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59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package interp
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import (
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"bytes"
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"fmt"
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"math/big"
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"strconv"
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"strings"
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"github.com/wader/fq/internal/mathex"
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"github.com/wader/fq/internal/stringsex"
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"github.com/wader/fq/pkg/bitio"
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"github.com/wader/fq/pkg/scalar"
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)
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func previewValue(v any, df scalar.DisplayFormat) string {
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switch vv := v.(type) {
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case bool:
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if vv {
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return "true"
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}
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return "false"
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case int:
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// TODO: DisplayFormat is weird
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return mathex.PadFormatInt(int64(vv), df.FormatBase(), true, 0)
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case int64:
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// TODO: DisplayFormat is weird
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return mathex.PadFormatInt(vv, df.FormatBase(), true, 0)
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case uint64:
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return mathex.PadFormatUint(vv, df.FormatBase(), true, 0)
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case float64:
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// TODO: float32? better truncated to significant digits?
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return strconv.FormatFloat(vv, 'g', -1, 64)
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case string:
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s := strconv.Quote(stringsex.TrimN(vv, 50, "..."))
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// TODO: hack for https://github.com/golang/go/issues/52062
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// 0x7f used to be escaped as \u007f in 1.18 and lower, was changed to \x7f
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// remove once 1.18 is not supported
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if !bytes.Contains([]byte(s), []byte{0x7f}) {
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return s
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}
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return strings.ReplaceAll(s, `\u007f`, `\x7f`)
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case nil:
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return "null"
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case bitio.Reader,
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Binary:
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return "raw bits"
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case *big.Int:
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return mathex.PadFormatBigInt(vv, df.FormatBase(), true, 0)
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case map[string]any:
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return "{}"
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case []any:
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return "[]"
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default:
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panic(fmt.Sprintf("unreachable %v (%T)", v, v))
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}
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}
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