From 2c92e07f337e42cf58970443f9de678f85a9b2a4 Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Thu, 19 Oct 2023 22:50:07 -0700
Subject: The great renaming: switch to "module style"

---
 src/brussel.codegen.comp/CodegenDecl.hpp | 154 +++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 src/brussel.codegen.comp/CodegenDecl.hpp

(limited to 'src/brussel.codegen.comp/CodegenDecl.hpp')

diff --git a/src/brussel.codegen.comp/CodegenDecl.hpp b/src/brussel.codegen.comp/CodegenDecl.hpp
new file mode 100644
index 0000000..f1ac5b1
--- /dev/null
+++ b/src/brussel.codegen.comp/CodegenDecl.hpp
@@ -0,0 +1,154 @@
+#pragma once
+
+#include "CodegenOutput.hpp"
+
+#include <string>
+#include <vector>
+
+// TODO replace std::string name with std::string_view into the token storage?
+
+struct SourceFile {
+	std::string filename;
+	CodegenOutput preHeaderOutput;
+	CodegenOutput postHeaderOutput;
+	CodegenOutput postSourceOutput;
+	CodegenOutput tuOutput; // "tu" = Translation Unit, produces a separately compiled .cpp file
+	bool header = false;
+	/// Whether this file is being reprocessed in this invocation of codegen.exe or not.
+	bool reprocessing = false;
+};
+
+struct DeclNamespace {
+	// NOTE: namespace doesn't have a source file field, because the same namespace can be "reopened" in multipled files
+
+	DeclNamespace* container = nullptr;
+	std::string name;
+	const std::string* fullname = nullptr; // View into storage map key
+};
+
+struct DeclStruct;
+struct DeclMemberVariable {
+	DeclStruct* containerStruct = nullptr;
+	std::string name;
+	std::string type;
+	std::string getterName;
+	std::string setterName;
+	bool isGetterGenerated = false;
+	bool isSetterGenerated = false;
+};
+struct DeclMemberFunction {
+	DeclStruct* containerStruct = nullptr;
+	// TODO
+};
+
+// Structs or classes
+struct DeclStruct {
+	SourceFile* sourceFile = nullptr;
+	DeclNamespace* container = nullptr;
+	std::vector<const DeclStruct*> baseClasses;
+	std::vector<DeclMemberVariable> memberVariables;
+	std::vector<DeclMemberVariable> generatedVariables;
+	std::vector<DeclMemberFunction> memberFunctions;
+	std::vector<DeclMemberFunction> generatedFunctions;
+	std::string name;
+	mutable std::string mangledName;
+	const std::string* fullname = nullptr; // View into storage map key
+
+	// Scanned generation options
+	bool generating : 1 = false;
+	bool generatingInheritanceHiearchy : 1 = false;
+
+	const std::string& GetName() const { return name; }
+	const std::string& GetFullName() const { return *fullname; }
+	const std::string& GetMangledName() const;
+};
+
+struct DeclXGlobalVar {
+	std::string name;
+	bool hasCtor = false;
+	bool hasDtor = false;
+
+	static std::string MangleCtorName(std::string_view targetName);
+	std::string GetMangledCtorName() const { return MangleCtorName(name); }
+	static std::string MangleDtorName(std::string_view targetName);
+	std::string GetMangledDtorName() const { return MangleDtorName(name); }
+};
+
+enum EnumUnderlyingType {
+	EUT_Int8,
+	EUT_Int16,
+	EUT_Int32,
+	EUT_Int64,
+	EUT_Uint8,
+	EUT_Uint16,
+	EUT_Uint32,
+	EUT_Uint64,
+	EUT_COUNT,
+};
+
+enum EnumValuePattern {
+	// The numbers cover n..m with no gaps
+	EVP_Continuous,
+	// The numbers cover for i in n..m, 1 << i
+	// e.g. [0] = 1 << 0,
+	//      [1] = 1 << 1.
+	//      [2] = 1 << 2. etc.
+	EVP_Bits,
+	// The numbesr don't have a particular pattern
+	EVP_Random,
+	EVP_COUNT,
+};
+
+struct DeclEnumElement {
+	std::string name;
+	// TODO support int64_t, etc. enum underlying types
+	uint64_t value;
+};
+
+struct DeclEnum {
+	SourceFile* sourceFile = nullptr;
+	DeclNamespace* container = nullptr;
+	std::string name;
+	mutable std::string mangledName;
+	const std::string* fullname = nullptr; // View into storage map key
+	std::vector<DeclEnumElement> elements;
+	EnumUnderlyingType underlyingType;
+	// Start with invalid value, calculate on demand
+	mutable EnumValuePattern pattern = EVP_COUNT;
+
+	// TODO replace this with a regex?
+	std::string generateRemovingPrefix;
+	std::string generatingAddingPrefix;
+	// NOTE: this flag acts as a gate for every specific generating option, must be enabled for them to work
+	bool generating : 1 = false;
+	bool generateToString : 1 = false;
+	bool generateFromString : 1 = false;
+	// NOTE: see GenerateForEnum() for the exact heuristics
+	bool generateExcludeUseHeuristics : 1 = false;
+
+	const std::string& GetName() const { return name; }
+	const std::string& GetFullName() const { return *fullname; }
+	const std::string& GetMangledName() const;
+
+	std::string_view GetUnderlyingTypeName() const;
+
+	EnumValuePattern CalcPattern() const;
+	EnumValuePattern GetPattern() const;
+};
+
+struct DeclFunctionArgument {
+	std::string type;
+	std::string name;
+};
+
+struct DeclFunction {
+	SourceFile* sourceFile = nullptr;
+	DeclNamespace* container = nullptr;
+	// Things like extern, static, etc. that gets written before the function return type
+	std::string prefix;
+	std::string name;
+	const std::string* fullname = nullptr; // View into storage map key
+	std::string returnType;
+	std::vector<DeclFunctionArgument> arguments;
+	std::string body;
+};
-- 
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