From 134d3ac4caff6d87c79b0892e57073594cb0064c Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Fri, 9 Oct 2026 14:43:11 +0200
Subject: Remove Pointer and nil support

---
 include/elna/boot/ast.h             | 11 +----------
 include/elna/boot/evaluator.h       |  2 +-
 include/elna/boot/materialization.h |  6 +-----
 include/elna/boot/name_analysis.h   |  1 -
 include/elna/boot/result.h          | 16 +++++++++++++++-
 include/elna/boot/type_check.h      |  8 --------
 include/elna/gcc/elna-generic.h     |  1 -
 7 files changed, 18 insertions(+), 27 deletions(-)

(limited to 'include')

diff --git a/include/elna/boot/ast.h b/include/elna/boot/ast.h
index e7a77ac..8f8da13 100644
--- a/include/elna/boot/ast.h
+++ b/include/elna/boot/ast.h
@@ -98,16 +98,10 @@ namespace elna::boot
         static constexpr int value = 4;
     };
 
-    template<>
-    struct literal_type_id<std::nullptr_t>
-    {
-        static constexpr int value = 5;
-    };
-
     template<>
     struct literal_type_id<std::string>
     {
-        static constexpr int value = 6;
+        static constexpr int value = 5;
     };
 
     template<typename T>
@@ -219,7 +213,6 @@ namespace elna::boot
         virtual void visit(literal<float_literal> *) = 0;
         virtual void visit(literal<bool> *) = 0;
         virtual void visit(literal<std::uint32_t> *) = 0;
-        virtual void visit(literal<std::nullptr_t> *) = 0;
         virtual void visit(literal<std::string> *) = 0;
     };
 
@@ -271,7 +264,6 @@ namespace elna::boot
         [[noreturn]] void visit(literal<float_literal> *) override;
         [[noreturn]] void visit(literal<bool> *) override;
         [[noreturn]] void visit(literal<std::uint32_t> *) override;
-        [[noreturn]] void visit(literal<std::nullptr_t> *) override;
         [[noreturn]] void visit(literal<std::string> *) override;
     };
 
@@ -321,7 +313,6 @@ namespace elna::boot
         void visit(literal<float_literal> *) override;
         void visit(literal<bool> *) override;
         void visit(literal<std::uint32_t> *) override;
-        void visit(literal<std::nullptr_t> *) override;
         void visit(literal<std::string> *) override;
     };
 
diff --git a/include/elna/boot/evaluator.h b/include/elna/boot/evaluator.h
index 6dc204f..72e1f21 100644
--- a/include/elna/boot/evaluator.h
+++ b/include/elna/boot/evaluator.h
@@ -97,7 +97,7 @@ namespace elna::boot
         static std::optional<constant_value> cast_to_char(const constant_value& source_expression);
         static std::optional<constant_value> cast_to_enumeration(const constant_value& source_expression,
                 const enumeration_type& enumeration, std::size_t target_size);
-        static std::optional<constant_value> cast_to_pointer(const constant_value& source_expression);
+        std::optional<constant_value> cast_to_pointer(const constant_value& source_expression) const;
 
     public:
         std::optional<std::size_t> evaluate_index(expression& subject);
diff --git a/include/elna/boot/materialization.h b/include/elna/boot/materialization.h
index c4abb11..74b4133 100644
--- a/include/elna/boot/materialization.h
+++ b/include/elna/boot/materialization.h
@@ -30,9 +30,7 @@ namespace elna::boot
             real_overflow,
             local_export,
             local_extern,
-            field_export,
-            variable_generic,
-            field_generic
+            variable_generic
         };
 
         materialization_error(const source_position position, kind error_kind);
@@ -55,8 +53,6 @@ namespace elna::boot
         void visit(procedure_declaration *declaration) override;
         void visit(variable_declaration *declaration) override;
 
-        void visit(record_type_expression *expression) override;
-
         void visit(literal<integer_literal> *literal) override;
         void visit(literal<float_literal> *literal) override;
     };
diff --git a/include/elna/boot/name_analysis.h b/include/elna/boot/name_analysis.h
index 16734cd..62b91b4 100644
--- a/include/elna/boot/name_analysis.h
+++ b/include/elna/boot/name_analysis.h
@@ -399,7 +399,6 @@ namespace elna::boot
         void visit(literal<float_literal> *literal) override;
         void visit(literal<bool> *literal) override;
         void visit(literal<std::uint32_t> *literal) override;
-        void visit(literal<std::nullptr_t> *literal) override;
         void visit(literal<std::string> *literal) override;
     };
 
diff --git a/include/elna/boot/result.h b/include/elna/boot/result.h
index 540307c..2239413 100644
--- a/include/elna/boot/result.h
+++ b/include/elna/boot/result.h
@@ -865,6 +865,14 @@ namespace elna::boot
     template<template<typename, typename> typename C, template<typename> typename Alloc = std::allocator>
     class constant_aggregate;
 
+    struct pointer_literal
+    {
+        integer_literal address;
+
+        bool operator==(const pointer_literal& that) const = default;
+        auto operator<=>(const pointer_literal& that) const = default;
+    };
+
     /**
      * Typed constant value produced by the constant expression evaluator.
      *
@@ -876,7 +884,7 @@ namespace elna::boot
         float_literal,
         bool,
         std::uint32_t,
-        std::nullptr_t,
+        pointer_literal,
         std::string,
         constant_aggregate<ordered_map>,
         constant_aggregate<std::vector>
@@ -1013,6 +1021,12 @@ struct std::hash<elna::boot::constant_aggregate<elna::boot::ordered_map>>
     std::size_t operator()(const elna::boot::constant_aggregate<elna::boot::ordered_map>& key) const noexcept;
 };
 
+template<>
+struct std::hash<elna::boot::pointer_literal>
+{
+    std::size_t operator()(const elna::boot::pointer_literal& key) const noexcept;
+};
+
 template<>
 struct std::hash<elna::boot::integer_literal>
 {
diff --git a/include/elna/boot/type_check.h b/include/elna/boot/type_check.h
index d9a07b9..98db843 100644
--- a/include/elna/boot/type_check.h
+++ b/include/elna/boot/type_check.h
@@ -248,15 +248,7 @@ namespace elna::boot
         };
         context ctx;
 
-        /**
-         * Checks whether derived has base in its record parent chain.
-         *
-         * Base record type must not be null. Derived record type may be null.
-         */
-        verdict guard_const_laundering() const;
-
         verdict check_exact_match() const;
-        verdict check_pointer_hatch() const;
         verdict check_pointer_conversion() const;
         verdict check_slice_conversion() const;
         verdict check_array_conversion() const;
diff --git a/include/elna/gcc/elna-generic.h b/include/elna/gcc/elna-generic.h
index 54f320e..f942f81 100644
--- a/include/elna/gcc/elna-generic.h
+++ b/include/elna/gcc/elna-generic.h
@@ -89,7 +89,6 @@ namespace elna::gcc
         void visit(boot::literal<boot::float_literal> *literal) override;
         void visit(boot::literal<bool> *boolean) override;
         void visit(boot::literal<std::uint32_t> *character) override;
-        void visit(boot::literal<std::nullptr_t> *) override;
         void visit(boot::literal<std::string> *string) override;
         void visit(boot::traits_expression *trait) override;
         void visit(boot::binary_expression *expression) override;
-- 
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