102 lines
3.2 KiB
Rust
102 lines
3.2 KiB
Rust
//! FIXME: write short doc here
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mod completion_item;
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mod completion_context;
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mod presentation;
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mod complete_dot;
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mod complete_record;
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mod complete_pattern;
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mod complete_fn_param;
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mod complete_keyword;
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mod complete_snippet;
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mod complete_qualified_path;
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mod complete_unqualified_path;
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mod complete_postfix;
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mod complete_macro_in_item_position;
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mod complete_trait_impl;
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#[cfg(test)]
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mod test_utils;
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use ra_ide_db::RootDatabase;
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use crate::{
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completion::{
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completion_context::CompletionContext,
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completion_item::{CompletionKind, Completions},
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},
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FilePosition,
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};
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pub use crate::completion::completion_item::{
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CompletionItem, CompletionItemKind, InsertTextFormat,
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};
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#[derive(Clone, Debug, PartialEq, Eq)]
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pub struct CompletionConfig {
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pub enable_postfix_completions: bool,
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pub add_call_parenthesis: bool,
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pub add_call_argument_snippets: bool,
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}
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impl Default for CompletionConfig {
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fn default() -> Self {
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CompletionConfig {
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enable_postfix_completions: true,
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add_call_parenthesis: true,
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add_call_argument_snippets: true,
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}
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}
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}
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/// Main entry point for completion. We run completion as a two-phase process.
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///
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/// First, we look at the position and collect a so-called `CompletionContext.
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/// This is a somewhat messy process, because, during completion, syntax tree is
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/// incomplete and can look really weird.
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///
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/// Once the context is collected, we run a series of completion routines which
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/// look at the context and produce completion items. One subtlety about this
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/// phase is that completion engine should not filter by the substring which is
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/// already present, it should give all possible variants for the identifier at
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/// the caret. In other words, for
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///
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/// ```no-run
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/// fn f() {
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/// let foo = 92;
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/// let _ = bar<|>
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/// }
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/// ```
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///
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/// `foo` *should* be present among the completion variants. Filtering by
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/// identifier prefix/fuzzy match should be done higher in the stack, together
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/// with ordering of completions (currently this is done by the client).
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pub(crate) fn completions(
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db: &RootDatabase,
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position: FilePosition,
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config: &CompletionConfig,
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) -> Option<Completions> {
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let ctx = CompletionContext::new(db, position, config)?;
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let mut acc = Completions::default();
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complete_fn_param::complete_fn_param(&mut acc, &ctx);
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complete_keyword::complete_expr_keyword(&mut acc, &ctx);
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complete_keyword::complete_use_tree_keyword(&mut acc, &ctx);
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complete_snippet::complete_expr_snippet(&mut acc, &ctx);
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complete_snippet::complete_item_snippet(&mut acc, &ctx);
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complete_qualified_path::complete_qualified_path(&mut acc, &ctx);
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complete_unqualified_path::complete_unqualified_path(&mut acc, &ctx);
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complete_dot::complete_dot(&mut acc, &ctx);
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complete_record::complete_record(&mut acc, &ctx);
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complete_pattern::complete_pattern(&mut acc, &ctx);
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complete_postfix::complete_postfix(&mut acc, &ctx);
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complete_macro_in_item_position::complete_macro_in_item_position(&mut acc, &ctx);
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complete_trait_impl::complete_trait_impl(&mut acc, &ctx);
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// Reorder completion items if there is a sort_option
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acc.sort(&ctx);
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Some(acc)
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}
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