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Added initial support for attributes, did some cleanup
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| //! An `Attribute` are optional modifiers to functions, function parameters, and return types. | ||
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| use llvm_sys::prelude::LLVMAttributeRef; | ||
| use llvm_sys::core::{LLVMGetEnumAttributeKindForName, LLVMGetLastEnumAttributeKind, LLVMGetEnumAttributeKind, LLVMGetEnumAttributeValue, LLVMGetStringAttributeKind, LLVMGetStringAttributeValue, LLVMIsEnumAttribute, LLVMIsStringAttribute}; | ||
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| use std::ffi::CStr; | ||
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| // SubTypes: Attribute<Enum>, Attribute<String> | ||
| /// Functions, function parameters, and return types can have `Attribute`s to indicate | ||
| /// how they should be treated by optimizations and code generation. | ||
| #[derive(Debug)] | ||
| pub struct Attribute { | ||
| attribute: LLVMAttributeRef, | ||
| } | ||
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| impl Attribute { | ||
| pub(crate) fn new(attribute: LLVMAttributeRef) -> Self { | ||
| debug_assert!(!attribute.is_null()); | ||
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| Attribute { | ||
| attribute, | ||
| } | ||
| } | ||
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| /// Determines whether or not an `Attribute` is an enum. This method will | ||
| /// likely be removed in the future in favor of `Attribute`s being generically | ||
| /// defined. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::context::Context; | ||
| /// | ||
| /// let context = Context::create(); | ||
| /// let enum_attribute = context.create_enum_attribute(0, 10); | ||
| /// | ||
| /// assert!(enum_attribute.is_enum()); | ||
| /// ``` | ||
| pub fn is_enum(&self) -> bool { | ||
| unsafe { | ||
| LLVMIsEnumAttribute(self.attribute) == 1 | ||
| } | ||
| } | ||
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| /// Determines whether or not an `Attribute` is a string. This method will | ||
| /// likely be removed in the future in favor of `Attribute`s being generically | ||
| /// defined. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// 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 is_string(&self) -> bool { | ||
| unsafe { | ||
| LLVMIsStringAttribute(self.attribute) == 1 | ||
| } | ||
| } | ||
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| /// Gets the enum kind id associated with a builtin name. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::attributes::Attribute; | ||
| /// | ||
| /// // This kind id doesn't exist: | ||
| /// assert_eq!(Attribute::get_named_enum_kind_id("foobar"), 0); | ||
| /// | ||
| /// // These are real kind ids: | ||
| /// assert_eq!(Attribute::get_named_enum_kind_id("align"), 1); | ||
| /// assert_eq!(Attribute::get_named_enum_kind_id("builtin"), 5); | ||
| /// ``` | ||
| pub fn get_named_enum_kind_id(name: &str) -> u32 { | ||
| unsafe { | ||
| LLVMGetEnumAttributeKindForName(name.as_ptr() as *const i8, name.len()) | ||
| } | ||
| } | ||
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| /// Gets the kind id associated with an enum `Attribute`. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::context::Context; | ||
| /// | ||
| /// let context = Context::create(); | ||
| /// let enum_attribute = context.create_enum_attribute(0, 10); | ||
| /// | ||
| /// assert_eq!(enum_attribute.get_enum_kind_id(), 0); | ||
| /// ``` | ||
| pub fn get_enum_kind_id(&self) -> u32 { | ||
| assert!(self.is_enum()); // FIXME: SubTypes | ||
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| unsafe { | ||
| LLVMGetEnumAttributeKind(self.attribute) | ||
| } | ||
| } | ||
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| /// Gets the last enum kind id associated with builtin names. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::attributes::Attribute; | ||
| /// | ||
| /// assert_eq!(Attribute::get_last_enum_kind_id(), 56); | ||
| /// ``` | ||
| pub fn get_last_enum_kind_id() -> u32 { | ||
| unsafe { | ||
| LLVMGetLastEnumAttributeKind() | ||
| } | ||
| } | ||
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| /// Gets the value associated with an enum `Attribute`. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::context::Context; | ||
| /// | ||
| /// let context = Context::create(); | ||
| /// let enum_attribute = context.create_enum_attribute(0, 10); | ||
| /// | ||
| /// assert_eq!(enum_attribute.get_enum_value(), 10); | ||
| /// ``` | ||
| pub fn get_enum_value(&self) -> u64 { | ||
| assert!(self.is_enum()); // FIXME: SubTypes | ||
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| unsafe { | ||
| LLVMGetEnumAttributeValue(self.attribute) | ||
| } | ||
| } | ||
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| /// Gets the string kind id associated with a string attribute. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::context::Context; | ||
| /// use std::ffi::CString; | ||
| /// | ||
| /// let context = Context::create(); | ||
| /// let string_attribute = context.create_string_attribute("my_key", "my_val"); | ||
| /// | ||
| /// assert_eq!(*string_attribute.get_string_kind_id(), *CString::new("my_key").unwrap()); | ||
| /// ``` | ||
| pub fn get_string_kind_id(&self) -> &CStr { | ||
| assert!(self.is_string()); // FIXME: SubTypes | ||
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| let mut length = 0; | ||
| let cstr_ptr = unsafe { | ||
| LLVMGetStringAttributeKind(self.attribute, &mut length) | ||
| }; | ||
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| unsafe { | ||
| CStr::from_ptr(cstr_ptr) | ||
| } | ||
| } | ||
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| /// Gets the string value associated with a string attribute. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```no_run | ||
| /// use inkwell::context::Context; | ||
| /// use std::ffi::CString; | ||
| /// | ||
| /// let context = Context::create(); | ||
| /// let string_attribute = context.create_string_attribute("my_key", "my_val"); | ||
| /// | ||
| /// assert_eq!(*string_attribute.get_string_value(), *CString::new("my_val").unwrap()); | ||
| /// ``` | ||
| pub fn get_string_value(&self) -> &CStr { | ||
| assert!(self.is_string()); // FIXME: SubTypes | ||
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| let mut length = 0; | ||
| let cstr_ptr = unsafe { | ||
| LLVMGetStringAttributeValue(self.attribute, &mut length) | ||
| }; | ||
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| unsafe { | ||
| CStr::from_ptr(cstr_ptr) | ||
| } | ||
| } | ||
| } |
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