56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
// d2lsp contains functions useful for IDE clients
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package d2lsp
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import (
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"fmt"
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"strings"
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"oss.terrastruct.com/d2/d2ir"
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"oss.terrastruct.com/d2/d2parser"
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"oss.terrastruct.com/d2/lib/memfs"
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)
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func GetFieldRefs(path, index string, fs map[string]string, key string) (refs []d2ir.Reference, _ error) {
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if _, ok := fs[index]; !ok {
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return nil, fmt.Errorf(`"%s" not found`, index)
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}
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r := strings.NewReader(fs[index])
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ast, err := d2parser.Parse(path, r, nil)
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if err != nil {
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return nil, err
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}
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mfs, err := memfs.New(fs)
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if err != nil {
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return nil, err
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}
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mk, err := d2parser.ParseMapKey(key)
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if err != nil {
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return nil, err
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}
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if mk.Key == nil {
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return nil, fmt.Errorf(`"%s" is invalid`, key)
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}
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ir, _, err := d2ir.Compile(ast, &d2ir.CompileOptions{
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FS: mfs,
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})
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if err != nil {
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return nil, err
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}
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var f *d2ir.Field
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curr := ir
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for _, p := range mk.Key.Path {
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f = curr.GetField(p.Unbox().ScalarString())
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if f == nil {
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return nil, nil
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}
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curr = f.Map()
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}
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for _, ref := range f.References {
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refs = append(refs, ref)
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}
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return refs, nil
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}
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