use dvided module
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0017c36e2f
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GPG key ID:
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4 changed files with 81 additions and 63 deletions
1
.clangd
1
.clangd
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@ -1,5 +1,6 @@
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CompileFlags:
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Add:
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- -std=c++26
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- -Xclang
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- -fno-validate-pch
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- -fretain-comments-from-system-headers
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31
Makefile
31
Makefile
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@ -1,24 +1,39 @@
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.RECIPEPREFIX = >
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.DEFAULT_GOAL = build/main.out
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CXX = clang++
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CXXFLAGS += -std=c++26 -Wno-experimental-header-units
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CXXFLAGS += -std=c++26 -Wno-experimental-header-units -Wno-unused-command-line-argument
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LDFLAGS += -std=c++26
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SYSTEMHEADER_FLAGS = -Wno-deprecated-builtins -Wno-pragma-system-header-outside-header -Wno-keyword-compat
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build_module_path = $(let first rest,$1,$(if $(rest),-fmodule-file=$(first) $(call build_module_path,$(rest)),-fmodule-file=$(first)))
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module_pair = $(if $(findstring user,$1),$(patsubst build/user/%.pcm,%=,$1))$1
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build_module_path = $(if $1,$(let first rest,$1,$(if $(rest),-fmodule-file=$(call module_pair,$(first)) $(call build_module_path,$(rest)),-fmodule-file=$(call module_pair,$(first)))))
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object_build = $(filter-out %.pcm,$^) $(call build_module_path,$(filter %.pcm,$^))
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autodir = @mkdir -p $(@D)
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build/main.out: build/main.o
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build/main.out: build/main.o build/builder.o
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> $(call autodir)
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> $(CXX) $(LDFLAGS) $^ -o $@
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build/main.o: main.cxx build/print.pcm build/type_traits.pcm
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> $(CXX) $(CXXFLAGS) -c $(filter-out %.pcm,$^) $(call build_module_path,$(filter %.pcm,$^))
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build/main.o:: main.cxx build/system/print.pcm build/user/builder.pcm
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build/builder.o:: builder.cppm build/system/type_traits.pcm
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build/user/builder.pcm:: build/system/type_traits.pcm
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build/%.o::
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> $(call autodir)
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> $(CXX) $(CXXFLAGS) -c $(call object_build)
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> @mv $(patsubst build/%,%,$@) $@
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build/%.pcm:
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> $(CXX) $(CXXFLAGS) -xc++-system-header --precompile $(patsubst build/%.pcm,%,$@) -o $@ $(SYSTEMHEADER_FLAGS)
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build/user/%.pcm:: %.cppm
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> $(call autodir)
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> $(CXX) $(CXXFLAGS) --precompile -o $@ $(call object_build)
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build/system/%.pcm:
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> $(call autodir)
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> $(CXX) $(CXXFLAGS) -xc++-system-header --precompile $(patsubst build/system/%.pcm,%,$@) -o $@ $(SYSTEMHEADER_FLAGS)
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.PHONY: clean run
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clean:
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> @-rm -rf ./build/*
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> @-rm -rf ./build
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bear: clean
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> bear -- $(MAKE)
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56
builder.cppm
Normal file
56
builder.cppm
Normal file
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@ -0,0 +1,56 @@
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export module builder;
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import <type_traits>;
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export template <bool param1 = false, bool param2 = false>
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struct Builder;
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template <bool enabled>
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struct BuildMixin {};
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template <>
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struct BuildMixin<true> {
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auto build(this auto&& self)
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requires requires { self.p1 + self.p2; }
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{
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return self.p1 + self.p2;
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}
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};
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template <bool enabled>
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struct Param1Mixin {};
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template <>
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struct Param1Mixin<false> {
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auto fill_param1(this auto&& self)
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requires requires { self.p1; }
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{
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self.p1 = 1;
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return Builder<true, std::remove_reference_t<decltype(self)>::param2_v>(
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self);
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}
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};
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template <bool enabled>
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struct Param2Mixin {};
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template <>
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struct Param2Mixin<false> {
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auto fill_param2(this auto&& self)
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requires requires { self.p2; }
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{
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self.p2 = 1;
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return Builder<std::remove_reference_t<decltype(self)>::param1_v, true>(
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self);
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}
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};
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template <bool param1, bool param2>
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struct Builder : BuildMixin<param1 && param2>,
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Param1Mixin<param1>,
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Param2Mixin<param2> {
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const constinit static auto param1_v = param1;
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const constinit static auto param2_v = param2;
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int p1;
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int p2;
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Builder() : p1(0), p2(0) {}
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Builder(auto&& other) : p1(other.p1), p2(other.p2) {}
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};
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56
main.cxx
56
main.cxx
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@ -1,59 +1,5 @@
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import <print>;
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import <type_traits>;
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template <bool param1 = false, bool param2 = false>
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struct Builder;
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template <bool enabled>
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struct BuildMixin {};
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template <>
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struct BuildMixin<true> {
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auto build(this auto&& self)
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requires requires { self.p1 + self.p2; }
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{
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return self.p1 + self.p2;
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}
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};
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template <bool enabled>
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struct Param1Mixin {};
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template <>
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struct Param1Mixin<false> {
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auto fill_param1(this auto&& self)
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requires requires { self.p1; }
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{
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self.p1 = 1;
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return Builder<true, std::remove_reference_t<decltype(self)>::param2_v>(
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self);
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}
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};
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template <bool enabled>
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struct Param2Mixin {};
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template <>
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struct Param2Mixin<false> {
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auto fill_param2(this auto&& self)
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requires requires { self.p2; }
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{
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self.p2 = 1;
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return Builder<std::remove_reference_t<decltype(self)>::param1_v, true>(
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self);
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}
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};
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template <bool param1, bool param2>
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struct Builder : BuildMixin<param1 && param2>,
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Param1Mixin<param1>,
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Param2Mixin<param2> {
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const constinit static auto param1_v = param1;
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const constinit static auto param2_v = param2;
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int p1;
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int p2;
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Builder() : p1(0), p2(0) {}
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Builder(auto&& other) : p1(other.p1), p2(other.p2) {}
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};
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import builder;
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auto main() -> int {
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Builder builder;
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