Struct inkwell::context::ContextRef

pub struct ContextRef<'ctx> { /* private fields */ }

A ContextRef is a smart pointer allowing borrowed access to a type’s Context.

Implementations

impl<'ctx> ContextRef<'ctx>

pub fn create_builder(&self) -> Builder<'ctx>

Creates a new Builder for a Context.

Example

use inkwell::context::Context;

let context = Context::create();
let builder = context.create_builder();

pub fn create_module(&self, name: &str) -> Module<'ctx>

Creates a new Module for a Context.

Example

use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_module");

pub fn create_module_from_ir( &self, memory_buffer: MemoryBuffer ) -> Result<Module<'ctx>, LLVMString>

Creates a new Module for the current Context from a MemoryBuffer.

Example

use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_module");
let builder = context.create_builder();
let void_type = context.void_type();
let fn_type = void_type.fn_type(&[], false);
let fn_val = module.add_function("my_fn", fn_type, None);
let basic_block = context.append_basic_block(fn_val, "entry");

builder.position_at_end(basic_block);
builder.build_return(None).unwrap();

let memory_buffer = module.write_bitcode_to_memory();

let module2 = context.create_module_from_ir(memory_buffer).unwrap();

pub fn create_inline_asm( &self, ty: FunctionType<'ctx>, assembly: String, constraints: String, sideeffects: bool, alignstack: bool, dialect: Option<InlineAsmDialect>, can_throw: bool ) -> PointerValue<'ctx>

Creates a inline asm function pointer.

Example

use std::convert::TryFrom;
use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_module");
let builder = context.create_builder();
let void_type = context.void_type();
let fn_type = void_type.fn_type(&[], false);
let fn_val = module.add_function("my_fn", fn_type, None);
let basic_block = context.append_basic_block(fn_val, "entry");

builder.position_at_end(basic_block);
let asm_fn = context.i64_type().fn_type(&[context.i64_type().into(), context.i64_type().into()], false);
let asm = context.create_inline_asm(
    asm_fn,
    "syscall".to_string(),
    "=r,{rax},{rdi}".to_string(),
    true,
    false,
    #[cfg(not(any(feature = "llvm4-0", feature = "llvm5-0", feature = "llvm6-0")))] None,
    #[cfg(not(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"
    )))]
    false,
);
let params = &[context.i64_type().const_int(60, false).into(), context.i64_type().const_int(1, false).into()];

#[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"
))]
{
    use inkwell::values::CallableValue;
    let callable_value = CallableValue::try_from(asm).unwrap();
    builder.build_call(callable_value, params, "exit").unwrap();
}

#[cfg(any(feature = "llvm15-0", feature = "llvm16-0", feature = "llvm17-0"))]
builder.build_indirect_call(asm_fn, asm, params, "exit").unwrap();

builder.build_return(None).unwrap();

pub fn void_type(&self) -> VoidType<'ctx>

Gets the VoidType. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let void_type = context.void_type();

assert_eq!(void_type.get_context(), context);

pub fn bool_type(&self) -> IntType<'ctx>

Gets the IntType representing 1 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let bool_type = context.bool_type();

assert_eq!(bool_type.get_bit_width(), 1);
assert_eq!(bool_type.get_context(), context);

pub fn i8_type(&self) -> IntType<'ctx>

Gets the IntType representing 8 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i8_type = context.i8_type();

assert_eq!(i8_type.get_bit_width(), 8);
assert_eq!(i8_type.get_context(), context);

pub fn i16_type(&self) -> IntType<'ctx>

Gets the IntType representing 16 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i16_type = context.i16_type();

assert_eq!(i16_type.get_bit_width(), 16);
assert_eq!(i16_type.get_context(), context);

pub fn i32_type(&self) -> IntType<'ctx>

Gets the IntType representing 32 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i32_type = context.i32_type();

assert_eq!(i32_type.get_bit_width(), 32);
assert_eq!(i32_type.get_context(), context);

pub fn i64_type(&self) -> IntType<'ctx>

Gets the IntType representing 64 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i64_type = context.i64_type();

