Example #1
0
ExprAST *Parser::parsePrimary ()
{
	// At the top level, we have to have either an identifier of some kind,
	// a number, or an open paren.  We might also have a unary minus sign, handle
	// that specially right here.
	switch (currentToken)
	{
	case TOKEN_IDENTIFIER_FUNCTION:
		return parseFunctionIdentifierExpr ();
	case TOKEN_IDENTIFIER_CONSTANT:
		return parseConstantIdentifierExpr ();
	case TOKEN_IDENTIFIER_VARIABLE:
		return parseVariableIdentifierExpr ();
	case TOKEN_NUMBER:
		return parseNumberExpr ();
	case TOKEN_PAREN_OPEN:
		return parseOpenParenExpr ();
	case TOKEN_OPERATOR:
		if (strToken == "-")
			return parseUnaryMinusExpr ();
		// Fall through for any other operator
	default:
		error (boost::format ("Expecting an expression, got %1% instead!") %
		       formatToken ());
		return NULL;
	}
}
Example #2
0
std::unique_ptr<ExprAST> Parser::parsePrimary(s_cursor_t &it, const s_cursor_t &end) {
    switch (_curTok) {
        case tok_identifier:
            return parseIdentifierExpr(it, end);
        case tok_number:
            return parseNumberExpr(it, end);
        case '(':
            return parseParenExpr(it, end);
        default:
            return Error("unknown token when expecting an expression");
    }
}