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go/internal/lsp/testdata/summary.txt.golden
Muir Manders 5ae4576c3a internal/lsp: improve completion after accidental keywords
Sometimes the prefix of the thing you want to complete is a keyword.
For example:

variance := 123
fmt.Println(var<>)

In this case the parser produces an *ast.BadExpr which breaks
completion. We now repair this BadExpr by replacing it with
an *ast.Ident named "var".

We also repair empty decls using a similar approach. This fixes cases
like:

var typeName string
type<> // want to complete to "typeName"

We also fix accidental keywords in selectors, such as:

foo.var<>

The parser produces a phantom "_" in place of the keyword, so we swap
it back for an *ast.Ident named "var".

In general, though, accidental keywords wreak havoc on the AST so we
can only do so much. There are still many cases where a keyword prefix
breaks completion. Perhaps in the future the parser can be
cursor/in-progress-edit aware and turn accidental keywords into
identifiers.

Fixes golang/go#34332.

PS I tweaked nodeContains() to include n.End() to fix a test failure
against tip related to a change to go/parser. When a syntax error is
present, an *ast.BlockStmt's End() is now set to the block's final
statement's End() (earlier than what it used to be). In order for the
cursor pos to test "inside" the block in this case I had to relax the
End() comparison.

Change-Id: Ib45952cf086cc974f1578298df3dd12829344faa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/209438
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-12-03 04:30:02 +00:00

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-- summary --
CompletionsCount = 219
CompletionSnippetCount = 51
UnimportedCompletionsCount = 3
DeepCompletionsCount = 5
FuzzyCompletionsCount = 7
RankedCompletionsCount = 26
CaseSensitiveCompletionsCount = 4
DiagnosticsCount = 22
FoldingRangesCount = 2
FormatCount = 6
ImportCount = 7
SuggestedFixCount = 1
DefinitionsCount = 38
TypeDefinitionsCount = 2
HighlightsCount = 37
ReferencesCount = 7
RenamesCount = 22
PrepareRenamesCount = 8
SymbolsCount = 1
SignaturesCount = 22
LinksCount = 6