
+ if( $args ){
+ foreach($args as $a){
+ $argValue = '';
+ if( $a['name'] ){
+ $argValue .= $a['name'] . ':';
+ }
+ if( is_object($a['value']) ){
+ $argValue .= $a['value']->toCSS();
+ }else{
+ $argValue .= '???';
+ }
+ $message[] = $argValue;
+ }
+ }
+ return implode(', ',$message);
+ }
+
+
+ /**
+ * Are we in a recursive mixin call?
+ *
+ * @return bool
+ */
+ private function IsRecursive( $env, $mixin ){
+
+ foreach($env->frames as $recur_frame){
+ if( !($mixin instanceof Less_Tree_Mixin_Definition) ){
+
+ if( $mixin === $recur_frame ){
+ return true;
+ }
+
+ if( isset($recur_frame->originalRuleset) && $mixin->ruleset_id === $recur_frame->originalRuleset ){
+ return true;
+ }
+ }
+ }
+
+ return false;
+ }
+
+}
+
+
diff --git a/lib/less.php/Tree/Mixin/Definition.php b/lib/less.php/Tree/Mixin/Definition.php
new file mode 100644
index 0000000..b16d688
--- /dev/null
+++ b/lib/less.php/Tree/Mixin/Definition.php
@@ -0,0 +1,241 @@
+<?php
+
+class Less_Tree_Mixin_Definition extends Less_Tree_Ruleset{
+ public $name;
+ public $selectors;
+ public $params;
+ public $arity = 0;
+ public $rules;
+ public $lookups = array();
+ public $required = 0;
+ public $frames = array();
+ public $condition;
+ public $variadic;
+ public $type = 'MixinDefinition';
+
+
+ // less.js : /lib/less/tree/mixin.js : tree.mixin.Definition
+ public function __construct($name, $params, $rules, $condition, $variadic = false, $frames = array() ){
+ $this->name = $name;
+ $this->selectors = array(new Less_Tree_Selector(array( new Less_Tree_Element(null, $name))));
+
+ $this->params = $params;
+ $this->condition = $condition;
+ $this->variadic = $variadic;
+ $this->rules = $rules;
+
+ if( $params ){
+ $this->arity = count($params);
+ foreach( $params as $p ){
+ if (! isset($p['name']) || ($p['name'] && !isset($p['value']))) {
+ $this->required++;
+ }
+ }
+ }
+
+ $this->frames = $frames;
+ $this->SetRulesetIndex();
+ }
+
+
+
+ //function accept( $visitor ){
+ // $this->params = $visitor->visit($this->params);
+ // $this->rules = $visitor->visit($this->rules);
+ // $this->condition = $visitor->visit($this->condition);
+ //}
+
+
+ public function toCSS(){
+ return '';
+ }
+
+ // less.js : /lib/less/tree/mixin.js : tree.mixin.Definition.evalParams
+ public function compileParams($env, $mixinFrames, $args = array() , &$evaldArguments = array() ){
+ $frame = new Less_Tree_Ruleset(null, array());
+ $params = $this->params;
+ $mixinEnv = null;
+ $argsLength = 0;
+
+ if( $args ){
+ $argsLength = count($args);
+ for($i = 0; $i < $argsLength; $i++ ){
+ $arg = $args[$i];
+
+ if( $arg && $arg['name'] ){
+ $isNamedFound = false;
+
+ foreach($params as $j => $param){
+ if( !isset($evaldArguments[$j]) && $arg['name'] === $params[$j]['name']) {
+ $evaldArguments[$j] = $arg['value']->compile($env);
+ array_unshift($frame->rules, new Less_Tree_Rule( $arg['name'], $arg['value']->compile($env) ) );
+ $isNamedFound = true;
+ break;
+ }
+ }
+ if ($isNamedFound) {
+ array_splice($args, $i, 1);
+ $i--;
+ $argsLength--;
+ continue;
+ } else {
+ throw new Less_Exception_Compiler("Named argument for " . $this->name .' '.$args[$i]['name'] . ' not found');
+ }
+ }
+ }
+ }
+
+ $argIndex = 0;
+ foreach($params as $i => $param){
+
+ if ( isset($evaldArguments[$i]) ){ continue; }
+
+ $arg = null;
+ if( isset($args[$argIndex]) ){
+ $arg = $args[$argIndex];
+ }
+
+ if (isset($param['name']) && $param['name']) {
+
+ if( isset($param['variadic']) ){
+ $varargs = array();
+ for ($j = $argIndex; $j < $argsLength; $j++) {
+ $varargs[] = $args[$j]['value']->compile($env);
+ }
+ $expression = new Less_Tree_Expression($varargs);
+ array_unshift($frame->rules, new Less_Tree_Rule($param['name'], $expression->compile($env)));
+ }else{
+ $val = ($arg && $arg['value']) ? $arg['value'] : false;
+
+ if ($val) {
+ $val = $val->compile($env);
+ } else if ( isset($param['value']) ) {
+
+ if( !$mixinEnv ){
+ $mixinEnv = new Less_Environment();
+ $mixinEnv->frames = array_merge( array($frame), $mixinFrames);
+ }
+
+ $val = $param['value']->compile($mixinEnv);
+ $frame->resetCache();
+ } else {
+ throw new Less_Exception_Compiler("Wrong number of arguments for " . $this->name . " (" . $argsLength . ' for ' . $this->arity . ")");
+ }
+
+ array_unshift($frame->rules, new Less_Tree_Rule($param['name'], $val));
+ $evaldArguments[$i] = $val;
+ }
+ }
+
+ if ( isset($param['variadic']) && $args) {
+ for ($j = $argIndex; $j < $argsLength; $j++) {
+ $evaldArguments[$j] = $args[$j]['value']->compile($env);
+ }
+ }
+ $argIndex++;
+ }
+
+ ksort($evaldArguments);
+ $evaldArguments = array_values($evaldArguments);
+
+ return $frame;
+ }
+
+ public function compile($env) {
+ if( $this->frames ){
+ return new Less_Tree_Mixin_Definition($this->name, $this->params, $this->rules, $this->condition, $this->variadic, $this->frames );
+ }
+ return new Less_Tree_Mixin_Definition($this->name, $this->params, $this->rules, $this->condition, $this->variadic, $env->frames );
+ }
+
+ public function evalCall($env, $args = NULL, $important = NULL) {
+
+ Less_Environment::$mixin_stack++;
+
+ $_arguments = array();
+
+ if( $this->frames ){
+ $mixinFrames = array_merge($this->frames, $env->frames);
+ }else{
+ $mixinFrames = $env->frames;
+ }
+
+ $frame = $this->compileParams($env, $mixinFrames, $args, $_arguments);
+
+ $ex = new Less_Tree_Expression($_arguments);
+ array_unshift($frame->rules, new Less_Tree_Rule('@arguments', $ex->compile($env)));
+
+
+ $ruleset = new Less_Tree_Ruleset(null, $this->rules);
+ $ruleset->originalRuleset = $this->ruleset_id;
+
+
+ $ruleSetEnv = new Less_Environment();
+ $ruleSetEnv->frames = array_merge( array($this, $frame), $mixinFrames );
+ $ruleset = $ruleset->compile( $ruleSetEnv );
+
+ if( $important ){
+ $ruleset = $ruleset->makeImportant();
+ }
+
+ Less_Environment::$mixin_stack--;
+
+ return $ruleset;
+ }
+
+
+ public function matchCondition($args, $env) {
+
+ if( !$this->condition ){
+ return true;
+ }
+
+ // set array to prevent error on array_merge
+ if(!is_array($this->frames)) {
+ $this->frames = array();
+ }
+
+ $frame = $this->compileParams($env, array_merge($this->frames,$env->frames), $args );
+
+ $compile_env = new Less_Environment();
+ $compile_env->frames = array_merge(
+ array($frame) // the parameter variables
+ , $this->frames // the parent namespace/mixin frames
