//==============================================================================
ExpressionASTNode* ExpressionParser::ParseUnaryExpression_(CallerType& caller)
{
Token token = WaitForTokenReady_(caller);
if (IsUnaryOperator(token.type)
|| token == OP_INC
|| token == OP_DEC)
{
ExpressionASTNode* node = new ExpressionASTNode(token);
ExpressionASTNode* root = node;
token = WaitForTokenReady_(caller);
while (IsUnaryOperator(token.type)
|| token == OP_INC
|| token == OP_DEC)
{
node->SetLeft(new ExpressionASTNode(token));
node = node->GetLeft();
token = WaitForTokenReady_(caller);
}
tokenStack_.push_back(token);
node->SetLeft(ParsePostfixExpression_(caller));
return root;
}
else
{
tokenStack_.push_back(token);
return ParsePostfixExpression_(caller);
}
}
ASTUnaryOp* ParseUnaryOperation(MemoryArena* arena, Lexer* lex) {
assert(IsUnaryOperator(lex->token));
lex->nextToken();
auto expr = ParseExpr(arena, lex);
auto op = TokenToUnaryOp(lex->token);
auto unaryOperation = arena->alloc<ASTUnaryOp>(op, expr);
return unaryOperation;
}
