Tutorials (basic syntax)

String

You can define in C-style string by enclosing the string in double quotes (").
- If you want to put a double quotation in a string, you need to put \" in the string.
- \" and \r and \n, \\ are the same way as C.

You can define in BASIC-style string by enclosing the string in single quotes (').
- If you want to put a single quotation in a string, you need to put '' in the string.

If a string contains new line, it is valid.

Example

"SELECT * 
 FROM tab "

Variables

A variable name has to start dollar $ sign.

Example

$x 
$value

Predicate(Like calling a function)

Predicate is the ADP assessment unit.Write the following.

　predicate_name(argment list)

Example

print("Hello World")

Term

Strings and numbers, variables and predicate are called term.

Goal cluase（Like a function body parts）

Goal cluase has terms separated by commas "," and terminated by a semicolon ";".
Goal clause is evaluated in the description of the order of source files by adp command.

Example

,print("Hello World");

You input the source file above to adp command, then the command 'Hello World' on the screen.

Horn clause（Like a function definition）

　Horn clause has a horn head and a goal cluase. The horn head begins from a "+" charactor and has horn_clause_name and argment lists.

　+horn_clause_name(argment list)goal_cluase

Example

+horn_name($x,$y),print($x, '=', $y);

Comments

A comment begins from a '#' character and ends to the end of the line.

,printn("Hello World"); # Here is a comment. 

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