+ , $env->frames // the current environment frames
+ );
+
+ $compile_env->functions = $env->functions;
+
+ return (bool)$this->condition->compile($compile_env);
+ }
+
+ public function matchArgs($args, $env = NULL){
+ $argsLength = count($args);
+
+ if( !$this->variadic ){
+ if( $argsLength < $this->required ){
+ return false;
+ }
+ if( $argsLength > count($this->params) ){
+ return false;
+ }
+ }else{
+ if( $argsLength < ($this->required - 1)){
+ return false;
+ }
+ }
+
+ $len = min($argsLength, $this->arity);
+
+ for( $i = 0; $i < $len; $i++ ){
+ if( !isset($this->params[$i]['name']) && !isset($this->params[$i]['variadic']) ){
+ if( $args[$i]['value']->compile($env)->toCSS() != $this->params[$i]['value']->compile($env)->toCSS() ){
+ return false;
+ }
+ }
+ }
+
+ return true;
+ }
+
+}
diff --git a/lib/less.php/Tree/NameValue.php b/lib/less.php/Tree/NameValue.php
new file mode 100644
index 0000000..31cbe03
--- /dev/null
+++ b/lib/less.php/Tree/NameValue.php
@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * A simple css name-value pair
+ * ex: width:100px;
+ *
+ * In bootstrap, there are about 600-1,000 simple name-value pairs (depending on how forgiving the match is) -vs- 6,020 dynamic rules (Less_Tree_Rule)
+ * Using the name-value object can speed up bootstrap compilation slightly, but it breaks color keyword interpretation: color:red -> color:#FF0000;
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_NameValue extends Less_Tree{
+
+ public $name;
+ public $value;
+ public $index;
+ public $currentFileInfo;
+ public $type = 'NameValue';
+ public $important = '';
+
+ public function __construct($name, $value = null, $index = null, $currentFileInfo = null ){
+ $this->name = $name;
+ $this->value = $value;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function genCSS( $output ){
+
+ $output->add(
+ $this->name
+ . Less_Environment::$_outputMap[': ']
+ . $this->value
+ . $this->important
+ . (((Less_Environment::$lastRule && Less_Parser::$options['compress'])) ? "" : ";")
+ , $this->currentFileInfo, $this->index);
+ }
+
+ public function compile ($env){
+ return $this;
+ }
+
+ public function makeImportant(){
+ $new = new Less_Tree_NameValue($this->name, $this->value, $this->index, $this->currentFileInfo);
+ $new->important = ' !important';
+ return $new;
+ }
+
+
+}
diff --git a/lib/less.php/Tree/Negative.php b/lib/less.php/Tree/Negative.php
new file mode 100644
index 0000000..507443e
--- /dev/null
+++ b/lib/less.php/Tree/Negative.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Negative
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Negative extends Less_Tree{
+
+ public $value;
+ public $type = 'Negative';
+
+ public function __construct($node){
+ $this->value = $node;
+ }
+
+ //function accept($visitor) {
+ // $this->value = $visitor->visit($this->value);
+ //}
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( '-' );
+ $this->value->genCSS( $output );
+ }
+
+ public function compile($env) {
+ if( Less_Environment::isMathOn() ){
+ $ret = new Less_Tree_Operation('*', array( new Less_Tree_Dimension(-1), $this->value ) );
+ return $ret->compile($env);
+ }
+ return new Less_Tree_Negative( $this->value->compile($env) );
+ }
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/Operation.php b/lib/less.php/Tree/Operation.php
new file mode 100644
index 0000000..e69e0da
--- /dev/null
+++ b/lib/less.php/Tree/Operation.php
@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * Operation
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Operation extends Less_Tree{
+
+ public $op;
+ public $operands;
+ public $isSpaced;
+ public $type = 'Operation';
+
+ /**
+ * @param string $op
+ */
+ public function __construct($op, $operands, $isSpaced = false){
+ $this->op = trim($op);
+ $this->operands = $operands;
+ $this->isSpaced = $isSpaced;
+ }
+
+ public function accept($visitor) {
+ $this->operands = $visitor->visitArray($this->operands);
+ }
+
+ public function compile($env){
+ $a = $this->operands[0]->compile($env);
+ $b = $this->operands[1]->compile($env);
+
+
+ if( Less_Environment::isMathOn() ){
+
+ if( $a instanceof Less_Tree_Dimension && $b instanceof Less_Tree_Color ){
+ $a = $a->toColor();
+
+ }elseif( $b instanceof Less_Tree_Dimension && $a instanceof Less_Tree_Color ){
+ $b = $b->toColor();
+
+ }
+
+ if( !method_exists($a,'operate') ){
+ throw new Less_Exception_Compiler("Operation on an invalid type");
+ }
+
+ return $a->operate( $this->op, $b);
+ }
+
+ return new Less_Tree_Operation($this->op, array($a, $b), $this->isSpaced );
+ }
+
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $this->operands[0]->genCSS( $output );
+ if( $this->isSpaced ){
+ $output->add( " " );
+ }
+ $output->add( $this->op );
+ if( $this->isSpaced ){
+ $output->add( ' ' );
+ }
+ $this->operands[1]->genCSS( $output );
+ }
+
+}
diff --git a/lib/less.php/Tree/Paren.php b/lib/less.php/Tree/Paren.php
new file mode 100644
index 0000000..0186455
--- /dev/null
+++ b/lib/less.php/Tree/Paren.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Paren
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Paren extends Less_Tree{
+
+ public $value;
+ public $type = 'Paren';
+
+ public function __construct($value) {
+ $this->value = $value;
+ }
+
+ public function accept($visitor){
+ $this->value = $visitor->visitObj($this->value);
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( '(' );
+ $this->value->genCSS( $output );
+ $output->add( ')' );
+ }
+
+ public function compile($env) {
+ return new Less_Tree_Paren($this->value->compile($env));
+ }
+
+}
diff --git a/lib/less.php/Tree/Quoted.php b/lib/less.php/Tree/Quoted.php
new file mode 100644
index 0000000..80063b5
--- /dev/null
+++ b/lib/less.php/Tree/Quoted.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * Quoted
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Quoted extends Less_Tree{
+ public $escaped;
+ public $value;
+ public $quote;
+ public $index;
+ public $currentFileInfo;
+ public $type = 'Quoted';
+
+ /**
+ * @param string $str
+ */
+ public function __construct($str, $content = '', $escaped = false, $index = false, $currentFileInfo = null ){
+ $this->escaped = $escaped;
+ $this->value = $content;
+ if( $str ){
+ $this->quote = $str[0];
+ }
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ if( !$this->escaped ){
