/// <summary>
/// インデクサの引数リスト処理
/// </summary>
/// <param name="tokens"></param>
/// <param name="parent"></param>
/// <returns></returns>
private KecaknoahArgumentCallExpressionAstNode ParsePrimaryIndexerAccessExpression(Queue<KecaknoahToken> tokens, KecaknoahPrimaryExpressionAstNode parent)
{
var r = new KecaknoahArgumentCallExpressionAstNode();
r.Target = parent;
r.ExpressionType = KecaknoahOperatorType.IndexerAccess;
tokens.SkipLogicalLineBreak(); //TODO: 暗黙改行
if (tokens.CheckSkipToken(KecaknoahTokenType.BracketEnd)) return r;
while (true)
{
r.Arguments.Add(ParseExpression(tokens));
if (tokens.CheckSkipToken(KecaknoahTokenType.Comma)) continue;
tokens.SkipLogicalLineBreak(); //TODO: 暗黙改行
if (tokens.CheckSkipToken(KecaknoahTokenType.BracketEnd)) break;
throw new KecaknoahParseException(tokens.Peek().CreateErrorAt("メソッド呼び出しの引数リストが無効です。"));
}
return r;
}
/// <summary>
/// メンバーアクセス処理
/// </summary>
/// <param name="tokens"></param>
/// <param name="parent"></param>
/// <returns></returns>
private KecaknoahMemberAccessExpressionAstNode ParsePrimaryMemberAccessExpression(Queue<KecaknoahToken> tokens, KecaknoahPrimaryExpressionAstNode parent)
{
var mnt = tokens.Dequeue();
if (mnt.Type != KecaknoahTokenType.Identifer) throw new KecaknoahParseException(mnt.CreateErrorAt("有効なメンバー名を指定してください。"));
var r = new KecaknoahMemberAccessExpressionAstNode();
r.Target = parent;
r.ExpressionType = KecaknoahOperatorType.MemberAccess;
r.MemberName = mnt.TokenString;
return r;
}
/// <summary>
/// 一次式の処理
/// </summary>
/// <param name="tokens"></param>
/// <returns></returns>
private KecaknoahPrimaryExpressionAstNode ParsePrimaryExpression(Queue<KecaknoahToken> tokens)
{
var factor = ParseFactorExpression(tokens);
//tokens.SkipLogicalLineBreak();
var re = ParsePrimaryRecursiveExpression(tokens, factor);
if (re != factor) return re;
if (!tokens.CheckToken(KecaknoahTokenType.Increment, KecaknoahTokenType.Decrement)) return factor;
re = new KecaknoahPrimaryExpressionAstNode();
re.Target = factor;
if (tokens.CheckSkipToken(KecaknoahTokenType.Increment)) re.ExpressionType = KecaknoahOperatorType.Increment;
if (tokens.CheckSkipToken(KecaknoahTokenType.Decrement)) re.ExpressionType = KecaknoahOperatorType.Decrement;
return re;
}
/// <summary>
/// 再帰的に連続させられる一次式の処理
/// </summary>
/// <param name="tokens"></param>
/// <param name="parent"></param>
/// <returns></returns>
private KecaknoahPrimaryExpressionAstNode ParsePrimaryRecursiveExpression(Queue<KecaknoahToken> tokens, KecaknoahPrimaryExpressionAstNode parent)
{
var result = parent;
if (!tokens.CheckToken(KecaknoahTokenType.Period, KecaknoahTokenType.ParenStart, KecaknoahTokenType.BracketStart)) return result;
while (true)
{
if (tokens.CheckSkipToken(KecaknoahTokenType.Period))
{
result = ParsePrimaryMemberAccessExpression(tokens, result);
}
else if (tokens.CheckSkipToken(KecaknoahTokenType.ParenStart))
{
result = ParsePrimaryFunctionCallExpression(tokens, result);
}
else if (tokens.CheckSkipToken(KecaknoahTokenType.BracketStart))
{
result = ParsePrimaryIndexerAccessExpression(tokens, result);
}
else
{
break;
}
}
return result;
}
internal IList<KecaknoahILCode> PrecompileSuffixIncrement(KecaknoahPrimaryExpressionAstNode node)
{
var result = new List<KecaknoahILCode>();
result.AddRange(PrecompileExpression(node.Target));
result.Add(new KecaknoahILCode { Type = KecaknoahILCodeType.AsValue });
result.AddRange(PrecompileExpression(node.Target));
result.Add(new KecaknoahILCode { Type = KecaknoahILCodeType.PushInteger, IntegerValue = 1 });
result.Add(new KecaknoahILCode { Type = KecaknoahILCodeType.PlusAssign });
return result;
}
