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//! This file provides snippet completions, like `pd` => `eprintln!(...)`.
use ide_db::helpers::SnippetCap;
use syntax::T;
use crate::{
context::PathCompletionContext, item::Builder, CompletionContext, CompletionItem,
CompletionItemKind, CompletionKind, Completions,
};
fn snippet(ctx: &CompletionContext, cap: SnippetCap, label: &str, snippet: &str) -> Builder {
let mut item = CompletionItem::new(CompletionKind::Snippet, ctx.source_range(), label);
item.insert_snippet(cap, snippet).kind(CompletionItemKind::Snippet);
item
}
pub(crate) fn complete_expr_snippet(acc: &mut Completions, ctx: &CompletionContext) {
if ctx.function_def.is_none() {
return;
}
let can_be_stmt = match ctx.path_context {
Some(PathCompletionContext { is_trivial_path: true, can_be_stmt, .. }) => can_be_stmt,
_ => return,
};
let cap = match ctx.config.snippet_cap {
Some(it) => it,
None => return,
};
if can_be_stmt {
snippet(ctx, cap, "pd", "eprintln!(\"$0 = {:?}\", $0);").add_to(acc);
snippet(ctx, cap, "ppd", "eprintln!(\"$0 = {:#?}\", $0);").add_to(acc);
}
}
pub(crate) fn complete_item_snippet(acc: &mut Completions, ctx: &CompletionContext) {
if !ctx.expects_item()
|| ctx.previous_token_is(T![unsafe])
|| ctx.path_qual().is_some()
|| ctx.has_impl_or_trait_prev_sibling()
{
return;
}
if ctx.has_visibility_prev_sibling() {
return; // technically we could do some of these snippet completions if we were to put the
// attributes before the vis node.
}
let cap = match ctx.config.snippet_cap {
Some(it) => it,
None => return,
};
let mut item = snippet(
ctx,
cap,
"tmod (Test module)",
"\
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn ${1:test_name}() {
$0
}
}",
);
item.lookup_by("tmod");
item.add_to(acc);
let mut item = snippet(
ctx,
cap,
"tfn (Test function)",
"\
#[test]
fn ${1:feature}() {
$0
}",
);
item.lookup_by("tfn");
item.add_to(acc);
let item = snippet(ctx, cap, "macro_rules", "macro_rules! $1 {\n\t($2) => {\n\t\t$0\n\t};\n}");
item.add_to(acc);
}
#[cfg(test)]
mod tests {
use expect_test::{expect, Expect};
use crate::{tests::filtered_completion_list, CompletionKind};
fn check(ra_fixture: &str, expect: Expect) {
let actual = filtered_completion_list(ra_fixture, CompletionKind::Snippet);
expect.assert_eq(&actual)
}
#[test]
fn completes_snippets_in_expressions() {
check(
r#"fn foo(x: i32) { $0 }"#,
expect![[r#"
sn pd
sn ppd
"#]],
);
}
#[test]
fn should_not_complete_snippets_in_path() {
check(r#"fn foo(x: i32) { ::foo$0 }"#, expect![[""]]);
check(r#"fn foo(x: i32) { ::$0 }"#, expect![[""]]);
}
}
|