+ $output->add( $this->quote, $this->currentFileInfo, $this->index );
+ }
+ $output->add( $this->value );
+ if( !$this->escaped ){
+ $output->add( $this->quote );
+ }
+ }
+
+ public function compile($env){
+
+ $value = $this->value;
+ if( preg_match_all('/`([^`]+)`/', $this->value, $matches) ){
+ foreach($matches as $i => $match){
+ $js = new Less_Tree_JavaScript($matches[1], $this->index, true);
+ $js = $js->compile()->value;
+ $value = str_replace($matches[0][$i], $js, $value);
+ }
+ }
+
+ if( preg_match_all('/@\{([\w-]+)\}/',$value,$matches) ){
+ foreach($matches[1] as $i => $match){
+ $v = new Less_Tree_Variable('@' . $match, $this->index, $this->currentFileInfo );
+ $v = $v->compile($env);
+ $v = ($v instanceof Less_Tree_Quoted) ? $v->value : $v->toCSS();
+ $value = str_replace($matches[0][$i], $v, $value);
+ }
+ }
+
+ return new Less_Tree_Quoted($this->quote . $value . $this->quote, $value, $this->escaped, $this->index, $this->currentFileInfo);
+ }
+
+ public function compare($x) {
+
+ if( !Less_Parser::is_method($x, 'toCSS') ){
+ return -1;
+ }
+
+ $left = $this->toCSS();
+ $right = $x->toCSS();
+
+ if ($left === $right) {
+ return 0;
+ }
+
+ return $left < $right ? -1 : 1;
+ }
+}
diff --git a/lib/less.php/Tree/Rule.php b/lib/less.php/Tree/Rule.php
new file mode 100644
index 0000000..ee4a9e2
--- /dev/null
+++ b/lib/less.php/Tree/Rule.php
@@ -0,0 +1,115 @@
+<?php
+
+/**
+ * Rule
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Rule extends Less_Tree{
+
+ public $name;
+ public $value;
+ public $important;
+ public $merge;
+ public $index;
+ public $inline;
+ public $variable;
+ public $currentFileInfo;
+ public $type = 'Rule';
+
+ /**
+ * @param string $important
+ */
+ public function __construct($name, $value = null, $important = null, $merge = null, $index = null, $currentFileInfo = null, $inline = false){
+ $this->name = $name;
+ $this->value = ($value instanceof Less_Tree_Value || $value instanceof Less_Tree_Ruleset) ? $value : new Less_Tree_Value(array($value));
+ $this->important = $important ? ' ' . trim($important) : '';
+ $this->merge = $merge;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ $this->inline = $inline;
+ $this->variable = ( is_string($name) && $name[0] === '@');
+ }
+
+ public function accept($visitor) {
+ $this->value = $visitor->visitObj( $this->value );
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ $output->add( $this->name . Less_Environment::$_outputMap[': '], $this->currentFileInfo, $this->index);
+ try{
+ $this->value->genCSS( $output);
+
+ }catch( Less_Exception_Parser $e ){
+ $e->index = $this->index;
+ $e->currentFile = $this->currentFileInfo;
+ throw $e;
+ }
+ $output->add( $this->important . (($this->inline || (Less_Environment::$lastRule && Less_Parser::$options['compress'])) ? "" : ";"), $this->currentFileInfo, $this->index);
+ }
+
+ public function compile ($env){
+
+ $name = $this->name;
+ if( is_array($name) ){
+ // expand 'primitive' name directly to get
+ // things faster (~10% for benchmark.less):
+ if( count($name) === 1 && $name[0] instanceof Less_Tree_Keyword ){
+ $name = $name[0]->value;
+ }else{
+ $name = $this->CompileName($env,$name);
+ }
+ }
+
+ $strictMathBypass = Less_Parser::$options['strictMath'];
+ if( $name === "font" && !Less_Parser::$options['strictMath'] ){
+ Less_Parser::$options['strictMath'] = true;
+ }
+
+ try {
+ $evaldValue = $this->value->compile($env);
+
+ if( !$this->variable && $evaldValue->type === "DetachedRuleset") {
+ throw new Less_Exception_Compiler("Rulesets cannot be evaluated on a property.", null, $this->index, $this->currentFileInfo);
+ }
+
+ if( Less_Environment::$mixin_stack ){
+ $return = new Less_Tree_Rule($name, $evaldValue, $this->important, $this->merge, $this->index, $this->currentFileInfo, $this->inline);
+ }else{
+ $this->name = $name;
+ $this->value = $evaldValue;
+ $return = $this;
+ }
+
+ }catch( Less_Exception_Parser $e ){
+ if( !is_numeric($e->index) ){
+ $e->index = $this->index;
+ $e->currentFile = $this->currentFileInfo;
+ }
+ throw $e;
+ }
+
+ Less_Parser::$options['strictMath'] = $strictMathBypass;
+
+ return $return;
+ }
+
+
+ public function CompileName( $env, $name ){
+ $output = new Less_Output();
+ foreach($name as $n){
+ $n->compile($env)->genCSS($output);
+ }
+ return $output->toString();
+ }
+
+ public function makeImportant(){
+ return new Less_Tree_Rule($this->name, $this->value, '!important', $this->merge, $this->index, $this->currentFileInfo, $this->inline);
+ }
+
+}
diff --git a/lib/less.php/Tree/Ruleset.php b/lib/less.php/Tree/Ruleset.php
new file mode 100644
index 0000000..bdf9fec
--- /dev/null
+++ b/lib/less.php/Tree/Ruleset.php
@@ -0,0 +1,643 @@
+<?php
+
+/**
+ * Ruleset
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Ruleset extends Less_Tree{
+
+ protected $lookups;
+ public $_variables;
+ public $_rulesets;
+
+ public $strictImports;
+
+ public $selectors;
+ public $rules;
+ public $root;
+ public $allowImports;
+ public $paths;
+ public $firstRoot;
+ public $type = 'Ruleset';
+ public $multiMedia;
+ public $allExtends;
+
+ public $ruleset_id;
+ public $originalRuleset;
+
+ public $first_oelements;
+
+ public function SetRulesetIndex(){
+ $this->ruleset_id = Less_Parser::$next_id++;
+ $this->originalRuleset = $this->ruleset_id;
+
+ if( $this->selectors ){
+ foreach($this->selectors as $sel){
+ if( $sel->_oelements ){
+ $this->first_oelements[$sel->_oelements[0]] = true;
+ }
+ }
+ }
+ }
+
+ public function __construct($selectors, $rules, $strictImports = null){
+ $this->selectors = $selectors;
+ $this->rules = $rules;
+ $this->lookups = array();
+ $this->strictImports = $strictImports;
+ $this->SetRulesetIndex();
+ }
+
+ public function accept( $visitor ){
+ if( $this->paths ){
+ $paths_len = count($this->paths);
+ for($i = 0,$paths_len; $i < $paths_len; $i++ ){
+ $this->paths[$i] = $visitor->visitArray($this->paths[$i]);
+ }
+ }elseif( $this->selectors ){
+ $this->selectors = $visitor->visitArray($this->selectors);
+ }
+
+ if( $this->rules ){
+ $this->rules = $visitor->visitArray($this->rules);
+ }
+ }
+
+ public function compile($env){
+
+ $ruleset = $this->PrepareRuleset($env);
+
+
+ // Store the frames around mixin definitions,
+ // so they can be evaluated like closures when the time comes.
