From ce8f1619a4bba001c57de06f8aef21a4941b219c Mon Sep 17 00:00:00 2001
From: Pasha Bibko <156938226+PashaBibko@users.noreply.github.com>
Date: Mon, 28 Apr 2025 21:16:54 +0100
Subject: [PATCH] Variables can now be read from

---
 Parser/src/AST-LLVM.cpp |  5 ++++-
 Parser/src/Parser.cpp   |  4 ++++
 README.md               |  2 +-
 example/main.lx         | 12 ++++++++++--
 4 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/Parser/src/AST-LLVM.cpp b/Parser/src/AST-LLVM.cpp
index e5d1525..2adb8ae 100644
--- a/Parser/src/AST-LLVM.cpp
+++ b/Parser/src/AST-LLVM.cpp
@@ -92,6 +92,9 @@ namespace LX::AST
 
 	llvm::Value* VariableAccess::GenIR(InfoLLVM& LLVM)
 	{
-		return nullptr;
+		llvm::AllocaInst* var = LLVM.scope->GetVar(m_Name);
+		ThrowIf<Scope::VariableDoesntExist>(var == nullptr);
+
+		return LLVM.builder.CreateLoad(llvm::Type::getInt32Ty(LLVM.context), var, m_Name + "_val");
 	}
 }
diff --git a/Parser/src/Parser.cpp b/Parser/src/Parser.cpp
index 9934497..ddfb8af 100644
--- a/Parser/src/Parser.cpp
+++ b/Parser/src/Parser.cpp
@@ -42,6 +42,10 @@ namespace LX
 			case Token::NUMBER_LITERAL:
 				return std::make_unique<AST::NumberLiteral>(p.tokens[p.index++].GetContents());
 
+			// If an Identifier has got here it means a variable is being accessed //
+			case Token::IDENTIFIER:
+				return std::make_unique<AST::VariableAccess>(p.tokens[p.index++].GetContents());
+
 			// TODO: Fix this //
 			case Token::OPEN_BRACKET:
 				p.scopeDepth++;
diff --git a/README.md b/README.md
index ad59f17..1fa9995 100644
--- a/README.md
+++ b/README.md
@@ -3,10 +3,10 @@
 This is my custom compiled language written in C++ based off of the LLVM toolchain. Do not use the language in it's current state unless you are insane.
 
 ### Planned features
-- Variables
 - Operations (Maths + BinOp)
 - Functions
 - More than just int as a type
+- References / Pointers
 - Structs / Classes (Polymorphism + vtables)
 
 ### Stuff I want to do later
diff --git a/example/main.lx b/example/main.lx
index bf8aa63..6aa1f43 100644
--- a/example/main.lx
+++ b/example/main.lx
@@ -1,5 +1,13 @@
 func main()
 {
-    int result
-    result = 4
+    int a
+    a = 4
+
+    int b
+    b = 7
+
+    int c
+    c = a + b
+
+    return c
 }