File code/old/JsonGrammar.php

class Tlf\Lexer\JsonGrammar

This is an incomplete grammar, mainly used for testing & building v0.5 of the lexer. It gets "quoted values" and nested arrays.

Constants

Properties

• `public $directives = [

    'file'=>[  
                                            'onStart'=>[  
            'rewind'=>1,  
            'then'=>[  
                ':object',  
                ':array',  
                ':whitespace',  
            ],  
        ],  
    ],  
  
    'object' => [  
        'start'=>'{',  
        'onStart'=>[  
            'buffer.clear'=>true,  
            'ast.new'=>[  
                '_setto'=>'root',  
                'type'=>'object',  
            ],  
        ],  
        'stop'=>'}',  
        'onStop'=>  
        [  
            'pop_head'=>true,  
            'pop_directive'=>true,  
            'buffer.clear'=>true,  
        ],  
  
        'then'=>[  
            ':key'=>[],  
            ':whitespace'=>[],  
        ]  
    ],  
  
    'array' => [   
        'start'=>'[',  
        'onStart'=>[  
            'buffer.clear'=>true,  
                            'ast.new'=>[  
                '_setto'=> 'root',  
                                    'type'=>"array",  
            ],  
            'then'=>[  
                                    ':array'=>[  
                    'onStart'=>[  
                        'buffer.clear'=>true,  
                                                    'ast.new'=>[  
                            '_addto'=>'value',  
                                                            'type'=>"array",  
                        ],  
                    ],  
                    'onStop'=>[  
                        'pop_head'=>true,  
                        'buffer.clear'=>true,  
                        'pop_directive'=>false,  
                        'then'=>[  
                            ':whitespace',  
                            ':comma',  
                            ':array.stop'=>[  
                                'onStart'=>[  
                                    'pop_directive'=>true,  
                                    'pop_head'=>false,  
                                                                                                                ]  
                            ],  
                        ]  
                    ],  
                ],  
                ':whitespace',  
                ':value'=>[  
                    'onStop'=>[  
                        'rewind'=>1,  
                        'this:appendValueToAst',  
                        'forward'=>1,  
                        'buffer.clear'=>true,  
  
                        'then'=>[  
                            ':whitespace',  
                            ':comma'=>[  
                                                                                                                                                                                                                                ],  
                            ':array.stop'=>[  
                                'onStart'=>[  
                                    'pop_head'=>false,  
                                    'pop_directive'=>true,  
                                    'rewind'=>1,  
                                                                        ]  
                            ],  
                        ],  
  
                    ],  
                ],  
                ':array.stop'=>[  
                    'onStart'=>[  
                        'pop_head'=>false,  
                        'pop_directive'=>true,  
                        'rewind'=>1,  
                                                ]  
                ],  
            ],  
        ],  
        'stop'=>']',  
        'onStop'=>[  
            'pop_head'=>true,  
            'pop_directive'=>true,  
            'buffer.clear'=>true,  
        ],  
  
    ],  
  
  
    'key'=>[  
                                'start' => ["'", '"'],  
            'onStart'=>[  
                'buffer.clear',  
            ],  
        'match'=>'/^$1([a-zA-Z0-9_\-]+)/',  
        'stop'=>'/$1$/',  
        'onStop'=>[  
                                                            'previous'=>'key',  
            'pop_directive'=>true,  
        ],  
  
        'then'=>[  
            ':whitespace',  
            ':colon'=>[  
            ],  
        ]  
    ],  
  
    'value'=>[  
        'is'=>[  
                                            ':str_value',  
        ],  
    ],  
  
  
  
            'str_value'=>[  
        'start' => [  
                "'",  
                '"',  
            ],  
        'onStart'=>[  
            'buffer.clear',  
        ],  
                                'match'=>[['/((?<!\\\\)[^' ,1, '])+/']],  
                    'stop'=>[['/[^\\\\]',1,'$/']],  
        'onStop'=>[  
                                                                            'buffer.clear'=>true,  
  
                            'then'=>[  
                ':comma'=>[  
                ],  
                ':whitespace',  
            ]  
        ],  
    ],  
  
    'comma'=>[  
        'start'=>',',  
        'onStart'=>[  
            'buffer.clear'=>true,  
                                            'pop_directive'=>true,  
        ],  
    ],  
  
    'colon'=>[  
        'match'=> ':',  
        'then'=> [  
            ':whitespace'=> [  
  
            ],  
            ':value'=>[  
                'then'=>[  
                    ':comma'=>[  
                        'then'=>[  
                            ':key',  
                            ':object.stop'=>[  
                                'bubble'=>true,  
                            ],  
                        ]  
                    ],  
  
                ],  
            ],  
        ],  
    ],  
    'whitespace'=>[  
                                            'match'=>'/^\s+$/i',  
        'onStop'=>[  
            'buffer.clear'=>true,  
        ],  
    ],  
  

  ];`

Methods

• public function getNamespace()
• public function getAstClass():string
• public function onLexerStart($lexer,$file,$token)
• public function appendValueToAst($lexer, $ast, $token)