niceforbear/sparser

parser of string

String Parser

Install

Via Composer, _(*1)

``` bash $ composer require niceforbear/sparser, <sub>(*2)</sub>

## Usage

``` php
$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., <sub>(*3)</sub>

Contributing

Please see CONTRIBUTING for details., <sub>(*4)</sub>

Credits

• niceforbear

License

The MIT License (MIT). Please see License File for more information., <sub>(*5)</sub>

About EBNF

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