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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::{Identifier, Node, NodeID};
use leo_span::Span;
use serde::{Deserialize, Serialize};
use std::fmt;
mod access;
pub use access::*;
mod array;
pub use array::*;
mod binary;
pub use binary::*;
mod call;
pub use call::*;
mod cast;
pub use cast::*;
mod struct_init;
pub use struct_init::*;
mod err;
pub use err::*;
mod ternary;
pub use ternary::*;
mod tuple;
pub use tuple::*;
mod unary;
pub use unary::*;
mod unit;
pub use unit::*;
mod literal;
pub use literal::*;
pub mod locator;
pub use locator::*;
/// Expression that evaluates to a value.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum Expression {
/// A struct access expression, e.g. `Foo.bar`.
Access(AccessExpression),
/// An array expression, e.g., `[true, false, true, false]`.
Array(ArrayExpression),
/// A binary expression, e.g., `42 + 24`.
Binary(BinaryExpression),
/// A call expression, e.g., `my_fun(args)`.
Call(CallExpression),
/// A cast expression, e.g., `42u32 as u8`.
Cast(CastExpression),
/// An expression of type "error".
/// Will result in a compile error eventually.
Err(ErrExpression),
/// An identifier.
Identifier(Identifier),
/// A literal expression.
Literal(Literal),
/// A locator expression, e.g., `hello.aleo/foo`.
Locator(LocatorExpression),
/// An expression constructing a struct like `Foo { bar: 42, baz }`.
Struct(StructExpression),
/// A ternary conditional expression `cond ? if_expr : else_expr`.
Ternary(TernaryExpression),
/// A tuple expression e.g., `(foo, 42, true)`.
Tuple(TupleExpression),
/// An unary expression.
Unary(UnaryExpression),
/// A unit expression e.g. `()`
Unit(UnitExpression),
}
impl Node for Expression {
fn span(&self) -> Span {
use Expression::*;
match self {
Access(n) => n.span(),
Array(n) => n.span(),
Binary(n) => n.span(),
Call(n) => n.span(),
Cast(n) => n.span(),
Err(n) => n.span(),
Identifier(n) => n.span(),
Literal(n) => n.span(),
Locator(n) => n.span(),
Struct(n) => n.span(),
Ternary(n) => n.span(),
Tuple(n) => n.span(),
Unary(n) => n.span(),
Unit(n) => n.span(),
}
}
fn set_span(&mut self, span: Span) {
use Expression::*;
match self {
Access(n) => n.set_span(span),
Array(n) => n.set_span(span),
Binary(n) => n.set_span(span),
Call(n) => n.set_span(span),
Cast(n) => n.set_span(span),
Identifier(n) => n.set_span(span),
Literal(n) => n.set_span(span),
Locator(n) => n.set_span(span),
Err(n) => n.set_span(span),
Struct(n) => n.set_span(span),
Ternary(n) => n.set_span(span),
Tuple(n) => n.set_span(span),
Unary(n) => n.set_span(span),
Unit(n) => n.set_span(span),
}
}
fn id(&self) -> NodeID {
use Expression::*;
match self {
Access(n) => n.id(),
Array(n) => n.id(),
Binary(n) => n.id(),
Call(n) => n.id(),
Cast(n) => n.id(),
Identifier(n) => n.id(),
Literal(n) => n.id(),
Locator(n) => n.id(),
Err(n) => n.id(),
Struct(n) => n.id(),
Ternary(n) => n.id(),
Tuple(n) => n.id(),
Unary(n) => n.id(),
Unit(n) => n.id(),
}
}
fn set_id(&mut self, id: NodeID) {
use Expression::*;
match self {
Access(n) => n.set_id(id),
Array(n) => n.set_id(id),
Binary(n) => n.set_id(id),
Call(n) => n.set_id(id),
Cast(n) => n.set_id(id),
Identifier(n) => n.set_id(id),
Literal(n) => n.set_id(id),
Locator(n) => n.set_id(id),
Err(n) => n.set_id(id),
Struct(n) => n.set_id(id),
Ternary(n) => n.set_id(id),
Tuple(n) => n.set_id(id),
Unary(n) => n.set_id(id),
Unit(n) => n.set_id(id),
}
}
}
impl fmt::Display for Expression {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use Expression::*;
match &self {
Access(n) => n.fmt(f),
Array(n) => n.fmt(f),
Binary(n) => n.fmt(f),
Call(n) => n.fmt(f),
Cast(n) => n.fmt(f),
Err(n) => n.fmt(f),
Identifier(n) => n.fmt(f),
Literal(n) => n.fmt(f),
Locator(n) => n.fmt(f),
Struct(n) => n.fmt(f),
Ternary(n) => n.fmt(f),
Tuple(n) => n.fmt(f),
Unary(n) => n.fmt(f),
Unit(n) => n.fmt(f),
}
}
}