From 6b131c925dee7a5f97516edd581e051e08bb52d8 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Mon, 20 Jul 2026 16:09:24 +0200
Subject: Implement min and max for booleans and floats

---
 boot/evaluator.cc               | 16 ++++++++++++++++
 boot/name_analysis.cc           |  5 +++--
 gcc/gcc/elna-generic.cc         | 31 ++++++-------------------------
 include/elna/boot/evaluator.h   |  2 +-
 include/elna/gcc/elna-generic.h |  5 +++++
 5 files changed, 31 insertions(+), 28 deletions(-)

diff --git a/boot/evaluator.cc b/boot/evaluator.cc
index b7edd3a..7eb612b 100644
--- a/boot/evaluator.cc
+++ b/boot/evaluator.cc
@@ -534,6 +534,14 @@ namespace elna::boot
             {
                 return constant_value{ static_cast<unsigned char>(0) };
             }
+            if (is_primitive_type(resolved, "Bool"))
+            {
+                return constant_value{ false };
+            }
+            if (is_primitive_type(resolved, "Float"))
+            {
+                return constant_value{ -std::numeric_limits<double>::max() };
+            }
             if (auto enumeration = resolved.get<enumeration_type>())
             {
                 return constant_value{ 1 };
@@ -555,6 +563,14 @@ namespace elna::boot
             {
                 return constant_value{ std::numeric_limits<unsigned char>::max() };
             }
+            if (is_primitive_type(resolved, "Bool"))
+            {
+                return constant_value{ true };
+            }
+            if (is_primitive_type(resolved, "Float"))
+            {
+                return constant_value{ std::numeric_limits<double>::max() };
+            }
             if (auto enumeration = resolved.get<enumeration_type>())
             {
                 return constant_value{ static_cast<std::int32_t>(enumeration->members.size()) };
diff --git a/boot/name_analysis.cc b/boot/name_analysis.cc
index 22b7814..54a2d1a 100644
--- a/boot/name_analysis.cc
+++ b/boot/name_analysis.cc
@@ -539,9 +539,10 @@ for (const auto& member : expression->members)
             if (!trait->type_decoration.empty())
             {
                 type const resolved = resolve_underlying_type(trait->type_decoration);
-                bool const is_enum = resolved.get<enumeration_type>() != nullptr;
 
-                if (!is_enum && !is_discrete_type(resolved))
+                if (resolved.get<enumeration_type>() == nullptr
+                        && !is_primitive_type(resolved, "Float")
+                        && !is_discrete_type(resolved))
                 {
                     add_error<unsupported_trait_type_error>(trait->name,
                             trait->type_decoration);
diff --git a/gcc/gcc/elna-generic.cc b/gcc/gcc/elna-generic.cc
index 79207cc..8561ac4 100644
--- a/gcc/gcc/elna-generic.cc
+++ b/gcc/gcc/elna-generic.cc
@@ -39,6 +39,8 @@ namespace elna::gcc
     generic_visitor::generic_visitor(std::shared_ptr<symbol_table> symbol_table,
             boot::symbol_bag bag, const boot::target_info& target)
         : bag(bag), symbols(symbol_table), target(target)
+        , const_evaluator(std::make_unique<boot::evaluator>(this->bag, this->target,
+                this->evaluated_initializers))
     {
     }
 
@@ -862,34 +864,13 @@ namespace elna::gcc
     {
         location_t trait_location = get_location(&trait->position());
 
-        if (trait->name == "size")
+        if (trait->name == "size" || trait->name == "alignment"
+                || trait->name == "min" || trait->name == "max")
         {
             if (expect_trait_type_only(trait))
             {
-                this->current_expression = fold_convert_loc(trait_location, elna_word_type_node,
-                        size_in_bytes(this->current_expression));
-            }
-        }
-        else if (trait->name == "alignment")
-        {
-            if (expect_trait_type_only(trait))
-            {
-                this->current_expression = build_int_cstu(elna_word_type_node,
-                        TYPE_ALIGN_UNIT(this->current_expression));
-            }
-        }
-        else if (trait->name == "min")
-        {
-            if (expect_trait_type_only(trait))
-            {
-                this->current_expression = TYPE_MIN_VALUE(this->current_expression);
-            }
-        }
-        else if (trait->name == "max")
-        {
-            if (expect_trait_type_only(trait))
-            {
-                this->current_expression = TYPE_MAX_VALUE(this->current_expression);
+                this->current_expression = constant_to_tree(
+                        *this->const_evaluator->evaluate_traits(*trait));
             }
         }
         else if (trait->name == "offset")
diff --git a/include/elna/boot/evaluator.h b/include/elna/boot/evaluator.h
index f1a5437..08aec6b 100644
--- a/include/elna/boot/evaluator.h
+++ b/include/elna/boot/evaluator.h
@@ -80,11 +80,11 @@ namespace elna::boot
         std::optional<constant_value> evaluate_unary(unary_expression& subject);
         std::optional<constant_value> evaluate_binary(binary_expression& subject);
         std::optional<constant_value> evaluate_cast(cast_expression& subject);
-        std::optional<constant_value> evaluate_traits(traits_expression& subject);
         std::optional<std::size_t> evaluate_traits_size(const type& subject);
         std::optional<std::size_t> evaluate_traits_alignment(const type& subject);
 
     public:
+        std::optional<constant_value> evaluate_traits(traits_expression& subject);
         explicit evaluator(symbol_bag& bag, const target_info& target,
                 const std::map<std::string, expression*>& evaluated_initializers);
 
diff --git a/include/elna/gcc/elna-generic.h b/include/elna/gcc/elna-generic.h
index 9dea83b..aa4bde1 100644
--- a/include/elna/gcc/elna-generic.h
+++ b/include/elna/gcc/elna-generic.h
@@ -17,8 +17,11 @@ along with GCC; see the file COPYING3.  If not see
 
 #pragma once
 
+#include <map>
+#include <memory>
 #include <string>
 #include "elna/boot/ast.h"
+#include "elna/boot/evaluator.h"
 #include "elna/boot/symbol.h"
 #include "elna/gcc/elna-tree.h"
 
@@ -36,6 +39,8 @@ namespace elna::gcc
         elna::boot::symbol_bag bag;
         std::shared_ptr<symbol_table> symbols;
         const elna::boot::target_info& target;
+        std::map<std::string, boot::expression *> evaluated_initializers;
+        std::unique_ptr<boot::evaluator> const_evaluator;
 
         void enter_scope();
         tree leave_scope();
-- 
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