Fix fatal error for Oracle LOOP statement

src/SqlFormatter.php

@@ -285,6 +285,14 @@ public function format(string $string, string $indentString = '  '): string
             } elseif (strtoupper($token->value()) === 'BEGIN') {
                 $newline             = true;
                 $increaseBlockIndent = true;
+            } elseif (strtoupper($token->value()) === 'LOOP') {
+                // https://docs.oracle.com/en/database/oracle/oracle-database/19/lnpls/basic-LOOP-statement.html
+
+                $prevNotWhitespaceToken = $cursor->subCursor()->previous(Token::TOKEN_TYPE_WHITESPACE);
+                if ($prevNotWhitespaceToken !== null && strtoupper($prevNotWhitespaceToken->value()) !== 'END') {
+                    $newline             = true;
+                    $increaseBlockIndent = true;
+                }
             } elseif (in_array(strtoupper($token->value()), ['WHEN', 'THEN', 'ELSE', 'END'], true)) {
                 if (strtoupper($token->value()) !== 'THEN') {
                     array_shift($indentTypes);

tests/clihighlight.txt

@@ -1098,3 +1098,9 @@ MY_NON_TOP_LEVEL_KEYWORD_FX_3();
     throw;
   end
 end catch
+---
+BEGIN
+  FOR i IN 1..5 LOOP
+    DBMS_OUTPUT.PUT_LINE(i);
+  END LOOP;
+END;

tests/compress.txt

@@ -99,3 +99,5 @@ MY_NON_TOP_LEVEL_KEYWORD_FX_1(); MY_NON_TOP_LEVEL_KEYWORD_FX_2(); SELECT x FROM
 SELECT case when name = 1 then 10 when name = 2 then 20 when name = 3 then case when age > 10 then 30 else 31 end else 40 end AS case1, (SELECT case name when 1 then 10 when 2 then 20 when 3 then case age when 10 then 30 else 31 end else 40 end) case2, name FROM user
 ---
 begin try insert into [t] ([name], [int], [float], [null]) values (N'Ewa', 1, 1.0, null); end try begin catch if ERROR_NUMBER() = 544 begin set IDENTITY_INSERT [t] on; begin try insert into [t] ([name], [int], [float], [null]) values (N'Ewa', 1, 1.0, null); set IDENTITY_INSERT [t] off; end try begin catch set IDENTITY_INSERT [t] off; throw; end catch end else begin throw; end end catch
+---
+BEGIN FOR i IN 1..5 LOOP DBMS_OUTPUT.PUT_LINE(i); END LOOP; END;

tests/format-highlight.html

@@ -1098,3 +1098,9 @@
     <span style="color: #333;">throw</span><span >;</span>
   <span style="font-weight:bold;">end</span>
 <span style="font-weight:bold;">end</span> <span style="color: #333;">catch</span></pre>
+---
+<pre style="color: black; background-color: white;"><span style="font-weight:bold;">BEGIN</span>
+  <span style="font-weight:bold;">FOR</span> <span style="color: #333;">i</span> <span style="font-weight:bold;">IN</span> <span style="color: green;">1</span><span >.</span><span >.</span><span style="color: green;">5</span> <span style="color: #333;">LOOP</span>
+    <span style="color: #333;">DBMS_OUTPUT</span><span >.</span><span style="color: #333;">PUT_LINE</span>(<span style="color: #333;">i</span>)<span >;</span>
+  <span style="font-weight:bold;">END</span> <span style="color: #333;">LOOP</span><span >;</span>
+<span style="font-weight:bold;">END</span><span >;</span></pre>

tests/format.txt

@@ -1096,3 +1096,9 @@ else
     throw;
   end
 end catch
+---
+BEGIN
+  FOR i IN 1..5 LOOP
+    DBMS_OUTPUT.PUT_LINE(i);
+  END LOOP;
+END;

tests/highlight.html

@@ -380,3 +380,10 @@
       <span style="color: #333;">throw</span><span >;</span>
     <span style="font-weight:bold;">end</span>
 <span style="font-weight:bold;">end</span> <span style="color: #333;">catch</span></pre>
+---
+<pre style="color: black; background-color: white;"><span style="font-weight:bold;">BEGIN</span>
+  <span style="font-weight:bold;">FOR</span> <span style="color: #333;">i</span> <span style="font-weight:bold;">IN</span> <span style="color: green;">1</span><span >.</span><span >.</span><span style="color: green;">5</span>
+  <span style="color: #333;">LOOP</span>
+    <span style="color: #333;">DBMS_OUTPUT</span><span >.</span><span style="color: #333;">PUT_LINE</span>(<span style="color: #333;">i</span>)<span >;</span>
+  <span style="font-weight:bold;">END</span> <span style="color: #333;">LOOP</span><span >;</span>
+<span style="font-weight:bold;">END</span><span >;</span></pre>

tests/sql.sql

@@ -380,3 +380,10 @@ begin catch
       throw;
     end
 end catch
+---
+BEGIN
+  FOR i IN 1..5
+  LOOP
+    DBMS_OUTPUT.PUT_LINE(i);
+  END LOOP;
+END;