assert_eq!(i64_type.get_bit_width(), 64);
assert_eq!(i64_type.get_context(), context);

pub fn i128_type(&self) -> IntType<'ctx>

Gets the IntType representing 128 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i128_type = context.i128_type();

assert_eq!(i128_type.get_bit_width(), 128);
assert_eq!(i128_type.get_context(), context);

pub fn custom_width_int_type(&self, bits: u32) -> IntType<'ctx>

Gets the IntType representing a custom bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();
let i42_type = context.custom_width_int_type(42);

assert_eq!(i42_type.get_bit_width(), 42);
assert_eq!(i42_type.get_context(), context);

pub fn metadata_type(&self) -> MetadataType<'ctx>

Gets the MetadataType representing 128 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;
use inkwell::values::IntValue;

let context = Context::create();
let md_type = context.metadata_type();

assert_eq!(md_type.get_context(), context);

pub fn ptr_sized_int_type( &self, target_data: &TargetData, address_space: Option<AddressSpace> ) -> IntType<'ctx>

Gets the IntType representing a bit width of a pointer. It will be assigned the referenced context.

Example

use inkwell::OptimizationLevel;
use inkwell::context::Context;
use inkwell::targets::{InitializationConfig, Target};

Target::initialize_native(&InitializationConfig::default()).expect("Failed to initialize native target");

let context = Context::create();
let module = context.create_module("sum");
let execution_engine = module.create_jit_execution_engine(OptimizationLevel::None).unwrap();
let target_data = execution_engine.get_target_data();
let int_type = context.ptr_sized_int_type(&target_data, None);

pub fn f16_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 16 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();

let f16_type = context.f16_type();

assert_eq!(f16_type.get_context(), context);

pub fn f32_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 32 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();

let f32_type = context.f32_type();

assert_eq!(f32_type.get_context(), context);

pub fn f64_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 64 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();

let f64_type = context.f64_type();

assert_eq!(f64_type.get_context(), context);

pub fn x86_f80_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 80 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();

let x86_f80_type = context.x86_f80_type();

assert_eq!(x86_f80_type.get_context(), context);

pub fn f128_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 128 bit width. It will be assigned the current context.

Example

use inkwell::context::Context;

let context = Context::create();

let f128_type = context.f128_type();

assert_eq!(f128_type.get_context(), context);

pub fn ppc_f128_type(&self) -> FloatType<'ctx>

Gets the FloatType representing a 128 bit width. It will be assigned the current context.

PPC is two 64 bits side by side rather than one single 128 bit float.

Example

use inkwell::context::Context;

let context = Context::create();

let f128_type = context.ppc_f128_type();

assert_eq!(f128_type.get_context(), context);

pub fn struct_type( &self, field_types: &[BasicTypeEnum<'ctx>], packed: bool ) -> StructType<'ctx>

Creates a StructType definition from heterogeneous types in the current Context.

Example

use inkwell::context::Context;

let context = Context::create();
let f32_type = context.f32_type();
let i16_type = context.i16_type();
let struct_type = context.struct_type(&[i16_type.into(), f32_type.into()], false);

assert_eq!(struct_type.get_field_types(), &[i16_type.into(), f32_type.into()]);

pub fn opaque_struct_type(&self, name: &str) -> StructType<'ctx>

Creates an opaque StructType with no type definition yet defined.

Example

use inkwell::context::Context;

let context = Context::create();
let f32_type = context.f32_type();
let i16_type = context.i16_type();
let struct_type = context.opaque_struct_type("my_struct");

assert_eq!(struct_type.get_field_types(), &[]);

pub fn get_struct_type(&self, name: &str) -> Option<StructType<'ctx>>

Gets a named StructType from this Context.

Example

use inkwell::context::Context;

let context = Context::create();

assert!(context.get_struct_type("foo").is_none());

let opaque = context.opaque_struct_type("foo");

assert_eq!(context.get_struct_type("foo").unwrap(), opaque);

pub fn const_struct( &self, values: &[BasicValueEnum<'ctx>], packed: bool ) -> StructValue<'ctx>

Creates a constant StructValue from constant values.

