1 files changed, 132 insertions, 0 deletions
diff --git a/vendor/scssphp/source-span/src/SourceSpanMixin.php b/vendor/scssphp/source-span/src/SourceSpanMixin.php
new file mode 100644
index 000000000..b9bbdb01b
--- /dev/null
+++ b/vendor/scssphp/source-span/src/SourceSpanMixin.php
@@ -0,0 +1,132 @@
+<?php
+
+namespace SourceSpan;
+
+use League\Uri\Contracts\UriInterface;
+use SourceSpan\Highlighter\Highlighter;
+
+/**
+ * A mixin for easily implementing {@see SourceSpan}.
+ *
+ * This implements the {@see SourceSpan} methods in terms of {@see getStart}, {@see getEnd}, and
+ * {@see getText}. This assumes that {@see getStart} and {@see getEnd} have the same source URL, that
+ * {@see getStart} comes before {@see getEnd}, and that {@see getText} has a number of characters equal
+ * to the distance between {@see getStart} and {@see getEnd}.
+ *
+ * @internal
+ */
+abstract class SourceSpanMixin implements SourceSpan
+{
+    public function getSourceUrl(): ?UriInterface
+    {
+        return $this->getStart()->getSourceUrl();
+    }
+
+    public function getLength(): int
+    {
+        return $this->getEnd()->getOffset() - $this->getStart()->getOffset();
+    }
+
+    public function union(SourceSpan $other): SourceSpan
+    {
+        if (!Util::isSameUrl($this->getSourceUrl(), $other->getSourceUrl())) {
+            throw new \InvalidArgumentException("Source URLs \"{$this->getSourceUrl()}\" and \"{$other->getSourceUrl()}\" don't match.");
+        }
+
+        if ($this->getStart()->compareTo($other->getStart()) > 0) {
+            $start = $other->getStart();
+            $beginSpan = $other;
+        } else {
+            $start = $this->getStart();
+            $beginSpan = $this;
+        }
+        if ($this->getEnd()->compareTo($other->getEnd()) > 0) {
+            $end = $this->getEnd();
+            $endSpan = $this;
+        } else {
+            $end = $other->getEnd();
+            $endSpan = $other;
+        }
+
+        if ($beginSpan->getEnd()->compareTo($endSpan->getStart()) < 0) {
+            throw new \InvalidArgumentException("Spans are disjoint.");
+        }
+
+        $text = $beginSpan->getText() . substr($endSpan->getText(), $beginSpan->getEnd()->distance($endSpan->getStart()));
+
+        return new SimpleSourceSpan($start, $end, $text);
+    }
+
+    public function compareTo(SourceSpan $other): int
+    {
+        $result = $this->getStart()->compareTo($other->getStart());
+
+        if ($result !== 0) {
+            return $result;
+        }
+
+        return $this->getEnd()->compareTo($other->getEnd());
+    }
+
+    public function message(string $message): string
+    {
+        $startLine = $this->getStart()->getLine() + 1;
+        $startColumn = $this->getStart()->getColumn() + 1;
+        $sourceUrl = $this->getSourceUrl();
+
+        $buffer = "line $startLine, column $startColumn";
+
+        if ($sourceUrl !== null) {
+            $prettyUri = Util::prettyUri($sourceUrl);
+            $buffer .= " of $prettyUri";
+        }
+
+        $buffer .= ": $message";
+
+        $highlight = $this->highlight();
+        if ($highlight !== '') {
+            $buffer .= "\n";
+            $buffer .= $highlight;
+        }
+
+        return $buffer;
+    }
+
+    public function messageMultiple(string $message, string $label, array $secondarySpans): string
+    {
+        $startLine = $this->getStart()->getLine() + 1;
+        $startColumn = $this->getStart()->getColumn() + 1;
+        $sourceUrl = $this->getSourceUrl();
+
+        $buffer = "line $startLine, column $startColumn";
+
+        if ($sourceUrl !== null) {
+            $prettyUri = Util::prettyUri($sourceUrl);
+            $buffer .= " of $prettyUri";
+        }
+
+        $buffer .= ": $message";
+
+        $highlight = $this->highlightMultiple($label, $secondarySpans);
+        if ($highlight !== '') {
+            $buffer .= "\n";
+            $buffer .= $highlight;
+        }
+
+        return $buffer;
+    }
+
+    public function highlight(): string
+    {
+        if (!$this instanceof SourceSpanWithContext && $this->getLength() === 0) {
+            return '';
+        }
+
+        return Highlighter::create($this)->highlight();
+    }
+
+    public function highlightMultiple(string $label, array $secondarySpans): string
+    {
+        return Highlighter::multiple($this, $label, $secondarySpans)->highlight();
+    }
+}