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use std::fmt::{Display, Formatter, Result};
use super::{FloatTy, IntTy, UIntTy};
use crate::mir::{ArithLogOp, Constant, Expression, ExpressionKind, Offset, StreamAccessKind, Type};
impl Display for Expression {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match &self.kind {
ExpressionKind::LoadConstant(c) => write!(f, "{}", c),
ExpressionKind::Function(name, args) => {
write!(f, "{}(", name)?;
if let Type::Function {
args: arg_tys,
ret: res,
} = &self.ty
{
let zipped: Vec<(&Type, &Expression)> = arg_tys.iter().zip(args.iter()).collect();
if let Some((last, prefix)) = zipped.split_last() {
prefix
.iter()
.fold(Ok(()), |accu, (t, a)| accu.and_then(|()| write!(f, "{}: {}, ", a, t)))?;
write!(f, "{}: {}", last.1, last.0)?;
}
write!(f, ") -> {}", res)
} else {
unreachable!("The type of a function needs to be a function.")
}
},
ExpressionKind::Convert { expr } => write!(f, "cast<{},{}>({})", expr.ty, self.ty, expr),
ExpressionKind::Tuple(elems) => write_delim_list(f, elems, "(", ")", ","),
ExpressionKind::Ite {
condition,
consequence,
alternative,
..
} => {
write!(f, "if {} then {} else {}", condition, consequence, alternative)
},
ExpressionKind::ArithLog(op, args) => {
write_delim_list(f, args, &format!("{}(", op), &format!(") : [{}]", self.ty), ",")
},
ExpressionKind::Default { expr, default, .. } => write!(f, "{}.default({})", expr, default),
ExpressionKind::StreamAccess {
target: sr,
access_kind: access,
parameters: para,
} => {
assert!(para.is_empty());
match access {
StreamAccessKind::Sync => write!(f, "{}", sr),
StreamAccessKind::Hold => write!(f, "{}.hold()", sr),
StreamAccessKind::Offset(offset) => write!(f, "{}.offset({})", sr, offset),
StreamAccessKind::SlidingWindow(wr) | StreamAccessKind::DiscreteWindow(wr) => write!(f, "{}", wr),
}
},
ExpressionKind::ParameterAccess(sr, idx) => {
write!(f, "Parameter({}, {})", sr, idx)
},
ExpressionKind::TupleAccess(expr, num) => write!(f, "{}.{}", expr, num),
}
}
}
impl Display for Constant {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
Constant::Bool(b) => write!(f, "{}", b),
Constant::UInt(u) => write!(f, "{}", u),
Constant::Int(i) => write!(f, "{}", i),
Constant::Float(fl) => write!(f, "{}", fl),
Constant::Str(s) => write!(f, "{}", s),
}
}
}
impl Display for ArithLogOp {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
use ArithLogOp::*;
match self {
Not => write!(f, "!"),
Neg => write!(f, "~"),
Add => write!(f, "+"),
Sub => write!(f, "-"),
Mul => write!(f, "*"),
Div => write!(f, "/"),
Rem => write!(f, "%"),
Pow => write!(f, "^"),
And => write!(f, "∧"),
Or => write!(f, "∨"),
Eq => write!(f, "="),
Lt => write!(f, "<"),
Le => write!(f, "≤"),
Ne => write!(f, "≠"),
Ge => write!(f, "≥"),
Gt => write!(f, ">"),
BitNot => write!(f, "~"),
BitAnd => write!(f, "&"),
BitOr => write!(f, "|"),
BitXor => write!(f, "^"),
Shl => write!(f, "<<"),
Shr => write!(f, ">>"),
}
}
}
impl Display for Type {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
Type::Float(_) => write!(f, "Float{}", self.size().expect("Floats are sized.").0 * 8),
Type::UInt(_) => write!(f, "UInt{}", self.size().expect("UInts are sized.").0 * 8),
Type::Int(_) => write!(f, "Int{}", self.size().expect("Ints are sized.").0 * 8),
Type::Function { args, ret } => write_delim_list(f, args, "(", &format!(") -> {}", ret), ","),
Type::Tuple(elems) => write_delim_list(f, elems, "(", ")", ","),
Type::String => write!(f, "String"),
Type::Bytes => write!(f, "Bytes"),
Type::Option(inner) => write!(f, "Option<{}>", inner),
Type::Bool => write!(f, "Bool"),
}
}
}
impl Display for IntTy {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
IntTy::Int8 => write!(f, "8"),
IntTy::Int16 => write!(f, "16"),
IntTy::Int32 => write!(f, "32"),
IntTy::Int64 => write!(f, "64"),
}
}
}
impl Display for UIntTy {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
UIntTy::UInt8 => write!(f, "8"),
UIntTy::UInt16 => write!(f, "16"),
UIntTy::UInt32 => write!(f, "32"),
UIntTy::UInt64 => write!(f, "64"),
}
}
}
impl Display for FloatTy {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
FloatTy::Float32 => write!(f, "32"),
FloatTy::Float64 => write!(f, "64"),
}
}
}
pub(crate) fn write_delim_list<T: Display>(
f: &mut Formatter<'_>,
v: &[T],
pref: &str,
suff: &str,
join: &str,
) -> Result {
write!(f, "{}", pref)?;
if let Some(e) = v.first() {
write!(f, "{}", e)?;
for b in &v[1..] {
write!(f, "{}{}", join, b)?;
}
}
write!(f, "{}", suff)?;
Ok(())
}
impl Display for Offset {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
Offset::Past(u) => write!(f, "{}", u),
_ => unimplemented!(),
}
}
}
