Method parseOffsetCommand

parser/parser.go:536–564

parseOffsetCommand - Return ast.OffsetCommand created from tokens and validate the syntax Example of input parsable to the ast.LimitCommand: OFFSET 10

()

// Example of input parsable to the ast.LimitCommand:
// OFFSET 10
func (parser *Parser) parseOffsetCommand() (ast.Command, error) {
	// token.OFFSET already at current position in parser
	offsetCommand := &ast.OffsetCommand{Token: parser.currentToken}

	// token.OFFSET no longer needed
	parser.nextToken()

	err := validateToken(parser.currentToken.Type, []token.Type{token.LITERAL})
	if err != nil {
		return nil, err
	}

	count, err := strconv.Atoi(parser.currentToken.Literal)
	if err != nil {
		return nil, err
	}
	if count < 0 {
		return nil, &ArithmeticLessThanZeroParserError{variable: "offset"}
	}

	offsetCommand.Count = count

	// Skip token.IDENT
	parser.nextToken()

	parser.skipIfCurrentTokenIsSemicolon()

	return offsetCommand, nil
}

// parseJoinCommand - Return ast.JoinCommand created from tokens and validate the syntax
//