Merge pull request #197 from orange-cpp/feature/compile_time_patten_parsing

Feature/compile time patten parsing

include/omath/utility/elf_pattern_scan.hpp

@@ -2,12 +2,13 @@
 // Created by Vladislav on 30.12.2025.
 //
 #pragma once
+#include "pattern_scan.hpp"
+#include "section_scan_result.hpp"
 #include <cstdint>
 #include <filesystem>
 #include <optional>
 #include <span>
 #include <string_view>
-#include "section_scan_result.hpp"
 namespace omath
 {
     class ElfPatternScanner final
@@ -18,14 +19,74 @@ namespace omath
         scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& pattern,
                                           const std::string_view& target_section_name = ".text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                          const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_loaded_module(module_base_address, target_section_name,
+                                                     &ElfPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_file(const std::filesystem::path& path_to_file, const std::string_view& pattern,
                                  const std::string_view& target_section_name = ".text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                 const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_file(path_to_file, target_section_name,
+                                            &ElfPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_memory_file(std::span<const std::byte> file_data, const std::string_view& pattern,
                                         const std::string_view& target_section_name = ".text");
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_memory_file(file_data, target_section_name,
+                                                   &ElfPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
+    private:
+        using SectionScanFunction = std::optional<std::ptrdiff_t> (*)(std::span<const std::byte>);
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::ptrdiff_t> scan_section_for_pattern(const std::span<const std::byte> section_data)
+        {
+            const auto result = PatternScanner::scan_for_pattern<Pattern>(section_data.begin(), section_data.end());
+
+            if (result == section_data.end())
+                return std::nullopt;
+
+            return result - section_data.begin();
+        }
+
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& target_section_name,
+                                          SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult> scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                                                         const std::string_view& target_section_name,
+                                                                         SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name, SectionScanFunction scan_pattern);
     };
 } // namespace omath

include/omath/utility/macho_pattern_scan.hpp

@@ -2,12 +2,13 @@
 // Created by Copilot on 04.02.2026.
 //
 #pragma once
+#include "pattern_scan.hpp"
+#include "section_scan_result.hpp"
 #include <cstdint>
 #include <filesystem>
 #include <optional>
 #include <span>
 #include <string_view>
-#include "section_scan_result.hpp"
 namespace omath
 {
     class MachOPatternScanner final
@@ -18,14 +19,74 @@ namespace omath
         scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& pattern,
                                           const std::string_view& target_section_name = "__text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                          const std::string_view& target_section_name = "__text")
+        {
+            return scan_for_pattern_in_loaded_module(module_base_address, target_section_name,
+                                                     &MachOPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_file(const std::filesystem::path& path_to_file, const std::string_view& pattern,
                                  const std::string_view& target_section_name = "__text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                 const std::string_view& target_section_name = "__text")
+        {
+            return scan_for_pattern_in_file(path_to_file, target_section_name,
+                                            &MachOPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_memory_file(std::span<const std::byte> file_data, const std::string_view& pattern,
                                         const std::string_view& target_section_name = "__text");
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name = "__text")
+        {
+            return scan_for_pattern_in_memory_file(file_data, target_section_name,
+                                                   &MachOPatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
+    private:
+        using SectionScanFunction = std::optional<std::ptrdiff_t> (*)(std::span<const std::byte>);
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::ptrdiff_t> scan_section_for_pattern(const std::span<const std::byte> section_data)
+        {
+            const auto result = PatternScanner::scan_for_pattern<Pattern>(section_data.begin(), section_data.end());
+
+            if (result == section_data.end())
+                return std::nullopt;
+
+            return result - section_data.begin();
+        }
+
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& target_section_name,
+                                          SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult> scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                                                         const std::string_view& target_section_name,
+                                                                         SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name, SectionScanFunction scan_pattern);
     };
 } // namespace omath

include/omath/utility/pattern_scan.hpp

@@ -3,9 +3,12 @@
 //
 
 #pragma once
+#include <algorithm>
+#include <array>
 #include <expected>
 #include <optional>
 #include <span>
+#include <stdexcept>
 #include <string_view>
 #include <vector>
 
@@ -15,6 +18,8 @@ class unit_test_pattern_scan_corner_case_1_Test;
 class unit_test_pattern_scan_corner_case_2_Test;
 class unit_test_pattern_scan_corner_case_3_Test;
 class unit_test_pattern_scan_corner_case_4_Test;
+class unit_test_pattern_scan_consteval_read_test_Test;
+class unit_test_pattern_scan_consteval_spacing_and_case_Test;
 // ReSharper restore CppInconsistentNaming
 namespace omath
 {
@@ -29,8 +34,21 @@ namespace omath
         friend unit_test_pattern_scan_corner_case_2_Test;
         friend unit_test_pattern_scan_corner_case_3_Test;
         friend unit_test_pattern_scan_corner_case_4_Test;
+        friend unit_test_pattern_scan_consteval_read_test_Test;
+        friend unit_test_pattern_scan_consteval_spacing_and_case_Test;
 
     public:
+        template<std::size_t N>
+        struct fixed_string final
+        {
+            char value[N]{};
+
+            constexpr fixed_string(const char (&text)[N])
+            {
+                std::ranges::copy(text, value);
+            }
+        };
+
         [[nodiscard]]
         static std::span<std::byte>::iterator scan_for_pattern(const std::span<std::byte>& range,
                                                                const std::string_view& pattern);
@@ -49,9 +67,26 @@ namespace omath
             if (!parsed_pattern) [[unlikely]]
                 return end;
 
