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<?php
/* Icinga Web 2 | (c) 2022 Icinga GmbH | GPLv2+ */
namespace Icinga\Less;
use Less_Tree_Call;
use Less_Tree_Color;
use Less_Tree_Value;
use Less_Tree_Variable;
class Call extends Less_Tree_Call
{
public static function fromCall(Less_Tree_Call $call)
{
return new static($call->name, $call->args, $call->index, $call->currentFileInfo);
}
public function compile($env = null)
{
if (! $env) {
// Not sure how to trigger this, but if there is no $env, there is nothing we can do
return parent::compile($env);
}
foreach ($this->args as $arg) {
if (! is_array($arg->value)) {
continue;
}
$name = null;
if ($arg->value[0] instanceof Less_Tree_Variable) {
// This is the case when defining a variable with a callable LESS rules such as fade, fadeout..
// Example: `@foo: #fff; @foo-bar: fade(@foo, 10);`
$name = $arg->value[0]->name;
} elseif ($arg->value[0] instanceof ColorPropOrVariable) {
// This is the case when defining a CSS rule using the LESS functions and passing
// a variable as an argument to them. Example: `... { color: fade(@foo, 10%); }`
$name = $arg->value[0]->getVariable()->name;
}
if ($name) {
foreach ($env->frames as $frame) {
if (($v = $frame->variable($name))) {
// Variables from the frame stack are always of type LESS Tree Rule
$vr = $v->value;
if ($vr instanceof Less_Tree_Value) {
// Get the actual color prop, otherwise this may cause an invalid argument error
$vr = $vr->compile($env);
}
if ($vr instanceof DeferredColorProp) {
if (! $vr->hasReference()) {
// Should never happen, though just for safety's sake
$vr->compile($env);
}
// Get the uppermost variable of the variable references
while (! $vr instanceof ColorProp) {
$vr = $vr->getRef();
}
} elseif ($vr instanceof Less_Tree_Color) {
$vr = ColorProp::fromColor($vr);
$vr->setName($name);
}
$arg->value[0] = $vr;
break;
}
}
}
}
return parent::compile($env);
}
}
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