update less.php to PHP 7.x compatible fork

1 files changed, 72 insertions, 0 deletions

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;
+    }
+
+}