Scanner Rules

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Scanner Rules

Collection: Add Parser Rules

• Gives Meaning to Tokens
• Constructs AST through Rules:

class_declaration_statement:
        class_modifiers T_CLASS |dd00dd|{ $<num>$ = CG(zend_lineno); }|
        T_STRING extends_from implements_list backup_doc_comment '{' class_statement_list '}'
            { $$ = *zend_ast_create_decl*(ZEND_AST_CLASS, $1, $<num>3, $7, *zend_ast_get_str*($4), $5, $6, $9, NULL); }



  case 167:
#line 493 "/home/derick/dev/php/php-src.git/Zend/zend_language_parser.y"
    |dd00dd|{ (yyval.num) = CG(zend_lineno); }|
    break;

  case 168:
#line 495 "/home/derick/dev/php/php-src.git/Zend/zend_language_parser.y"
    { (yyval.ast) = *zend_ast_create_decl*(ZEND_AST_CLASS, (yyvsp[(1) - (10)].num), (yyvsp[(3) - (10)].num), (yyvsp[(7) - (10)].str), *zend_ast_get_str*((yyvsp[(4) - (10)].ast)), (yyvsp[(5) - (10)].ast), (yyvsp[(6) - (10)].ast), (yyvsp[(9) - (10)].ast), NULL); }
    break;