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use llvm_sys::core::{LLVMConstArray, LLVMGetArrayLength};
use llvm_sys::prelude::{LLVMTypeRef, LLVMValueRef};
use crate::context::ContextRef;
use crate::support::LLVMString;
use crate::types::enums::BasicMetadataTypeEnum;
use crate::types::traits::AsTypeRef;
use crate::types::{BasicTypeEnum, FunctionType, PointerType, Type};
use crate::values::{ArrayValue, AsValueRef, IntValue};
use crate::AddressSpace;
use std::fmt::{self, Display};
/// An `ArrayType` is the type of contiguous constants or variables.
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub struct ArrayType<'ctx> {
array_type: Type<'ctx>,
}
impl<'ctx> ArrayType<'ctx> {
/// Create `ArrayType` from [`LLVMTypeRef`]
///
/// # Safety
/// Undefined behavior, if referenced type isn't array type
pub unsafe fn new(array_type: LLVMTypeRef) -> Self {
assert!(!array_type.is_null());
ArrayType {
array_type: Type::new(array_type),
}
}
// TODO: impl only for ArrayType<!StructType<Opaque>>
/// Gets the size of this `ArrayType`. Value may vary depending on the target architecture.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_type_size = i8_array_type.size_of();
/// ```
pub fn size_of(self) -> Option<IntValue<'ctx>> {
self.array_type.size_of()
}
/// Gets the alignment of this `ArrayType`. Value may vary depending on the target architecture.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_type_alignment = i8_array_type.get_alignment();
/// ```
pub fn get_alignment(self) -> IntValue<'ctx> {
self.array_type.get_alignment()
}
/// Creates a `PointerType` with this `ArrayType` for its element type.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
/// use inkwell::AddressSpace;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_ptr_type = i8_array_type.ptr_type(AddressSpace::default());
///
/// #[cfg(any(
/// feature = "llvm4-0",
/// feature = "llvm5-0",
/// feature = "llvm6-0",
/// feature = "llvm7-0",
/// feature = "llvm8-0",
/// feature = "llvm9-0",
/// feature = "llvm10-0",
/// feature = "llvm11-0",
/// feature = "llvm12-0",
/// feature = "llvm13-0",
/// feature = "llvm14-0"
/// ))]
/// assert_eq!(i8_array_ptr_type.get_element_type().into_array_type(), i8_array_type);
/// ```
pub fn ptr_type(self, address_space: AddressSpace) -> PointerType<'ctx> {
self.array_type.ptr_type(address_space)
}
/// Gets a reference to the `Context` this `ArrayType` was created in.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
///
/// assert_eq!(i8_array_type.get_context(), context);
/// ```
pub fn get_context(self) -> ContextRef<'ctx> {
self.array_type.get_context()
}
/// Creates a `FunctionType` with this `ArrayType` for its return type.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let fn_type = i8_array_type.fn_type(&[], false);
/// ```
pub fn fn_type(self, param_types: &[BasicMetadataTypeEnum<'ctx>], is_var_args: bool) -> FunctionType<'ctx> {
self.array_type.fn_type(param_types, is_var_args)
}
/// Creates an `ArrayType` with this `ArrayType` for its element type.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_array_type = i8_array_type.array_type(3);
///
/// assert_eq!(i8_array_array_type.len(), 3);
/// assert_eq!(i8_array_array_type.get_element_type().into_array_type(), i8_array_type);
/// ```
pub fn array_type(self, size: u32) -> ArrayType<'ctx> {
self.array_type.array_type(size)
}
/// Creates a constant `ArrayValue`.
///
/// # Example
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let f32_type = context.f32_type();
/// let f32_array_type = f32_type.array_type(3);
/// let f32_array_val = f32_array_type.const_zero();
/// let f32_array_array = f32_array_type.const_array(&[f32_array_val, f32_array_val]);
///
/// assert!(f32_array_array.is_const());
/// ```
pub fn const_array(self, values: &[ArrayValue<'ctx>]) -> ArrayValue<'ctx> {
let mut values: Vec<LLVMValueRef> = values.iter().map(|val| val.as_value_ref()).collect();
unsafe {
ArrayValue::new(LLVMConstArray(
self.as_type_ref(),
values.as_mut_ptr(),
values.len() as u32,
))
}
}
/// Creates a constant zero value of this `ArrayType`.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_zero = i8_array_type.const_zero();
/// ```
pub fn const_zero(self) -> ArrayValue<'ctx> {
unsafe { ArrayValue::new(self.array_type.const_zero()) }
}
/// Gets the length of this `ArrayType`.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
///
/// assert_eq!(i8_array_type.len(), 3);
/// ```
pub fn len(self) -> u32 {
unsafe { LLVMGetArrayLength(self.as_type_ref()) }
}
/// Print the definition of an `ArrayType` to `LLVMString`
pub fn print_to_string(self) -> LLVMString {
self.array_type.print_to_string()
}
/// Creates an undefined instance of a `ArrayType`.
///
/// # Example
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
/// let i8_array_undef = i8_array_type.get_undef();
///
/// assert!(i8_array_undef.is_undef());
/// ```
pub fn get_undef(self) -> ArrayValue<'ctx> {
unsafe { ArrayValue::new(self.array_type.get_undef()) }
}
// SubType: ArrayType<BT> -> BT?
/// Gets the element type of this `ArrayType`.
///
/// # Example
///
/// ```no_run
/// use inkwell::context::Context;
///
/// let context = Context::create();
/// let i8_type = context.i8_type();
/// let i8_array_type = i8_type.array_type(3);
///
/// assert_eq!(i8_array_type.get_element_type().into_int_type(), i8_type);
/// ```
pub fn get_element_type(self) -> BasicTypeEnum<'ctx> {
self.array_type.get_element_type().to_basic_type_enum()
}
}
unsafe impl AsTypeRef for ArrayType<'_> {
fn as_type_ref(&self) -> LLVMTypeRef {
self.array_type.ty
}
}
impl Display for ArrayType<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}", self.print_to_string())
}
}