mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
Francisco Geiman Thiesen
2b532489cc
* First implementation of the conversion logic. - Not yet tested - Not yet compiled - Not yet used in ondemand array/object/etc... * Adding at_path to ondemand arrays * Adding at_path to array, document and value. * Adding at_path to ondemand object as well. Pending: - Building - Adding tests for each of the on-demand classes usage of at_path - Properly documenting the subset of json path that is currently supported. * Adding a simple json_path test to on_demand * Still trying to compile the ondemand_readme_examples test with the at_path() call * Fixing linking issues with array::at_path * Fixing issues with the path -> pointer conversion and removing comments * Adding a clone of json_pointer to test json_path extensively * Adding ondemand_json_path_tests (all tests passing) * Adding documentation for at_path() * Removing some newlines * Removing simdjson_result from the return type of the string conversion function. Now json_path_to_pointer_conversion returns a std::string. * Fixing typo * Making string concatenation explicit to avoid ubuntu gcc12 issue with -O3 flag. * Addressing latest reviews * Addressing latest reviews
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
#pragma once
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#ifndef SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H
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#define SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H
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#ifndef SIMDJSON_CONDITIONAL_INCLUDE
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#define SIMDJSON_GENERIC_ONDEMAND_JSON_PATH_TO_POINTER_CONVERSION_INL_H
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#include "simdjson/generic/ondemand/json_path_to_pointer_conversion.h"
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#endif // SIMDJSON_CONDITIONAL_INCLUDE
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namespace simdjson {
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namespace SIMDJSON_IMPLEMENTATION {}
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namespace ondemand {
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simdjson_inline std::string json_path_to_pointer_conversion(std::string_view json_path) {
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if (json_path.empty() || (json_path.front() != '.' && json_path.front() != '[') {
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return "-1"; // Sentinel value to be handled as an error by the caller.
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}
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std::string result;
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// Reserve space to reduce allocations, adjusting for potential increases due
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// to escaping.
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result.reserve(json_path.size() * 2);
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// Skip the initial '.' as it's assumed every path starts with it.
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size_t i = 0;
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while (i < json_path.length()) {
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if (json_path[i] == '.') {
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result += '/';
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} else if (json_path[i] == '[') {
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result += '/';
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++i; // Move past the '['
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while (i < json_path.length() && json_path[i] != ']') {
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if (json_path[i] == '~') {
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result += "~0";
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} else if (json_path[i] == '/') {
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result += "~1";
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} else {
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result += json_path[i];
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}
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++i;
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}
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if (i == json_path.length() || json_path[i] != ']') {
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return "-1"; // Returning sentinel value that will be handled as an error by the caller
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}
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} else {
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if (json_path[i] == '~') {
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result += "~0";
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} else if (json_path[i] == '/') {
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result += "~1";
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} else {
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result += json_path[i];
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}
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}
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++i;
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}
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return simdjson_result<std::string>(result);
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}
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} // namespace ondemand
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} // namespace SIMDJSON_IMPLEMENTATION
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} // namespace simdjson
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#endif // SIMDJSON_ONDEMAND_GENERIC_JSON_PATH_TO_POINTER_CONVERSION_INL_H
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