+            return scan_for_parsed_pattern(begin, end, parsed_pattern.value());
+        }
+        template<fixed_string Pattern, class IteratorType>
+        requires std::input_or_output_iterator<std::remove_cvref_t<IteratorType>>
+        static IteratorType scan_for_pattern(const IteratorType& begin, const IteratorType& end)
+        {
+            constexpr auto parsed_pattern = parse_pattern<Pattern>();
+
+            return scan_for_parsed_pattern(begin, end, parsed_pattern);
+        }
+
+    private:
+        template<class IteratorType, class ParsedPattern>
+        requires std::input_or_output_iterator<std::remove_cvref_t<IteratorType>>
+        static IteratorType scan_for_parsed_pattern(const IteratorType& begin, const IteratorType& end,
+                                                    const ParsedPattern& parsed_pattern)
+        {
             const auto whole_range_size = static_cast<std::ptrdiff_t>(std::distance(begin, end));
 
-            const auto pattern_size = static_cast<std::ptrdiff_t>(parsed_pattern->size());
+            const auto pattern_size = static_cast<std::ptrdiff_t>(parsed_pattern.size());
             const std::ptrdiff_t scan_size = whole_range_size - pattern_size;
 
             if (scan_size < 0)
@@ -61,9 +96,9 @@ namespace omath
             {
                 bool found = true;
 
-                for (std::ptrdiff_t j = 0; j < static_cast<std::ptrdiff_t>(parsed_pattern->size()); j++)
+                for (std::ptrdiff_t j = 0; j < static_cast<std::ptrdiff_t>(parsed_pattern.size()); j++)
                 {
-                    found = parsed_pattern->at(j) == std::nullopt || parsed_pattern->at(j) == *(begin + i + j);
+                    found = parsed_pattern.at(j) == std::nullopt || parsed_pattern.at(j) == *(begin + i + j);
 
                     if (!found)
                         break;
@@ -73,10 +108,97 @@ namespace omath
             }
             return end;
         }
-
-    private:
         [[nodiscard]]
         static std::expected<std::vector<std::optional<std::byte>>, PatternScanError>
         parse_pattern(const std::string_view& pattern_string);
+
+        [[nodiscard]]
+        constexpr static bool is_space(const char c)
+        {
+            return c == ' ' || c == '\t' || c == '\n' || c == '\r';
+        }
+
+        [[nodiscard]]
+        constexpr static int hex_value(const char c)
+        {
+            if (c >= '0' && c <= '9')
+                return c - '0';
+            if (c >= 'A' && c <= 'F')
+                return c - 'A' + 10;
+            if (c >= 'a' && c <= 'f')
+                return c - 'a' + 10;
+            return -1;
+        }
+        template<fixed_string Pattern>
+        [[nodiscard]]
+        static consteval std::size_t signature_size()
+        {
+            std::size_t count = 0;
+            bool in_token = false;
+
+            for (std::size_t i = 0; i + 1 < sizeof(Pattern.value); ++i)
+            {
+                if (is_space(Pattern.value[i]))
+                {
+                    in_token = false;
+                }
+                else if (!in_token)
+                {
+                    ++count;
+                    in_token = true;
+                }
+            }
+
+            return count;
+        }
+
+        template<fixed_string Pattern>
+        static consteval std::array<std::optional<std::byte>, signature_size<Pattern>()> parse_pattern()
+        {
+            std::array<std::optional<std::byte>, signature_size<Pattern>()> result{};
+            std::size_t out = 0;
+            std::size_t i = 0;
+
+            while (i + 1 < sizeof(Pattern.value))
+            {
+                while (i + 1 < sizeof(Pattern.value) && is_space(Pattern.value[i]))
+                    ++i;
+
+                const std::size_t token_start = i;
+
+                while (i + 1 < sizeof(Pattern.value) && !is_space(Pattern.value[i]))
+                    ++i;
+
+                const std::size_t token_size = i - token_start;
+
+                if (token_size == 0)
+                    continue;
+
+                // ReSharper disable once CppTooWideScope
+                const bool is_wildcard = (token_size == 1 || token_size == 2) && Pattern.value[token_start] == '?';
+
+                if (is_wildcard)
+                {
+                    if (token_size == 2 && Pattern.value[token_start + 1] != '?')
+                        throw std::logic_error("invalid wildcard token");
+
+                    result[out++] = std::nullopt;
+                    continue;
+                }
+
+                if (token_size != 2)
+                    throw std::logic_error("invalid byte token");
+
+                const int high = hex_value(Pattern.value[token_start]);
+                const int low = hex_value(Pattern.value[token_start + 1]);
+
+                if (high < 0 || low < 0)
+                    throw std::logic_error("invalid hex byte");
+
+                result[out++] = static_cast<std::byte>((high << 4) | low);
+            }
+
+            return result;
+        }
     };
 } // namespace omath

include/omath/utility/pe_pattern_scan.hpp

@@ -3,12 +3,13 @@
 //
 
 #pragma once
+#include "pattern_scan.hpp"
+#include "section_scan_result.hpp"
 #include <cstdint>
 #include <filesystem>
 #include <optional>
 #include <span>
 #include <string_view>
-#include "section_scan_result.hpp"
 namespace omath
 {
 
@@ -20,14 +21,74 @@ namespace omath
         scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& pattern,
                                           const std::string_view& target_section_name = ".text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                          const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_loaded_module(module_base_address, target_section_name,
+                                                     &PePatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_file(const std::filesystem::path& path_to_file, const std::string_view& pattern,
                                  const std::string_view& target_section_name = ".text");
 
