forked from M-Labs/nac3
core/toplevel/builtins: Extract len() into builtin function
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35a7cecc12
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9b988647ed
@ -1,17 +1,20 @@
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use inkwell::types::BasicTypeEnum;
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use inkwell::values::{BasicValue, BasicValueEnum, PointerValue};
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use inkwell::values::{BasicValue, BasicValueEnum, IntValue, PointerValue};
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use inkwell::{FloatPredicate, IntPredicate, OptimizationLevel};
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use itertools::Itertools;
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use crate::codegen::classes::{
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NDArrayValue, ProxyValue, UntypedArrayLikeAccessor, UntypedArrayLikeMutator,
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ArrayLikeValue, NDArrayValue, ProxyValue, RangeValue, TypedArrayLikeAccessor,
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UntypedArrayLikeAccessor, UntypedArrayLikeMutator,
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};
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use crate::codegen::expr::destructure_range;
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use crate::codegen::irrt::calculate_len_for_slice_range;
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use crate::codegen::numpy::ndarray_elementwise_unaryop_impl;
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use crate::codegen::stmt::gen_for_callback_incrementing;
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use crate::codegen::{extern_fns, irrt, llvm_intrinsics, numpy, CodeGenContext, CodeGenerator};
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use crate::toplevel::helper::PrimDef;
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use crate::toplevel::numpy::unpack_ndarray_var_tys;
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use crate::typecheck::typedef::Type;
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use crate::typecheck::typedef::{Type, TypeEnum};
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/// Shorthand for [`unreachable!()`] when a type of argument is not supported.
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///
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@ -23,6 +26,75 @@ fn unsupported_type(ctx: &CodeGenContext<'_, '_>, fn_name: &str, tys: &[Type]) -
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)
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}
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/// Invokes the `len` builtin function.
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pub fn call_len<'ctx, G: CodeGenerator + ?Sized>(
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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n: (Type, BasicValueEnum<'ctx>),
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) -> Result<IntValue<'ctx>, String> {
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let range_ty = ctx.primitives.range;
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let (arg_ty, arg) = n;
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Ok(if ctx.unifier.unioned(arg_ty, range_ty) {
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let arg = RangeValue::from_ptr_val(arg.into_pointer_value(), Some("range"));
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let (start, end, step) = destructure_range(ctx, arg);
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calculate_len_for_slice_range(generator, ctx, start, end, step)
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} else {
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match &*ctx.unifier.get_ty_immutable(arg_ty) {
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TypeEnum::TObj { obj_id, .. } if *obj_id == PrimDef::List.id() => {
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let int32 = ctx.ctx.i32_type();
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let zero = int32.const_zero();
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let len = ctx
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.build_gep_and_load(
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arg.into_pointer_value(),
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&[zero, int32.const_int(1, false)],
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None,
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)
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.into_int_value();
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if len.get_type().get_bit_width() == 32 {
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len
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} else {
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ctx.builder.build_int_truncate(len, int32, "len2i32").unwrap()
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}
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}
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TypeEnum::TObj { obj_id, .. } if *obj_id == PrimDef::NDArray.id() => {
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let llvm_i32 = ctx.ctx.i32_type();
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let llvm_usize = generator.get_size_type(ctx.ctx);
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let arg = NDArrayValue::from_ptr_val(arg.into_pointer_value(), llvm_usize, None);
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let ndims = arg.dim_sizes().size(ctx, generator);
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ctx.make_assert(
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generator,
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ctx.builder
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.build_int_compare(IntPredicate::NE, ndims, llvm_usize.const_zero(), "")
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.unwrap(),
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"0:TypeError",
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"len() of unsized object",
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[None, None, None],
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ctx.current_loc,
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);
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let len = unsafe {
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arg.dim_sizes().get_typed_unchecked(
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ctx,
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generator,
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&llvm_usize.const_zero(),
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None,
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)
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};
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if len.get_type().get_bit_width() == 32 {
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len
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} else {
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ctx.builder.build_int_truncate(len, llvm_i32, "len").unwrap()
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}
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}
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_ => unreachable!(),
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}
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})
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}
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/// Invokes the `int32` builtin function.
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pub fn call_int32<'ctx, G: CodeGenerator + ?Sized>(
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generator: &mut G,
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@ -14,9 +14,7 @@ use strum::IntoEnumIterator;
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use crate::{
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codegen::{
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builtin_fns,
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classes::{ArrayLikeValue, NDArrayValue, ProxyValue, RangeValue, TypedArrayLikeAccessor},
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expr::destructure_range,
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irrt::*,
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classes::{ProxyValue, RangeValue},
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numpy::*,
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stmt::exn_constructor,
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},
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@ -1503,86 +1501,10 @@ impl<'a> BuiltinBuilder<'a> {
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resolver: None,
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codegen_callback: Some(Arc::new(GenCall::new(Box::new(
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move |ctx, _, fun, args, generator| {
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let range_ty = ctx.primitives.range;
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let arg_ty = fun.0.args[0].ty;
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let arg = args[0].1.clone().to_basic_value_enum(ctx, generator, arg_ty)?;
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Ok(if ctx.unifier.unioned(arg_ty, range_ty) {
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let arg = RangeValue::from_ptr_val(arg.into_pointer_value(), Some("range"));
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let (start, end, step) = destructure_range(ctx, arg);
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Some(calculate_len_for_slice_range(generator, ctx, start, end, step).into())
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} else {
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match &*ctx.unifier.get_ty_immutable(arg_ty) {
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TypeEnum::TObj { obj_id, .. } if *obj_id == PrimDef::List.id() => {
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let int32 = ctx.ctx.i32_type();
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let zero = int32.const_zero();
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let len = ctx
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.build_gep_and_load(
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arg.into_pointer_value(),
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&[zero, int32.const_int(1, false)],
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None,
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)
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.into_int_value();
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if len.get_type().get_bit_width() == 32 {
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Some(len.into())
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} else {
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Some(
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ctx.builder
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.build_int_truncate(len, int32, "len2i32")
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.map(Into::into)
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.unwrap(),
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)
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}
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}
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TypeEnum::TObj { obj_id, .. } if *obj_id == PrimDef::NDArray.id() => {
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let llvm_i32 = ctx.ctx.i32_type();
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let llvm_usize = generator.get_size_type(ctx.ctx);
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let arg = NDArrayValue::from_ptr_val(
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arg.into_pointer_value(),
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llvm_usize,
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None,
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);
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let ndims = arg.dim_sizes().size(ctx, generator);
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ctx.make_assert(
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generator,
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ctx.builder
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.build_int_compare(
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IntPredicate::NE,
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ndims,
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llvm_usize.const_zero(),
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"",
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)
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.unwrap(),
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"0:TypeError",
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&format!("{name}() of unsized object", name = prim.name()),
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[None, None, None],
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ctx.current_loc,
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);
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let len = unsafe {
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arg.dim_sizes().get_typed_unchecked(
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ctx,
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generator,
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&llvm_usize.const_zero(),
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None,
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)
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};
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if len.get_type().get_bit_width() == 32 {
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Some(len.into())
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} else {
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Some(
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ctx.builder
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.build_int_truncate(len, llvm_i32, "len")
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.map(Into::into)
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.unwrap(),
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)
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}
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}
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_ => unreachable!(),
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}
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})
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builtin_fns::call_len(generator, ctx, (arg_ty, arg)).map(|ret| Some(ret.into()))
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},
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)))),
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loc: None,
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