C-Compiler-training/grammar.txt at master · khomyakov42/C-Compiler-training · GitHub

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050167
primary_expression = IDENTIFIER | CONSTANT | STRING_LITERAL | '(' expression ')' ;

postfix_expression =
		primary_expression |
		postfix_expression '[' expression ']' |
		postfix_expression '(' [argument_expression_list] ')' |
		postfix_expression ('->' | '.') IDENTIFIER |
		postfix_expression ('++' | '--')

argument_expression_list = assignment_expression [',' argument_expression_list] ;

unary_expression =
		postfix_expression |
		('++' | '--') unary_expression |
	ÕÕÕ	unary_operator unary_expression |
		unary_operator ( '(' type_name ')' )+ unary_expression|
		SIZEOF ( unary_expression ) | ( '(' type_name ')' ) ;

unary_operator =
		'&' | '*' | '+' | '-' | '~' | '!' ;

multiplicative_expression =
		cast_expression [('*' | '/' | '%') multiplicative_expression] ;

additive_expression =
		multiplicative_expression [('+' | '-') additive_expression] ;

shift_expression =
		additive_expression [('<<' | '>>') shift_expression] ;

relational_expression = shift_expression [('<' | '>' | '<=' | '>=') relational_expression] ;

equality_expression = relational_expression [('==' | '!=') equality_expression] ;

and_expression = equality_expression ['&' and_expression] ;

exclusive_or_expression = and_expression ['^' exclusive_or_expression] ;

inclusive_or_expression = exclusive_or_expression ['|' inclusive_or_expression] ;

logical_and_expression = inclusive_or_expression ['&&' logical_and_expression] ;

logical_or_expression = logical_and_expression ['||' logical_or_expression] ;

conditional_expression = logical_or_expression ['?' expression ':' conditional_expression] ;

assignment_expression = conditional_expression | unary_expression assignment_operator assignment_expression ;

assignment_operator =
    '=' | '*=' | '/=' | '%=' |
    '+=' | '-=' | '<<=' | '>>=' |
    '&=' | '^=' | '|=' ;

expression = assignment_expression [',' expression] ;

constant_expression = conditional_expression ;

declaration = declaration_specifiers [init_declarator_list] ';' ;

declaration_specifiers =
    type_specifier |
    type_specifier declaration_specifiers |
    function_specifier |
    function_specifier declaration_specifiers ;

init_declarator_list = init_declarator [',' init_declarator_list] ;

init_declarator = declarator ['=' initializer] ;

type_specifier =
    VOID | INT | FLOAT | DOUBLE | CHAR |
    STRUCT [IDENTIFIER] '{' struct_declaration_list '}' |
    STRUCT IDENTIFIER ;

struct_declaration_list = struct_declaration [struct_declaration_list] ;

struct_declaration = type_specifier struct_declarator_list ';' ;

struct_declarator_list = struct_declarator [',' struct_declarator_list] ;

struct_declarator = declarator | [declarator] ':' constant_expression ;

declarator = [pointer] direct_declarator;

direct_declarator =
    IDENTIFIER |
    '(' declarator ')' |
    direct_declarator '[' [assignment_expression] ']' |
    direct_declarator '[' ['*'] ']' |
    direct_declarator '(' [parameter_list | identifier_list] ')' ;

pointer = '*' [pointer] ;

parameter_list = parameter_declaration {',' parameter_list} ;

parameter_declaration = declaration_specifiers [declarator | abstract_declarator] ;

identifier_list = IDENTIFIER [',' identifier_list] ;

type_name = type_specifier [abstract_declarator] ;

abstract_declarator = pointer | [pointer] direct_abstract_declarator ;

direct_abstract_declarator =
    '(' abstract_declarator ')' |
    [direct_abstract_declarator] '[' ['*' | assignment_expression] ']' |
    [direct_abstract_declarator] '(' [parameter_list] ')' ;

initializer = assignment_expression | '{' initializer_list '}' | '{' initializer_list ',' '}' ;

initializer_list =
    initializer_list ',' [designation] initializer |
    [designation] initializer ;

designation = designator_list '=' ;

designator_list = designator [designator_list] ;

designator = '[' constant_expression ']' | '.' IDENTIFIER ;

statement =
    compound_statement |
    expression_statement | selection_statement |
    iteration_statement | jump_statement ;

compound_statement = '{' [block_item_list] '}' ;

block_item_list = block_item [block_item_list] ;

block_item = declaration | statement ;

expression_statement = [expression] ';' ;

selection_statement = IF '(' expression ')' statement [ELSE statement] ;

iteration_statement =
    WHILE '(' expression ')' statement |
    DO statement WHILE '(' expression ')' ';' |
    FOR '(' expression_statement expression_statement ')' statement |
    FOR '(' expression_statement expression_statement expression ')' statement |
    FOR '(' declaration expression_statement ')' statement |
    FOR '(' declaration expression_statement expression ')' statement ;

jump_statement =
    [CONTINUE | BREAK | RETURN [expression]] ';' ;

translation_unit = external_declaration [translation_unit] ;

external_declaration = function_definition | declaration ;

function_definition =
    declaration_specifiers declarator [declaration_list] compound_statement ;

declaration_list = declaration [declaration_list] ;