nice

lib/edlang_driver/src/lib.rs

@@ -85,7 +85,7 @@ pub fn main() -> Result<(), Box<dyn Error>> {
         return Ok(());
     }
 
-    let module_irs = lower_modules(&[module.clone()]);
+    let (_symbols, module_irs) = lower_modules(&[module.clone()]);
 
     if args.ir {
         println!("{:#?}", module_irs);

lib/edlang_ir/src/lib.rs

@@ -9,14 +9,14 @@ pub mod scalar_int;
 
 #[derive(Debug, Clone)]
 pub struct ModuleBody {
-    pub module_id: usize,
+    pub module_id: DefId,
     pub functions: BTreeMap<DefId, Body>,
     pub modules: BTreeMap<DefId, Self>,
     pub span: Span,
 }
 
 /// Definition id.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
 pub struct DefId {
     pub module_id: usize,
     pub id: usize,
@@ -105,6 +105,34 @@ pub enum TypeKind {
     FnDef(DefId, Vec<TypeInfo>), // The vec are generic types, not arg types
 }
 
+impl TypeKind {
+    pub fn get_falsy_value(&self) -> ValueTree {
+        match self {
+            Self::Bool => ValueTree::Leaf(ConstValue::Bool(false)),
+            Self::Char => todo!(),
+            Self::Int(ty) => match ty {
+                IntTy::I8 => ValueTree::Leaf(ConstValue::I8(0)),
+                IntTy::I16 => ValueTree::Leaf(ConstValue::I16(0)),
+                IntTy::I32 => ValueTree::Leaf(ConstValue::I32(0)),
+                IntTy::I64 => ValueTree::Leaf(ConstValue::I64(0)),
+                IntTy::I128 => ValueTree::Leaf(ConstValue::I128(0)),
+                IntTy::Isize => todo!(),
+            },
+            Self::Uint(ty) => match ty {
+                UintTy::U8 => ValueTree::Leaf(ConstValue::U8(0)),
+                UintTy::U16 => ValueTree::Leaf(ConstValue::U16(0)),
+                UintTy::U32 => ValueTree::Leaf(ConstValue::U32(0)),
+                UintTy::U64 => ValueTree::Leaf(ConstValue::U64(0)),
+                UintTy::U128 => ValueTree::Leaf(ConstValue::U128(0)),
+                UintTy::Usize => todo!(),
+            },
+            Self::Float(_) => todo!(),
+            TypeKind::Unit => unreachable!(),
+            TypeKind::FnDef(_, _) => unreachable!(),
+        }
+    }
+}
+
 #[derive(Debug, Clone)]
 pub enum IntTy {
     I128,
@@ -153,7 +181,9 @@ pub enum ValueTree {
 #[derive(Debug, Clone)]
 pub enum RValue {
     Use(Operand),
+    Ref(bool, Operand),
     BinOp(BinOp, Operand, Operand),
+    LogicOp(LogicalOp, Operand, Operand),
     UnOp(UnOp, Operand),
 }
 
@@ -256,6 +286,13 @@ pub enum BinOp {
     Offset,
 }
 
+// Diferent than BinOp because operands needs to be lazily evaluated.
+#[derive(Debug, Clone, Copy)]
+pub enum LogicalOp {
+    And,
+    Or,
+}
+
 #[derive(Debug, Clone, Copy)]
 pub enum UnOp {
     Not,

lib/edlang_lowering/src/common.rs

@@ -21,6 +21,13 @@ impl IdGenerator {
         self.current_id
     }
 
+    pub fn module_defid(&self) -> DefId {
+        DefId {
+            module_id: self.module_id,
+            id: 0,
+        }
+    }
+
     pub fn next_defid(&mut self) -> DefId {
         let id = self.next_id();
 
@@ -29,19 +36,27 @@ impl IdGenerator {
             id,
         }
     }
+
+    pub fn next_module_defid(&mut self) -> DefId {
+        self.module_id += 1;
+        self.current_id = 0;
+
+        self.module_defid()
+    }
 }
 
 #[derive(Debug, Clone, Default)]
 pub struct BuildCtx {
-    pub module_name_to_id: HashMap<String, usize>,
+    pub module_name_to_id: HashMap<String, DefId>,
-    pub modules: HashMap<usize, ModuleCtx>,
+    pub modules: HashMap<DefId, ModuleCtx>,
     pub functions: HashMap<DefId, Body>,
-    pub module_id_counter: usize,
+    pub gen: IdGenerator,
+    pub symbol_names: HashMap<DefId, String>,
 }
 
 #[derive(Debug, Clone, Default)]
 pub struct ModuleCtx {
-    pub id: usize,
+    pub id: DefId,
     pub func_name_to_id: HashMap<String, DefId>,
     pub functions: HashMap<DefId, (Vec<TypeInfo>, TypeInfo)>,
     pub gen: IdGenerator,
@@ -49,7 +64,7 @@ pub struct ModuleCtx {
 
