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//! # PythonExpr - Trait Implementations
//!
//! This module contains trait implementations for `PythonExpr`.
//!
//! ## Implemented Traits
//!
//! - `Display`
//!
//! 🤖 Generated with [SplitRS](https://github.com/cool-japan/splitrs)
use crate::lcnf::*;
use super::types::{FStringPart, PythonExpr};
use std::fmt;
impl fmt::Display for PythonExpr {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
PythonExpr::Lit(lit) => write!(f, "{}", lit),
PythonExpr::Var(name) => write!(f, "{}", name),
PythonExpr::BinOp(op, lhs, rhs) => write!(f, "({} {} {})", lhs, op, rhs),
PythonExpr::UnaryOp(op, expr) => {
if *op == "not" {
write!(f, "not {}", expr)
} else {
write!(f, "{}{}", op, expr)
}
}
PythonExpr::Call(func, args, kwargs) => {
write!(f, "{}(", func)?;
let mut first = true;
for a in args {
if !first {
write!(f, ", ")?;
}
write!(f, "{}", a)?;
first = false;
}
for (k, v) in kwargs {
if !first {
write!(f, ", ")?;
}
write!(f, "{}={}", k, v)?;
first = false;
}
write!(f, ")")
}
PythonExpr::Attr(obj, field) => write!(f, "{}.{}", obj, field),
PythonExpr::Subscript(obj, idx) => write!(f, "{}[{}]", obj, idx),
PythonExpr::Lambda(params, body) => {
write!(f, "lambda ")?;
for (i, p) in params.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}", p)?;
}
write!(f, ": {}", body)
}
PythonExpr::IfExpr(then_e, cond, else_e) => {
write!(f, "{} if {} else {}", then_e, cond, else_e)
}
PythonExpr::ListComp(expr, var, iter, cond) => {
write!(f, "[{} for {} in {}", expr, var, iter)?;
if let Some(c) = cond {
write!(f, " if {}", c)?;
}
write!(f, "]")
}
PythonExpr::DictComp(key, val, k_var, v_var, iter) => {
write!(
f,
"{{{}: {} for {}, {} in {}}}",
key, val, k_var, v_var, iter
)
}
PythonExpr::SetComp(expr, var, iter, cond) => {
write!(f, "{{{} for {} in {}", expr, var, iter)?;
if let Some(c) = cond {
write!(f, " if {}", c)?;
}
write!(f, "}}")
}
PythonExpr::GenExpr(expr, var, iter, cond) => {
write!(f, "({} for {} in {}", expr, var, iter)?;
if let Some(c) = cond {
write!(f, " if {}", c)?;
}
write!(f, ")")
}
PythonExpr::Tuple(elems) => {
if elems.is_empty() {
write!(f, "()")
} else if elems.len() == 1 {
write!(f, "({},)", elems[0])
} else {
write!(f, "(")?;
for (i, e) in elems.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}", e)?;
}
write!(f, ")")
}
}
PythonExpr::List(elems) => {
write!(f, "[")?;
for (i, e) in elems.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}", e)?;
}
write!(f, "]")
}
PythonExpr::Dict(pairs) => {
write!(f, "{{")?;
for (i, (k, v)) in pairs.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}: {}", k, v)?;
}
write!(f, "}}")
}
PythonExpr::Set(elems) => {
if elems.is_empty() {
write!(f, "set()")
} else {
write!(f, "{{")?;
for (i, e) in elems.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}", e)?;
}
write!(f, "}}")
}
}
PythonExpr::Await(expr) => write!(f, "await {}", expr),
PythonExpr::Yield(expr) => match expr {
Some(e) => write!(f, "yield {}", e),
None => write!(f, "yield"),
},
PythonExpr::YieldFrom(expr) => write!(f, "yield from {}", expr),
PythonExpr::Match(expr) => write!(f, "{}", expr),
PythonExpr::FString(parts) => {
write!(f, "f\"")?;
for part in parts {
match part {
FStringPart::Literal(s) => {
for c in s.chars() {
match c {
'"' => write!(f, "\\\"")?,
'{' => write!(f, "{{")?,
'}' => write!(f, "}}")?,
'\\' => write!(f, "\\\\")?,
'\n' => write!(f, "\\n")?,
c => write!(f, "{}", c)?,
}
}
}
FStringPart::Expr(e) => write!(f, "{{{}}}", e)?,
FStringPart::ExprWithFormat(e, spec) => write!(f, "{{{}:{}}}", e, spec)?,
}
}
write!(f, "\"")
}
PythonExpr::Walrus(name, expr) => write!(f, "({} := {})", name, expr),
PythonExpr::Star(expr) => write!(f, "*{}", expr),
PythonExpr::DoubleStar(expr) => write!(f, "**{}", expr),
PythonExpr::Slice(start, stop, step) => {
if let Some(s) = start {
write!(f, "{}", s)?;
}
write!(f, ":")?;
if let Some(s) = stop {
write!(f, "{}", s)?;
}
if let Some(s) = step {
write!(f, ":{}", s)?;
}
Ok(())
}
}
}
}