Documentation

https://github.com/phonetworks/pho-compiler/blob/master/src/Pho/Compiler/V1/FieldAnalyzer.php

        $dirs = [
            "md5" => false,
            "now" => false,
            "default" => Compiler::NO_VALUE_SET
        ];
        $constraints = [
            "minLength" => null, // string
            "maxLength" => null, // string
            "uuid" => null, // string
            "regex" => null, // string
            "greaterThan" => null, // int
            "lessThan" => null, // int
            "format" => null, // string
        ];

see https://github.com/phonetworks/pho-framework/blob/master/src/Pho/Framework/FieldHelper.php for processing of these constraints.

https://github.com/webmozart/assert is used to assert constraints.

https://github.com/vlucas/valitron is used to assert format constraints. Possible formats are:

                         "numeric",
                         "ip",
                         "email",
                         "url",
                         "creditCard"

https://github.com/phonetworks/pho-compiler/blob/master/src/Pho/Compiler/V1/NodePropertiesArgumentAnalyzer.php

protected static $prototype_functions = [
        "expires"=>"setExpires", 
        "volatile"=>"setVolatile",
        "revisionable"=>"setRevisionable",
        "editable"=>"setEditable"
    ];

https://github.com/phonetworks/pho-compiler/blob/master/src/Pho/Compiler/V1/EdgePropertiesArgumentAnalyzer.php

    protected static $prototype_functions = [
        "binding"=>"setBinding",
        "multiplicable"=>"setMultiplicable",
        "persistent"=>"setPersistent",
        "consumer"=>"setConsumer",
        "notifier"=>"setNotifier",
        "subscriber"=>"setSubscriber",
        "formative"=>"setFormative"
    ];

https://github.com/phonetworks/pho-compiler/blob/master/src/Pho/Compiler/V1/EdgeNodesArgumentAnalyzer.php

    protected static $prototype_functions = [
        "head"=>"setHeadNodes", 
        "head_exclusive"=>"setHeadNodesOnly", 
        "tail"=>"setTailNode"
    ];

File -> Entity -> {Node, Edge} ..... -> Directive (with Arguments, see below) -> Field (see below)

Directive has Arguments Node => Edges, Permissions, Properties Edge => Labels, Nodes, Properties

Fields have Directives, and Constraints (see above)