40 lines
833 B
Go
40 lines
833 B
Go
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package grammar
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import (
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"fmt"
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)
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func ValidateParameterCount(params []Param, expected int) error {
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if len(params) < expected {
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return fmt.Errorf("%w: expected %d got %d", ErrAmbiguousParamCount, expected, len(params))
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}
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return nil
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}
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type Param struct {
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String *string `parser:"@String | @RawString"`
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Int *int `parser:"| @Int"`
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Float *float64 `parser:"| @Float"`
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}
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func (p Param) AsString() (string, error) {
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if p.String == nil {
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return "", fmt.Errorf("string is nil %w", ErrTypeMismatch)
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}
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return *p.String, nil
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}
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func (p Param) AsInt() (int, error) {
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if p.Int == nil {
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return 0, fmt.Errorf("int is nil %w", ErrTypeMismatch)
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}
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return *p.Int, nil
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}
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func (p Param) AsFloat() (float64, error) {
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if p.Float == nil {
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return 0, fmt.Errorf("float is nil %w", ErrTypeMismatch)
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}
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return *p.Float, nil
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}
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