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                 const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_file(path_to_file, target_section_name,
+                                            &PePatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
         [[nodiscard]]
         static std::optional<SectionScanResult>
         scan_for_pattern_in_memory_file(std::span<const std::byte> file_data, const std::string_view& pattern,
                                         const std::string_view& target_section_name = ".text");
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name = ".text")
+        {
+            return scan_for_pattern_in_memory_file(file_data, target_section_name,
+                                                   &PePatternScanner::scan_section_for_pattern<Pattern>);
+        }
+
+    private:
+        using SectionScanFunction = std::optional<std::ptrdiff_t> (*)(std::span<const std::byte>);
+
+        template<PatternScanner::fixed_string Pattern>
+        [[nodiscard]]
+        static std::optional<std::ptrdiff_t> scan_section_for_pattern(const std::span<const std::byte> section_data)
+        {
+            const auto result = PatternScanner::scan_for_pattern<Pattern>(section_data.begin(), section_data.end());
+
+            if (result == section_data.end())
+                return std::nullopt;
+
+            return result - section_data.begin();
+        }
+
+        [[nodiscard]]
+        static std::optional<std::uintptr_t>
+        scan_for_pattern_in_loaded_module(const void* module_base_address, const std::string_view& target_section_name,
+                                          SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult> scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                                                         const std::string_view& target_section_name,
+                                                                         SectionScanFunction scan_pattern);
+
+        [[nodiscard]]
+        static std::optional<SectionScanResult>
+        scan_for_pattern_in_memory_file(std::span<const std::byte> file_data,
+                                        const std::string_view& target_section_name, SectionScanFunction scan_pattern);
     };
 } // namespace omath

source/utility/elf_pattern_scan.cpp

@@ -304,8 +304,8 @@ namespace
                 elf_headers);
     }
 
-    template<class FileHeader, class SectionHeader>
-    std::optional<std::uintptr_t> scan_in_module_impl(const std::byte* base, const std::string_view pattern,
+    template<class FileHeader, class SectionHeader, class ScanPattern>
+    std::optional<std::uintptr_t> scan_in_module_impl(const std::byte* base, const ScanPattern scan_pattern,
                                                       const std::string_view target_section_name)
     {
         const auto* file_header = reinterpret_cast<const FileHeader*>(base);
@@ -336,13 +336,14 @@ namespace
                 continue;
 
             const auto* section_begin = base + static_cast<std::size_t>(section->sh_addr);
-            const auto* section_end = section_begin + static_cast<std::size_t>(section->sh_size);
+            const auto scan_range =
+                    std::span<const std::byte>{section_begin, static_cast<std::size_t>(section->sh_size)};
 
-            const auto scan_result = omath::PatternScanner::scan_for_pattern(section_begin, section_end, pattern);
-            if (scan_result == section_end)
+            const auto target_offset = scan_pattern(scan_range);
+            if (!target_offset.has_value())
                 return std::nullopt;
 
-            return reinterpret_cast<std::uintptr_t>(scan_result);
+            return reinterpret_cast<std::uintptr_t>(section_begin + target_offset.value());
         }
 
         return std::nullopt;
@@ -374,15 +375,58 @@ namespace omath
         if (!arch.has_value()) [[unlikely]]
             return std::nullopt;
 
+        const auto scan_pattern =
+                [&pattern](const std::span<const std::byte> section_data) -> std::optional<std::ptrdiff_t>
+        {
+            const auto scan_result =
+                    PatternScanner::scan_for_pattern(section_data.begin(), section_data.end(), pattern);
+
+            if (scan_result == section_data.end())
+                return std::nullopt;
+
+            return scan_result - section_data.begin();
+        };
+
         if (arch == FileArch::x64)
             return scan_in_module_impl<Elf64Ehdr, Elf64Shdr>(static_cast<const std::byte*>(module_base_address),
-                                                             pattern, target_section_name);
+                                                             scan_pattern, target_section_name);
         if (arch == FileArch::x32)
             return scan_in_module_impl<Elf32Ehdr, Elf32Shdr>(static_cast<const std::byte*>(module_base_address),
-                                                             pattern, target_section_name);
+                                                             scan_pattern, target_section_name);
 
         std::unreachable();
     }
+
+    std::optional<std::uintptr_t>
+    ElfPatternScanner::scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                                         const std::string_view& target_section_name,
+                                                         const SectionScanFunction scan_pattern)
+    {
+        if (module_base_address == nullptr) [[unlikely]]
+            return std::nullopt;
+
+        const auto* base = static_cast<const std::byte*>(module_base_address);
+
+        constexpr std::string_view valid_elf_signature = "\x7F"
+                                                         "ELF";
+        if (std::string_view{reinterpret_cast<const char*>(base), valid_elf_signature.size()} != valid_elf_signature)
+            return std::nullopt;
+
+        const auto ei_class_value = static_cast<uint8_t>(base[ei_class]);
+        const auto arch = ei_class_value == elfclass64   ? FileArch::x64
+                          : ei_class_value == elfclass32 ? FileArch::x32
+                                                         : std::optional<FileArch>{};
+        if (!arch.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        if (arch == FileArch::x64)
+            return scan_in_module_impl<Elf64Ehdr, Elf64Shdr>(base, scan_pattern, target_section_name);
+        if (arch == FileArch::x32)
+            return scan_in_module_impl<Elf32Ehdr, Elf32Shdr>(base, scan_pattern, target_section_name);
+
+        std::unreachable();
+    }
+
     std::optional<SectionScanResult>
     ElfPatternScanner::scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
                                                 const std::string_view& pattern,
@@ -405,6 +449,26 @@ namespace omath
                                  .target_offset = offset};
     }
 
