LSP-server-example

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package handlers
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import (
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	"encoding/json"
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	"log/slog"
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	"lsp-server/internal/protocol"
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)
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const HoverMethod = "textDocument/hover"
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type Hover struct {
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	fileURIToContents *map[string][]string
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}
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func NewHover(fileURIToContents *map[string][]string) *Hover {
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	return &Hover{fileURIToContents: fileURIToContents}
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}
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func (h Hover) Call(params json.RawMessage) (any, error) {
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	slog.Info("received hover method")
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	hParams, err := h.parseParams(params)
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	if err != nil {
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		slog.Error("Error to parse hover params")
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		return nil, err
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	}
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	slog.Debug("hover params", slog.Any("params", *hParams))
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	hoverItem := h.createHoverItem(hParams)
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	return hoverItem, nil
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}
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func (h Hover) createHoverItem(hParams *protocol.HoverParams) *protocol.Hover {
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	hoverItem := &protocol.Hover{
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		Contents: protocol.MarkupContent{
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			Kind:  protocol.Markdown,
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			Value: "some hover",
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		},
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		Range: protocol.Range{
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			Start: protocol.Position{
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				Line:      hParams.Position.Line,
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				Character: hParams.Position.Character,
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			},
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			End: protocol.Position{
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				Line:      hParams.Position.Line,
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				Character: hParams.Position.Character,
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			},
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		},
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	}
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	return hoverItem
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}
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func (h Hover) parseParams(params json.RawMessage) (*protocol.HoverParams, error) {
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	var hoverParams protocol.HoverParams
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	if err := json.Unmarshal(params, &hoverParams); err != nil {
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		return nil, err
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	}
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	return &hoverParams, nil
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}
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