Merge pull request #578 from moosq/get-hover-content-from-definition

Get hover content from definition

internal/lsp/hover.go

@@ -2,27 +2,34 @@ package lsp
 
 import (
 	"context"
-	"fmt"
-	"github.com/nokia/ntt/internal/log"
+	"strings"
+
 	"github.com/nokia/ntt/internal/lsp/protocol"
 	"github.com/nokia/ntt/ttcn3"
 	"github.com/nokia/ntt/ttcn3/ast"
 )
 
 func (s *Server) hover(ctx context.Context, params *protocol.HoverParams) (*protocol.Hover, error) {
 	var (
-		file = string(params.TextDocument.URI.SpanURI())
-		line = int(params.Position.Line) + 1
-		col  = int(params.Position.Character) + 1
+		file    = string(params.TextDocument.URI.SpanURI())
+		line    = int(params.Position.Line) + 1
+		col     = int(params.Position.Character) + 1
+		comment string
 	)
 
 	tree := ttcn3.ParseFile(file)
 	x := tree.ExprAt(tree.Pos(line, col))
 	if x == nil {
-		log.Debug(fmt.Sprintf("No expression at %s:%d:%d\n", file, line, col))
+		return nil, nil
+	}
+	for _, def := range tree.LookupWithDB(x, &s.db) {
+		if firstTok := ast.FirstToken(def.Node); firstTok == nil {
+			continue
+		} else {
+			// make line breaks conform to markdown spec
+			comment = strings.ReplaceAll(firstTok.Comments(), "\n", "  \n")
+		}
 	}
-
-	comment := ast.FirstToken(x).Comments()
 
 	hoverContents := protocol.MarkupContent{Kind: "markdown", Value: comment}
 	hover := &protocol.Hover{Contents: hoverContents}