More stuff compiles

Cargo.lock

@@ -111,6 +111,7 @@ dependencies = [
  "bitflags",
  "boxcar",
  "derive_more",
+ "fxhash",
  "half",
  "leaf_allocators",
  "scc",
@@ -121,6 +122,8 @@ name = "leaf_compiler"
 version = "0.1.0"
 dependencies = [
  "arcstr",
+ "derive_more",
+ "fxhash",
  "leaf_allocators",
  "leaf_assembly",
  "leaf_parser",
@@ -133,6 +136,8 @@ dependencies = [
  "fxhash",
  "leaf_allocators",
  "leaf_assembly",
+ "leaf_compiler",
+ "leaf_parser",
  "scc",
  "smallvec",
 ]

allocators/src/lib.rs

@@ -37,10 +37,24 @@ impl<'l> dyn Allocator + 'l {
 			&mut *(self.alloc_unsafe(data, layout, drop) as *mut T)
 		}
 	}
+
+	pub fn alloc_str(&'l self, str: &str) -> &'l str {
+		unsafe {
+			let ptr =
+				self.alloc_unsafe(str.as_ptr(), Layout::array::<u8>(str.len()).unwrap(), None);
+			let slice = std::slice::from_raw_parts_mut(ptr, str.len());
+			slice.copy_from_slice(str.as_bytes());
+			std::str::from_utf8_unchecked(slice)
+		}
+	}
 }
 
 impl<'l> dyn SyncAllocator + 'l {
 	pub fn alloc<T: Send>(&'l self, value: T) -> &'l mut T {
 		<dyn Allocator>::alloc(self, value)
 	}
+
+	pub fn alloc_str(&'l self, value: &str) -> &'l str {
+		<dyn Allocator>::alloc_str(self, value)
+	}
 }

assembly/Cargo.toml

@@ -11,3 +11,4 @@ half = "2.7.1"
 scc = "3.3.7"
 
 leaf_allocators = { path = "../allocators" }
+fxhash = "0.2.1"

assembly/src/assembly.rs

@@ -1,11 +1,12 @@
 use crate::{
 	functions::Function,
 	types::derivations::{FuncT, TypeDerivations},
-	values::AnyConst,
+	values::Const,
 };
 use derive_more::Debug;
+use fxhash::FxBuildHasher;
 use leaf_allocators::SyncAllocator;
-use scc::{HashMap, HashSet};
+use scc::HashMap;
 use std::{borrow::Cow, hash::Hash, sync::OnceLock};
 
 #[derive(derive_more::Debug, Default, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
@@ -28,6 +29,7 @@ pub type Ctx<'l> = &'l Context<'l>;
 pub struct Context<'l> {
 	pub(crate) alloc: &'l dyn SyncAllocator,
 	pub(crate) derivations: TypeDerivations<'l>,
+	strings: HashMap<&'l str, &'l str, FxBuildHasher>,
 	assemblies: HashMap<AssemblyIdentifier, &'l Assembly<'l>>,
 }
 
@@ -49,6 +51,7 @@ impl<'l> Context<'l> {
 	pub fn new(alloc: &'l dyn SyncAllocator) -> &'l Self {
 		alloc.alloc(Self {
 			alloc,
+			strings: HashMap::default(),
 			derivations: TypeDerivations::new(alloc),
 			assemblies: Default::default(),
 		})
@@ -64,6 +67,15 @@ impl<'l> Context<'l> {
 			.entry_sync(ident.clone())
 			.or_insert_with(|| Assembly::new(self, ident))
 	}
+
+	pub fn intern_str(&'l self, str: &str) -> &'l str {
+		if let Some(value) = self.strings.get_sync(str) {
+			return (*value).into();
+		}
+		let str = self.alloc.alloc_str(str);
+		let _ = self.strings.insert_sync(str, str);
+		str
+	}
 }
 
 #[derive(Debug)]
@@ -71,12 +83,7 @@ pub struct Assembly<'l> {
 	#[debug(skip)]
 	ctx: &'l Context<'l>,
 	ident: AssemblyIdentifier,
-	#[debug("{:#?}", {
-		let mut c = vec![];
-		constants.iter_sync(|k| {c.push(*k); true});
-		c
-	})]
-	constants: HashSet<AnyConst<'l>>,
+	functions: boxcar::Vec<&'l Function<'l>>,
 }
 
 impl Eq for Assembly<'_> {}
@@ -98,7 +105,7 @@ impl<'l> Assembly<'l> {
 		let assembly = ctx.alloc.alloc(Self {
 			ctx,
 			ident,
-			constants: HashSet::new(),
+			functions: boxcar::vec![],
 		});
 		assembly
 	}
@@ -114,9 +121,19 @@ impl<'l> Assembly<'l> {
 			body: OnceLock::new(),
 			declaring_assembly: self,
 		});
-		self.constants
-			.insert_sync(AnyConst::Function(func))
-			.unwrap();
+		self.functions.push(func);
 		func
 	}
+
+	pub fn find_function(
+		&'l self,
+		filter: impl Fn(&'l Function<'l>) -> bool,
+	) -> Option<&'l Function<'l>> {
+		for (_, func) in self.functions.iter() {
+			if filter(func) {
+				return Some(func);
+			}
+		}
+		None
+	}
 }

assembly/src/functions/ir.rs

@@ -59,7 +59,8 @@ impl<'l> Instruction<'l> {
 
 	pub fn value_flags(&self) -> ValueFlags {
 		match self.variant {
-			_ => todo!(),
+			InstructionVariant::StackAlloc(_) => ValueFlags::LValue,
+			_ => ValueFlags::empty(),
 		}
 	}
 
