json_helpers.hpp File Reference

JSON utility functions for configuration parsing. More...

#include <nlohmann/json.hpp>
#include <string>

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Typedefs
using	pfc::ui::json = nlohmann::json

Functions
json	pfc::ui::get_json_value (const json &j, const std::string &key, const std::string &section="")
	Helper function to get a JSON value from either flat or nested structure.

Detailed Description

JSON utility functions for configuration parsing.

This header provides helper functions for working with JSON configuration objects, particularly for handling both flat and nested JSON structures.

Author

OpenPFC Development Team

Date

2025

Function Documentation

get_json_value()

json pfc::ui::get_json_value ( const json &  j, const std::string &  key, const std::string &  section = ""  )

inline

Helper function to get a JSON value from either flat or nested structure.

Supports both flat access (j["Lx"]) and nested access (j["domain"]["Lx"]). Checks nested location first if the key doesn't exist at top level.

Parameters

j	JSON object to search
key	Key to look for
section	Optional section name (e.g., "domain", "timestepping")

Returns

JSON value if found, otherwise json(nullptr)

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