Example

use inkwell::context::Context;

let context = Context::create();
let f32_type = context.f32_type();
let i16_type = context.i16_type();
let f32_one = f32_type.const_float(1.);
let i16_two = i16_type.const_int(2, false);
let const_struct = context.const_struct(&[i16_two.into(), f32_one.into()], false);

assert_eq!(const_struct.get_type().get_field_types(), &[i16_type.into(), f32_type.into()]);

pub fn append_basic_block( &self, function: FunctionValue<'ctx>, name: &str ) -> BasicBlock<'ctx>

Append a named BasicBlock at the end of the referenced FunctionValue.

Example

use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_mod");
let void_type = context.void_type();
let fn_type = void_type.fn_type(&[], false);
let fn_value = module.add_function("my_fn", fn_type, None);
let entry_basic_block = context.append_basic_block(fn_value, "entry");

assert_eq!(fn_value.count_basic_blocks(), 1);

let last_basic_block = context.append_basic_block(fn_value, "last");

assert_eq!(fn_value.count_basic_blocks(), 2);
assert_eq!(fn_value.get_first_basic_block().unwrap(), entry_basic_block);
assert_eq!(fn_value.get_last_basic_block().unwrap(), last_basic_block);

pub fn insert_basic_block_after( &self, basic_block: BasicBlock<'ctx>, name: &str ) -> BasicBlock<'ctx>

Append a named BasicBlock after the referenced BasicBlock.

Example

use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_mod");
let void_type = context.void_type();
let fn_type = void_type.fn_type(&[], false);
let fn_value = module.add_function("my_fn", fn_type, None);
let entry_basic_block = context.append_basic_block(fn_value, "entry");

assert_eq!(fn_value.count_basic_blocks(), 1);

let last_basic_block = context.insert_basic_block_after(entry_basic_block, "last");

assert_eq!(fn_value.count_basic_blocks(), 2);
assert_eq!(fn_value.get_first_basic_block().unwrap(), entry_basic_block);
assert_eq!(fn_value.get_last_basic_block().unwrap(), last_basic_block);

pub fn prepend_basic_block( &self, basic_block: BasicBlock<'ctx>, name: &str ) -> BasicBlock<'ctx>

Prepend a named BasicBlock before the referenced BasicBlock.

Example

use inkwell::context::Context;

let context = Context::create();
let module = context.create_module("my_mod");
let void_type = context.void_type();
let fn_type = void_type.fn_type(&[], false);
let fn_value = module.add_function("my_fn", fn_type, None);
let entry_basic_block = context.append_basic_block(fn_value, "entry");

assert_eq!(fn_value.count_basic_blocks(), 1);

let first_basic_block = context.prepend_basic_block(entry_basic_block, "first");

assert_eq!(fn_value.count_basic_blocks(), 2);
assert_eq!(fn_value.get_first_basic_block().unwrap(), first_basic_block);
assert_eq!(fn_value.get_last_basic_block().unwrap(), entry_basic_block);

pub fn metadata_node( &self, values: &[BasicMetadataValueEnum<'ctx>] ) -> MetadataValue<'ctx>

Creates a MetadataValue tuple of heterogeneous types (a “Node”) for the current context. It can be assigned to a value.

Example

use inkwell::context::Context;

let context = Context::create();
let i8_type = context.i8_type();
let i8_two = i8_type.const_int(2, false);
let f32_type = context.f32_type();
let f32_zero = f32_type.const_float(0.);
let md_node = context.metadata_node(&[i8_two.into(), f32_zero.into()]);
let f32_one = f32_type.const_float(1.);
let void_type = context.void_type();

let builder = context.create_builder();
let module = context.create_module("my_mod");
let fn_type = void_type.fn_type(&[f32_type.into()], false);
let fn_value = module.add_function("my_func", fn_type, None);
let entry_block = context.append_basic_block(fn_value, "entry");

builder.position_at_end(entry_block);

let ret_instr = builder.build_return(None).unwrap();

assert!(md_node.is_node());

ret_instr.set_metadata(md_node, 0);

pub fn metadata_string(&self, string: &str) -> MetadataValue<'ctx>

Creates a MetadataValue string for the current context. It can be assigned to a value.