@@ -73,8 +74,11 @@ impl<'l> Instruction<'l> {
 				_ => unreachable!(),
 			},
 			InstructionVariant::IAdd(a, _) => a.ty(),
+			InstructionVariant::IMul(a, _) => a.ty(),
 			InstructionVariant::FAdd(a, _) => a.ty(),
+			InstructionVariant::FMul(a, _) => a.ty(),
 			InstructionVariant::ICmp(_, _, _) => Type::Bool,
+			InstructionVariant::Call(f, _) => f.ty.ret_t,
 			_ => todo!("{self:?}"),
 		}
 	}
@@ -98,7 +102,9 @@ pub enum InstructionVariant<'l> {
 	Store(Value<'l>, Value<'l>),
 
 	IAdd(Value<'l>, Value<'l>),
+	IMul(Value<'l>, Value<'l>),
 	FAdd(Value<'l>, Value<'l>),
+	FMul(Value<'l>, Value<'l>),
 
 	ICmp(Value<'l>, Value<'l>, Cmp),
 	FCmp(Value<'l>, Value<'l>, Cmp),
@@ -132,11 +138,17 @@ impl std::fmt::Debug for InstructionVariant<'_> {
 			Self::Load(v) => write!(f, "load {v}"),
 			Self::Store(t, v) => write!(f, "store {t}, {v}"),
 			Self::IAdd(a, b) => write!(f, "iadd {a}, {b}"),
+			Self::IMul(a, b) => write!(f, "imul {a}, {b}"),
 			Self::FAdd(a, b) => write!(f, "fadd {a}, {b}"),
+			Self::FMul(a, b) => write!(f, "fmul {a}, {b}"),
 			Self::ICmp(a, b, c) => write!(f, "icmp {c:?} {a}, {b}"),
 			Self::FCmp(a, b, c) => write!(f, "fcmp {c:?} {a}, {b}"),
 			Self::Call(func, args) => {
-				write!(f, "call {:#?}(", *func as *const Function)?;
+				write!(
+					f,
+					"call {}(",
+					func.name.get().unwrap_or(&"<anonymous function>".into())
+				)?;
 				let mut separator = "";
 				for arg in args {
 					write!(f, "{separator}{arg}")?;
@@ -252,6 +264,22 @@ impl<'l> BlockBuilder<'l> {
 		}
 	}
 
+	pub fn mul(&mut self, a: Value<'l>, b: Value<'l>) -> BlockBuilderResult<'l, Value<'l>> {
+		let [a_ty, b_ty] = [a.ty(), b.ty()];
+
+		match (a_ty, b_ty) {
+			(Type::Int(a_ty), Type::Int(b_ty)) if a_ty == b_ty => {
+				let inst = self.push_instruction(InstructionVariant::IMul(a, b))?;
+				Ok(inst.into())
+			}
+			(Type::Float(a_ty), Type::Float(b_ty)) if a_ty == b_ty => {
+				let inst = self.push_instruction(InstructionVariant::FMul(a, b))?;
+				Ok(inst.into())
+			}
+			_ => Err(format!("Cannot add values of type `{a_ty}` and `b_ty`.").into()),
+		}
+	}
+
 	pub fn cmp(
 		&mut self,
 		a: Value<'l>,
@@ -358,7 +386,7 @@ impl<'l> BlockBuilder<'l> {
 
 	pub fn build(self) -> BlockBuilderResult<'l, &'l Block<'l>> {
 		if !self.has_termination() {
-			return Err(format!("Block #{} has not termination.", self.block.id).into());
+			return Err(format!("Block #{} has no termination.", self.block.id).into());
 		}
 		self.block.instructions.set(self.instructions).unwrap();
 		Ok(self.block)
@@ -398,15 +426,15 @@ impl<'l> FunctionBodyBuilder<'l> {
 		builder
 	}
 
-	pub fn current_block(&self) -> &'l Block<'l> {
-		self.blocks[self.current_block].block
+	pub fn current_block(&self) -> &BlockBuilder<'l> {
+		&self.blocks[self.current_block]
 	}
 
 	pub fn set_current_block(&mut self, block: &'l Block<'l>) -> Option<&'l Block<'l>> {
 		match std::ptr::eq(block.func, self.func) {
 			false => None,
 			true => {
-				let current = self.current_block();
+				let current = &self.blocks[self.current_block].block;
 				self.current_block = block.id as usize;
 				Some(current)
 			}
@@ -466,6 +494,10 @@ impl<'l> FunctionBodyBuilder<'l> {
 		self.current_builder().add(a, b)
 	}
 
+	pub fn mul(&mut self, a: Value<'l>, b: Value<'l>) -> BlockBuilderResult<'l, Value<'l>> {
+		self.current_builder().mul(a, b)
+	}
+
 	pub fn cmp(
 		&mut self,
 		a: Value<'l>,

assembly/src/functions/mod.rs

@@ -62,6 +62,7 @@ impl FmtDebug for Function<'_> {
 
 		f.debug_struct("Function")
 			.field("ty", &format_args!("{}", self.ty))
+			.field("name", &self.name.get())
 			.field("body", body)
 			.finish_non_exhaustive()
 	}

assembly/src/values/constants.rs

@@ -1,4 +1,4 @@
-use crate::{functions::Function, types::Type};
+use crate::{functions::Function, types::Type, values::ValueFlags};
 use derive_more::{Debug, *};
 use half::f16;
 use std::hash::Hash;
@@ -9,13 +9,17 @@ pub enum Int {
 	I16(i16),
 	I32(i32),
 	I64(i64),
+	#[from]
 	I128(i128),
+	ISize(i128),
 
 	U8(u8),
 	U16(u16),
 	U32(u32),
 	U64(u64),
+	#[from]
 	U128(u128),
+	USize(u128),
 }
 