+ $rsRuleCnt = count($ruleset->rules);
+ for( $i = 0; $i < $rsRuleCnt; $i++ ){
+ if( $ruleset->rules[$i] instanceof Less_Tree_Mixin_Definition || $ruleset->rules[$i] instanceof Less_Tree_DetachedRuleset ){
+ $ruleset->rules[$i] = $ruleset->rules[$i]->compile($env);
+ }
+ }
+
+ $mediaBlockCount = 0;
+ if( $env instanceof Less_Environment ){
+ $mediaBlockCount = count($env->mediaBlocks);
+ }
+
+ // Evaluate mixin calls.
+ $this->EvalMixinCalls( $ruleset, $env, $rsRuleCnt );
+
+
+ // Evaluate everything else
+ for( $i=0; $i<$rsRuleCnt; $i++ ){
+ if(! ($ruleset->rules[$i] instanceof Less_Tree_Mixin_Definition || $ruleset->rules[$i] instanceof Less_Tree_DetachedRuleset) ){
+ $ruleset->rules[$i] = $ruleset->rules[$i]->compile($env);
+ }
+ }
+
+ // Evaluate everything else
+ for( $i=0; $i<$rsRuleCnt; $i++ ){
+ $rule = $ruleset->rules[$i];
+
+ // for rulesets, check if it is a css guard and can be removed
+ if( $rule instanceof Less_Tree_Ruleset && $rule->selectors && count($rule->selectors) === 1 ){
+
+ // check if it can be folded in (e.g. & where)
+ if( $rule->selectors[0]->isJustParentSelector() ){
+ array_splice($ruleset->rules,$i--,1);
+ $rsRuleCnt--;
+
+ for($j = 0; $j < count($rule->rules); $j++ ){
+ $subRule = $rule->rules[$j];
+ if( !($subRule instanceof Less_Tree_Rule) || !$subRule->variable ){
+ array_splice($ruleset->rules, ++$i, 0, array($subRule));
+ $rsRuleCnt++;
+ }
+ }
+
+ }
+ }
+ }
+
+
+ // Pop the stack
+ $env->shiftFrame();
+
+ if ($mediaBlockCount) {
+ $len = count($env->mediaBlocks);
+ for($i = $mediaBlockCount; $i < $len; $i++ ){
+ $env->mediaBlocks[$i]->bubbleSelectors($ruleset->selectors);
+ }
+ }
+
+ return $ruleset;
+ }
+
+ /**
+ * Compile Less_Tree_Mixin_Call objects
+ *
+ * @param Less_Tree_Ruleset $ruleset
+ * @param integer $rsRuleCnt
+ */
+ private function EvalMixinCalls( $ruleset, $env, &$rsRuleCnt ){
+ for($i=0; $i < $rsRuleCnt; $i++){
+ $rule = $ruleset->rules[$i];
+
+ if( $rule instanceof Less_Tree_Mixin_Call ){
+ $rule = $rule->compile($env);
+
+ $temp = array();
+ foreach($rule as $r){
+ if( ($r instanceof Less_Tree_Rule) && $r->variable ){
+ // do not pollute the scope if the variable is
+ // already there. consider returning false here
+ // but we need a way to "return" variable from mixins
+ if( !$ruleset->variable($r->name) ){
+ $temp[] = $r;
+ }
+ }else{
+ $temp[] = $r;
+ }
+ }
+ $temp_count = count($temp)-1;
+ array_splice($ruleset->rules, $i, 1, $temp);
+ $rsRuleCnt += $temp_count;
+ $i += $temp_count;
+ $ruleset->resetCache();
+
+ }elseif( $rule instanceof Less_Tree_RulesetCall ){
+
+ $rule = $rule->compile($env);
+ $rules = array();
+ foreach($rule->rules as $r){
+ if( ($r instanceof Less_Tree_Rule) && $r->variable ){
+ continue;
+ }
+ $rules[] = $r;
+ }
+
+ array_splice($ruleset->rules, $i, 1, $rules);
+ $temp_count = count($rules);
+ $rsRuleCnt += $temp_count - 1;
+ $i += $temp_count-1;
+ $ruleset->resetCache();
+ }
+
+ }
+ }
+
+
+ /**
+ * Compile the selectors and create a new ruleset object for the compile() method
+ *
+ */
+ private function PrepareRuleset($env){
+
+ $hasOnePassingSelector = false;
+ $selectors = array();
+ if( $this->selectors ){
+ Less_Tree_DefaultFunc::error("it is currently only allowed in parametric mixin guards,");
+
+ foreach($this->selectors as $s){
+ $selector = $s->compile($env);
+ $selectors[] = $selector;
+ if( $selector->evaldCondition ){
+ $hasOnePassingSelector = true;
+ }
+ }
+
+ Less_Tree_DefaultFunc::reset();
+ } else {
+ $hasOnePassingSelector = true;
+ }
+
+ if( $this->rules && $hasOnePassingSelector ){
+ $rules = $this->rules;
+ }else{
+ $rules = array();
+ }
+
+ $ruleset = new Less_Tree_Ruleset($selectors, $rules, $this->strictImports);
+
+ $ruleset->originalRuleset = $this->ruleset_id;
+
+ $ruleset->root = $this->root;
+ $ruleset->firstRoot = $this->firstRoot;
+ $ruleset->allowImports = $this->allowImports;
+
+
+ // push the current ruleset to the frames stack
+ $env->unshiftFrame($ruleset);
+
+
+ // Evaluate imports
+ if( $ruleset->root || $ruleset->allowImports || !$ruleset->strictImports ){
+ $ruleset->evalImports($env);
+ }
+
+ return $ruleset;
+ }
+
+ function evalImports($env) {
+
+ $rules_len = count($this->rules);
+ for($i=0; $i < $rules_len; $i++){
+ $rule = $this->rules[$i];
+
+ if( $rule instanceof Less_Tree_Import ){
+ $rules = $rule->compile($env);
+ if( is_array($rules) ){
+ array_splice($this->rules, $i, 1, $rules);
+ $temp_count = count($rules)-1;
+ $i += $temp_count;
+ $rules_len += $temp_count;
+ }else{
+ array_splice($this->rules, $i, 1, array($rules));
+ }
+
+ $this->resetCache();
+ }
+ }
+ }
+
+ function makeImportant(){
+
+ $important_rules = array();
+ foreach($this->rules as $rule){
+ if( $rule instanceof Less_Tree_Rule || $rule instanceof Less_Tree_Ruleset || $rule instanceof Less_Tree_NameValue ){
+ $important_rules[] = $rule->makeImportant();
+ }else{
+ $important_rules[] = $rule;
+ }
+ }
+
+ return new Less_Tree_Ruleset($this->selectors, $important_rules, $this->strictImports );
+ }
+
+ public function matchArgs($args){
+ return !$args;
+ }
+
+ // lets you call a css selector with a guard
+ public function matchCondition( $args, $env ){
+ $lastSelector = end($this->selectors);
+
