module pind.samples.ja.exceptions.exceptions_3;

import std.stdio;

void indent(int level) {
    foreach (i; 0 .. level * 2) {
        write(' ');
    }
}

void entering(string functionName, int level) {
    indent(level);
    writeln("▶ ", functionName, "'s first line");
}

void exiting(string functionName, int level) {
    indent(level);
    writeln("◁ ", functionName, "'s last line");
}

void main() {
    entering("main", 0);
    makeOmelet();
    eatOmelet();
    exiting("main", 0);
}

void makeOmelet() {
    entering("makeOmelet", 1);
    prepareAll();
    cookEggs();
    cleanAll();
    exiting("makeOmelet", 1);
}

void eatOmelet() {
    entering("eatOmelet", 1);
    exiting("eatOmelet", 1);
}

void prepareAll() {
    entering("prepareAll", 2);
    prepareEggs();
    prepareButter();
    preparePan();
    exiting("prepareAll", 2);
}

void cookEggs() {
    entering("cookEggs", 2);
    exiting("cookEggs", 2);
}

void cleanAll() {
    entering("cleanAll", 2);
    exiting("cleanAll", 2);
}

void prepareEggs() {
    entering("prepareEggs", 3);
    exiting("prepareEggs", 3);
}

void prepareButter() {
    entering("prepareButter", 3);
    exiting("prepareButter", 3);
}

void preparePan() {
    entering("preparePan", 3);
    exiting("preparePan", 3);
}