72 lines
2.3 KiB
Go
72 lines
2.3 KiB
Go
// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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package validator
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import (
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"reflect"
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"time"
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)
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// EqualTo validates that a value equals another value using deep equality.
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// Special handling for time.Time to compare instants rather than internal structure.
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func EqualTo(other any) ValidatorFunc {
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return func(value any) *ValidationError {
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if !areEqual(value, other) {
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return newValidationError(ErrorCodeInvalidFormat, "values must match")
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}
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return nil
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}
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}
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// NotEqualTo validates that a value does not equal another value using deep equality.
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// Special handling for time.Time to compare instants rather than internal structure.
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func NotEqualTo(other any) ValidatorFunc {
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return func(value any) *ValidationError {
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if areEqual(value, other) {
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return newValidationError(ErrorCodeInvalidFormat, "values must not match")
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}
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return nil
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}
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}
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// areEqual compares two values for equality with special handling for time.Time.
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func areEqual(a, b any) bool {
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// Dereference both values
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aVal, aIsNil := dereferenceValue(a)
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bVal, bIsNil := dereferenceValue(b)
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// If both are nil, they're equal
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if aIsNil && bIsNil {
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return true
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}
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// If only one is nil, they're not equal
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if aIsNil || bIsNil {
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return false
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}
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// Special handling for time.Time
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aTime, aIsTime := aVal.(time.Time)
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bTime, bIsTime := bVal.(time.Time)
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if aIsTime && bIsTime {
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// Use time.Time.Equal() which compares the instant, ignoring location and monotonic clock
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return aTime.Equal(bTime)
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}
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// Fall back to reflect.DeepEqual for all other types
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return reflect.DeepEqual(aVal, bVal)
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}
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