+ if( !$lastSelector->evaldCondition ){
+ return false;
+ }
+ if( $lastSelector->condition && !$lastSelector->condition->compile( $env->copyEvalEnv( $env->frames ) ) ){
+ return false;
+ }
+ return true;
+ }
+
+ function resetCache(){
+ $this->_rulesets = null;
+ $this->_variables = null;
+ $this->lookups = array();
+ }
+
+ public function variables(){
+ $this->_variables = array();
+ foreach( $this->rules as $r){
+ if ($r instanceof Less_Tree_Rule && $r->variable === true) {
+ $this->_variables[$r->name] = $r;
+ }
+ }
+ }
+
+ public function variable($name){
+
+ if( is_null($this->_variables) ){
+ $this->variables();
+ }
+ return isset($this->_variables[$name]) ? $this->_variables[$name] : null;
+ }
+
+ public function find( $selector, $self = null ){
+
+ $key = implode(' ',$selector->_oelements);
+
+ if( !isset($this->lookups[$key]) ){
+
+ if( !$self ){
+ $self = $this->ruleset_id;
+ }
+
+ $this->lookups[$key] = array();
+
+ $first_oelement = $selector->_oelements[0];
+
+ foreach($this->rules as $rule){
+ if( $rule instanceof Less_Tree_Ruleset && $rule->ruleset_id != $self ){
+
+ if( isset($rule->first_oelements[$first_oelement]) ){
+
+ foreach( $rule->selectors as $ruleSelector ){
+ $match = $selector->match($ruleSelector);
+ if( $match ){
+ if( $selector->elements_len > $match ){
+ $this->lookups[$key] = array_merge($this->lookups[$key], $rule->find( new Less_Tree_Selector(array_slice($selector->elements, $match)), $self));
+ } else {
+ $this->lookups[$key][] = $rule;
+ }
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return $this->lookups[$key];
+ }
+
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ if( !$this->root ){
+ Less_Environment::$tabLevel++;
+ }
+
+ $tabRuleStr = $tabSetStr = '';
+ if( !Less_Parser::$options['compress'] ){
+ if( Less_Environment::$tabLevel ){
+ $tabRuleStr = "\n".str_repeat( Less_Parser::$options['indentation'] , Less_Environment::$tabLevel );
+ $tabSetStr = "\n".str_repeat( Less_Parser::$options['indentation'] , Less_Environment::$tabLevel-1 );
+ }else{
+ $tabSetStr = $tabRuleStr = "\n";
+ }
+ }
+
+
+ $ruleNodes = array();
+ $rulesetNodes = array();
+ foreach($this->rules as $rule){
+
+ $class = get_class($rule);
+ if( ($class === 'Less_Tree_Media') || ($class === 'Less_Tree_Directive') || ($this->root && $class === 'Less_Tree_Comment') || ($class === 'Less_Tree_Ruleset' && $rule->rules) ){
+ $rulesetNodes[] = $rule;
+ }else{
+ $ruleNodes[] = $rule;
+ }
+ }
+
+ // If this is the root node, we don't render
+ // a selector, or {}.
+ if( !$this->root ){
+
+ /*
+ debugInfo = tree.debugInfo(env, this, tabSetStr);
+
+ if (debugInfo) {
+ output.add(debugInfo);
+ output.add(tabSetStr);
+ }
+ */
+
+ $paths_len = count($this->paths);
+ for( $i = 0; $i < $paths_len; $i++ ){
+ $path = $this->paths[$i];
+ $firstSelector = true;
+
+ foreach($path as $p){
+ $p->genCSS( $output, $firstSelector );
+ $firstSelector = false;
+ }
+
+ if( $i + 1 < $paths_len ){
+ $output->add( ',' . $tabSetStr );
+ }
+ }
+
+ $output->add( (Less_Parser::$options['compress'] ? '{' : " {") . $tabRuleStr );
+ }
+
+ // Compile rules and rulesets
+ $ruleNodes_len = count($ruleNodes);
+ $rulesetNodes_len = count($rulesetNodes);
+ for( $i = 0; $i < $ruleNodes_len; $i++ ){
+ $rule = $ruleNodes[$i];
+
+ // @page{ directive ends up with root elements inside it, a mix of rules and rulesets
+ // In this instance we do not know whether it is the last property
+ if( $i + 1 === $ruleNodes_len && (!$this->root || $rulesetNodes_len === 0 || $this->firstRoot ) ){
+ Less_Environment::$lastRule = true;
+ }
+
+ $rule->genCSS( $output );
+
+ if( !Less_Environment::$lastRule ){
+ $output->add( $tabRuleStr );
+ }else{
+ Less_Environment::$lastRule = false;
+ }
+ }
+
+ if( !$this->root ){
+ $output->add( $tabSetStr . '}' );
+ Less_Environment::$tabLevel--;
+ }
+
+ $firstRuleset = true;
+ $space = ($this->root ? $tabRuleStr : $tabSetStr);
+ for( $i = 0; $i < $rulesetNodes_len; $i++ ){
+
+ if( $ruleNodes_len && $firstRuleset ){
+ $output->add( $space );
+ }elseif( !$firstRuleset ){
+ $output->add( $space );
+ }
+ $firstRuleset = false;
+ $rulesetNodes[$i]->genCSS( $output);
+ }
+
+ if( !Less_Parser::$options['compress'] && $this->firstRoot ){
+ $output->add( "\n" );
+ }
+
+ }
+
+
+ function markReferenced(){
+ if( !$this->selectors ){
+ return;
+ }
+ foreach($this->selectors as $selector){
+ $selector->markReferenced();
+ }
+ }
+
+ public function joinSelectors( $context, $selectors ){
+ $paths = array();
+ if( is_array($selectors) ){
+ foreach($selectors as $selector) {
+ $this->joinSelector( $paths, $context, $selector);
+ }
+ }
+ return $paths;
+ }
+
+ public function joinSelector( &$paths, $context, $selector){
+
+ $hasParentSelector = false;
+
+ foreach($selector->elements as $el) {
+ if( $el->value === '&') {
+ $hasParentSelector = true;
+ }
+ }
+
+ if( !$hasParentSelector ){
+ if( $context ){
+ foreach($context as $context_el){
+ $paths[] = array_merge($context_el, array($selector) );
+ }
+ }else {
+ $paths[] = array($selector);
+ }
+ return;
+ }
+
+
+ // The paths are [[Selector]]
+ // The first list is a list of comma separated selectors
+ // The inner list is a list of inheritance separated selectors
+ // e.g.