+    std::optional<SectionScanResult>
+    ElfPatternScanner::scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                                const std::string_view& target_section_name,
+                                                const SectionScanFunction scan_pattern)
+    {
+        const auto section = get_elf_section_by_name(path_to_file, target_section_name);
+
+        if (!section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset = scan_pattern(std::span<const std::byte>{section->data.data(), section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = section->virtual_base_addr,
+                                 .raw_base_addr = section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
+
     std::optional<SectionScanResult>
     ElfPatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
                                                        const std::string_view& pattern,
@@ -427,4 +491,24 @@ namespace omath
                                  .raw_base_addr = section->raw_base_addr,
                                  .target_offset = offset};
     }
+
+    std::optional<SectionScanResult>
+    ElfPatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
+                                                       const std::string_view& target_section_name,
+                                                       const SectionScanFunction scan_pattern)
+    {
+        const auto section = get_elf_section_by_name_from_memory(file_data, target_section_name);
+
+        if (!section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset = scan_pattern(std::span<const std::byte>{section->data.data(), section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = section->virtual_base_addr,
+                                 .raw_base_addr = section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
 } // namespace omath

source/utility/macho_pattern_scan.cpp

@@ -316,8 +316,8 @@ namespace
                     data, section_name);
 
         if (magic == mh_magic_32 || magic == mh_cigam_32)
-            return extract_section_from_memory_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(data,
-                                                                                                           section_name);
+            return extract_section_from_memory_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(
+                    data, section_name);
 
         return std::nullopt;
     }
@@ -344,8 +344,9 @@ namespace
         return extract_section_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(file, section_name);
     }
 
-    template<typename HeaderType, typename SegmentType, typename SectionType, std::uint32_t segment_cmd>
-    std::optional<std::uintptr_t> scan_in_module_impl(const std::byte* base, const std::string_view pattern,
+    template<typename HeaderType, typename SegmentType, typename SectionType, std::uint32_t segment_cmd,
+             class ScanPattern>
+    std::optional<std::uintptr_t> scan_in_module_impl(const std::byte* base, const ScanPattern scan_pattern,
                                                       const std::string_view target_section_name)
     {
         const auto* header = reinterpret_cast<const HeaderType*>(base);
@@ -374,12 +375,13 @@ namespace
                     continue;
                 }
                 const auto* section_begin = base + static_cast<std::size_t>(section->addr);
-                const auto* section_end = section_begin + static_cast<std::size_t>(section->size);
+                const auto scan_range =
+                        std::span<const std::byte>{section_begin, static_cast<std::size_t>(section->size)};
 
-                const auto scan_result = omath::PatternScanner::scan_for_pattern(section_begin, section_end, pattern);
+                const auto target_offset = scan_pattern(scan_range);
 
-                if (scan_result != section_end)
-                    return reinterpret_cast<std::uintptr_t>(scan_result);
+                if (target_offset.has_value())
+                    return reinterpret_cast<std::uintptr_t>(section_begin + target_offset.value());
             }
         }
 
@@ -404,12 +406,48 @@ namespace omath
         std::uint32_t magic{};
         std::memcpy(&magic, base, sizeof(magic));
 
+        const auto scan_pattern =
+                [&pattern](const std::span<const std::byte> section_data) -> std::optional<std::ptrdiff_t>
+        {
+            const auto scan_result =
+                    PatternScanner::scan_for_pattern(section_data.begin(), section_data.end(), pattern);
+
+            if (scan_result == section_data.end())
+                return std::nullopt;
+
+            return scan_result - section_data.begin();
+        };
+
         if (magic == mh_magic_64 || magic == mh_cigam_64)
-            return scan_in_module_impl<MachHeader64, SegmentCommand64, Section64, lc_segment_64>(base, pattern,
+            return scan_in_module_impl<MachHeader64, SegmentCommand64, Section64, lc_segment_64>(base, scan_pattern,
                                                                                                  target_section_name);
 
         if (magic == mh_magic_32 || magic == mh_cigam_32)
-            return scan_in_module_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(base, pattern,
+            return scan_in_module_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(base, scan_pattern,
+                                                                                              target_section_name);
+
+        return std::nullopt;
+    }
+
+    std::optional<std::uintptr_t>
+    MachOPatternScanner::scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                                           const std::string_view& target_section_name,
+                                                           const SectionScanFunction scan_pattern)
+    {
+        if (module_base_address == nullptr) [[unlikely]]
+            return std::nullopt;
+
+        const auto* base = static_cast<const std::byte*>(module_base_address);
+
+        std::uint32_t magic{};
+        std::memcpy(&magic, base, sizeof(magic));
+
+        if (magic == mh_magic_64 || magic == mh_cigam_64)
+            return scan_in_module_impl<MachHeader64, SegmentCommand64, Section64, lc_segment_64>(base, scan_pattern,
+                                                                                                 target_section_name);
+
+        if (magic == mh_magic_32 || magic == mh_cigam_32)
+            return scan_in_module_impl<MachHeader32, SegmentCommand32, Section32, lc_segment>(base, scan_pattern,
                                                                                               target_section_name);
 
         return std::nullopt;
@@ -438,6 +476,27 @@ namespace omath
                                  .target_offset = offset};
     }
 
+    std::optional<SectionScanResult>
+    MachOPatternScanner::scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                                  const std::string_view& target_section_name,
+                                                  const SectionScanFunction scan_pattern)
+    {
+        const auto macho_section = get_macho_section_by_name(path_to_file, target_section_name);
+
+        if (!macho_section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset =
+                scan_pattern(std::span<const std::byte>{macho_section->data.data(), macho_section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = macho_section->virtual_base_addr,
+                                 .raw_base_addr = macho_section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
+
     std::optional<SectionScanResult>
     MachOPatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
                                                          const std::string_view& pattern,
@@ -460,4 +519,24 @@ namespace omath
                                  .raw_base_addr = section->raw_base_addr,
                                  .target_offset = offset};
     }
+
+    std::optional<SectionScanResult>
+    MachOPatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
+                                                         const std::string_view& target_section_name,
+                                                         const SectionScanFunction scan_pattern)
+    {
+        const auto section = get_macho_section_by_name_from_memory(file_data, target_section_name);
+
+        if (!section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset = scan_pattern(std::span<const std::byte>{section->data.data(), section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = section->virtual_base_addr,
+                                 .raw_base_addr = section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
 } // namespace omath

source/utility/pe_pattern_scan.cpp

@@ -234,7 +234,11 @@ namespace
     constexpr bool invalid_nt_header_file(const NtHeaderVariant& variant)
     {
         constexpr std::uint32_t nt_hdr_magic = 0x4550;
-        return std::visit([&nt_hdr_magic](const auto& header) -> bool { return header.signature != nt_hdr_magic; },
+        return std::visit(
+                [&nt_hdr_magic](const auto& header) -> bool
+                {
+                    return header.signature != nt_hdr_magic;
+                },
                 variant);
     }
 
