How to store data into a Map from json file

[PrithviDuggirala]

What is the issue you have?

I'm having a json file as follows:

[
{
"top__DOT__comp_ac_Multiplier_Mux01__DOT__H11TW040L_UCVCSND2X010_Z_s": [
"sa0",
"sa1"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__INDEX02_Outp_s": [
"sa0",
"sa1"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__comp_H11TW040L_UCVCSND2X010__DOT__NOT00_Outp_s": [
"sa0"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__comp_H11TW040L_UCVCSND2X010__DOT__NOT01_Outp_s": [
"sa0"
]
},
{
"top__DOT__comp_ac_Multiplier_Mux01__DOT__H11TW040L_UCVCSAORI1X010_Z_s": [
"sa0",
"sa1"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__INDEX00_Outp_s": [
"sa1"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__INDEX01_Outp_s": [
"sa1"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__comp_H11TW040L_UCVCSAORI1X010__DOT__BAND_Outp_s": [
"sa0"
],
"top__DOT__comp_ac_Multiplier_Mux01__DOT__comp_H11TW040L_UCVCSAORI1X010__DOT__NOT_Outp_s": [
"sa0"
]
}
]

It is a list of dictionaries. I want to read this file and store each dictionary into a map of vectors. Later I have to iterate over the each dictionary and extract key and values(which is a list in this case).

I have used the following code to do this:

class faults{

map<string, vector<string>> myMap;

};

std::ifstream myinput("fault_list.json");
auto j = json::parse(myinput);
std::vector fault = j;

I'm facing the following error:
error: conversion from 'nlohmann::basic_json<>' to non-scalar type 'std::vector' requested
std::vector fault = j;
^

Operating System: Unix
Compiler: g++ (GCC) 8.2.0

I used the json.hpp file from here
https://github.com/nlohmann/json/releases/tag/v3.9.1

Kindly help me with the issue.