+ // .a, .b {
+ // .c {
+ // }
+ // }
+ // == [[.a] [.c]] [[.b] [.c]]
+ //
+
+ // the elements from the current selector so far
+ $currentElements = array();
+ // the current list of new selectors to add to the path.
+ // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
+ // by the parents
+ $newSelectors = array(array());
+
+
+ foreach( $selector->elements as $el){
+
+ // non parent reference elements just get added
+ if( $el->value !== '&' ){
+ $currentElements[] = $el;
+ } else {
+ // the new list of selectors to add
+ $selectorsMultiplied = array();
+
+ // merge the current list of non parent selector elements
+ // on to the current list of selectors to add
+ if( $currentElements ){
+ $this->mergeElementsOnToSelectors( $currentElements, $newSelectors);
+ }
+
+ // loop through our current selectors
+ foreach($newSelectors as $sel){
+
+ // if we don't have any parent paths, the & might be in a mixin so that it can be used
+ // whether there are parents or not
+ if( !$context ){
+ // the combinator used on el should now be applied to the next element instead so that
+ // it is not lost
+ if( $sel ){
+ $sel[0]->elements = array_slice($sel[0]->elements,0);
+ $sel[0]->elements[] = new Less_Tree_Element($el->combinator, '', $el->index, $el->currentFileInfo );
+ }
+ $selectorsMultiplied[] = $sel;
+ }else {
+
+ // and the parent selectors
+ foreach($context as $parentSel){
+ // We need to put the current selectors
+ // then join the last selector's elements on to the parents selectors
+
+ // our new selector path
+ $newSelectorPath = array();
+ // selectors from the parent after the join
+ $afterParentJoin = array();
+ $newJoinedSelectorEmpty = true;
+
+ //construct the joined selector - if & is the first thing this will be empty,
+ // if not newJoinedSelector will be the last set of elements in the selector
+ if( $sel ){
+ $newSelectorPath = $sel;
+ $lastSelector = array_pop($newSelectorPath);
+ $newJoinedSelector = $selector->createDerived( array_slice($lastSelector->elements,0) );
+ $newJoinedSelectorEmpty = false;
+ }
+ else {
+ $newJoinedSelector = $selector->createDerived(array());
+ }
+
+ //put together the parent selectors after the join
+ if ( count($parentSel) > 1) {
+ $afterParentJoin = array_merge($afterParentJoin, array_slice($parentSel,1) );
+ }
+
+ if ( $parentSel ){
+ $newJoinedSelectorEmpty = false;
+
+ // join the elements so far with the first part of the parent
+ $newJoinedSelector->elements[] = new Less_Tree_Element( $el->combinator, $parentSel[0]->elements[0]->value, $el->index, $el->currentFileInfo);
+
+ $newJoinedSelector->elements = array_merge( $newJoinedSelector->elements, array_slice($parentSel[0]->elements, 1) );
+ }
+
+ if (!$newJoinedSelectorEmpty) {
+ // now add the joined selector
+ $newSelectorPath[] = $newJoinedSelector;
+ }
+
+ // and the rest of the parent
+ $newSelectorPath = array_merge($newSelectorPath, $afterParentJoin);
+
+ // add that to our new set of selectors
+ $selectorsMultiplied[] = $newSelectorPath;
+ }
+ }
+ }
+
+ // our new selectors has been multiplied, so reset the state
+ $newSelectors = $selectorsMultiplied;
+ $currentElements = array();
+ }
+ }
+
+ // if we have any elements left over (e.g. .a& .b == .b)
+ // add them on to all the current selectors
+ if( $currentElements ){
+ $this->mergeElementsOnToSelectors($currentElements, $newSelectors);
+ }
+ foreach( $newSelectors as $new_sel){
+ if( $new_sel ){
+ $paths[] = $new_sel;
+ }
+ }
+ }
+
+ function mergeElementsOnToSelectors( $elements, &$selectors){
+
+ if( !$selectors ){
+ $selectors[] = array( new Less_Tree_Selector($elements) );
+ return;
+ }
+
+
+ foreach( $selectors as &$sel){
+
+ // if the previous thing in sel is a parent this needs to join on to it
+ if( $sel ){
+ $last = count($sel)-1;
+ $sel[$last] = $sel[$last]->createDerived( array_merge($sel[$last]->elements, $elements) );
+ }else{
+ $sel[] = new Less_Tree_Selector( $elements );
+ }
+ }
+ }
+}
diff --git a/lib/less.php/Tree/RulesetCall.php b/lib/less.php/Tree/RulesetCall.php
new file mode 100644
index 0000000..ed4c723
--- /dev/null
+++ b/lib/less.php/Tree/RulesetCall.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * RulesetCall
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_RulesetCall extends Less_Tree{
+
+ public $variable;
+ public $type = "RulesetCall";
+
+ public function __construct($variable){
+ $this->variable = $variable;
+ }
+
+ public function accept($visitor) {}
+
+ public function compile( $env ){
+ $variable = new Less_Tree_Variable($this->variable);
+ $detachedRuleset = $variable->compile($env);
+ return $detachedRuleset->callEval($env);
+ }
+}
+
diff --git a/lib/less.php/Tree/Selector.php b/lib/less.php/Tree/Selector.php
new file mode 100644
index 0000000..6b9dae6
--- /dev/null
+++ b/lib/less.php/Tree/Selector.php
@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * Selector
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Selector extends Less_Tree{
+
+ public $elements;
+ public $condition;
+ public $extendList = array();
+ public $_css;
+ public $index;
+ public $evaldCondition = false;
+ public $type = 'Selector';
+ public $currentFileInfo = array();
+ public $isReferenced;
+ public $mediaEmpty;
+
+ public $elements_len = 0;
+
+ public $_oelements;
+ public $_oelements_len;
+ public $cacheable = true;
+
+ /**
+ * @param boolean $isReferenced
+ */
+ public function __construct( $elements, $extendList = array() , $condition = null, $index=null, $currentFileInfo=null, $isReferenced=null ){
+
+ $this->elements = $elements;
+ $this->elements_len = count($elements);
+ $this->extendList = $extendList;
+ $this->condition = $condition;
+ if( $currentFileInfo ){
+ $this->currentFileInfo = $currentFileInfo;
+ }
+ $this->isReferenced = $isReferenced;
+ if( !$condition ){
+ $this->evaldCondition = true;
+ }
+
+ $this->CacheElements();
+ }
+
+ public function accept($visitor) {
+ $this->elements = $visitor->visitArray($this->elements);