@@ -262,8 +266,7 @@ namespace
         if (nt_off + sizeof(ImageNtHeaders<NtArchitecture::x32_bit>) > data.size())
             return std::nullopt;
 
-        const auto* x86_hdrs =
-                reinterpret_cast<const ImageNtHeaders<NtArchitecture::x32_bit>*>(data.data() + nt_off);
+        const auto* x86_hdrs = reinterpret_cast<const ImageNtHeaders<NtArchitecture::x32_bit>*>(data.data() + nt_off);
 
         NtHeaderVariant nt_headers;
         if (x86_hdrs->optional_header.magic == opt_hdr32_magic)
@@ -284,8 +287,8 @@ namespace
                 [&data, &section_name, nt_off](const auto& concrete_headers) -> std::optional<ExtractedSection>
                 {
                     constexpr std::size_t sig_size = sizeof(concrete_headers.signature);
-                    const auto section_table_off = nt_off + sig_size + sizeof(FileHeader)
-                                                   + concrete_headers.file_header.size_optional_header;
+                    const auto section_table_off =
+                            nt_off + sig_size + sizeof(FileHeader) + concrete_headers.file_header.size_optional_header;
 
                     for (std::size_t i = 0; i < concrete_headers.file_header.num_sections; ++i)
                     {
@@ -435,6 +438,65 @@ namespace omath
                 },
                 nt_header_variant.value());
     }
+
+    std::optional<std::uintptr_t>
+    PePatternScanner::scan_for_pattern_in_loaded_module(const void* module_base_address,
+                                                        const std::string_view& target_section_name,
+                                                        const SectionScanFunction scan_pattern)
+    {
+        const auto base_address = reinterpret_cast<std::uintptr_t>(module_base_address);
+        const auto* base_bytes = static_cast<const std::byte*>(module_base_address);
+
+        if (!base_address)
+            return std::nullopt;
+
+        const auto* dos_header = static_cast<const DosHeader*>(module_base_address);
+
+        if (invalid_dos_header_file(*dos_header)) [[unlikely]]
+            return std::nullopt;
+
+        const auto nt_header_variant = get_nt_header_from_loaded_module(module_base_address);
+
+        if (!nt_header_variant) [[unlikely]]
+            return std::nullopt;
+
+        return std::visit(
+                [base_bytes, base_address, lfanew = dos_header->e_lfanew, &target_section_name,
+                 scan_pattern](const auto& nt_header) -> std::optional<std::uintptr_t>
+                {
+                    constexpr std::size_t signature_size = sizeof(nt_header.signature);
+                    const auto section_table_off = static_cast<std::size_t>(lfanew) + signature_size
+                                                   + sizeof(FileHeader) + nt_header.file_header.size_optional_header;
+
+                    const auto* section_table = reinterpret_cast<const SectionHeader*>(base_bytes + section_table_off);
+
+                    for (std::size_t i = 0; i < nt_header.file_header.num_sections; ++i)
+                    {
+                        const auto* section = section_table + i;
+
+                        if (std::string_view{section->name, sizeof(section->name)} != target_section_name
+                            || section->size_raw_data == 0)
+                            continue;
+
+                        const auto section_size = section->virtual_size != 0
+                                                          ? static_cast<std::size_t>(section->virtual_size)
+                                                          : static_cast<std::size_t>(section->size_raw_data);
+
+                        const auto* section_begin =
+                                reinterpret_cast<const std::byte*>(base_address + section->virtual_address);
+                        const auto scan_range = std::span<const std::byte>{section_begin, section_size};
+
+                        const auto target_offset = scan_pattern(scan_range);
+
+                        if (target_offset.has_value())
+                            return reinterpret_cast<std::uintptr_t>(section_begin + target_offset.value());
+                    }
+
+                    return std::nullopt;
+                },
+                nt_header_variant.value());
+    }
+
     std::optional<SectionScanResult>
     PePatternScanner::scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
                                                const std::string_view& pattern,
@@ -457,6 +519,27 @@ namespace omath
                                  .target_offset = offset};
     }
 
+    std::optional<SectionScanResult>
+    PePatternScanner::scan_for_pattern_in_file(const std::filesystem::path& path_to_file,
+                                               const std::string_view& target_section_name,
+                                               const SectionScanFunction scan_pattern)
+    {
+        const auto pe_section = extract_section_from_pe_file(path_to_file, target_section_name);
+
+        if (!pe_section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset =
+                scan_pattern(std::span<const std::byte>{pe_section->data.data(), pe_section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = pe_section->virtual_base_addr,
+                                 .raw_base_addr = pe_section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
+
     std::optional<SectionScanResult>
     PePatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
                                                       const std::string_view& pattern,
@@ -479,4 +562,25 @@ namespace omath
                                  .raw_base_addr = pe_section->raw_base_addr,
                                  .target_offset = offset};
     }
+
+    std::optional<SectionScanResult>
+    PePatternScanner::scan_for_pattern_in_memory_file(const std::span<const std::byte> file_data,
+                                                      const std::string_view& target_section_name,
+                                                      const SectionScanFunction scan_pattern)
+    {
+        const auto pe_section = extract_section_from_pe_memory(file_data, target_section_name);
+
+        if (!pe_section.has_value()) [[unlikely]]
+            return std::nullopt;
+
+        const auto target_offset =
+                scan_pattern(std::span<const std::byte>{pe_section->data.data(), pe_section->data.size()});
+
+        if (!target_offset.has_value())
+            return std::nullopt;
+
+        return SectionScanResult{.virtual_base_addr = pe_section->virtual_base_addr,
+                                 .raw_base_addr = pe_section->raw_base_addr,
+                                 .target_offset = target_offset.value()};
+    }
 } // namespace omath

tests/general/unit_test_elf_scanner.cpp

@@ -35,13 +35,22 @@ static std::vector<std::byte> make_elf64_with_text_section(const std::vector<std
 
     std::vector<std::byte> buf(total_size, std::byte{0});
 