 #[derive(Debug, Display, Clone, Copy, From, TryInto, PartialEq)]
@@ -90,15 +94,25 @@ impl<'l> AnyConst<'l> {
 			Self::Int(Int::I32(_)) => Type::I32,
 			Self::Int(Int::I64(_)) => Type::I64,
 			Self::Int(Int::I128(_)) => Type::I128,
+			Self::Int(Int::ISize(_)) => Type::ISIZE,
 			Self::Int(Int::U8(_)) => Type::U8,
 			Self::Int(Int::U16(_)) => Type::U16,
 			Self::Int(Int::U32(_)) => Type::U32,
 			Self::Int(Int::U64(_)) => Type::U64,
 			Self::Int(Int::U128(_)) => Type::U128,
+			Self::Int(Int::USize(_)) => Type::USIZE,
 			Self::Float(Float::F16(_)) => Type::F16,
 			Self::Float(Float::F32(_)) => Type::F32,
 			Self::Float(Float::F64(_)) => Type::F64,
 			_ => todo!("{self:?}"),
 		}
 	}
+
+	pub fn flags(&self) -> super::ValueFlags {
+		match self {
+			AnyConst::Function(function) => ValueFlags::Function,
+			AnyConst::Type(_) => ValueFlags::Type,
+			_ => ValueFlags::Const,
+		}
+	}
 }

assembly/src/values/mod.rs

@@ -1,4 +1,7 @@
-use crate::{functions::ir::Instruction, types::Type};
+use crate::{
+	functions::{Function, ir::Instruction},
+	types::Type,
+};
 use bitflags::bitflags;
 use derive_more::{Debug, Display, *};
 use std::hash::Hash;
@@ -11,6 +14,7 @@ bitflags! {
 	pub struct ValueFlags: u16 {
 		const Mutable	= 0b00000000_00000001;
 		const Volatile	= 0b00000000_00000010;
+		const LValue	= 0b00000000_00000100;
 		const Const		= 0b00000001_00000000;
 		const ConstOnly	= 0b00000011_00000000;
 		const Type		= 0b00000111_00000000;
@@ -20,10 +24,15 @@ bitflags! {
 
 #[derive(Debug, Display, Clone, Copy, From, TryInto, PartialEq, Eq, Hash)]
 pub enum Value<'l> {
+	Uninit,
 	#[display("{_0}")]
 	Constant(AnyConst<'l>),
 	#[display("{_0}")]
 	Instruction(&'l Instruction<'l>),
+
+	#[debug("${_0}")]
+	#[display("${_0}")]
+	Parameter(usize, &'l Function<'l>),
 }
 
 impl From<Int> for Value<'_> {
@@ -37,6 +46,17 @@ impl<'l> Value<'l> {
 		match self {
 			Value::Constant(v) => v.ty(),
 			Value::Instruction(v) => v.value_ty(),
+			Value::Parameter(i, f) => f.ty.par_t[*i],
+			Value::Uninit => unreachable!(),
+		}
+	}
+
+	pub fn flags(&self) -> ValueFlags {
+		match self {
+			Value::Instruction(instruction) => instruction.value_flags(),
+			Value::Parameter(_, _) => ValueFlags::empty(),
+			Value::Constant(c) => c.flags(),
+			_ => todo!("{self:?}"),
 		}
 	}
 }

compiler/Cargo.toml

@@ -8,3 +8,5 @@ leaf_parser = { path = "../parser" }
 leaf_assembly = { path = "../assembly" }
 leaf_allocators = { path = "../allocators" }
 arcstr = "1.2.0"
+derive_more = { version = "2.0.1", features = ["deref", "deref_mut", "debug", "display", "try_from", "from", "try_into", "into"] }
+fxhash = "0.2.1"

compiler/src/error.rs

@@ -1,3 +1,4 @@
+use derive_more::Debug;
 use leaf_parser::{LineCol, ParseError};
 use std::ops::Range;
 
@@ -8,10 +9,14 @@ pub enum Kind {
 	Unknown = 0x0000,
 
 	Parsing = 0x0100,
+	InvalidInteger = 0x0101,
 
 	SymbolNotFound = 0x0200,
 	UninitializedSymbol = 0x0201,
 	NotAType = 0x0202,
+	NotAFunction = 0x0205,
+	InvalidIntegerType = 0x0203,
+	InvalidType = 0x0204,
 
 	FunctionCompilationFailed = 0x0301,
 }
@@ -20,10 +25,12 @@ pub enum Kind {
 pub enum Location {
 	None,
 	Range {
+		#[debug("{:?}", file.file)]
 		file: SourceFile,
 		range: Range<usize>,
 	},
 	Position {
+		#[debug("{:?}", file.file)]
 		file: SourceFile,
 		position: LineCol,
 	},

compiler/src/lib.rs

@@ -3,11 +3,11 @@ use arcstr::literal_substr;
 use leaf_allocators::SyncAllocator;
 use leaf_assembly::{
 	assembly::{Assembly, AssemblyIdentifier, Context},
-	types::{FloatT, IntT, Type},
+	types::Type,
 	values::{AnyConst, Value},
 };
 use leaf_parser::SourceCode;
-use std::{collections::HashMap, sync::Arc, u32};
+use std::{ops::Deref, sync::Arc};
 
 mod error;
 mod scope;
@@ -19,6 +19,14 @@ pub struct CompilationContext<'l> {
 	alloc: &'l dyn SyncAllocator,
 }
 