 #[derive(Debug, Clone)]
 pub struct BodyBuilder {
-    pub local_module: usize,
+    pub local_module: DefId,
     pub body: Body,
     pub statements: Vec<Statement>,
     pub locals: HashMap<String, usize>,

lib/edlang_lowering/src/lib.rs

@@ -3,17 +3,29 @@ use std::collections::HashMap;
 use common::{BodyBuilder, BuildCtx, IdGenerator, ModuleCtx};
 use edlang_ast as ast;
 use edlang_ir as ir;
-use ir::{ConstData, ConstKind, Local, Operand, Place, Statement, Terminator, TypeInfo};
+use ir::{ConstData, ConstKind, DefId, Local, Operand, Place, Statement, Terminator, TypeInfo};
 
 mod common;
 
-pub fn lower_modules(modules: &[ast::Module]) -> Vec<ir::ModuleBody> {
+pub fn lower_modules(modules: &[ast::Module]) -> (HashMap<DefId, String>, Vec<ir::ModuleBody>) {
     let mut ctx = BuildCtx::default();
 
     for m in modules {
+        let module_id = ctx.gen.module_defid();
         ctx.module_name_to_id
-            .insert(m.name.name.clone(), ctx.module_id_counter);
+            .insert(m.name.name.clone(), ctx.gen.module_defid());
-        ctx.module_id_counter += 1;
+        ctx.symbol_names.insert(module_id, m.name.name.clone());
+
+        ctx.modules.insert(
+            module_id,
+            ModuleCtx {
+                id: module_id,
+                gen: IdGenerator::new(module_id.module_id),
+                ..Default::default()
+            },
+        );
+
+        ctx.gen.next_module_defid();
     }
 
     let mut lowered_modules = Vec::with_capacity(modules.len());
@@ -26,7 +38,7 @@ pub fn lower_modules(modules: &[ast::Module]) -> Vec<ir::ModuleBody> {
         lowered_modules.push(ir);
     }
 
-    lowered_modules
+    (ctx.symbol_names, lowered_modules)
 }
 
 fn lower_module(mut ctx: BuildCtx, module: &ast::Module) -> (BuildCtx, ir::ModuleBody) {
@@ -38,19 +50,18 @@ fn lower_module(mut ctx: BuildCtx, module: &ast::Module) -> (BuildCtx, ir::Modul
         span: module.span,
     };
 
-    let mut module_ctx = ModuleCtx {
-        id: body.module_id,
-        gen: IdGenerator::new(body.module_id),
-        ..Default::default()
-    };
-
     for stmt in &module.contents {
         match stmt {
             ast::ModuleStatement::Function(func) => {
+                let next_id = {
+                    let module_ctx = ctx.modules.get_mut(&module_id).unwrap();
                     let next_id = module_ctx.gen.next_defid();
                     module_ctx
                         .func_name_to_id
                         .insert(func.name.name.clone(), next_id);
+                    ctx.symbol_names.insert(next_id, func.name.name.clone());
+                    next_id
+                };
 
                 let mut args = Vec::new();
                 let ret_type;
@@ -69,18 +80,15 @@ fn lower_module(mut ctx: BuildCtx, module: &ast::Module) -> (BuildCtx, ir::Modul
                     args.push(ty);
                 }
 
+                let module_ctx = ctx.modules.get_mut(&module_id).unwrap();
                 module_ctx.functions.insert(next_id, (args, ret_type));
             }
             ast::ModuleStatement::Constant(_) => todo!(),
             ast::ModuleStatement::Struct(_) => todo!(),
-            ast::ModuleStatement::Module(_) => todo!(),
+            ast::ModuleStatement::Module(_) => {}
         }
     }
 
