/// <summary>
/// 標準的な引数の置き換えのディクショナリを返します
/// </summary>
/// <param name="minimumOccurance">置き換え対象とする変数の値の生起回数の条件</param>
/// <param name="targetTypes">置き換えの対象とする変数の値の型</param>
/// <param name="maxIdentifierLength">置き換える名前のプレフィックス部の最大長</param>
/// <returns></returns>
public VariableReplaceMap GetDefaultReplacement(int minimumOccurance, ScriptVariableType targetTypes, int maxIdentifierLength)
{
HashSet <ScriptVariable> replacement = new HashSet <ScriptVariable>(new VariableValueEqualityComparer());
bool replaced = true;
while (replaced)
{
replaced = false;
var none = this.GetOccuranceOfVariables(ScriptVariableType.List | targetTypes, VariableNamedState.AnyElementNamed, replacement);
var sub = none.Where(p => p.Key.IsTypeOf(targetTypes) && p.Value >= minimumOccurance).ToList();
if (sub.Any())
{
int maxOccur = sub.Max(p => p.Value);
foreach (var pair in sub.Where(p => p.Value == maxOccur))
{
if (replacement.Add(pair.Key))
{
replaced = true;
}
}
}
}
var one = this.GetOccuranceOfVariables(ScriptVariableType.List | targetTypes, VariableNamedState.AllElementsNamed, replacement);
var subOne = one.Where(p => p.Key.IsTypeOf(targetTypes) && !p.Key.IsTypeOf(ScriptVariableType.List) && p.Value >= minimumOccurance).ToList();
foreach (var pair in subOne)
{
if (replacement.Add(pair.Key))
{
replaced = true;
}
}
VariableReplaceMap ret = new VariableReplaceMap();
foreach (ScriptVariable v in replacement)
{
string abbrev = Parse.ScriptParser.ConvertStringIntoIdentifier(v.ToString());
string identifier = abbrev;
int index = 0;
while (ret.ContainsValue(identifier) || _replacements.ContainsValue(identifier))
{
index++;
identifier = abbrev + index.ToString();
}
ret.AddWithRename(v, identifier, maxIdentifierLength);
}
return(ret);
}