+impl<'l> Deref for CompilationContext<'l> {
+	type Target = Context<'l>;
+
+	fn deref(&self) -> &Self::Target {
+		self.ctx
+	}
+}
+
 impl<'l> CompilationContext<'l> {
 	pub fn new(alloc: &'l dyn SyncAllocator) -> Self {
 		Self {
@@ -56,6 +64,7 @@ impl<'l> CompilationContext<'l> {
 							scope.insert(
 								literal_substr!($id),
 								Value::Constant(AnyConst::Type($ty.into())),
+								false,
 							);
 						)*
 				    };

compiler/src/main.rs

@@ -19,7 +19,7 @@ fn main() {
 			file: PathBuf::from("../test.leaf"),
 		})],
 	) {
-		println!("{}", err.message);
+		println!("{:#?}", err);
 	} else {
 		println!("{:#?}", context.get_assembly(&ident));
 	}

compiler/src/scope.rs

@@ -1,22 +1,38 @@
 use arcstr::Substr;
 use leaf_assembly::{
 	assembly::Assembly,
-	types::Type,
-	values::{AnyConst, Value},
+	functions::{
+		Function,
+		ir::{Cmp, FunctionBodyBuilder},
+	},
+	types::{Type, derivations::PtrT},
+	values::{AnyConst, Int, Value, ValueFlags},
 };
 use leaf_parser::{
 	SourceCode,
-	ast::{self, ConstDecl, Expr, Ident},
+	ast::{self, BinaryExpr, BinaryOp, ConstDecl, Expr, Ident, NamePattern, While},
 };
 use std::{collections::HashMap, sync::Arc};
 
 use crate::error::*;
 
+#[derive(Default)]
+struct ExpressionContext<'l, 'r> {
+	decl_names: Option<&'r NamePattern>,
+	builder: Option<&'r mut FunctionBodyBuilder<'l>>,
+}
+
+#[derive(Clone)]
+struct Variable<'l> {
+	value: Value<'l>,
+	mutable: bool,
+}
+
 #[derive(Clone)]
 pub struct Scope<'l> {
 	assembly: &'l Assembly<'l>,
 	source: Arc<SourceCode>,
-	values: HashMap<Substr, Option<Value<'l>>>,
+	values: HashMap<Substr, Variable<'l>>,
 }
 
 impl<'l> Scope<'l> {
@@ -28,26 +44,49 @@ impl<'l> Scope<'l> {
 		}
 	}
 
-	pub fn insert(&mut self, name: Substr, value: Value<'l>) {
-		self.values.insert(name, Some(value));
+	pub fn insert(&mut self, name: Substr, value: Value<'l>, mutable: bool) {
+		self.values.insert(name, Variable { value, mutable });
 	}
 
 	pub fn declare_constants(&mut self, decl: &[ConstDecl]) {
 		for val in decl {
 			for Ident(name) in val.names.as_slice() {
-				self.values.insert(name.clone(), None);
+				self.values.insert(
+					name.clone(),
+					Variable {
+						value: Value::Uninit,
+						mutable: false,
+					},
+				);
 			}
 		}
 	}
 
 	pub fn define_constants(&mut self, decl: &[ConstDecl]) -> Result<(), CompilationError> {
 		for val in decl {
-			let expr = self.compile_expression(&val.value)?;
+			let expr = self.compile_expression(
+				&val.value,
+				&mut ExpressionContext {
+					decl_names: Some(&val.names),
+					..Default::default()
+				},
+			)?;
+			match &val.names {
+				NamePattern::Single(ident) => {
+					self.values.get_mut(&ident.0).unwrap().value = expr;
+				}
+				NamePattern::Tuple(_) => todo!(),
+				NamePattern::List(_) => todo!(),
+			}
 		}
 		Ok(())
 	}
 
