niceforbear/sparser

parser of string

v0.1.2 2016-06-19 09:46 UTC

Requires

• php: >=5.6.0

MIT

• niceforbear

• parser
• tool
• string
• basic

README

Install

Via Composer

$ composer require niceforbear/sparser

Usage

$context = new Context();
$user_in = "\$input equals '4' or \$input equals 'four'";
$reader = new StringReader($user_in);
$scanner = new Scanner($reader, $context);

while ($scanner->nextToken() != Scanner::EOF) {
    print $scanner->token();
    print "\t{$scanner->char_no()}";
    print "\t{$scanner->getTypeString()}\n";
}

$input = 'five';
$statement = "( \$input equals 'five')";

$engine = new MarkParse($statement);
$result = $engine->evaluate($input);
print "input: $input evaluating: $statement\n";
if($result){
    print "true!\n";
}else{
    print "false!\n";
}

Testing

Tests unavailable.

Contributing

Please see CONTRIBUTING for details.

Credits

• niceforbear

License

The MIT License (MIT). Please see License File for more information.

About EBNF

• expr ::= operand (orExpr | andExpr) *
• operand ::= ( '(' expr ')' | | variable ) (eqExpr) *
• orExpr ::= 'or' operand
• andExpr ::= 'and' operand
• eqExpr ::= 'equals' operand
• variable ::= '$'