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internal/lsp: add formatting functions to some common lsp protocol types

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These are intended only for debug printing and error messages for the most
common protocol types that you need to know the contents of.

Change-Id: I1f0f7b17b4b12c3b26096b46808bce37c3722ced
Reviewed-on: https://go-review.googlesource.com/c/150037
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This commit is contained in:
Ian Cottrell 2018-11-16 12:16:36 -05:00
parent f87c222f14
commit 8190738e3d
1 changed files with 39 additions and 0 deletions
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39
internal/lsp/protocol/printers.go Normal file
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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file contains formatting functions for types that
// are commonly printed in debugging information.
// They are separated from their types and gathered here as
// they are hand written and not generated from the spec.
// They should not be relied on for programmatic use (their
// results should never be parsed for instance) but are meant
// for temporary debugging and error messages.
package protocol
import (
"fmt"
)
func (p Position) Format(f fmt.State, c rune) {
fmt.Fprintf(f, "%d", int(p.Line))
if p.Character >= 0 {
fmt.Fprintf(f, ":%d", int(p.Character))
}
}
func (r Range) Format(f fmt.State, c rune) {
switch {
case r.Start == r.End || r.End.Line < 0:
fmt.Fprintf(f, "%v", r.Start)
case r.End.Line == r.Start.Line:
fmt.Fprintf(f, "%v¦%d", r.Start, int(r.End.Character))
default:
fmt.Fprintf(f, "%v¦%v", r.Start, r.End)
}
}
func (l Location) Format(f fmt.State, c rune) {
fmt.Fprintf(f, "%s:%v", l.URI, l.Range)
}