Add codeLenses for evaluating queries

Signed-off-by: Tobias Guggenmos <[email protected]>

langserver/cache/cache_test.go

@@ -236,7 +236,7 @@ groups:
 					Line:      9.0,
 					Character: 0.0,
 				},
-				End: endOfLine(protocol.Position{
+				End: EndOfLine(protocol.Position{
 					Line:      10.0,
 					Character: 0.1,
 				}),

langserver/cache/position.go

@@ -126,8 +126,8 @@ func (d *DocumentHandle) yamlPositionToTokenPos(line int, column int, lineOffset
 	}
 }
 
-// endOfLine returns the end of the Line of the given protocol.Position.
-func endOfLine(p protocol.Position) protocol.Position {
+// EndOfLine returns the end of the Line of the given protocol.Position.
+func EndOfLine(p protocol.Position) protocol.Position {
 	return protocol.Position{
 		Line:      p.Line + 1,
 		Character: 0,

langserver/codeLens.go

@@ -14,12 +14,63 @@ package langserver
 
 import (
 	"context"
+	"fmt"
+	"net/url"
+	"strings"
 
 	"github.com/prometheus-community/promql-langserver/internal/vendored/go-tools/lsp/protocol"
+	"github.com/prometheus-community/promql-langserver/langserver/cache"
 )
 
 // CodeLens is required by the protocol.Server interface.
-func (s *server) CodeLens(_ context.Context, _ *protocol.CodeLensParams) ([]protocol.CodeLens, error) {
+func (s *server) CodeLens(_ context.Context, params *protocol.CodeLensParams) ([]protocol.CodeLens, error) {
 
-	return nil, nil
+	// Currently Code Lenses are only supported for VS Code
+	if s.initializeParams.ClientInfo.Name != "vscode" {
+		return nil, nil
+	}
+
+	promURL := s.metadataService.GetURL()
+
+	if promURL == "" {
+		return nil, nil
+	}
+
+	doc, err := s.cache.GetDocument(params.TextDocument.URI)
+	if err != nil {
+		return nil, nil
+	}
+
+	queries, err := doc.GetQueries()
+	if err != nil {
+		return nil, nil
+	}
+
+	codeLenses := make([]protocol.CodeLens, 0, len(queries))
+
+	for _, query := range queries {
+
+		pos, err := doc.PosToProtocolPosition(query.Pos)
+		if err != nil {
+			return nil, nil
+		}
+
+		qText := query.Content
+		qTextEncoded := url.QueryEscape(strings.TrimSpace(qText))
+		target := fmt.Sprint(promURL, "/graph?g0.expr=", qTextEncoded)
+
+		codeLenses = append(codeLenses, protocol.CodeLens{
+			Range: protocol.Range{
+				Start: pos,
+				End:   cache.EndOfLine(pos),
+			},
+			Command: protocol.Command{
+				Title:     "▶ PromQL Query: View in expression Browser",
+				Command:   "vscode-promql.openURL",
+				Arguments: []interface{}{target},
+			},
+		})
+	}
+
+	return codeLenses, nil
 }

langserver/hover.go

@@ -17,10 +17,8 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"go/token"
 	"log"
 	"net/http"
-	"net/url"
 	"strings"
 
 	"github.com/pkg/errors"
@@ -138,30 +136,6 @@ func (s *server) nodeToDocMarkdown(ctx context.Context, location *cache.Location
 		}
 	}
 
-	promURL := s.metadataService.GetURL()
-
-	if promURL != "" && !s.headless {
-		loc := *location
-
-		loc.Node = loc.Query.Ast
-
-		qText, err := location.Doc.GetSubstring(loc.Query.Pos+token.Pos(loc.Node.PositionRange().Start), loc.Query.Pos+token.Pos(loc.Node.PositionRange().End))
-		if err != nil {
-			return ""
-		}
-
-		qTextEncoded := url.QueryEscape(qText)
-
-		target := fmt.Sprint(promURL, "/graph?g0.expr=", qTextEncoded)
-
-		linkText := fmt.Sprintf("---\n[evaluate query](%s)\n\n", target)
-
-		_, err = ret.WriteString(linkText)
-		if err != nil {
-			return ""
-		}
-	}
-
 	return ret.String()
 }