added consts, fixed a initialization to pass clang-tidy

# Conflicts:
#	source/reflect.h

Author: farmerpiki

.clang-tidy

@@ -1 +1 @@
-Checks: 'misc-*, -misc-definitions-in-headers, -misc-non-private-member-variables-in-classes, -misc-no-recursion'
+Checks: 'misc-*, -misc-definitions-in-headers, -misc-non-private-member-variables-in-classes, -misc-no-recursion, -misc-include-cleaner, -misc-use-anonymous-namespace'

include/cpp2util.h

@@ -1859,12 +1859,12 @@ inline constexpr auto is_narrowing_v =
     // [dcl.init.list] 7.1
     (std::is_floating_point_v<From> && std::is_integral_v<To>) ||
     // [dcl.init.list] 7.2
-    (std::is_floating_point_v<From> && std::is_floating_point_v<To> && sizeof(From) > sizeof(To)) ||
+    (std::is_floating_point_v<From> && std::is_floating_point_v<To> && sizeof(From) > sizeof(To)) || // NOLINT(misc-redundant-expression)
     // [dcl.init.list] 7.3
     (std::is_integral_v<From> && std::is_floating_point_v<To>) ||
     (std::is_enum_v<From> && std::is_floating_point_v<To>) ||
     // [dcl.init.list] 7.4
-    (std::is_integral_v<From> && std::is_integral_v<To> && sizeof(From) > sizeof(To)) ||
+    (std::is_integral_v<From> && std::is_integral_v<To> && sizeof(From) > sizeof(To)) || // NOLINT(misc-redundant-expression)
     (std::is_enum_v<From> && std::is_integral_v<To> && sizeof(From) > sizeof(To)) ||
     // [dcl.init.list] 7.5
     (std::is_pointer_v<From> && std::is_same_v<To, bool>)

source/common.h

@@ -880,8 +880,8 @@ class cmdline_processor
         -> void
     {
         help_requested = true;
-        std::string_view a = __DATE__;
-        std::string_view b = __TIME__;
+        const std::string_view a = __DATE__;
+        const std::string_view b = __TIME__;
         std::unordered_map<std::string_view, char> m = { {"Jan",'1'}, {"Feb",'2'}, {"Mar",'3'}, {"Apr",'4'}, {"May",'5'}, {"Jun",'6'}, {"Jul",'7'}, {"Aug",'8'}, {"Sep",'9'}, {"Oct",'A'}, {"Nov",'B'}, {"Dec",'C'} };
 
         auto stamp = std::to_string(atoi(&a[9])-15);

source/parse.h

@@ -6105,7 +6105,7 @@ class parser
             //  Remember current position, because we may need to backtrack
             auto start_pos = pos;
 
-            bool inside_initializer = (
+            const bool inside_initializer = (
                 peek(-1) && peek(-1)->type() == lexeme::Assignment
             );
             auto open_paren = &curr();
@@ -8069,7 +8069,7 @@ class parser
     )
         -> std::unique_ptr<compound_statement_node>
     {
-        bool is_braced = curr().type() == lexeme::LeftBrace;
+        const bool is_braced = curr().type() == lexeme::LeftBrace;
         if (
             !is_braced
             && !allow_single_unbraced_statement

source/sema.h

@@ -1295,7 +1295,7 @@ class sema
                             assert (std::ssize(selection_stack.back().branches) > 0);
                             selection_stack.back().branches.back().result = sym.standalone_assignment_to;
 
-                            int this_depth = symbols[pos].depth;
+                            const int this_depth = symbols[pos].depth;
                             while (symbols[pos + 1].depth >= this_depth) {
                                 ++pos;
                             }
@@ -1320,7 +1320,7 @@ class sema
 
                         //  The depth of this branch should always be the depth of
                         //  the current selection statement + 1
-                        int branch_depth = symbols[selection_stack.back().pos].depth + 1;
+                        const int branch_depth = symbols[selection_stack.back().pos].depth + 1;
                         while (symbols[pos + 1].depth > branch_depth) {
                             ++pos;
                         }

source/to_cpp1.h

@@ -1739,7 +1739,7 @@ class cppfront
 
         //  We always want to std::move from named return values,
         //  regardless of their types, so use std::move for that
-        bool add_std_move =
+        const bool add_std_move =
             synthesized_multi_return_size > 1
             || (
                 synthesized_multi_return_size == 1
@@ -1763,7 +1763,7 @@ class cppfront
 
         //  Add `cpp2::move(*this).` when implicitly moving a member on last use
         //  This way, members of lvalue reference type won't be implicitly moved
-        bool add_this =
+        const bool add_this =
             add_move
             && decl
             && decl->identifier