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decl_module! print better error on duplicate reserved keyword (#6384)

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* `decl_module!` print better error on duplicate reserved keyword

This prints a better error message on duplicated reserved keywords,
instead of complaining because of missing `origin`.

* Review feedback
This commit is contained in:
Bastian Köcher
2020-06-18 09:35:18 +02:00
committed by GitHub
parent fec43fe6d7
commit 325dab19cc
6 changed files with 233 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/frame/support/src/dispatch.rs
+139 -1
View File
@@ -399,6 +399,29 @@ macro_rules! decl_module {
"`deposit_event` function is reserved and must follow the syntax: `$vis:vis fn deposit_event() = default;`"
);
};
// Compile error on `deposit_event` being added a second time.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )+ }
{ $( $on_initialize:tt )* }
{ $( $on_runtime_upgrade:tt )* }
{ $( $on_finalize:tt )* }
{ $( $offchain:tt )* }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )* }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
$vis:vis fn deposit_event() = default;
$($rest:tt)*
) => {
compile_error!("`deposit_event` can only be passed once as input.");
};
// Add on_finalize
(@normalize
$(#[$attr:meta])*
@@ -462,6 +485,30 @@ macro_rules! decl_module {
`on_initialize` or `on_runtime_upgrade` instead"
);
};
// Compile error on `on_finalize` being added a second time.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )* }
{ $( $on_initialize:tt )* }
{ $( $on_runtime_upgrade:tt )* }
{ $( $on_finalize:tt )+ }
{ $( $offchain:tt )* }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )* }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
#[weight = $weight:expr]
fn on_finalize( $( $param_name:ident : $param:ty ),* $(,)? ) { $( $impl:tt )* }
$($rest:tt)*
) => {
compile_error!("`on_finalize` can only be passed once as input.");
};
// compile_error on_runtime_upgrade, without a given weight removed syntax.
(@normalize
$(#[$attr:meta])*
@@ -554,6 +601,29 @@ macro_rules! decl_module {
$($rest)*
);
};
// Compile error on `on_runtime_upgrade` being added a second time.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )* }
{ $( $on_initialize:tt )* }
{ $( $on_runtime_upgrade:tt )+ }
{ $( $on_finalize:tt )* }
{ $( $offchain:tt )* }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )* }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
fn on_runtime_upgrade( $( $param_name:ident : $param:ty ),* $(,)? ) -> $return:ty { $( $impl:tt )* }
$($rest:tt)*
) => {
compile_error!("`on_runtime_upgrade` can only be passed once as input.");
};
// Add integrity_test
(@normalize
$(#[$attr:meta])*
@@ -595,6 +665,29 @@ macro_rules! decl_module {
$($rest)*
);
};
// Compile error on `integrity_test` being added a second time.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )* }
{ $( $on_initialize:tt )* }
{ $( $on_runtime_upgrade:tt )* }
{ $( $on_finalize:tt )* }
{ $( $offchain:tt )* }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )+ }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
fn integrity_test() { $( $impl:tt )* }
$($rest:tt)*
) => {
compile_error!("`integrity_test` can only be passed once as input.");
};
// compile_error on_initialize, without a given weight removed syntax.
(@normalize
$(#[$attr:meta])*
@@ -687,6 +780,29 @@ macro_rules! decl_module {
$($rest)*
);
};
// Compile error on trying to add a second `on_initialize`.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )* }
{ $( $on_initialize:tt )+ }
{ $( $on_runtime_upgrade:tt )* }
{ $( $on_finalize:tt )* }
{ $( $offchain:tt )* }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )* }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
fn on_initialize( $( $param_name:ident : $param:ty ),* $(,)? ) -> $return:ty { $( $impl:tt )* }
$($rest:tt)*
) => {
compile_error!("`on_initialize` can only be passed once as input.");
};
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
@@ -727,7 +843,29 @@ macro_rules! decl_module {
$($rest)*
);
};
// Compile error on trying to add a second `offchain_worker`.
(@normalize
$(#[$attr:meta])*
pub struct $mod_type:ident<
$trait_instance:ident: $trait_name:ident$(<I>, I: $instantiable:path $(= $module_default_instance:path)?)?
>
for enum $call_type:ident where origin: $origin_type:ty, system = $system:ident
{ $( $other_where_bounds:tt )* }
{ $( $deposit_event:tt )* }
{ $( $on_initialize:tt )* }
{ $( $on_runtime_upgrade:tt )* }
{ $( $on_finalize:tt )* }
{ $( $offchain:tt )+ }
{ $( $constants:tt )* }
{ $( $error_type:tt )* }
{ $( $integrity_test:tt )* }
[ $( $dispatchables:tt )* ]
$(#[doc = $doc_attr:tt])*
fn offchain_worker( $( $param_name:ident : $param:ty ),* $(,)? ) -> $return:ty { $( $impl:tt )* }
$($rest:tt)*
) => {
compile_error!("`offchain_worker` can only be passed once as input.");
};
// This puts a constant in the parsed constants list.
(@normalize
$(#[$attr:meta])*