-    ctx.module_name_to_id
-        .insert(module.name.name.clone(), body.module_id);
-    ctx.modules.insert(body.module_id, module_ctx);
-
     for stmt in &module.contents {
         match stmt {
             ast::ModuleStatement::Function(func) => {
@@ -100,7 +108,7 @@ fn lower_module(mut ctx: BuildCtx, module: &ast::Module) -> (BuildCtx, ir::Modul
 fn lower_function(
     mut ctx: BuildCtx,
     func: &ast::Function,
-    module_id: usize,
+    module_id: DefId,
 ) -> (ir::Body, BuildCtx) {
     let def_id = *ctx
         .modules
@@ -226,7 +234,130 @@ fn lower_expr(
         ast::Expression::Value(info) => ir::RValue::Use(lower_value(builder, info, type_hint)),
         ast::Expression::FnCall(info) => ir::RValue::Use(lower_fn_call(builder, info)),
         ast::Expression::Unary(_, _) => todo!(),
-        ast::Expression::Binary(_, _, _) => todo!(),
+        ast::Expression::Binary(lhs, op, rhs) => {
+            lower_binary_expr(builder, lhs, op, rhs, type_hint)
+        }
+    }
+}
+
+fn lower_binary_expr(
+    builder: &mut BodyBuilder,
+    lhs: &ast::Expression,
+    op: &ast::BinaryOp,
+    rhs: &ast::Expression,
+    type_hint: Option<&TypeInfo>,
+) -> ir::RValue {
+    let expr_type = type_hint.expect("type hint needed");
+    let lhs = {
+        let rvalue = lower_expr(builder, lhs, type_hint);
+        let local = builder.add_local(Local {
+            mutable: false,
+            span: None,
+            ty: expr_type.clone(),
+            kind: ir::LocalKind::Temp,
+        });
+
+        builder.statements.push(Statement {
+            span: None,
+            kind: ir::StatementKind::StorageLive(local),
+        });
+
+        let place = Place {
+            local,
+            projection: Default::default(),
+        };
+
+        builder.statements.push(Statement {
+            span: None,
+            kind: ir::StatementKind::Assign(place.clone(), rvalue),
+        });
+
+        place
+    };
+    let rhs = {
+        let rvalue = lower_expr(builder, rhs, type_hint);
+        let local = builder.add_local(Local {
+            mutable: false,
+            span: None,
+            ty: expr_type.clone(),
+            kind: ir::LocalKind::Temp,
+        });
+
+        builder.statements.push(Statement {
+            span: None,
+            kind: ir::StatementKind::StorageLive(local),
+        });
+
+        let place = Place {
+            local,
+            projection: Default::default(),
+        };
+
+        builder.statements.push(Statement {
+            span: None,
+            kind: ir::StatementKind::Assign(place.clone(), rvalue),
+        });
+
+        place
+    };
+
+    match op {
+        ast::BinaryOp::Arith(op, _) => match op {
+            ast::ArithOp::Add => {
+                ir::RValue::BinOp(ir::BinOp::Add, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::ArithOp::Sub => {
+                ir::RValue::BinOp(ir::BinOp::Sub, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::ArithOp::Mul => {
+                ir::RValue::BinOp(ir::BinOp::Mul, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::ArithOp::Div => {
+                ir::RValue::BinOp(ir::BinOp::Div, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::ArithOp::Mod => {
+                ir::RValue::BinOp(ir::BinOp::Rem, Operand::Move(lhs), Operand::Move(rhs))
+            }
+        },
+        ast::BinaryOp::Logic(op, _) => match op {
+            ast::LogicOp::And => {
+                ir::RValue::LogicOp(ir::LogicalOp::And, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::LogicOp::Or => {
+                ir::RValue::LogicOp(ir::LogicalOp::Or, Operand::Move(lhs), Operand::Move(rhs))
+            }
+        },
+        ast::BinaryOp::Compare(op, _) => match op {
+            ast::CmpOp::Eq => {
+                ir::RValue::BinOp(ir::BinOp::Eq, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::CmpOp::NotEq => {
+                ir::RValue::BinOp(ir::BinOp::Ne, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::CmpOp::Lt => {
+                ir::RValue::BinOp(ir::BinOp::Lt, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::CmpOp::LtEq => {
+                ir::RValue::BinOp(ir::BinOp::Le, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::CmpOp::Gt => {
+                ir::RValue::BinOp(ir::BinOp::Gt, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::CmpOp::GtEq => {
+                ir::RValue::BinOp(ir::BinOp::Ge, Operand::Move(lhs), Operand::Move(rhs))
+            }
+        },
+        ast::BinaryOp::Bitwise(op, _) => match op {
+            ast::BitwiseOp::And => {
+                ir::RValue::BinOp(ir::BinOp::BitAnd, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::BitwiseOp::Or => {
+                ir::RValue::BinOp(ir::BinOp::BitOr, Operand::Move(lhs), Operand::Move(rhs))
+            }
+            ast::BitwiseOp::Xor => {
+                ir::RValue::BinOp(ir::BinOp::BitXor, Operand::Move(lhs), Operand::Move(rhs))
+            }
+        },
     }
 }
 
@@ -446,7 +577,7 @@ fn lower_path(builder: &mut BodyBuilder, info: &ast::PathExpr) -> ir::Place {
     }
 }
 
-pub fn lower_type(ctx: &mut BuildCtx, t: &ast::Type) -> ir::TypeInfo {
+pub fn lower_type(_ctx: &mut BuildCtx, t: &ast::Type) -> ir::TypeInfo {
     match t.name.name.as_str() {
         "()" => ir::TypeInfo {
             span: Some(t.span),