Example

use inkwell::context::Context;

let context = Context::create();
let md_string = context.metadata_string("Floats are awesome!");
let f32_type = context.f32_type();
let f32_one = f32_type.const_float(1.);
let void_type = context.void_type();

let builder = context.create_builder();
let module = context.create_module("my_mod");
let fn_type = void_type.fn_type(&[f32_type.into()], false);
let fn_value = module.add_function("my_func", fn_type, None);
let entry_block = context.append_basic_block(fn_value, "entry");

builder.position_at_end(entry_block);

let ret_instr = builder.build_return(None).unwrap();

assert!(md_string.is_string());

ret_instr.set_metadata(md_string, 0);

pub fn get_kind_id(&self, key: &str) -> u32

Obtains the index of a metadata kind id. If the string doesn’t exist, LLVM will add it at index FIRST_CUSTOM_METADATA_KIND_ID onward.

Example

use inkwell::context::Context;
use inkwell::values::FIRST_CUSTOM_METADATA_KIND_ID;

let context = Context::create();

assert_eq!(context.get_kind_id("dbg"), 0);
assert_eq!(context.get_kind_id("tbaa"), 1);
assert_eq!(context.get_kind_id("prof"), 2);

// Custom kind id doesn't exist in LLVM until now:
assert_eq!(context.get_kind_id("foo"), FIRST_CUSTOM_METADATA_KIND_ID);

pub fn create_enum_attribute(&self, kind_id: u32, val: u64) -> Attribute

Creates an enum Attribute in this Context.

Example

use inkwell::context::Context;

let context = Context::create();
let enum_attribute = context.create_enum_attribute(0, 10);

assert!(enum_attribute.is_enum());

pub fn create_string_attribute(&self, key: &str, val: &str) -> Attribute

Creates a string Attribute in this Context.

Example

use inkwell::context::Context;

let context = Context::create();
let string_attribute = context.create_string_attribute("my_key_123", "my_val");

assert!(string_attribute.is_string());

pub fn create_type_attribute( &self, kind_id: u32, type_ref: AnyTypeEnum<'_> ) -> Attribute

Create an enum Attribute with an AnyTypeEnum attached to it.

Example

use inkwell::context::Context;
use inkwell::attributes::Attribute;
use inkwell::types::AnyType;

let context = Context::create();
let kind_id = Attribute::get_named_enum_kind_id("sret");
let any_type = context.i32_type().as_any_type_enum();
let type_attribute = context.create_type_attribute(
    kind_id,
    any_type,
);

assert!(type_attribute.is_type());
assert_eq!(type_attribute.get_type_value(), any_type);
assert_ne!(type_attribute.get_type_value(), context.i64_type().as_any_type_enum());

pub fn const_string( &self, string: &[u8], null_terminated: bool ) -> ArrayValue<'ctx>

Creates a const string which may be null terminated.

Example

use inkwell::context::Context;
use inkwell::values::AnyValue;

let context = Context::create();
let string = context.const_string(b"my_string", false);

assert_eq!(string.print_to_string().to_string(), "[9 x i8] c\"my_string\"");

Trait Implementations

impl<'ctx> AsContextRef<'ctx> for ContextRef<'ctx>

fn as_ctx_ref(&self) -> LLVMContextRef

Acquires the underlying raw pointer belonging to this ContextRef type.

impl<'ctx> Debug for ContextRef<'ctx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<Context> for ContextRef<'_>

fn eq(&self, other: &Context) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq<ContextRef<'_>> for Context

fn eq(&self, other: &ContextRef<'_>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'ctx> PartialEq for ContextRef<'ctx>

fn eq(&self, other: &ContextRef<'ctx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'ctx> Eq for ContextRef<'ctx>

impl<'ctx> StructuralEq for ContextRef<'ctx>

impl<'ctx> StructuralPartialEq for ContextRef<'ctx>