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namespace VQDR.Expression {
/**
* Represents a variable.
*/
public struct Variable {
public int min_val;
public int max_val;
public int current_val;
public Variable (int min = 0, int max = 0, int current = 0) {
this.max_val = max;
this.min_val = min;
this.current_val = current;
}
[CCode (cname = "vqdr_expression_variable_copy")]
public Variable.copy (Variable other) {
this.max_val = other.max_val;
this.min_val = other.min_val;
this.current_val = other.current_val;
}
public int compare (Variable other) {
if (this.current_val > other.current_val) {
return -1;
} else if (this.current_val < other.current_val) {
return 1;
} else {
if (this.max_val > other.max_val) {
return -1;
} else if (this.max_val < other.max_val) {
return 1;
} else {
if (this.min_val > other.min_val) {
return -1;
} else if (this.min_val < other.min_val) {
return 1;
} // End min_val comp.
} // End max_val comp
} // End current_val Comp
return 0; // They are exacly the same.
}
/**
* Compares two Variables.
*
* This is the same as @c compare. It is an alias to the same C function.
*/
[CCode (cname = "vqdr_expression_variable_equals")]
public static extern int static_compare (Variable a, Variable b);
/**
* Is this instance equal to the other?
*/
public bool equals (Variable other) {
return equals_values (other.min_val, other.max_val, other.current_val);
}
public bool equals_values (int min, int max, int current) {
return (max == this.max_val) &&
(min == this.min_val) &&
(current == this.current_val);
}
public string to_string () {
StringBuilder s = new StringBuilder ();
s.append("(Variable: ");
s.append_printf ("(max_val: %i, ", max_val);
s.append_printf ("min_val: %i, ", max_val);
s.append_printf ("current_val: %i)", current_val);
s.append(")");
return s.str;
}
}
}
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