add missing file

internal/language_features/variables.go

@@ -0,0 +1,34 @@
+package languagefeatures
+
+import (
+	"fmt"
+
+	lsplocal "github.com/mrjosh/helm-ls/internal/lsp"
+	"github.com/mrjosh/helm-ls/internal/tree-sitter/gotemplate"
+	"github.com/mrjosh/helm-ls/internal/util"
+	sitter "github.com/smacker/go-tree-sitter"
+	lsp "go.lsp.dev/protocol"
+)
+
+type VariablesFeature struct {
+	*GenericDocumentUseCase
+}
+
+func NewVariablesFeature(genericDocumentUseCase *GenericDocumentUseCase) *VariablesFeature {
+	return &VariablesFeature{
+		GenericDocumentUseCase: genericDocumentUseCase,
+	}
+}
+
+func (f *VariablesFeature) AppropriateForNode(currentNodeType string, parentNodeType string, node *sitter.Node) bool {
+	return currentNodeType == gotemplate.NodeTypeIdentifier && parentNodeType == gotemplate.NodeTypeVariable
+}
+
+func (f *VariablesFeature) Definition() (result []lsp.Location, err error) {
+	variableName := f.GenericDocumentUseCase.NodeContent()
+	definitionNode := lsplocal.GetVariableDefinition(variableName, f.GenericDocumentUseCase.ParentNode, f.Document.Content)
+	if definitionNode == nil {
+		return []lsp.Location{}, fmt.Errorf("Could not find definition for %s. Variable definition not found", variableName)
+	}
+	return []lsp.Location{{URI: f.Document.URI, Range: lsp.Range{Start: util.PointToPosition(definitionNode.StartPoint())}}}, nil
+}