+ $this->extendList = $visitor->visitArray($this->extendList);
+ if( $this->condition ){
+ $this->condition = $visitor->visitObj($this->condition);
+ }
+
+ if( $visitor instanceof Less_Visitor_extendFinder ){
+ $this->CacheElements();
+ }
+ }
+
+ public function createDerived( $elements, $extendList = null, $evaldCondition = null ){
+ $newSelector = new Less_Tree_Selector( $elements, ($extendList ? $extendList : $this->extendList), null, $this->index, $this->currentFileInfo, $this->isReferenced);
+ $newSelector->evaldCondition = $evaldCondition ? $evaldCondition : $this->evaldCondition;
+ return $newSelector;
+ }
+
+
+ public function match( $other ){
+
+ if( !$other->_oelements || ($this->elements_len < $other->_oelements_len) ){
+ return 0;
+ }
+
+ for( $i = 0; $i < $other->_oelements_len; $i++ ){
+ if( $this->elements[$i]->value !== $other->_oelements[$i]) {
+ return 0;
+ }
+ }
+
+ return $other->_oelements_len; // return number of matched elements
+ }
+
+
+ public function CacheElements(){
+
+ $this->_oelements = array();
+ $css = '';
+
+ foreach($this->elements as $v){
+
+ $css .= $v->combinator;
+ if( !$v->value_is_object ){
+ $css .= $v->value;
+ continue;
+ }
+
+ if( !property_exists($v->value,'value') || !is_string($v->value->value) ){
+ $this->cacheable = false;
+ return;
+ }
+ $css .= $v->value->value;
+ }
+
+ $this->_oelements_len = preg_match_all('/[,&#\.\w-](?:[\w-]|(?:\\\\.))*/', $css, $matches);
+ if( $this->_oelements_len ){
+ $this->_oelements = $matches[0];
+
+ if( $this->_oelements[0] === '&' ){
+ array_shift($this->_oelements);
+ $this->_oelements_len--;
+ }
+ }
+ }
+
+ public function isJustParentSelector(){
+ return !$this->mediaEmpty &&
+ count($this->elements) === 1 &&
+ $this->elements[0]->value === '&' &&
+ ($this->elements[0]->combinator === ' ' || $this->elements[0]->combinator === '');
+ }
+
+ public function compile($env) {
+
+ $elements = array();
+ foreach($this->elements as $el){
+ $elements[] = $el->compile($env);
+ }
+
+ $extendList = array();
+ foreach($this->extendList as $el){
+ $extendList[] = $el->compile($el);
+ }
+
+ $evaldCondition = false;
+ if( $this->condition ){
+ $evaldCondition = $this->condition->compile($env);
+ }
+
+ return $this->createDerived( $elements, $extendList, $evaldCondition );
+ }
+
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output, $firstSelector = true ){
+
+ if( !$firstSelector && $this->elements[0]->combinator === "" ){
+ $output->add(' ', $this->currentFileInfo, $this->index);
+ }
+
+ foreach($this->elements as $element){
+ $element->genCSS( $output );
+ }
+ }
+
+ public function markReferenced(){
+ $this->isReferenced = true;
+ }
+
+ public function getIsReferenced(){
+ return !isset($this->currentFileInfo['reference']) || !$this->currentFileInfo['reference'] || $this->isReferenced;
+ }
+
+ public function getIsOutput(){
+ return $this->evaldCondition;
+ }
+
+}
diff --git a/lib/less.php/Tree/UnicodeDescriptor.php b/lib/less.php/Tree/UnicodeDescriptor.php
new file mode 100644
index 0000000..8c4707e
--- /dev/null
+++ b/lib/less.php/Tree/UnicodeDescriptor.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * UnicodeDescriptor
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_UnicodeDescriptor extends Less_Tree{
+
+ public $value;
+ public $type = 'UnicodeDescriptor';
+
+ public function __construct($value){
+ $this->value = $value;
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( $this->value );
+ }
+
+ public function compile(){
+ return $this;
+ }
+}
+
diff --git a/lib/less.php/Tree/Unit.php b/lib/less.php/Tree/Unit.php
new file mode 100644
index 0000000..e13b100
--- /dev/null
+++ b/lib/less.php/Tree/Unit.php
@@ -0,0 +1,147 @@
+<?php
+
+/**
+ * Unit
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Unit extends Less_Tree{
+
+ var $numerator = array();
+ var $denominator = array();
+ public $backupUnit;
+ public $type = 'Unit';
+
+ public function __construct($numerator = array(), $denominator = array(), $backupUnit = null ){
+ $this->numerator = $numerator;
+ $this->denominator = $denominator;
+ $this->backupUnit = $backupUnit;
+ }
+
+ public function __clone(){
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ if( $this->numerator ){
+ $output->add( $this->numerator[0] );
+ }elseif( $this->denominator ){
+ $output->add( $this->denominator[0] );
+ }elseif( !Less_Parser::$options['strictUnits'] && $this->backupUnit ){
+ $output->add( $this->backupUnit );
+ return ;
+ }
+ }
+
+ public function toString(){
+ $returnStr = implode('*',$this->numerator);
+ foreach($this->denominator as $d){
+ $returnStr .= '/'.$d;
+ }
+ return $returnStr;
+ }
+
+ public function __toString(){
+ return $this->toString();
+ }
+
+
+ /**
+ * @param Less_Tree_Unit $other
+ */
+ public function compare($other) {
+ return $this->is( $other->toString() ) ? 0 : -1;
+ }
+
+ public function is($unitString){
+ return $this->toString() === $unitString;
+ }
+
+ public function isLength(){
+ $css = $this->toCSS();
+ return !!preg_match('/px|em|%|in|cm|mm|pc|pt|ex/',$css);
+ }
+
+ public function isAngle() {
+ return isset( Less_Tree_UnitConversions::$angle[$this->toCSS()] );
+ }
+
+ public function isEmpty(){
+ return !$this->numerator && !$this->denominator;
+ }
+
+ public function isSingular() {
+ return count($this->numerator) <= 1 && !$this->denominator;
+ }
+
+
+ public function usedUnits(){
+ $result = array();
+
+ foreach(Less_Tree_UnitConversions::$groups as $groupName){
+ $group = Less_Tree_UnitConversions::${$groupName};
+
+ foreach($this->numerator as $atomicUnit){
+ if( isset($group[$atomicUnit]) && !isset($result[$groupName]) ){
+ $result[$groupName] = $atomicUnit;
+ }
+ }
+
+ foreach($this->denominator as $atomicUnit){
+ if( isset($group[$atomicUnit]) && !isset($result[$groupName]) ){
+ $result[$groupName] = $atomicUnit;
+ }
+ }
+ }
+
+ return $result;
+ }
+
+ public function cancel(){
+ $counter = array();
+ $backup = null;
+
+ foreach($this->numerator as $atomicUnit){
+ if( !$backup ){