-    auto w8 = [&](std::size_t off, std::uint8_t v) { buf[off] = std::byte{v}; };
+    auto w8 = [&](std::size_t off, std::uint8_t v)
+    {
+        buf[off] = std::byte{v};
+    };
     auto w16 = [&](std::size_t off, std::uint16_t v)
-    { std::memcpy(buf.data() + off, &v, 2); };
+    {
+        std::memcpy(buf.data() + off, &v, 2);
+    };
     auto w32 = [&](std::size_t off, std::uint32_t v)
-    { std::memcpy(buf.data() + off, &v, 4); };
+    {
+        std::memcpy(buf.data() + off, &v, 4);
+    };
     auto w64 = [&](std::size_t off, std::uint64_t v)
-    { std::memcpy(buf.data() + off, &v, 8); };
+    {
+        std::memcpy(buf.data() + off, &v, 8);
+    };
 
     // --- ELF64 file header ---
     // e_ident
@@ -151,6 +160,18 @@ TEST(unit_test_elf_pattern_scan_memory, finds_pattern_with_wildcard)
     EXPECT_EQ(result->target_offset, 0);
 }
 
+TEST(unit_test_elf_pattern_scan_memory, consteval_finds_pattern_with_wildcard)
+{
+    const std::vector<std::uint8_t> code = {0x00, 0xDE, 0xAD, 0xBE, 0xEF};
+    const auto buf = make_elf64_with_text_section(code);
+
+    const auto result =
+            ElfPatternScanner::scan_for_pattern_in_memory_file<"DE ?? BE EF">(std::span<const std::byte>{buf}, ".text");
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 1);
+}
+
 TEST(unit_test_elf_pattern_scan_memory, pattern_not_found_returns_nullopt)
 {
     const std::vector<std::uint8_t> code = {0x01, 0x02, 0x03, 0x04};
@@ -182,8 +203,8 @@ TEST(unit_test_elf_pattern_scan_memory, missing_section_returns_nullopt)
     const std::vector<std::uint8_t> code = {0x90, 0x90};
     const auto buf = make_elf64_with_text_section(code);
 
-    const auto result = ElfPatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf},
-                                                                            "90 90", ".nonexistent");
+    const auto result = ElfPatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf}, "90 90",
+                                                                           ".nonexistent");
 
     EXPECT_FALSE(result.has_value());
 }
@@ -201,8 +222,8 @@ TEST(unit_test_elf_pattern_scan_memory, matches_file_scan)
     }
 
     const auto file_result = ElfPatternScanner::scan_for_pattern_in_file(tmp_path, "48 89 E5 DE AD", ".text");
-    const auto mem_result =
-            ElfPatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf}, "48 89 E5 DE AD", ".text");
+    const auto mem_result = ElfPatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf},
+                                                                               "48 89 E5 DE AD", ".text");
 
     std::filesystem::remove(tmp_path);
 
@@ -212,3 +233,27 @@ TEST(unit_test_elf_pattern_scan_memory, matches_file_scan)
     EXPECT_EQ(file_result->raw_base_addr, mem_result->raw_base_addr);
     EXPECT_EQ(file_result->target_offset, mem_result->target_offset);
 }
+
+TEST(unit_test_elf_pattern_scan_memory, consteval_file_scan_finds_pattern)
+{
+    const std::vector<std::uint8_t> code = {0x48, 0x89, 0xE5, 0xDE, 0xAD};
+    const auto buf = make_elf64_with_text_section(code);
+    const auto tmp_path = std::filesystem::temp_directory_path() / "omath_elf_consteval_test.elf";
+    {
+        std::ofstream out(tmp_path, std::ios::binary);
+        out.write(reinterpret_cast<const char*>(buf.data()), static_cast<std::streamsize>(buf.size()));
+    }
+
+    const auto result = ElfPatternScanner::scan_for_pattern_in_file<"48 ?? E5">(tmp_path, ".text");
+
+    std::filesystem::remove(tmp_path);
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 0);
+}
+
+TEST(unit_test_elf_pattern_scan_memory, consteval_loaded_module_null_returns_nullopt)
+{
+    const auto result = ElfPatternScanner::scan_for_pattern_in_loaded_module<"DE AD">(nullptr);
+    EXPECT_FALSE(result.has_value());
+}

tests/general/unit_test_macho_memory_file_scan.cpp

@@ -1,5 +1,7 @@
 // Tests for MachOPatternScanner::scan_for_pattern_in_memory_file
 #include <cstring>
+#include <filesystem>
+#include <fstream>
 #include <gtest/gtest.h>
 #include <omath/utility/macho_pattern_scan.hpp>
 #include <span>
@@ -37,13 +39,18 @@ static std::vector<std::byte> make_macho64_with_text_section(const std::vector<s
     constexpr std::size_t total_size = text_raw_off + text_raw_size;
     constexpr std::uint64_t text_vmaddr = 0x1000ULL;
 
