private void CheckRightOperand(Token token, SpelNode operandExpression)
{
if (operandExpression == null)
{
throw InternalException(token.StartPos, SpelMessage.RIGHT_OPERAND_PROBLEM);
}
}
public SpelExpression(string expression, SpelNode ast, SpelParserOptions configuration)
{
_expression = expression;
_ast = ast;
_configuration = configuration;
}
private void Push(SpelNode newNode)
{
ConstructedNodes.Push(newNode);
}
private bool MaybeEatInlineListOrMap()
{
var t = PeekToken();
if (!PeekToken(TokenKind.LCURLY, true))
{
return(false);
}
if (t == null)
{
throw new InvalidOperationException("No token");
}
SpelNode expr = null;
var closingCurly = PeekToken();
if (PeekToken(TokenKind.RCURLY, true))
{
// empty list '{}'
if (closingCurly == null)
{
throw new InvalidOperationException("No token");
}
expr = new InlineList(t.StartPos, closingCurly.EndPos);
}
else if (PeekToken(TokenKind.COLON, true))
{
closingCurly = EatToken(TokenKind.RCURLY);
// empty map '{:}'
expr = new InlineMap(t.StartPos, closingCurly.EndPos);
}
else
{
var firstExpression = EatExpression();
// Next is either:
// '}' - end of list
// ',' - more expressions in this list
// ':' - this is a map!
if (PeekToken(TokenKind.RCURLY))
{
// list with one item in it
var elements = new List <SpelNode>
{
firstExpression
};
closingCurly = EatToken(TokenKind.RCURLY);
expr = new InlineList(t.StartPos, closingCurly.EndPos, elements.ToArray());
}
else if (PeekToken(TokenKind.COMMA, true))
{
// multi-item list
var elements = new List <SpelNode>
{
firstExpression
};
do
{
elements.Add(EatExpression());
}while (PeekToken(TokenKind.COMMA, true));
closingCurly = EatToken(TokenKind.RCURLY);
expr = new InlineList(t.StartPos, closingCurly.EndPos, elements.ToArray());
}
else if (PeekToken(TokenKind.COLON, true))
{
// map!
var elements = new List <SpelNode>
{
firstExpression,
EatExpression()
};
while (PeekToken(TokenKind.COMMA, true))
{
elements.Add(EatExpression());
EatToken(TokenKind.COLON);
elements.Add(EatExpression());
}
closingCurly = EatToken(TokenKind.RCURLY);
expr = new InlineMap(t.StartPos, closingCurly.EndPos, elements.ToArray());
}
else
{
throw InternalException(t.StartPos, SpelMessage.OOD);
}
}
ConstructedNodes.Push(expr);
return(true);
}
private void CheckOperands(Token token, SpelNode left, SpelNode right)
{
CheckLeftOperand(token, left);
CheckRightOperand(token, right);
}
private readonly SpelNode _node; // used only for error reporting
public TypedValueHolderValueRef(ITypedValue typedValue, SpelNode node)
{
_typedValue = typedValue;
_node = node;
}