-	pub fn compile_expression(&self, expr: &Expr) -> Result<Value<'l>, CompilationError> {
+	fn compile_expression(
+		&mut self,
+		expr: &Expr,
+		ctx: &mut ExpressionContext<'l, '_>,
+	) -> Result<Value<'l>, CompilationError> {
 		match expr {
 			Expr::Ident(Ident(name)) => match self.values.get(name) {
 				None => Err(CompilationError {
@@ -59,7 +98,10 @@ impl<'l> Scope<'l> {
 					},
 					cause: None,
 				}),
-				Some(None) => Err(CompilationError {
+				Some(Variable {
+					value: Value::Uninit,
+					..
+				}) => Err(CompilationError {
 					kind: Kind::UninitializedSymbol,
 					message: format!("Symbol `{name}` is not initialized at this time."),
 					location: Location::Range {
@@ -68,9 +110,13 @@ impl<'l> Scope<'l> {
 					},
 					cause: None,
 				}),
-				Some(Some(value)) => Ok(*value),
+				Some(Variable { value, .. }) => Ok(*value),
 			},
-			Expr::Func(func) => self.compile_function(func).map_err(|err| CompilationError {
+
+			Expr::Func(func) => self
+				.compile_function(func, ctx)
+				.map(|f| Value::Constant(AnyConst::Function(f)))
+				.map_err(|err| CompilationError {
 					kind: Kind::FunctionCompilationFailed,
 					message: format!("Could not compile function."),
 					location: Location::Range {
@@ -79,21 +125,258 @@ impl<'l> Scope<'l> {
 					},
 					cause: Some(Box::new(err)),
 				}),
+
+			Expr::ConstDecl(decl) => self.compile_decl(&decl.names, &decl.value, false, ctx),
+			Expr::VarDecl(decl) => self.compile_decl(&decl.names, &decl.value, true, ctx),
+
+			Expr::Number(n) => {
+				macro_rules! parse_number {
+					($ty: ty, $id: ident) => {
+						match n.text.split_at_checked(2) {
+							Some(("0b", value)) => <$ty>::from_str_radix(value, 2),
+							Some(("0x", value)) => <$ty>::from_str_radix(value, 16),
+							_ => <$ty>::from_str_radix(&n.text, 10),
+						}
+						.map(|v| Value::Constant(AnyConst::Int(Int::$id(v))))
+						.map_err(|_| CompilationError {
+							kind: Kind::InvalidInteger,
+							message: format!("`{}` is not a valid integer.", n.text),
+							location: Location::Range {
+								file: self.source.clone(),
+								range: n.text.range(),
+							},
+							cause: None,
+						})
+					};
+				}
+				match n.r#type.as_ref().map(|v| v.as_str()) {
+					None => parse_number!(i128, ISize),
+					Some("i8") => parse_number!(i8, I8),
+					Some("i16") => parse_number!(i16, I16),
+					Some("i32") => parse_number!(i32, I32),
+					Some("i64") => parse_number!(i64, I64),
+					Some("i128") => parse_number!(i128, I128),
+					Some("isize") => parse_number!(i128, ISize),
+					Some("u8") => parse_number!(u8, U8),
+					Some("u16") => parse_number!(u16, U16),
+					Some("u32") => parse_number!(u32, U32),
+					Some("u64") => parse_number!(u64, U64),
+					Some("u128") => parse_number!(u128, U128),
+					Some("usize") => parse_number!(u128, USize),
+					Some(ty) => {
+						return Err(CompilationError {
+							kind: Kind::InvalidIntegerType,
+							message: format!("`{ty}` is not a valid integer type."),
+							location: Location::Range {
+								file: self.source.clone(),
+								range: n.text.range(),
+							},
+							cause: None,
+						});
+					}
+				}
+			}
+
+			Expr::Binary(expr) => {
+				let BinaryExpr {
+					lhs: lhs_expr,
+					rhs: rhs_expr,
+					op,
+				} = &**expr;
+
+				let mut lhs = self.compile_expression(lhs_expr, ctx)?;
+				if lhs.flags().contains(ValueFlags::LValue) && !matches!(op, BinaryOp::Assign(_)) {
+					lhs = ctx.builder.as_mut().unwrap().load(lhs).unwrap();
+				}
+
+				let mut rhs = self.compile_expression(rhs_expr, ctx)?;
+				if rhs.flags().contains(ValueFlags::LValue) {
+					rhs = ctx.builder.as_mut().unwrap().load(rhs).unwrap();
+				}
+
+				let builder = ctx.builder.as_mut().unwrap();
+				match (lhs.ty(), rhs.ty(), op) {
+					(Type::U32, Type::U32, BinaryOp::Add(_)) => Ok(builder.add(lhs, rhs).unwrap()),
+					(Type::U32, Type::U32, BinaryOp::Mul(_)) => Ok(builder.mul(lhs, rhs).unwrap()),
+					(Type::U32, Type::U32, BinaryOp::Lt(_)) => {
+						Ok(builder.cmp(lhs, rhs, Cmp::Lt).unwrap())
+					}
+					(Type::Ptr(PtrT { base, mutable, .. }), ty, BinaryOp::Assign(_)) => {
+						match *base == ty {
+							true => Ok(builder.store(lhs, rhs).unwrap()),
+							false => Err(CompilationError {
+								kind: Kind::InvalidType,
+								message: format!(
+									"Cannot assign a value of type `{ty}` to a value of type `{base}`."
+								),
+								location: Location::Range {
+									file: self.source.clone(),
+									range: rhs_expr.range(),
+								},
+								cause: None,
+							}),
+						}
+					}
+					(a, b, _) => unimplemented!("{a} {op:?} {b} | {lhs:?} {op:?} {rhs:?}"),
+				}
+			}
+
+			Expr::While(expr) => {
+				let While { value, block } = &**expr;
+
+				let mut builder = ctx.builder.as_mut().unwrap();
+				let cond_block = builder.create_block();
+				let exec_block = builder.create_block();
+				let exit_block = builder.create_block();
+
+				builder.jump(cond_block).unwrap();
+				builder.set_current_block(cond_block);
+				let condition = self.compile_expression(value, ctx)?;
+
+				builder = ctx.builder.as_mut().unwrap();
+				builder.branch(condition, exec_block, exit_block).unwrap();
+				builder.set_current_block(exec_block);
+
+				let mut scope = self.clone();
+				let mut ctx = ExpressionContext {
+					builder: Some(builder),
+					..Default::default()
+				};
+
+				let mut last_expr = None;
+				for expr in &block.0 {
+					last_expr = Some(scope.compile_expression(expr, &mut ctx)?);
+				}
+				builder.jump(cond_block).unwrap();
+				builder.set_current_block(exit_block);
+				Ok(last_expr.unwrap_or(Value::Constant(AnyConst::Void)))
+			}
+
+			Expr::Call {
+				func,
+				args: args_exprs,
+			} => {
+				let func = match self.compile_expression(func, ctx)? {
+					Value::Constant(AnyConst::Function(func)) => func,
+					_ => {
+						return Err(CompilationError {
+							kind: Kind::NotAFunction,
+							message: "Value is not a function".into(),
+							location: Location::Range {
+								file: self.source.clone(),
+								range: func.range(),
+							},
+							cause: None,
+						});
+					}
+				};
+				let mut args = Vec::with_capacity(args_exprs.len());
+				for expr in args_exprs {
+					let mut arg = self.compile_expression(expr, ctx)?;
+					if arg.flags().contains(ValueFlags::LValue) {
+						arg = ctx.builder.as_mut().unwrap().load(arg).unwrap();
+					}
+					args.push(arg);
+				}
+				let builder = ctx.builder.as_mut().unwrap();
+				Ok(builder.call(func, args).unwrap())
+			}
+
+			Expr::Type(expr) => match &**expr {
+				ast::Type::Ptr { base, mutable } => match self.compile_expression(base, ctx)? {
+					Value::Constant(AnyConst::Type(ty)) => {
+						Ok(AnyConst::Type(Type::Ptr(ty.make_ptr(*mutable))).into())
+					}
+					_ => todo!(),
+				},
+			},
+
 			_ => todo!("{expr:#?}"),
 		}
 	}
 