-    constexpr std::uint32_t cmd_size =
-            static_cast<std::uint32_t>(seg_size + sect_hdr_size); // segment + 1 section
+    constexpr std::uint32_t cmd_size = static_cast<std::uint32_t>(seg_size + sect_hdr_size); // segment + 1 section
 
     std::vector<std::byte> buf(total_size, std::byte{0});
 
-    auto w32 = [&](std::size_t off, std::uint32_t v) { std::memcpy(buf.data() + off, &v, 4); };
-    auto w64 = [&](std::size_t off, std::uint64_t v) { std::memcpy(buf.data() + off, &v, 8); };
+    auto w32 = [&](std::size_t off, std::uint32_t v)
+    {
+        std::memcpy(buf.data() + off, &v, 4);
+    };
+    auto w64 = [&](std::size_t off, std::uint64_t v)
+    {
+        std::memcpy(buf.data() + off, &v, 8);
+    };
 
     // MachHeader64
     w32(0, mh_magic_64);
@@ -105,6 +112,18 @@ TEST(unit_test_macho_memory_file_scan, finds_pattern_with_wildcard)
     EXPECT_EQ(result->target_offset, 0);
 }
 
+TEST(unit_test_macho_memory_file_scan, consteval_finds_pattern_with_wildcard)
+{
+    const std::vector<std::uint8_t> code = {0x00, 0xDE, 0xAD, 0xBE, 0xEF};
+    const auto buf = make_macho64_with_text_section(code);
+
+    const auto result =
+            MachOPatternScanner::scan_for_pattern_in_memory_file<"DE ?? BE EF">(std::span<const std::byte>{buf});
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 1);
+}
+
 TEST(unit_test_macho_memory_file_scan, pattern_not_found_returns_nullopt)
 {
     const std::vector<std::uint8_t> code = {0x01, 0x02, 0x03};
@@ -143,3 +162,27 @@ TEST(unit_test_macho_memory_file_scan, raw_addr_and_virtual_addr_correct)
     EXPECT_EQ(result->raw_base_addr, expected_raw_off);
     EXPECT_EQ(result->virtual_base_addr, 0x1000u);
 }
+
+TEST(unit_test_macho_memory_file_scan, consteval_file_scan_finds_pattern)
+{
+    const std::vector<std::uint8_t> code = {0x48, 0x89, 0xE5, 0xDE, 0xAD};
+    const auto buf = make_macho64_with_text_section(code);
+    const auto tmp_path = std::filesystem::temp_directory_path() / "omath_macho_consteval_test.bin";
+    {
+        std::ofstream out(tmp_path, std::ios::binary);
+        out.write(reinterpret_cast<const char*>(buf.data()), static_cast<std::streamsize>(buf.size()));
+    }
+
+    const auto result = MachOPatternScanner::scan_for_pattern_in_file<"48 ?? E5">(tmp_path);
+
+    std::filesystem::remove(tmp_path);
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 0);
+}
+
+TEST(unit_test_macho_memory_file_scan, consteval_loaded_module_null_returns_nullopt)
+{
+    const auto result = MachOPatternScanner::scan_for_pattern_in_loaded_module<"DE AD">(nullptr);
+    EXPECT_FALSE(result.has_value());
+}

tests/general/unit_test_pattern_scan.cpp

@@ -4,8 +4,8 @@
 #include "omath/utility/pe_pattern_scan.hpp"
 #include "gtest/gtest.h"
 #include <omath/utility/pattern_scan.hpp>
-#include <source_location>
 #include <print>
+#include <source_location>
 TEST(unit_test_pattern_scan, read_test)
 {
     const auto result = omath::PatternScanner::parse_pattern("FF ? ?? E9");
@@ -51,3 +51,37 @@ TEST(unit_test_pattern_scan, corner_case_4)
     const auto result = omath::PatternScanner::parse_pattern("X ? ?? E9 ");
     EXPECT_FALSE(result.has_value());
 }
+
+TEST(unit_test_pattern_scan, consteval_read_test)
+{
+    constexpr auto result = omath::PatternScanner::parse_pattern<"FF ? ?? E9">();
+
+    static_assert(result.size() == 4);
+    static_assert(result[0] == static_cast<std::byte>(0xFF));
+    static_assert(result[1] == std::nullopt);
+    static_assert(result[2] == std::nullopt);
+    static_assert(result[3] == static_cast<std::byte>(0xE9));
+
+    EXPECT_EQ(result[0], static_cast<std::byte>(0xFF));
+    EXPECT_EQ(result[1], std::nullopt);
+    EXPECT_EQ(result[2], std::nullopt);
+    EXPECT_EQ(result[3], static_cast<std::byte>(0xE9));
+}
+
+TEST(unit_test_pattern_scan, consteval_spacing_and_case)
+{
+    constexpr auto result = omath::PatternScanner::parse_pattern<" \tde\nAD\r?? ? ef ">();
+
+    static_assert(result.size() == 5);
+    static_assert(result[0] == static_cast<std::byte>(0xDE));
+    static_assert(result[1] == static_cast<std::byte>(0xAD));
+    static_assert(result[2] == std::nullopt);
+    static_assert(result[3] == std::nullopt);
+    static_assert(result[4] == static_cast<std::byte>(0xEF));
+
+    EXPECT_EQ(result[0], static_cast<std::byte>(0xDE));
+    EXPECT_EQ(result[1], static_cast<std::byte>(0xAD));
+    EXPECT_EQ(result[2], std::nullopt);
+    EXPECT_EQ(result[3], std::nullopt);
+    EXPECT_EQ(result[4], static_cast<std::byte>(0xEF));
+}

tests/general/unit_test_pattern_scan_extra.cpp

@@ -14,6 +14,16 @@ TEST(unit_test_pattern_scan_extra, IteratorScanFound)
     EXPECT_EQ(std::distance(buf.begin(), it), 0);
 }
 
