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use proc_macro2::Ident;
use syn::punctuated::Punctuated;
use syn::token::Paren;
use syn::{
Expr,
ExprCall,
ExprLit,
ExprMethodCall,
ExprPath,
GenericMethodArgument,
Lit,
MethodTurbofish,
Path,
Token,
};
pub trait ExprMethodCallExt
{
fn new(receiver: Expr, method: Ident, args: impl IntoIterator<Item = Expr>) -> Self;
fn with_turbofish(self, turbofish: MethodTurbofish) -> Self;
}
impl ExprMethodCallExt for ExprMethodCall
{
fn new(receiver: Expr, method: Ident, args: impl IntoIterator<Item = Expr>) -> Self
{
Self {
attrs: Vec::new(),
receiver: Box::new(receiver),
dot_token: <Token![.]>::default(),
method,
turbofish: None,
paren_token: Paren::default(),
args: Punctuated::from_iter(args),
}
}
fn with_turbofish(mut self, turbofish: MethodTurbofish) -> Self
{
self.turbofish = Some(turbofish);
self
}
}
pub trait ExprPathExt
{
fn new(path: Path) -> Self;
}
impl ExprPathExt for ExprPath
{
fn new(path: Path) -> Self
{
Self {
attrs: Vec::new(),
qself: None,
path,
}
}
}
pub trait MethodTurbofishExt
{
fn new(args: impl IntoIterator<Item = GenericMethodArgument>) -> Self;
}
impl MethodTurbofishExt for MethodTurbofish
{
fn new(args: impl IntoIterator<Item = GenericMethodArgument>) -> Self
{
Self {
colon2_token: <Token![::]>::default(),
lt_token: <Token![<]>::default(),
args: Punctuated::from_iter(args),
gt_token: <Token![>]>::default(),
}
}
}
pub trait ExprCallExt
{
fn new(function: Expr, args: impl IntoIterator<Item = Expr>) -> Self;
}
impl ExprCallExt for ExprCall
{
fn new(function: Expr, args: impl IntoIterator<Item = Expr>) -> Self
{
Self {
attrs: Vec::new(),
func: Box::new(function),
paren_token: Paren::default(),
args: Punctuated::from_iter(args),
}
}
}
pub trait ExprLitExt
{
fn new(lit: impl Into<Lit>) -> Self;
}
impl ExprLitExt for ExprLit
{
fn new(lit: impl Into<Lit>) -> Self
{
Self {
attrs: Vec::new(),
lit: lit.into(),
}
}
}
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