Add reading file to buffer macro, only works for one global per file

examples/macro_easy.reid

@@ -1,4 +1,5 @@
 fn main() -> u8 {
     // let message = String::from(include_bytes!("./macro_easy_file.txt"));
-    return test_macro!("./examples/macro_easy_file.txt");
+    let bytes = test_macro!("./examples/macro_easy_file.txt");
+    return bytes[0];
 }

reid-llvm-lib/src/lib.rs

@@ -276,7 +276,7 @@ impl Instr {
             Instr::ShiftRightLogical(..) => "lshr",
             Instr::ShiftRightArithmetic(..) => "ashr",
             Instr::ShiftLeft(..) => "shl",
-            Instr::GetGlobal(global_value) => todo!(),
+            Instr::GetGlobal(..) => "global",
         }
     }
 }

reid/src/codegen/allocator.rs

@@ -195,6 +195,7 @@ impl mir::Expression {
             mir::ExprKind::AssociatedFunctionCall(ty, fn_call) => {
                 allocated.extend(fn_call.allocate(&format!("{}::{}", ty, fn_call.name), scope))
             }
+            mir::ExprKind::GlobalRef(..) => {}
         }
 
         allocated

reid/src/codegen/mod.rs

@@ -201,9 +201,10 @@ impl mir::Module {
             insert_debug!(&TypeKind::CustomType(type_key.clone()));
         }
 
+        let mut globals = HashMap::new();
         for global in &self.globals {
             let (const_value, _) = global.kind.codegen(context, &type_values, &module)?;
-            module.add_global(&global.name, const_value);
+            globals.insert(global.name.clone(), module.add_global(&global.name, const_value));
         }
 
         let mut functions = HashMap::new();
@@ -379,6 +380,7 @@ impl mir::Module {
                                 functions: &functions,
                                 types: &types,
                                 type_values: &type_values,
+                                globals: &globals,
                                 stack_values: HashMap::new(),
                                 debug: Some(Debug {
                                     info: &debug,
@@ -461,6 +463,7 @@ impl mir::Module {
                         scope: compile_unit.clone(),
                         types: &debug_types,
                     }),
+                    globals: &globals,
                     binops: &binops,
                     allocator: Rc::new(RefCell::new(allocator)),
                 };
@@ -521,6 +524,7 @@ impl mir::Module {
                         scope: compile_unit.clone(),
                         types: &debug_types,
                     }),
+                    globals: &globals,
                     binops: &binops,
                     allocator: Rc::new(RefCell::new(allocator)),
                 };
@@ -724,6 +728,7 @@ impl mir::Statement {
             mir::StmtKind::Let(NamedVariableRef(ty, name, meta), mutable, expression) => {
                 let value = expression.codegen(scope, &state)?.unwrap();
 
+                dbg!(&scope.allocator, &meta, &value.1);
                 let alloca = scope
                     .allocate(meta, &value.1)
                     .unwrap()
@@ -1351,6 +1356,14 @@ impl mir::Expression {
                 }
             }
             mir::ExprKind::AssociatedFunctionCall(ty, call) => codegen_function_call(Some(ty), call, scope, state)?,
+            mir::ExprKind::GlobalRef(global_name, ty) => {
+                let global_value = scope.globals.get(global_name).unwrap();
+                let a = Some(StackValue(
+                    StackValueKind::Literal(scope.block.build(Instr::GetGlobal(global_value.clone())).unwrap()),
+                    TypeKind::UserPtr(Box::new(ty.clone())),
+                ));
+                a
+            }
         };
         if let Some(value) = &value {
             value.instr().maybe_location(&mut scope.block, location.clone());

reid/src/codegen/scope.rs

@@ -1,7 +1,7 @@
 use std::{cell::RefCell, collections::HashMap, mem, rc::Rc};
 
 use reid_lib::{
-    builder::{InstructionValue, TypeValue},
+    builder::{GlobalValue, InstructionValue, TypeValue},
     debug_information::{DebugInformation, DebugLocation, DebugScopeValue, DebugTypeValue},
     Block, Context, Function, Instr, Module,
 };
@@ -30,6 +30,7 @@ pub struct Scope<'ctx, 'scope> {
     pub(super) functions: &'scope HashMap<String, ScopeFunctionKind<'ctx>>,
     pub(super) binops: &'scope HashMap<BinopKey, StackBinopDefinition<'ctx>>,
     pub(super) stack_values: HashMap<String, StackValue>,
+    pub(super) globals: &'scope HashMap<String, GlobalValue>,
     pub(super) debug: Option<Debug<'ctx>>,
     pub(super) allocator: Rc<RefCell<Allocator>>,
 }
@@ -51,6 +52,7 @@ impl<'ctx, 'a> Scope<'ctx, 'a> {
             stack_values: self.stack_values.clone(),
             debug: self.debug.clone(),
             allocator: self.allocator.clone(),
+            globals: self.globals,
             binops: self.binops,
         }
     }