-	fn compile_function(&self, func: &ast::Function) -> Result<Value<'l>, CompilationError> {
-		let ret_ty = self.assert_type(self.compile_expression(&func.ret)?)?;
-		let mut par_ty = Vec::with_capacity(func.args.len());
-		for arg in &func.args {
-			let ty = self.assert_type(self.compile_expression(&arg.r#type)?)?;
+	fn compile_function(
+		&mut self,
+		ast: &ast::Function,
+		ctx: &mut ExpressionContext<'l, '_>,
+	) -> Result<&'l Function<'l>, CompilationError> {
+		let ret_ty = match ast.ret.as_ref() {
+			None => Value::Constant(AnyConst::Type(Type::Void)),
+			Some(ty) => self.compile_expression(ty, ctx)?,
+		};
+		let ret_ty = self.assert_type(ret_ty)?;
+		let mut par_ty = Vec::with_capacity(ast.args.len());
+		for arg in &ast.args {
+			let ty = self.compile_expression(&arg.r#type, ctx)?;
+			let ty = self.assert_type(ty)?;
 			par_ty.push(ty);
 		}
+
 		let fn_ty = ret_ty.make_fn(par_ty);
-		Ok(Value::Constant(AnyConst::Function(
-			self.assembly.create_function(fn_ty),
-		)))
+		let func = self.assembly.create_function(fn_ty);
+		if let Some(NamePattern::Single(func_name)) = &ctx.decl_names {
+			func.name.set(func.ctx().intern_str(&func_name.0)).unwrap();
+			if let Some(variable) = self.values.get_mut(func_name.as_str()) {
+				variable.value = Value::Constant(AnyConst::Function(func));
+			}
+		};
+
+		let Some(block) = &ast.block else {
+			return Ok(func);
+		};
+
+		let mut scope = self.clone();
+		for (i, arg) in ast.args.iter().enumerate() {
+			scope.insert(arg.name.0.clone(), Value::Parameter(i, func), false);
+		}
+
+		let mut builder = func.create_body().unwrap();
+		let mut ctx = ExpressionContext {
+			builder: Some(&mut builder),
+			..Default::default()
+		};
+
+		let mut last_expr = None;
+		for expr in &block.0 {
+			last_expr = Some(scope.compile_expression(expr, &mut ctx)?);
+		}
+
+		if !builder.current_block().has_termination() {
+			builder.ret(last_expr).unwrap();
+		}
+
+		builder.build().unwrap();
+
+		Ok(func)
+	}
+
+	fn compile_decl(
+		&mut self,
+		names: &NamePattern,
+		value: &Expr,
+		mutable: bool,
+		ctx: &mut ExpressionContext<'l, '_>,
+	) -> Result<Value<'l>, CompilationError> {
+		let mut sub_ctx = ExpressionContext {
+			decl_names: Some(names),
+			builder: ctx.builder.as_mut().map(|v| &mut **v),
+		};
+		let mut value = self.compile_expression(value, &mut sub_ctx)?;
+		if mutable {
+			let builder = sub_ctx.builder.unwrap();
+			let variable = builder.stack_alloc(value.ty()).unwrap();
+			builder.store(variable, value).unwrap();
+			value = variable;
+		}
+		match names {
+			NamePattern::Single(ident) => {
+				self.values
+					.insert(ident.0.clone(), Variable { value, mutable });
+			}
+			NamePattern::Tuple(_) => todo!(),
+			NamePattern::List(_) => todo!(),
+		}
+		Ok(AnyConst::Void.into())
 	}
 
 	fn assert_type(&self, val: Value<'l>) -> Result<Type<'l>, CompilationError> {

interpreter/Cargo.toml

@@ -7,5 +7,7 @@ edition = "2024"
 fxhash = "0.2.1"
 leaf_allocators = { path = "../allocators" }
 leaf_assembly = { path = "../assembly" }
+leaf_compiler = { path = "../compiler" }
+leaf_parser = { path = "../parser" }
 scc = "3.3.7"
 smallvec = "1.15.1"

interpreter/src/instruction_cache.rs

@@ -6,7 +6,7 @@ use leaf_assembly::{
 		ir::{Cmp, Instruction, InstructionVariant},
 	},
 	types::{IntT, Type},
-	values::{AnyConst, Const, Int, Value},
+	values::{AnyConst, Int, Value},
 };
 use scc::HashMap;
 use std::{alloc::Layout, fmt::Debug, ops::Range, sync::Arc};
@@ -246,7 +246,7 @@ impl<'l> InstructionCacheEntry<'l> {
 								Value::Instruction(i) => {
 									ranges.push(memory_ranges[&i.id()].clone());
 								}
-								_ => todo!("Unimplemented variant `{arg}`."),
+								_ => todo!("Unimplemented variant `{arg:?}`."),
 							}
 						}
 						opcodes.push(OpCode::Call(

interpreter/src/main.rs

@@ -1,66 +1,44 @@
 use leaf_allocators::SyncArenaAllocator;
-use leaf_assembly::assembly::{AssemblyIdentifier, Context, Version};
-use leaf_assembly::functions::ir::Cmp;
-use leaf_assembly::types::Type;
-use leaf_assembly::values::Int;
+use leaf_assembly::assembly::{AssemblyIdentifier, Version};
+use leaf_compiler::CompilationContext;
 use leaf_interpreter::interpreter::{AnyValue, Error, Interpreter, NativeFunction};
+use leaf_parser::SourceCode;
 use std::ffi::CStr;
+use std::path::PathBuf;
+use std::sync::Arc;
 use std::time::{Duration, Instant};
 
