modules: rust: add workspace methods returning arguments for build targets

Add rustc_args(), env(), and rust_dependency_map() methods to the
RustPackage class.  They simply delegate to PackageState and
PackageConfiguration.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/mesonbuild/modules/rust.py b/mesonbuild/modules/rust.py
index 186774413..0ea1c8f7e 100644
--- a/mesonbuild/modules/rust.py
+++ b/mesonbuild/modules/rust.py
@@ -158,6 +158,9 @@ class RustCrate(ModuleObject):
             'features': self.features_method,
             'name': self.name_method,
             'version': self.version_method,
+            'rust_args': self.rust_args_method,
+            'env': self.env_method, # type: ignore[dict-item]
+            'rust_dependency_map': self.rust_dependency_map_method, # type: ignore[dict-item]
         })
 
     @noPosargs
@@ -190,6 +193,24 @@ class RustCrate(ModuleObject):
         """Returns chosen features for specific package."""
         return sorted(list(self.package.cfg.features))
 
+    @noPosargs
+    @noKwargs
+    def rust_args_method(self, state: ModuleState, args: T.List, kwargs: TYPE_kwargs) -> T.List[str]:
+        """Returns rustc arguments for this package."""
+        return self.package.get_rustc_args(state.environment, state.subdir, mesonlib.MachineChoice.HOST)
+
+    @noPosargs
+    @noKwargs
+    def env_method(self, state: ModuleState, args: T.List, kwargs: TYPE_kwargs) -> T.Dict[str, str]:
+        """Returns environment variables for this package."""
+        return self.package.get_env_dict(state.environment, state.subdir)
+
+    @noPosargs
+    @noKwargs
+    def rust_dependency_map_method(self, state: ModuleState, args: T.List, kwargs: TYPE_kwargs) -> T.Dict[str, str]:
+        """Returns rust dependency mapping for this package."""
+        return self.package.cfg.get_dependency_map(self.package.manifest)
+
 
 class RustPackage(RustCrate):
     """Represents a Rust package within a workspace."""