95 lines
2.7 KiB
Rust
95 lines
2.7 KiB
Rust
//! Extensions for `Builder` structure required for item rendering.
|
|
|
|
use itertools::Itertools;
|
|
use test_utils::mark;
|
|
|
|
use crate::{item::Builder, CompletionContext};
|
|
|
|
pub(super) enum Params {
|
|
Named(Vec<String>),
|
|
Anonymous(usize),
|
|
}
|
|
|
|
impl Params {
|
|
pub(super) fn len(&self) -> usize {
|
|
match self {
|
|
Params::Named(xs) => xs.len(),
|
|
Params::Anonymous(len) => *len,
|
|
}
|
|
}
|
|
|
|
pub(super) fn is_empty(&self) -> bool {
|
|
self.len() == 0
|
|
}
|
|
}
|
|
|
|
impl Builder {
|
|
pub(super) fn should_add_parems(&self, ctx: &CompletionContext) -> bool {
|
|
if !ctx.config.add_call_parenthesis {
|
|
return false;
|
|
}
|
|
if ctx.use_item_syntax.is_some() {
|
|
mark::hit!(no_parens_in_use_item);
|
|
return false;
|
|
}
|
|
if ctx.is_pattern_call {
|
|
mark::hit!(dont_duplicate_pattern_parens);
|
|
return false;
|
|
}
|
|
if ctx.is_call {
|
|
return false;
|
|
}
|
|
|
|
// Don't add parentheses if the expected type is some function reference.
|
|
if let Some(ty) = &ctx.expected_type {
|
|
if ty.is_fn() {
|
|
mark::hit!(no_call_parens_if_fn_ptr_needed);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Nothing prevents us from adding parentheses
|
|
true
|
|
}
|
|
|
|
pub(super) fn add_call_parens(
|
|
mut self,
|
|
ctx: &CompletionContext,
|
|
name: String,
|
|
params: Params,
|
|
) -> Builder {
|
|
if !self.should_add_parems(ctx) {
|
|
return self;
|
|
}
|
|
|
|
let cap = match ctx.config.snippet_cap {
|
|
Some(it) => it,
|
|
None => return self,
|
|
};
|
|
// If not an import, add parenthesis automatically.
|
|
mark::hit!(inserts_parens_for_function_calls);
|
|
|
|
let (snippet, label) = if params.is_empty() {
|
|
(format!("{}()$0", name), format!("{}()", name))
|
|
} else {
|
|
self = self.trigger_call_info();
|
|
let snippet = match (ctx.config.add_call_argument_snippets, params) {
|
|
(true, Params::Named(params)) => {
|
|
let function_params_snippet =
|
|
params.iter().enumerate().format_with(", ", |(index, param_name), f| {
|
|
f(&format_args!("${{{}:{}}}", index + 1, param_name))
|
|
});
|
|
format!("{}({})$0", name, function_params_snippet)
|
|
}
|
|
_ => {
|
|
mark::hit!(suppress_arg_snippets);
|
|
format!("{}($0)", name)
|
|
}
|
|
};
|
|
|
|
(snippet, format!("{}(…)", name))
|
|
};
|
|
self.lookup_by(name).label(label).insert_snippet(cap, snippet)
|
|
}
|
|
}
|