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validator.proto
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validator.proto
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// Copyright 2016 Michal Witkowski. All Rights Reserved.
// See LICENSE for licensing terms.
// Protocol Buffers extensions for defining auto-generateable validators for messages.
// TODO(mwitkow): Add example.
syntax = "proto2";
package validator;
import "google/protobuf/descriptor.proto";
option go_package = "validator";
// TODO(mwitkow): Email [email protected] to get an extension ID.
extend google.protobuf.FieldOptions {
optional FieldValidator field = 65020;
}
message FieldValidator {
// Uses a Golang RE2-syntax regex to match the field contents.
optional string regex = 1;
// Field value of integer strictly greater than this value.
optional int64 int_gt = 2;
// Field value of integer strictly smaller than this value.
optional int64 int_lt = 3;
// Used for nested message types, requires that the message type exists.
optional bool msg_exists = 4;
// Human error specifies a user-customizable error that is visible to the user.
optional string human_error = 5;
// Field value of double strictly greater than this value.
// Note that this value can only take on a valid floating point
// value. Use together with float_epsilon if you need something more specific.
optional double float_gt = 6;
// Field value of double strictly smaller than this value.
// Note that this value can only take on a valid floating point
// value. Use together with float_epsilon if you need something more specific.
optional double float_lt = 7;
// Field value of double describing the epsilon within which
// any comparison should be considered to be true. For example,
// when using float_gt = 0.35, using a float_epsilon of 0.05
// would mean that any value above 0.30 is acceptable. It can be
// thought of as a {float_value_condition} +- {float_epsilon}.
// If unset, no correction for floating point inaccuracies in
// comparisons will be attempted.
optional double float_epsilon = 8;
// Floating-point value compared to which the field content should be greater or equal.
optional double float_gte = 9;
// Floating-point value compared to which the field content should be smaller or equal.
optional double float_lte = 10;
// Used for string fields, requires the string to be not empty (i.e different from "").
optional bool string_not_empty = 11;
// Repeated field with at least this number of elements.
optional int64 repeated_count_min = 12;
// Repeated field with at most this number of elements.
optional int64 repeated_count_max = 13;
// Field value of length greater than this value.
optional int64 length_gt = 14;
// Field value of length smaller than this value.
optional int64 length_lt = 15;
// Field value of integer strictly equal this value.
optional int64 length_eq = 16;
}