 fn main() {
 	let allocator = SyncArenaAllocator::default();
-	let context = Context::new(&allocator);
-	let assembly = context.get_or_create_assembly(AssemblyIdentifier {
+	let context = CompilationContext::new(&allocator);
+	let ident = AssemblyIdentifier {
 		version: Version::default(),
-		name: "test".into(),
-	});
-
-	let puts = assembly.create_function(Type::Void.make_fn([Type::U8.make_ptr(false).into()]));
-
-	let print_u32 = assembly.create_function(Type::Void.make_fn([Type::U32.into()]));
-
-	let random_func = {
-		let func = assembly.create_function(Type::U32.make_fn([]));
-		let mut builder = func.create_body().unwrap();
-
-		let loop_check = builder.create_block();
-		let loop_body = builder.create_block();
-		let loop_end = builder.create_block();
-
-		let var0 = builder.stack_alloc(Type::U32).unwrap();
-		let var1 = builder.stack_alloc(Type::U32).unwrap();
-
-		builder.store(var0, Int::U32(42).into()).unwrap();
-
-		builder.store(var1, Int::U32(0u32).into()).unwrap();
-
-		builder.jump(loop_check).unwrap();
-		builder.set_current_block(loop_check);
-
-		let a = builder.load(var0).unwrap();
-		let b = builder.load(var1).unwrap();
-		let c = builder.add(a, b).unwrap();
-		builder.call(print_u32, vec![c]).unwrap();
-
-		let cond = builder.cmp(c, Int::U32(69u32).into(), Cmp::Lt).unwrap();
-		builder.branch(cond, loop_body, loop_end).unwrap();
-
-		builder.set_current_block(loop_body);
-		let v = builder.load(var1).unwrap();
-		let v = builder.add(v, Int::U32(1u32).into()).unwrap();
-		builder.store(var1, v).unwrap();
-		builder.jump(loop_check).unwrap();
-
-		builder.set_current_block(loop_end);
-		let v = builder.load(var1).unwrap();
-		builder.ret(Some(v)).unwrap();
-
-		let body = builder.build().unwrap();
-		println!("{body:#?}");
-		func
+		name: "interpreter.il".into(),
 	};
+	context
+		.extend(
+			ident.clone(),
+			&[Arc::new(SourceCode {
+				text: std::fs::read_to_string("../test.leaf").unwrap().into(),
+				file: PathBuf::from("../test.leaf"),
+			})],
+		)
+		.unwrap();
 
-	let mut interpreter = Interpreter::new(context);
+	let mut interpreter = Interpreter::new(&context);
+	let assembly = context.get_assembly(&ident).unwrap();
+
+	let puts = assembly
+		.find_function(|f| f.name.get() == Some(&"puts"))
+		.unwrap();
+
+	let print_u32 = assembly
+		.find_function(|f| f.name.get() == Some(&"print_u32"))
+		.unwrap();
+
+	let main = assembly
+		.find_function(|f| f.name.get() == Some(&"main"))
+		.unwrap();
 
 	interpreter.register_function(
 		puts,
@@ -91,7 +69,7 @@ fn main() {
 
 	{
 		let now = Instant::now();
-		let result = interpreter.run(random_func, vec![]);
+		let result = interpreter.run(main, vec![]);
 		let elapsed = now.elapsed();
 		println!("Ret Value: {result:?}");
 		println!("Cold Time: {:?}", elapsed)
@@ -101,7 +79,7 @@ fn main() {
 		let mut duration = Duration::default();
 		for _ in 0..LOOPS {
 			let now = Instant::now();
-			let _ = interpreter.run(random_func, vec![]);
+			let _ = interpreter.run(main, vec![]);
 			duration += now.elapsed();
 		}
 		println!("Warm Time: {:?}", duration / LOOPS);

parser/src/ast.rs

@@ -1,3 +1,5 @@
+use std::ops::Range;
+
 use arcstr::Substr;
 use derive_more::Deref;
 
@@ -32,6 +34,8 @@ pub enum Expr {
 	Block(Block),
 	#[debug("{_0:?}")]
 	Func(Box<Function>),
+	#[debug("{_0:?}")]
+	Type(Box<Type>),
 
 	#[debug("{_0:?}")]
 	ConstDecl(Box<ConstDecl>),
@@ -39,6 +43,8 @@ pub enum Expr {
 	VarDecl(Box<VarDecl>),
 	#[debug("{_0:?}")]
 	For(Box<For>),
+	#[debug("{_0:?}")]
+	While(Box<While>),
 
