更新libclamav库1.0.0版本
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102
clamav/libclamav_rust/.cargo/vendor/bindgen/src/parse.rs
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102
clamav/libclamav_rust/.cargo/vendor/bindgen/src/parse.rs
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//! Common traits and types related to parsing our IR from Clang cursors.
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use crate::clang;
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use crate::ir::context::{BindgenContext, ItemId, TypeId};
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use crate::ir::ty::TypeKind;
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/// Not so much an error in the traditional sense, but a control flow message
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/// when walking over Clang's AST with a cursor.
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#[derive(Debug)]
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pub enum ParseError {
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/// Recurse down the current AST node's children.
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Recurse,
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/// Continue on to the next sibling AST node, or back up to the parent's
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/// siblings if we've exhausted all of this node's siblings (and so on).
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Continue,
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}
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/// The result of parsing a Clang AST node.
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#[derive(Debug)]
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pub enum ParseResult<T> {
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/// We've already resolved this item before, here is the extant `ItemId` for
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/// it.
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AlreadyResolved(ItemId),
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/// This is a newly parsed item. If the cursor is `Some`, it points to the
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/// AST node where the new `T` was declared.
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New(T, Option<clang::Cursor>),
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}
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/// An intermediate representation "sub-item" (i.e. one of the types contained
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/// inside an `ItemKind` variant) that can be parsed from a Clang cursor.
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pub trait ClangSubItemParser: Sized {
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/// Attempt to parse this type from the given cursor.
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///
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/// The fact that is a reference guarantees it's held by the context, and
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/// allow returning already existing types.
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fn parse(
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cursor: clang::Cursor,
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context: &mut BindgenContext,
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) -> Result<ParseResult<Self>, ParseError>;
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}
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/// An intermediate representation item that can be parsed from a Clang cursor.
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pub trait ClangItemParser: Sized {
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/// Parse this item from the given Clang cursor.
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fn parse(
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cursor: clang::Cursor,
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parent: Option<ItemId>,
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context: &mut BindgenContext,
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) -> Result<ItemId, ParseError>;
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/// Parse this item from the given Clang type.
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fn from_ty(
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ty: &clang::Type,
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location: clang::Cursor,
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parent: Option<ItemId>,
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ctx: &mut BindgenContext,
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) -> Result<TypeId, ParseError>;
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/// Identical to `from_ty`, but use the given `id` as the `ItemId` for the
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/// newly parsed item.
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fn from_ty_with_id(
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id: ItemId,
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ty: &clang::Type,
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location: clang::Cursor,
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parent: Option<ItemId>,
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ctx: &mut BindgenContext,
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) -> Result<TypeId, ParseError>;
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/// Parse this item from the given Clang type, or if we haven't resolved all
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/// the other items this one depends on, an unresolved reference.
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fn from_ty_or_ref(
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ty: clang::Type,
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location: clang::Cursor,
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parent_id: Option<ItemId>,
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context: &mut BindgenContext,
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) -> TypeId;
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/// Identical to `from_ty_or_ref`, but use the given `potential_id` as the
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/// `ItemId` for the newly parsed item.
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fn from_ty_or_ref_with_id(
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potential_id: ItemId,
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ty: clang::Type,
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location: clang::Cursor,
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parent_id: Option<ItemId>,
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context: &mut BindgenContext,
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) -> TypeId;
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/// Create a named template type.
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fn type_param(
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with_id: Option<ItemId>,
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location: clang::Cursor,
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ctx: &mut BindgenContext,
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) -> Option<TypeId>;
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/// Create a builtin type.
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fn builtin_type(
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kind: TypeKind,
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is_const: bool,
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context: &mut BindgenContext,
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) -> TypeId;
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}
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