+TEST(unit_test_pattern_scan_extra, ConstevalIteratorScan)
+{
+    std::vector<std::byte> buf = {static_cast<std::byte>(0x00), static_cast<std::byte>(0xDE),
+                                  static_cast<std::byte>(0xAD), static_cast<std::byte>(0xBE),
+                                  static_cast<std::byte>(0xEF), static_cast<std::byte>(0x11)};
+    const auto it = PatternScanner::scan_for_pattern<"DE ?? BE EF">(buf.begin(), buf.end());
+    EXPECT_NE(it, buf.end());
+    EXPECT_EQ(std::distance(buf.begin(), it), 1);
+}
+
 TEST(unit_test_pattern_scan_extra, IteratorScanNotFound)
 {
     std::vector<std::byte> buf = {static_cast<std::byte>(0x00), static_cast<std::byte>(0x11),

tests/general/unit_test_pe_memory_file_scan.cpp

@@ -1,5 +1,7 @@
 // Tests for PePatternScanner::scan_for_pattern_in_memory_file
 #include <cstring>
+#include <filesystem>
+#include <fstream>
 #include <gtest/gtest.h>
 #include <omath/utility/pe_pattern_scan.hpp>
 #include <span>
@@ -10,8 +12,7 @@ using namespace omath;
 // Reuse the fake-module builder from unit_test_pe_pattern_scan_loaded.cpp but
 // lay out the buffer as a raw PE *file* (ptr_raw_data != virtual_address).
 static std::vector<std::byte> make_fake_pe_file(std::uint32_t virtual_address, std::uint32_t ptr_raw_data,
-                                                std::uint32_t section_size,
-                                                const std::vector<std::uint8_t>& code_bytes)
+                                                std::uint32_t section_size, const std::vector<std::uint8_t>& code_bytes)
 {
     constexpr std::uint32_t e_lfanew = 0x80;
     constexpr std::uint32_t nt_sig = 0x4550;
@@ -24,9 +25,18 @@ static std::vector<std::byte> make_fake_pe_file(std::uint32_t virtual_address, s
     const std::uint32_t total_size = ptr_raw_data + section_size + 0x100;
     std::vector<std::byte> buf(total_size, std::byte{0});
 
-    auto w16 = [&](std::size_t off, std::uint16_t v) { std::memcpy(buf.data() + off, &v, 2); };
-    auto w32 = [&](std::size_t off, std::uint32_t v) { std::memcpy(buf.data() + off, &v, 4); };
-    auto w64 = [&](std::size_t off, std::uint64_t v) { std::memcpy(buf.data() + off, &v, 8); };
+    auto w16 = [&](std::size_t off, std::uint16_t v)
+    {
+        std::memcpy(buf.data() + off, &v, 2);
+    };
+    auto w32 = [&](std::size_t off, std::uint32_t v)
+    {
+        std::memcpy(buf.data() + off, &v, 4);
+    };
+    auto w64 = [&](std::size_t off, std::uint64_t v)
+    {
+        std::memcpy(buf.data() + off, &v, 8);
+    };
 
     // DOS header
     w16(0x00, 0x5A4D);
@@ -87,13 +97,24 @@ TEST(unit_test_pe_memory_file_scan, finds_pattern_with_wildcard)
     EXPECT_EQ(result->target_offset, 0);
 }
 
+TEST(unit_test_pe_memory_file_scan, consteval_finds_pattern_with_wildcard)
+{
+    const std::vector<std::uint8_t> code = {0x00, 0xDE, 0xAD, 0xBE, 0xEF};
+    const auto buf = make_fake_pe_file(0x2000, 0x600, static_cast<std::uint32_t>(code.size()), code);
+
+    const auto result =
+            PePatternScanner::scan_for_pattern_in_memory_file<"DE ?? BE EF">(std::span<const std::byte>{buf});
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 1);
+}
+
 TEST(unit_test_pe_memory_file_scan, pattern_not_found_returns_nullopt)
 {
     const std::vector<std::uint8_t> code = {0x01, 0x02, 0x03};
     const auto buf = make_fake_pe_file(0x1000, 0x400, static_cast<std::uint32_t>(code.size()), code);
 
-    const auto result =
-            PePatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf}, "AA BB CC");
+    const auto result = PePatternScanner::scan_for_pattern_in_memory_file(std::span<const std::byte>{buf}, "AA BB CC");
 
     EXPECT_FALSE(result.has_value());
 }
@@ -126,3 +147,27 @@ TEST(unit_test_pe_memory_file_scan, raw_addr_differs_from_virtual_address)
     // virtual_base_addr = virtual_address + image_base (image_base = 0)
     EXPECT_EQ(result->virtual_base_addr, 0x3000u);
 }
+
+TEST(unit_test_pe_memory_file_scan, consteval_file_scan_finds_pattern)
+{
+    const std::vector<std::uint8_t> code = {0x48, 0x89, 0xE5, 0xDE, 0xAD};
+    const auto buf = make_fake_pe_file(0x2000, 0x600, static_cast<std::uint32_t>(code.size()), code);
+    const auto tmp_path = std::filesystem::temp_directory_path() / "omath_pe_consteval_test.exe";
+    {
+        std::ofstream out(tmp_path, std::ios::binary);
+        out.write(reinterpret_cast<const char*>(buf.data()), static_cast<std::streamsize>(buf.size()));
+    }
+
+    const auto result = PePatternScanner::scan_for_pattern_in_file<"48 ?? E5">(tmp_path);
+
+    std::filesystem::remove(tmp_path);
+
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(result->target_offset, 0);
+}
+
+TEST(unit_test_pe_memory_file_scan, consteval_loaded_module_null_returns_nullopt)
+{
+    const auto result = PePatternScanner::scan_for_pattern_in_loaded_module<"DE AD">(nullptr);
+    EXPECT_FALSE(result.has_value());
+}