 	Call {
 		func: Box<Expr>,
@@ -46,6 +52,14 @@ pub enum Expr {
 	},
 }
 
+impl Expr {
+	pub fn range(&self) -> Range<usize> {
+		match self {
+			_ => todo!(),
+		}
+	}
+}
+
 #[derive(Debug)]
 pub struct BinaryExpr {
 	pub lhs: Expr,
@@ -62,14 +76,23 @@ pub struct IndexingExpr {
 #[rustfmt::skip]
 #[derive(derive_more::Debug)]
 pub enum BinaryOp {
-	#[debug("{_0:?}")] Add(Substr),
-	#[debug("{_0:?}")] Sub(Substr),
-	#[debug("{_0:?}")] Mul(Substr),
-	#[debug("{_0:?}")] Div(Substr),
-	#[debug("{_0:?}")] Mod(Substr),
-	#[debug("{_0:?}")] Dot(Substr),
-	#[debug("{_0:?}")] Range(Substr),
-	#[debug("{_0:?}")] Assign(Substr),
+	#[debug("{_0}")] Add(Substr),
+	#[debug("{_0}")] Sub(Substr),
+	#[debug("{_0}")] Mul(Substr),
+	#[debug("{_0}")] Div(Substr),
+	#[debug("{_0}")] Mod(Substr),
+	#[debug("{_0}")] Dot(Substr),
+	#[debug("{_0}")] Lt(Substr),
+	#[debug("{_0}")] Gt(Substr),
+	#[debug("{_0}")] Le(Substr),
+	#[debug("{_0}")] Ge(Substr),
+	#[debug("{_0}")] Range(Substr),
+	#[debug("{_0}")] Assign(Substr),
+}
+
+#[derive(Debug)]
+pub enum Type {
+	Ptr { base: Expr, mutable: bool },
 }
 
 #[derive(Debug)]
@@ -107,7 +130,7 @@ impl NamePattern {
 pub struct Function {
 	pub text: Substr,
 	pub args: Vec<NameValuePair>,
-	pub ret: Expr,
+	pub ret: Option<Expr>,
 	pub block: Option<Block>,
 }
 
@@ -133,6 +156,12 @@ pub struct For {
 	pub block: Block,
 }
 
+#[derive(Debug)]
+pub struct While {
+	pub value: Expr,
+	pub block: Block,
+}
+
 #[derive(Debug)]
 pub struct CompilationUnit {
 	pub imports: Vec<Import>,

parser/src/parser.rs

@@ -84,14 +84,21 @@ peg::parser! {
 			--
 			lhs:(@) __ op:$("..") __ rhs:@ { Expr::Binary(Box::new(BinaryExpr { lhs, op: BinaryOp::Range(op), rhs })) }
 			--
+			lhs:(@) __ op:$("<") __ rhs:@ { Expr::Binary(Box::new(BinaryExpr { lhs, op: BinaryOp::Lt(op), rhs })) }
+			lhs:(@) __ op:$(">") __ rhs:@ { Expr::Binary(Box::new(BinaryExpr { lhs, op: BinaryOp::Gt(op), rhs })) }
+			lhs:(@) __ op:$("<=") __ rhs:@ { Expr::Binary(Box::new(BinaryExpr { lhs, op: BinaryOp::Le(op), rhs })) }
+			lhs:(@) __ op:$(">=") __ rhs:@ { Expr::Binary(Box::new(BinaryExpr { lhs, op: BinaryOp::Ge(op), rhs })) }
+			--
 			block:block() { Expr::Block(block)}
 			for_loop:for_loop() { Expr::For(Box::new(for_loop))}
+			while_loop:while_loop() { Expr::While(Box::new(while_loop))}
 			func:func() { Expr::Func(Box::new(func))}
 			var_decl:var_decl() { Expr::VarDecl(Box::new(var_decl)) }
 			const_decl:const_decl() { Expr::ConstDecl(Box::new(const_decl)) }
 			"(" __ tuple:(expr() **<2,> ("," __)) __ ")" { Expr::Tuple(tuple) }
 			"[" __ list:(expr() **<0,> ("," __)) __ "]" { Expr::List(list) }
 			"(" __ v:expr() __ ")" { v }
+			"*" __ m:"mut"? __ v:expr() { Expr::Type(Box::new(Type::Ptr { base:v, mutable: m.is_some() })) }
 			v:string() { Expr::String(v) }
 			v:number() { Expr::Number(v) }
 			v:ident() { Expr::Ident(v) }
@@ -101,7 +108,7 @@ peg::parser! {
 			= "{" __ exprs:(i:expr() statement_separator() {i})* __ "}" { Block(exprs) }
 
 		rule func() -> Function
-			= s:position!() t:$"fn" __ "(" __ args:name_value_pairs() __ ")" __ ret:expr() __ block:block()? e:position!()
+			= s:position!() t:$"fn" __ "(" __ args:name_value_pairs() __ ")" __ ret:("->" __ e:expr() {e})? __ block:block()? e:position!()
 			{ Function { args, ret, block, text: t.parent().substr(s..e), } }
 
 		rule name_value_pair() -> NameValuePair
@@ -130,6 +137,10 @@ peg::parser! {
 			"for" _ names:name_pattern() _ "in" _ value:expr() _ block:block()
 			{ For { names, value, block } }
 
+		rule while_loop() -> While =
+			"while" _ value:expr() _ block:block()
+			{ While { value, block } }
+
 		pub rule compilation_unit() -> CompilationUnit =
 			__ imports:(i:import() statement_separator() {i})*
 			__ decls:(d:const_decl() statement_separator() {d})*

rust-toolchain.toml

@@ -1,4 +1,3 @@
 [toolchain]
-channel = "1.91.0"
 components = ["clippy", "rustfmt"]
 profile = "default"

test.leaf

@@ -1,20 +1,14 @@
-import leaf.reflection.comptime
+puts :: fn(v: *u8) -> i32;
+print_u32 :: fn(v: u32);
 
-add :: fn(a: u32, b: u32) u32 {
-	a + b
-}
-
-Vector :: fn(T: type, count: usize) type {
-	NAMES :: ["x", "y", "z", "w"]
-
-	ty := TypeBuilder.struct()
-	for i in 0..count {
-		ty.push(Field {
-			name: NAMES[i],
-			type: T,
-			flags: FieldFlags.Public
-		})
+print_up_to :: fn(max: u32) {
+    i := 0u32
+    while i < max {
+        print_u32(i)
+        i = i + 1u32
     }
-
-	ty.build()
+}
+
+main :: fn() {
+    print_up_to(42u32)
 }