41 lines
842 B
Go
41 lines
842 B
Go
package picker
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import (
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"fmt"
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"github.com/pocketbase/pocketbase/tools/tokenizer"
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)
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var Modifiers = map[string]ModifierFactoryFunc{}
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type ModifierFactoryFunc func(args ...string) (Modifier, error)
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type Modifier interface {
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// Modify executes the modifier and returns a new modified value.
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Modify(value any) (any, error)
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}
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func initModifer(rawModifier string) (Modifier, error) {
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t := tokenizer.NewFromString(rawModifier)
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t.Separators('(', ')', ',', ' ')
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t.IgnoreParenthesis(true)
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parts, err := t.ScanAll()
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if err != nil {
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return nil, err
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}
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if len(parts) == 0 {
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return nil, fmt.Errorf("invalid or empty modifier expression %q", rawModifier)
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}
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name := parts[0]
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args := parts[1:]
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factory, ok := Modifiers[name]
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if !ok {
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return nil, fmt.Errorf("missing or invalid modifier %q", name)
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}
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return factory(args...)
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}
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