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use proc_macro2::{Ident, Span};
use quote::quote;
use syn::{parse_quote, punctuated::Punctuated, FieldValue, Token};
use crate::cmd::{CmdCtxBuilderTypeBuilder, FlowCount, ImplHeaderBuilder, ScopeStruct};
/// Generates the constructor for the command context builder for a given scope.
pub fn impl_constructor(scope_struct: &ScopeStruct) -> proc_macro2::TokenStream {
let scope = scope_struct.scope();
let scope_builder_name = &scope_struct.item_struct().ident;
let constructor_method_name = Ident::new(scope.as_str(), Span::call_site());
let scope_field_values = {
let mut type_params = Punctuated::<FieldValue, Token![,]>::new();
scope_field_values::profile_and_flow_selection_push(&mut type_params, scope);
scope_field_values::params_selection_push(&mut type_params, scope);
if scope.flow_count() == FlowCount::One {
type_params.push(parse_quote!(
params_specs_provided: peace_params::ParamsSpecs::new()
));
}
type_params
};
// crate::ctx::CmdCtxBuilder<
// 'ctx,
// crate::ctx::CmdCtxBuilderTypesCollector<
// AppError,
// Output,
// peace_rt_model::params::ParamsKeysImpl<
// peace_rt_model::params::KeyUnknown,
// peace_rt_model::params::KeyUnknown,
// peace_rt_model::params::KeyUnknown,
// >,
// crate::scopes::type_params::WorkspaceParamsNone,
// crate::scopes::type_params::ProfileParamsNone,
// crate::scopes::type_params::FlowParamsNone,
// crate::scopes::type_params::ProfileNotSelected,
// crate::scopes::type_params::FlowNotSelected,
// >,
// >
let builder_type = CmdCtxBuilderTypeBuilder::new(scope_builder_name.clone())
.with_workspace_params_k_maybe(parse_quote!(peace_rt_model::params::KeyUnknown))
.with_profile_params_k_maybe(parse_quote!(peace_rt_model::params::KeyUnknown))
.with_flow_params_k_maybe(parse_quote!(peace_rt_model::params::KeyUnknown))
.with_workspace_params_selection(parse_quote!(
crate::scopes::type_params::WorkspaceParamsNone
))
.with_profile_params_selection(parse_quote!(crate::scopes::type_params::ProfileParamsNone))
.with_flow_params_selection(parse_quote!(crate::scopes::type_params::FlowParamsNone))
.with_profile_selection(parse_quote!(crate::scopes::type_params::ProfileNotSelected))
.with_flow_selection(parse_quote!(crate::scopes::type_params::FlowNotSelected))
.build();
let impl_header = ImplHeaderBuilder::new(builder_type)
.with_output_constraint_enabled(false)
.with_app_error_constraint_enabled(false)
.with_workspace_params_k_maybe(None)
.with_profile_params_k_maybe(None)
.with_flow_params_k_maybe(None)
.with_workspace_params_selection(None)
.with_profile_params_selection(None)
.with_flow_params_selection(None)
.with_profile_selection(None)
.with_flow_selection(None)
.build();
quote! {
#impl_header
{
/// Returns a `CmdCtxBuilder` for a single profile and flow.
pub fn #constructor_method_name(
output: own::OwnedOrMutRef<'ctx, Output>,
workspace: own::OwnedOrRef<'ctx, peace_rt_model::Workspace>,
) -> Self
{
let scope_builder = #scope_builder_name {
// profile_selection: ProfileNotSelected,
// flow_selection: FlowNotSelected,
// params_type_regs_builder:
// peace_rt_model::params::ParamsTypeRegsBuilder::<
// peace_rt_model::params::ParamsKeysImpl<
// peace_rt_model::params::KeyUnknown,
// peace_rt_model::params::KeyUnknown,
// peace_rt_model::params::KeyUnknown,
// >
// >::new(),
// workspace_params_selection: WorkspaceParamsNone,
// profile_params_selection: ProfileParamsNone,
// // === SingleProfileSingleFlow === //
// params_specs_provided: peace_params::ParamsSpecs::new()
#scope_field_values
};
Self {
output,
interruptibility: interruptible::Interruptibility::NonInterruptible,
workspace,
resources: peace_resource_rt::Resources::new(),
scope_builder,
}
}
}
}
}
mod scope_field_values {
use syn::{parse_quote, punctuated::Punctuated, FieldValue, Token};
use crate::cmd::{FlowCount, ProfileCount, Scope};
/// Appends profile / flow ID selection type parameters if applicable to the
/// given scope.
pub fn profile_and_flow_selection_push(
field_values: &mut Punctuated<FieldValue, Token![,]>,
scope: Scope,
) {
match scope.profile_count() {
ProfileCount::None => {}
ProfileCount::One | ProfileCount::Multiple => {
// Even for `ProfileCount::Multiple`, we will store the filter function in
// the profile selection.
field_values.push(parse_quote!(
profile_selection: crate::scopes::type_params::ProfileNotSelected
));
}
}
if scope.flow_count() == FlowCount::One {
field_values.push(parse_quote!(
flow_selection: crate::scopes::type_params::FlowNotSelected
));
}
}
/// Appends workspace / profile / flow params selection type parameters if
/// applicable to the given scope.
pub fn params_selection_push(
field_values: &mut Punctuated<FieldValue, Token![,]>,
scope: Scope,
) {
// Workspace params are supported by all scopes.
field_values.push(parse_quote! {
params_type_regs_builder:
peace_rt_model::params::ParamsTypeRegsBuilder::<
peace_rt_model::params::ParamsKeysImpl<
peace_rt_model::params::KeyUnknown,
peace_rt_model::params::KeyUnknown,
peace_rt_model::params::KeyUnknown,
>
>::new()
});
// Workspace params are supported by all scopes.
field_values.push(parse_quote!(
workspace_params_selection: crate::scopes::type_params::WorkspaceParamsNone
));
if scope.profile_params_supported() {
field_values.push(parse_quote!(
profile_params_selection: crate::scopes::type_params::ProfileParamsNone
));
}
if scope.flow_params_supported() {
field_values.push(parse_quote!(
flow_params_selection: crate::scopes::type_params::FlowParamsNone
));
}
}
}