From bf7416a3ef9f0b787dcaebf816f3f3e6e385ff42 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Thu, 13 Aug 2026 22:55:06 +0200
Subject: Implement fixed-size integers

---
 boot/symbol.cc | 59 +++++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 44 insertions(+), 15 deletions(-)

(limited to 'boot/symbol.cc')

diff --git a/boot/symbol.cc b/boot/symbol.cc
index 1cc652c..9854acc 100644
--- a/boot/symbol.cc
+++ b/boot/symbol.cc
@@ -184,8 +184,8 @@ namespace elna::boot
         }, payload);
     }
 
-    alias_type::alias_type(const std::string& name)
-        : name(name) 
+    alias_type::alias_type(const std::string& name, type referent)
+        : name(name), referent(std::move(referent))
     {
     }
 
@@ -209,8 +209,8 @@ namespace elna::boot
     {
     }
 
-    primitive_type::primitive_type(const std::string& identifier)
-        : identifier(identifier)
+    primitive_type::primitive_type(const std::string& identifier, const type_properties& properties)
+        : identifier(identifier), properties(properties)
     {
     }
 
@@ -282,16 +282,42 @@ namespace elna::boot
         return std::static_pointer_cast<variable_info>(shared_from_this());
     }
 
-    std::shared_ptr<symbol_table> builtin_symbol_table()
+    static void builtin_integers(const std::shared_ptr<symbol_table>& symbols,
+            const std::array<type_properties, target_integer_count>& properties,
+            const std::string& integer_name)
+    {
+        for (std::size_t i = 1; i < properties.size(); ++i)
+        {
+            const std::size_t bit_size = properties[i].size * CHAR_BIT;
+            const std::string type_name = integer_name + std::to_string(bit_size);
+            const type variant_type = type(std::make_shared<primitive_type>(type_name, properties[i]));
+
+            symbols->enter(type_name, std::make_shared<type_info>(variant_type));
+        }
+        if (!symbols->contains(integer_name))
+        {
+            auto variant_type = type(std::make_shared<primitive_type>(integer_name, properties.front()));
+
+            symbols->enter(integer_name, std::make_shared<type_info>(variant_type));
+        }
+    }
+
+    std::shared_ptr<symbol_table> builtin_symbol_table(const target_info& target)
     {
         auto result = std::make_shared<symbol_table>();
 
-        result->enter("Int", std::make_shared<type_info>(type(std::make_shared<primitive_type>("Int"))));
-        result->enter("Word", std::make_shared<type_info>(type(std::make_shared<primitive_type>("Word"))));
-        result->enter("Char", std::make_shared<type_info>(type(std::make_shared<primitive_type>("Char"))));
-        result->enter("Pointer", std::make_shared<type_info>(type(std::make_shared<primitive_type>("Pointer"))));
-        result->enter("Float", std::make_shared<type_info>(type(std::make_shared<primitive_type>("Float"))));
-        type const boolean = type(std::make_shared<primitive_type>("Bool"));
+        builtin_integers(result, target.int_properties, "Int");
+        builtin_integers(result, target.word_properties, "Word");
+
+        result->enter("Char",
+                std::make_shared<type_info>(type(std::make_shared<primitive_type>("Char", target.char_properties))));
+
+        const type pointer = type(std::make_shared<primitive_type>("Pointer", target.pointer_properties));
+        result->enter("Pointer", std::make_shared<type_info>(pointer));
+        result->enter("Float",
+                std::make_shared<type_info>(type(std::make_shared<primitive_type>("Float", target.float_properties))));
+
+        const type boolean = type(std::make_shared<primitive_type>("Bool", target.bool_properties));
         result->enter("Bool", std::make_shared<type_info>(boolean));
 
         procedure_type assert_symbol{ procedure_type::return_t() };
@@ -426,15 +452,18 @@ namespace elna::boot
 
     bool is_numeric_type(const type& checked)
     {
-        return is_primitive_type(checked, "Int")
-            || is_primitive_type(checked, "Word")
+        return is_integral_type(checked)
             || is_primitive_type(checked, "Float");
     }
 
     bool is_integral_type(const type& checked)
     {
-        return is_primitive_type(checked, "Int")
-            || is_primitive_type(checked, "Word");
+        if (auto primitive_checked = checked.get<primitive_type>())
+        {
+            return primitive_checked->identifier.starts_with("Int")
+                || primitive_checked->identifier.starts_with("Word");
+        }
+        return false;
     }
 
     bool is_discrete_type(const type& checked)
-- 
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