private IExpression[] MakeStatements(string line)
{
// 関数ステートメント
var statement = Lexer.SplitStatement(line);
var statements = new IExpression[statement.Length];
var length = statements.Length;
for (var i = 0; i < length; ++i)
{
if (Lexer.IsEvaluate(statement[i]))
{
// 括弧内を評価する
statements[i] = MakeExpression(statement[i]);
}
else if (Lexer.IsString(statement[i]))
{
// クオート済みテキスト
statements[i] = new TextExpression(RemoveDoubleQuote(statement[i]));
}
else
{
// プレーンテキスト
statements[i] = new TextExpression(statement[i]);
}
}
return(statements);
}
public IExpression MakeExpression(string line)
{
IExpression statement = null;
var token = RemoveScope(line);
// トークンに分解する
var tokens = Lexer.SplitToken(token);
// トークンの種類を判別する
if (tokens[0] == "$if")
{
// if文
var value = Lexer.MakeIfAndWhileStatement(tokens);
var ifexpressions = new List <IfSubExpression>();
var length = value.Length;
for (var i = 0; i < length; i += 3)
{
IfSubExpression ifexpression;
if (value[i] == "$if" || value[i] == "elseif")
{
var cells = Lexer.SplitToken(value[i + 1]);
IExpression[] statements;
var expression = MakeExpression(cells);
if (i + 2 < length)
{
statements = MakeStatements(RemoveScope(value[i + 2]));
}
else
{
statements = new IExpression[0];
}
ifexpression = new IfSubExpression(expression, statements);
}
else if (value[i] == "else")
{
// 常に成り立つ条件式をつける
IExpression[] statements;
IExpression expression = new ValueExpression(new Value(true));
if (i + 1 < length)
{
statements = MakeStatements(RemoveScope(value[i + 1]));
}
else
{
statements = new IExpression[0];
}
ifexpression = new IfSubExpression(expression, statements);
}
else
{
// パースエラー : if ～ elseif ～ elseの対応がおかしい
continue;
}
// コレクションに追加
ifexpressions.Add(ifexpression);
}
statement = new IfExpression(ifexpressions.ToArray());
}
else if (tokens[0] == "$for")
{
// for文
var expressions = new IExpression[3];
var value = Lexer.MakeForAndForeachStatement(tokens);
for (var i = 0; i < 3; i++)
{
var cells = Lexer.SplitToken(value[i + 1]);
expressions[i] = MakeExpression(cells);
}
var statements = MakeStatements(RemoveScope(value[4]));
statement = new ForExpression(expressions, statements);
}
else if (tokens[0] == "$foreach")
{
// foreach文
var expressions = new IExpression[3];
var value = Lexer.MakeForAndForeachStatement(tokens);
for (var i = 0; i < 2; i++)
{
var cells = Lexer.SplitToken(value[i + 1]);
expressions[i] = MakeExpression(cells);
}
var statements = MakeStatements(RemoveScope(value[3]));
statement = new ForeachExpression(expressions, statements);
}
else if (tokens[0] == "$while")
{
// while文
var value = Lexer.MakeIfAndWhileStatement(tokens);
var cells = Lexer.SplitToken(RemoveScope(value[1]));
var expression = MakeExpression(cells);
// ステートメントを作成する
var statements = MakeStatements(RemoveScope(value[2]));
statement = new WhileExpression(expression, statements);
}
else if (tokens[0] == "$switch")
{
// switch文
}
else
{
// 式文
var name = tokens[0];
// 引数を作成する
var arguments = Lexer.MakeFunctionArguments(tokens);
if (arguments != null)
{
var length = arguments.Length;
var expressions = new IExpression[length];
for (var i = 0; i < length; i++)
{
if (arguments[i].Length != 0)
{
var cells = Lexer.SplitToken(arguments[i]);
expressions[i] = MakeExpression(cells);
}
else
{
expressions[i] = new ValueExpression(new Value());
}
}
statement = new FunctionExpression(name, expressions);
}
else
{
if (Lexer.IsExpression(tokens))
{
statement = MakeExpression(tokens);
}
else if (Lexer.IsVariable(token))
{
statement = new EvaluateExpression(token);
}
else
{
statement = new TextExpression("{" + token + "}");
}
}
}
return(statement);
}