rust: qemu_api_macros: add Wrapper derive macro

Add a derive macro that makes it easy to peel off all the layers of
specialness (UnsafeCell, MaybeUninit, etc.) and just get a pointer
to the wrapped

rust: qemu_api_macros: add Wrapper derive macro

Add a derive macro that makes it easy to peel off all the layers of
specialness (UnsafeCell, MaybeUninit, etc.) and just get a pointer
to the wrapped type; and likewise add them back starting from a
*mut.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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rust: qemu-api-macros: add automatic TryFrom/TryInto derivation

This is going to be fairly common. Using a custom procedural macro
provides better error messages and automatically finds the right
ty

rust: qemu-api-macros: add automatic TryFrom/TryInto derivation

This is going to be fairly common. Using a custom procedural macro
provides better error messages and automatically finds the right
type.

Note that this is different from the same-named macro in the
derive_more crate. That one provides conversion from e.g. tuples
to enums with tuple variants, not from integers to enums.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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rust: qemu-api-macros: extend error reporting facility to parse errors

Generalize the CompileError tuple to an enum, that can be either an error
message or a parse error from syn.

Reviewed-by: Zhao

rust: qemu-api-macros: extend error reporting facility to parse errors

Generalize the CompileError tuple to an enum, that can be either an error
message or a parse error from syn.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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rust: macros: check that the first field of a #[derive(Object)] struct is a ParentField

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust: macros: check that #[derive(Object)] requires #[repr(C)]

Convert derive_object to the same pattern of first making a
Result<proc_macro2::TokenStream, CompileError>, and then doing
.unwrap_or_e

rust: macros: check that #[derive(Object)] requires #[repr(C)]

Convert derive_object to the same pattern of first making a
Result<proc_macro2::TokenStream, CompileError>, and then doing
.unwrap_or_else(Into::into) to support checking the validity of
the input. Add is_c_repr to check that all QOM structs include
a #[repr(C)] attribute.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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rust: rename qemu-api modules to follow C code a bit more

A full match would mean calling them qom::object and hw::core::qdev. For now,
keep the names shorter but still a bit easier to find.

Revie

rust: rename qemu-api modules to follow C code a bit more

A full match would mean calling them qom::object and hw::core::qdev. For now,
keep the names shorter but still a bit easier to find.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...