Ruby: add upgrade and downgrade scripts

Author: aibaars

ruby/downgrades/1199e154f5e9b3560297633c6ebb4dfe0b191ae4/old.dbscheme

@@ -0,0 +1,14 @@
+class RubyBlockParameters extends @ruby_block_parameters {
+  string toString() { none() }
+}
+
+class RubyBlockParameter extends @ruby_block_parameters_child_type {
+  string toString() { none() }
+}
+
+from RubyBlockParameters ruby_block_parameters, int index, RubyBlockParameter param
+where
+  ruby_block_parameters_child(ruby_block_parameters, index, param) or
+  ruby_block_parameters_locals(ruby_block_parameters,
+    index - 1 - max(int i | ruby_block_parameters_child(ruby_block_parameters, i, _)), param)
+select ruby_block_parameters, index, param

ruby/downgrades/1199e154f5e9b3560297633c6ebb4dfe0b191ae4/ruby.dbscheme

@@ -0,0 +1,14 @@
+class RubyAstNode extends @ruby_ast_node {
+  string toString() { none() }
+}
+
+class RubyCall extends RubyAstNode, @ruby_call { }
+
+from RubyCall ruby_call, RubyAstNode method
+where
+  ruby_call_method(ruby_call, method)
+  or
+  ruby_call_def(ruby_call) and
+  not ruby_call_method(ruby_call, _) and
+  ruby_call_arguments(ruby_call, method)
+select ruby_call, method

ruby/downgrades/1199e154f5e9b3560297633c6ebb4dfe0b191ae4/ruby_block_parameters_child.ql

@@ -0,0 +1,7 @@
+private class RubyAstNode extends @ruby_ast_node {
+  string toString() { none() }
+}
+
+from RubyAstNode node, RubyAstNode child
+where ruby_rational_def(node, child) and not ruby_complex_def(_, node)
+select node, child

ruby/downgrades/1199e154f5e9b3560297633c6ebb4dfe0b191ae4/ruby_call_def.ql

@@ -0,0 +1,37 @@
+private class RubyAstNode extends @ruby_ast_node {
+  string toString() { none() }
+}
+
+bindingset[old]
+private int newKind(int old) {
+  old <= 3 and result = old
+  or
+  old >= 4 and result = old + 1
+}
+
+private predicate complex_token(RubyAstNode node, string value) {
+  exists(RubyAstNode token, string tokenValue | ruby_tokeninfo(token, _, tokenValue) |
+    (
+      ruby_complex_def(node, token) and value = tokenValue + "i"
+      or
+      exists(@ruby_rational rational |
+        ruby_complex_def(node, rational) and
+        ruby_rational_def(rational, token)
+      ) and
+      value = tokenValue + "ri"
+    )
+  )
+}
+
+private RubyAstNode parent(RubyAstNode node) { ruby_ast_node_info(node, result, _, _) }
+
+from RubyAstNode token, int kind, string value
+where
+  exists(int oldKind |
+    ruby_tokeninfo(token, oldKind, value) and
+    not complex_token(parent+(token), _) and
+    kind = newKind(oldKind)
+  )
+  or
+  complex_token(token, value) and kind = 4
+select token, kind, value

ruby/downgrades/1199e154f5e9b3560297633c6ebb4dfe0b191ae4/ruby_rational_def.ql

@@ -0,0 +1,12 @@
+description: tree-sitter-ruby update
+compatibility: backwards
+ruby_tokeninfo.rel:              run ruby_tokeninfo.qlo
+ruby_block_parameters_child.rel: run ruby_block_parameters_child.qlo
+ruby_call_def.rel:               run ruby_call_def.qlo
+ruby_rational_def.rel:           run ruby_rational_def.qlo
+
+
+ruby_call_method.rel: delete
+ruby_complex_def.rel: delete
+ruby_block_parameters_locals.rel: delete
+ruby_call_operator: delete