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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
option java_package = "org.chromium.components.optimization_guide.proto";
option java_outer_classname = "ModelExecutionProto";
package optimization_guide.proto;
import "components/optimization_guide/proto/descriptors.proto";
// FieldExtractor defines a method for extracting information from model output
// and storing it in a proto field of bool, numeric, enum, or string type. The
// following algorithm is applied to extract to the field:
// 1. capturing_regex is executed against the model output to produce a
// string value. If the regex fails to match, the field is not written and
// no error is generated.
// 2. The string value is replaced by the result of looking up the string
// value in the translation_map, if the value exists in the map.
// 3. A conversion may be applied to the string value based on the type of
// the specified proto field.
// - String values are retained as-is.
// - Enum values are converted from an "ENUM_NAME" string to the enum
// value.
// - Boolean values are converted from the case-insensitive strings
// "true" and "false".
// - Numeric conversions use the relevant StringTo* function for the
// type as defined in //base/strings/string_number_conversions.h.
// 4. The value is saved in output_field if the field was found, is a
// supported type, and the conversion succeeded. Otherwise an error is
// generated.
message FieldExtractor {
// The field to fill with the extracted value.
optional ProtoField output_field = 1;
// A regex that captures the relevant content from the model output in the
// first capturing group.
optional string capturing_regex = 2;
// An optional map to translate from captured strings to strings
// convertible to the proto field type.
map<string, string> translation_map = 3;
}
message FieldwiseParserConfig {
repeated FieldExtractor field_extractors = 1;
}
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