Packaging: Java refactoring

Split java pack into `codeql/java-all` and `codeql/java-queries`.

java/ql/lib/semmle/code/java/GeneratedFiles.qll

@@ -0,0 +1,62 @@
+/**
+ * Provides classes and predicates for working with the most common types of generated files.
+ */
+
+import Type
+private import semmle.code.java.frameworks.JavaxAnnotations
+
+/** A Java class that is detected as having been generated. */
+abstract class GeneratedClass extends Class { }
+
+/**
+ * A Java class annotated with a `@Generated` annotation.
+ */
+class AnnotatedGeneratedClass extends GeneratedClass {
+  AnnotatedGeneratedClass() { this.getAnAnnotation() instanceof GeneratedAnnotation }
+}
+
+/** A Java class generated by an ANTLR scanner or parser class. */
+class AntlrGenerated extends GeneratedClass {
+  AntlrGenerated() {
+    exists(RefType t | this.getASupertype+() = t |
+      // ANTLR v3
+      t.hasQualifiedName("org.antlr.runtime", "Lexer") or
+      t.hasQualifiedName("org.antlr.runtime", "Parser") or
+      t.hasQualifiedName("org.antlr.runtime.tree", "TreeParser") or
+      // ANTLR v2
+      t.hasQualifiedName("antlr", "TreeParser") or
+      t.hasQualifiedName("antlr", "CharScanner") or
+      t.hasQualifiedName("antlr", "LLkParser")
+    )
+  }
+}
+
+/** A generated callable is a callable declared in a generated class. */
+class GeneratedCallable extends Callable {
+  GeneratedCallable() { this.getDeclaringType() instanceof GeneratedClass }
+}
+
+/**
+ * A file that is detected as having been generated.
+ */
+abstract class GeneratedFile extends File { }
+
+/**
+ * A file detected as generated based on commonly-used marker comments.
+ */
+library class MarkerCommentGeneratedFile extends GeneratedFile {
+  MarkerCommentGeneratedFile() {
+    exists(JavadocElement t | t.getFile() = this |
+      exists(string msg | msg = t.getText() |
+        msg.regexpMatch("(?i).*\\bGenerated By\\b.*\\bDo not edit\\b.*") or
+        msg.regexpMatch("(?i).*\\bThis (file|class|interface|art[ei]fact) (was|is|(has been)) (?:auto[ -]?)?gener(e?)ated.*") or
+        msg.regexpMatch("(?i).*\\bAny modifications to this file will be lost\\b.*") or
+        msg.regexpMatch("(?i).*\\bThis (file|class|interface|art[ei]fact) (was|is) (?:mechanically|automatically) generated\\b.*") or
+        msg.regexpMatch("(?i).*\\bThe following code was (?:auto[ -]?)?generated (?:by|from)\\b.*") or
+        msg.regexpMatch("(?i).*\\bAutogenerated by Thrift.*") or
+        msg.regexpMatch("(?i).*\\bGenerated By.*JavaCC.*") or
+        msg.regexpMatch("(?i).*\\bGenerated from .* by ANTLR.*")
+      )
+    )
+  }
+}