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// Copyright (C) 2019-2024 Aleo Systems Inc.
// This file is part of the Leo library.
// The Leo library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// The Leo library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
use crate::Flattener;
use leo_ast::{Function, ProgramReconstructor, ProgramScope, Statement, StatementReconstructor};
impl ProgramReconstructor for Flattener<'_> {
/// Flattens a program scope.
fn reconstruct_program_scope(&mut self, input: ProgramScope) -> ProgramScope {
self.program = Some(input.program_id.name.name);
ProgramScope {
program_id: input.program_id,
structs: input.structs.into_iter().map(|(i, c)| (i, self.reconstruct_struct(c))).collect(),
mappings: input.mappings.into_iter().map(|(id, mapping)| (id, self.reconstruct_mapping(mapping))).collect(),
functions: input.functions.into_iter().map(|(i, f)| (i, self.reconstruct_function(f))).collect(),
consts: input
.consts
.into_iter()
.map(|(i, c)| match self.reconstruct_const(c) {
(Statement::Const(declaration), _) => (i, declaration),
_ => unreachable!("`reconstruct_const` can only return `Statement::Const`"),
})
.collect(),
span: input.span,
}
}
/// Flattens a function's body
fn reconstruct_function(&mut self, function: Function) -> Function {
// Set when the function is an async function.
self.is_async = function.variant.is_async_function();
// Flatten the function body.
let mut block = self.reconstruct_block(function.block).0;
// Get all of the guards and return expression.
let returns = self.clear_early_returns();
// Fold the return statements into the block.
self.fold_returns(&mut block, returns);
Function {
annotations: function.annotations,
variant: function.variant,
identifier: function.identifier,
input: function.input,
output: function.output,
output_type: function.output_type,
block,
span: function.span,
id: function.id,
}
}
}