+ $backup = $atomicUnit;
+ }
+ $counter[$atomicUnit] = ( isset($counter[$atomicUnit]) ? $counter[$atomicUnit] : 0) + 1;
+ }
+
+ foreach($this->denominator as $atomicUnit){
+ if( !$backup ){
+ $backup = $atomicUnit;
+ }
+ $counter[$atomicUnit] = ( isset($counter[$atomicUnit]) ? $counter[$atomicUnit] : 0) - 1;
+ }
+
+ $this->numerator = array();
+ $this->denominator = array();
+
+ foreach($counter as $atomicUnit => $count){
+ if( $count > 0 ){
+ for( $i = 0; $i < $count; $i++ ){
+ $this->numerator[] = $atomicUnit;
+ }
+ }elseif( $count < 0 ){
+ for( $i = 0; $i < -$count; $i++ ){
+ $this->denominator[] = $atomicUnit;
+ }
+ }
+ }
+
+ if( !$this->numerator && !$this->denominator && $backup ){
+ $this->backupUnit = $backup;
+ }
+
+ sort($this->numerator);
+ sort($this->denominator);
+ }
+
+
+}
+
diff --git a/lib/less.php/Tree/UnitConversions.php b/lib/less.php/Tree/UnitConversions.php
new file mode 100644
index 0000000..c86b290
--- /dev/null
+++ b/lib/less.php/Tree/UnitConversions.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * UnitConversions
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_UnitConversions{
+
+ public static $groups = array('length','duration','angle');
+
+ public static $length = array(
+ 'm'=> 1,
+ 'cm'=> 0.01,
+ 'mm'=> 0.001,
+ 'in'=> 0.0254,
+ 'px'=> 0.000264583, // 0.0254 / 96,
+ 'pt'=> 0.000352778, // 0.0254 / 72,
+ 'pc'=> 0.004233333, // 0.0254 / 72 * 12
+ );
+
+ public static $duration = array(
+ 's'=> 1,
+ 'ms'=> 0.001
+ );
+
+ public static $angle = array(
+ 'rad' => 0.1591549430919, // 1/(2*M_PI),
+ 'deg' => 0.002777778, // 1/360,
+ 'grad'=> 0.0025, // 1/400,
+ 'turn'=> 1
+ );
+
+} \ No newline at end of file
diff --git a/lib/less.php/Tree/Url.php b/lib/less.php/Tree/Url.php
new file mode 100644
index 0000000..ef9c3c6
--- /dev/null
+++ b/lib/less.php/Tree/Url.php
@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Url
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Url extends Less_Tree{
+
+ public $attrs;
+ public $value;
+ public $currentFileInfo;
+ public $isEvald;
+ public $type = 'Url';
+
+ public function __construct($value, $currentFileInfo = null, $isEvald = null){
+ $this->value = $value;
+ $this->currentFileInfo = $currentFileInfo;
+ $this->isEvald = $isEvald;
+ }
+
+ public function accept( $visitor ){
+ $this->value = $visitor->visitObj($this->value);
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+ $output->add( 'url(' );
+ $this->value->genCSS( $output );
+ $output->add( ')' );
+ }
+
+ /**
+ * @param Less_Functions $ctx
+ */
+ public function compile($ctx){
+ $val = $this->value->compile($ctx);
+
+ if( !$this->isEvald ){
+ // Add the base path if the URL is relative
+ if( Less_Parser::$options['relativeUrls']
+ && $this->currentFileInfo
+ && is_string($val->value)
+ && Less_Environment::isPathRelative($val->value)
+ ){
+ $rootpath = $this->currentFileInfo['uri_root'];
+ if ( !$val->quote ){
+ $rootpath = preg_replace('/[\(\)\'"\s]/', '\\$1', $rootpath );
+ }
+ $val->value = $rootpath . $val->value;
+ }
+
+ $val->value = Less_Environment::normalizePath( $val->value);
+ }
+
+ // Add cache buster if enabled
+ if( Less_Parser::$options['urlArgs'] ){
+ if( !preg_match('/^\s*data:/',$val->value) ){
+ $delimiter = strpos($val->value,'?') === false ? '?' : '&';
+ $urlArgs = $delimiter . Less_Parser::$options['urlArgs'];
+ $hash_pos = strpos($val->value,'#');
+ if( $hash_pos !== false ){
+ $val->value = substr_replace($val->value,$urlArgs, $hash_pos, 0);
+ } else {
+ $val->value .= $urlArgs;
+ }
+ }
+ }
+
+ return new Less_Tree_URL($val, $this->currentFileInfo, true);
+ }
+
+}
diff --git a/lib/less.php/Tree/Value.php b/lib/less.php/Tree/Value.php
new file mode 100644
index 0000000..9f077bc
--- /dev/null
+++ b/lib/less.php/Tree/Value.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * Value
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Value extends Less_Tree{
+
+ public $type = 'Value';
+ public $value;
+
+ public function __construct($value){
+ $this->value = $value;
+ }
+
+ public function accept($visitor) {
+ $this->value = $visitor->visitArray($this->value);
+ }
+
+ public function compile($env){
+
+ $ret = array();
+ $i = 0;
+ foreach($this->value as $i => $v){
+ $ret[] = $v->compile($env);
+ }
+ if( $i > 0 ){
+ return new Less_Tree_Value($ret);
+ }
+ return $ret[0];
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ function genCSS( $output ){
+ $len = count($this->value);
+ for($i = 0; $i < $len; $i++ ){
+ $this->value[$i]->genCSS( $output );
+ if( $i+1 < $len ){
+ $output->add( Less_Environment::$_outputMap[','] );
+ }
+ }
+ }
+
+}
diff --git a/lib/less.php/Tree/Variable.php b/lib/less.php/Tree/Variable.php
new file mode 100644
index 0000000..cc0182c
--- /dev/null
+++ b/lib/less.php/Tree/Variable.php
@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * Variable
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Variable extends Less_Tree{
+
+ public $name;
+ public $index;
+ public $currentFileInfo;
+ public $evaluating = false;
+ public $type = 'Variable';
+
+ /**
+ * @param string $name
+ */
+ public function __construct($name, $index = null, $currentFileInfo = null) {
+ $this->name = $name;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function compile($env) {
+
+ if( $this->name[1] === '@' ){
+ $v = new Less_Tree_Variable(substr($this->name, 1), $this->index + 1, $this->currentFileInfo);
+ $name = '@' . $v->compile($env)->value;
+ }else{
+ $name = $this->name;
+ }
+
+ if ($this->evaluating) {
+ throw new Less_Exception_Compiler("Recursive variable definition for " . $name, null, $this->index, $this->currentFileInfo);
+ }
+
+ $this->evaluating = true;
+
+ foreach($env->frames as $frame){
+ if( $v = $frame->variable($name) ){
+ $r = $v->value->compile($env);
+ $this->evaluating = false;
+ return $r;
+ }
+ }
+
+ throw new Less_Exception_Compiler("variable " . $name . " is undefined in file ".$this->currentFileInfo["filename"], null, $this->index, $this->currentFileInfo);
+ }
+
+}