diagnostics: use debug rather than hidden terminology, and leave gaps for other severities

extractor/src/extractor.rs

@@ -281,7 +281,7 @@ impl Visitor<'_> {
             "diagnostics",
             vec![
                 Arg::Label(id),
-                Arg::Int(3), // severity 3 = error
+                Arg::Int(40), // severity 40 = error
                 Arg::String("parse_error".to_string()),
                 Arg::String(error_message),
                 Arg::String(full_error_message),

generator/src/main.rs

@@ -645,10 +645,10 @@ fn create_diagnostics<'a>() -> (dbscheme::Case<'a>, dbscheme::Table<'a>) {
         ],
     };
     let severities: Vec<(usize, &str)> = vec![
-        (0, "diagnostic_hidden"),
-        (1, "diagnostic_info"),
-        (2, "diagnostic_warning"),
-        (3, "diagnostic_error"),
+        (10, "diagnostic_debug"),
+        (20, "diagnostic_info"),
+        (30, "diagnostic_warning"),
+        (40, "diagnostic_error"),
     ];
     let case = dbscheme::Case {
         name: "diagnostic",

ql/src/codeql_ruby/Diagnostics.qll

@@ -17,13 +17,13 @@ class Diagnostic extends @diagnostic {
 
   /** Gets a string representation of the severity of this diagnostic. */
   string getSeverityText() {
-    severity = 0 and result = "Hidden"
+    severity = 10 and result = "Debug"
     or
-    severity = 1 and result = "Info"
+    severity = 20 and result = "Info"
     or
-    severity = 2 and result = "Warning"
+    severity = 30 and result = "Warning"
     or
-    severity = 3 and result = "Error"
+    severity = 40 and result = "Error"
   }
 
   /** Gets the error code associated with this diagnostic, e.g. parse_error. */

ql/src/ruby.dbscheme

@@ -1247,10 +1247,10 @@ diagnostics(
 );
 
 case @diagnostic.severity of
-  0 = @diagnostic_hidden
-| 1 = @diagnostic_info
-| 2 = @diagnostic_warning
-| 3 = @diagnostic_error
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
 ;