reid/src/mir/fmt.rs

@@ -280,6 +280,7 @@ impl Display for ExprKind {
                 write!(f, "::")?;
                 Display::fmt(function_call, f)
             }
+            ExprKind::GlobalRef(global_value, type_kind) => write!(f, "todo globals"),
         }
     }
 }

reid/src/mir/implement.rs

@@ -429,6 +429,7 @@ impl Expression {
                 Err(_) => Ok((ReturnKind::Soft, type_kind.clone())),
             },
             AssociatedFunctionCall(_, fcall) => fcall.return_type(),
+            GlobalRef(_, type_kind) => Ok((ReturnKind::Soft, TypeKind::UserPtr(Box::new(type_kind.clone())))),
         }
     }
 
@@ -448,6 +449,7 @@ impl Expression {
             ExprKind::If(_) => None,
             ExprKind::CastTo(expression, _) => expression.backing_var(),
             ExprKind::AssociatedFunctionCall(..) => None,
+            ExprKind::GlobalRef(..) => None,
         }
     }
 
@@ -493,6 +495,7 @@ impl Expression {
             ExprKind::Deref(_) => None,
             ExprKind::CastTo(expression, _) => expression.num_value()?,
             ExprKind::AssociatedFunctionCall(..) => None,
+            ExprKind::GlobalRef(..) => None,
         })
     }
 }

reid/src/mir/macros.rs

@@ -173,6 +173,7 @@ impl mir::Expression {
             mir::ExprKind::CastTo(expression, _) => {
                 globals.extend(expression.gen_macros(data, state));
             }
+            mir::ExprKind::GlobalRef(..) => {}
         }
         globals
     }
@@ -211,12 +212,17 @@ impl MacroFunction for TestMacro {
             .map(|c| GlobalKind::Literal(Literal::U8(*c)))
             .collect::<Vec<_>>();
 
-        Ok((
-            vec![GlobalValue {
-                name: "sometestglobalvalue".to_owned(),
+        let len = literals.len();
+
+        let global_name = "sometestglobalvalue".to_owned();
+        let global = GlobalValue {
+            name: global_name.clone(),
             kind: GlobalKind::Array(literals),
-            }],
-            mir::ExprKind::Literal(mir::Literal::Vague(mir::VagueLiteral::Number(5))),
+        };
+
+        Ok((
+            vec![global.clone()],
+            mir::ExprKind::GlobalRef(global_name, TypeKind::U8),
         ))
     }
 }

reid/src/mir/mod.rs

@@ -271,6 +271,7 @@ pub enum ExprKind {
     Borrow(Box<Expression>, bool),
     Deref(Box<Expression>),
     CastTo(Box<Expression>, TypeKind),
+    GlobalRef(String, TypeKind),
 }
 
 #[derive(Debug, Clone)]
@@ -427,13 +428,13 @@ pub struct Module {
     pub is_main: bool,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct GlobalValue {
     pub name: String,
     pub kind: GlobalKind,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum GlobalKind {
     Literal(Literal),
     Array(Vec<GlobalKind>),

reid/src/mir/pass.rs

@@ -615,6 +615,7 @@ impl Expression {
             ExprKind::Borrow(expression, _) => expression.pass(pass, state, scope, mod_id)?,
             ExprKind::Deref(expression) => expression.pass(pass, state, scope, mod_id)?,
             ExprKind::CastTo(expression, _) => expression.pass(pass, state, scope, mod_id)?,
+            ExprKind::GlobalRef(..) => {}
         }
         Ok(())
     }

reid/src/mir/typecheck/typecheck.rs

@@ -767,6 +767,10 @@ impl Expression {
                     Ok(function_call.return_type.clone().resolve_ref(typerefs))
                 }
             }
+            ExprKind::GlobalRef(global_value, type_kind) => Ok(self
+                .return_type(typerefs, state.scope.module_id.unwrap())
+                .map(|r| r.1)
+                .unwrap()),
         }
     }
 }

reid/src/mir/typecheck/typeinference.rs

@@ -660,6 +660,10 @@ impl Expression {
                 // Provide function return type
                 Ok(type_refs.from_type(&fn_call.ret).unwrap())
             }
+            ExprKind::GlobalRef(global_value, type_kind) => Ok(self
+                .return_type(type_refs.types, state.scope.module_id.unwrap())
+                .map(|r| type_refs.from_type(&r.1).unwrap())
+                .unwrap()),
         }
     }