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grammar.txt
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primary-expr ::= id | constant | string-literal | (expr)
postfix-expr ::= primary-expr | postifx-expr [expr] | postfix-expr (`argument-expr-list)
| postfix-expr . id | postfix-expr -> id | postfix-expr ++ | postfix-expr --
| (type-id) {initializer-list} | (type-id) {initializer-list, } | printf(format-string `variadic-arguments)
argument-expr-list ::= argument-expr | argument-expr-list, argument-expr
unary-expr ::= postfix-expr | ++ unary-expr | -- unary-expr | unary-op cast-expr
| sizeof unary-expr | sizeof (type-id)
variadic-arguments ::= , argument-expr-list
unary-op ::= & | * | + | - | ~ | !
cast-expr ::= unary-expr | (type-id) cast-expr
multiplicative-expr ::= cast-expr | multiplicative-expr * cast-expr
| multiplicative-expr / cast-expr
| multiplicative-expr % cast-expr
addictive-expr ::= multiplicative-expr
| addictive-expr + multiplicative-expr
| addictive-expr - multiplicative-expr
shift-expr ::= addictive-expr
| shift-expr << addictive-expr
| shift-expr >> addictive-expr
rel-expr ::= shift-expr | rel-expr < shift-expr | rel-expr > shift-expr
| rel-expr <= shift expr | rel-expr >= shift-expr
eq-expr ::= rel-expr | eq-expr == rel-expr | eq-expr != rel-expr
AND-expr ::= eq-expr | AND-expr & eq-expr
exclusive-OR-expr ::= AND-expr | exclusive-OR-expr ^ AND-expr
inclusive-OR-expr ::= exclusive-OR-expr | inclusive-OR-expr '|' exclusive-OR-expr
logical-AND-expr ::= inclusive-OR-expr | logical-AND-expr && inclusive-OR-expr
logical-OR-expr ::= logical-AND-expr | logical-OR-expr || logical-AND-expr
conditional-expr ::= logical-OR-expr | logical-OR-expr ? expr : conditional-expr
assignment-expr ::= conditional-expr | unary-expr assignment-op assignment-expr
assignment-op ::= = | *= | /= | %= | += | -= | <<= | >>= | &= | ^= | |=
expr ::= assignment-expr | expr , assignment-expr
constant-expr ::= conditional-expr
declaration ::= declaration-specifiers `init-declarator-list ;
declaration-specifiers ::= storage-class-specifier `declaration-specifier |
| type-specifier `declaration-specifier
| type-qualifier `declaration-specifier
| function-specifier declaration-specifier
init-declarator-list ::= init-declarator | init-declarator-list , init-declarator
init-declarator ::= declarator | declaratxor = initializer
storage-class-specifier ::= typedef | extern | static | auto | register
type-specifier ::= void | char | short | int | long | float | double | singed
| unsigned | struct-specifier | enum-specifier |
| typedef-id
struct-specifier ::= struct `id {struct-declaration-list}
| struct id
struct-declaration-list ::= struct-declaration | struct-declaration-list struct-declaration
struct-declaration ::= specifier-qualifier-list struct-declarator-list ;
specifier-qualifier-list ::= type-specifier `specifier-qualifier-list
| type-qualifier `specifier-qualifier-list
struct-declarator-list ::= struct-declarator | struct-declarator-list , struct-declarator
struct-declarator ::= declarator | `declarator : constant-expr
enum-specifier ::= enum `id {enumerator-list}
| enum `id {enumerator-list , }
| enum id
enumerator-list ::= enumerator | enumerator-list , enumerator
enumerator ::= enumeration-constant, enumeration-constant = constant-expr
type-qualifier ::= const
function-specifier ::= inline
declarator ::= `pointer direct-declarator
direct-declarator ::= id | (declarator)
| direct-declarator [constant-expr]
| direct-declarator (`parameter-type-list)
pointer ::= * `type-qualifier-list | * `type-qualifier-list pointer
type-qualifier-list ::= type-qualifier | type-qualifier-list type-qualifier
parameter-type-list ::= parameter-list
parameter-list ::= parameter-declaration | parameter-list , parameter-declaration
parameter-declaration ::= declaration-specifiers declarator | declaration-specifiers `abstract-declarator
type-id ::= specifier-qualifier-list `abstract-declarator
abstract-declarator ::= pointer | `pointer direct-abstract-declarator
direct-abstract-declarator ::= (abstract-declarator) | `direct-abstract-declarator [constant-expr]
| `direct-abstract-declarator (`parameter-type-list)
initializer ::= assignment-expr | {initializer-list} | {initializer-list , }
initializer-list ::= `designation initializer | initializer-list , `designation initializer
designation ::= designator-list =
designator-list ::= designator | designator-list designator
designator ::= [constant-expr] | . id
statement ::= labeled-statement | compound-statement
| expression-statement | selection-statement
| iteration-statement | jump-statement
labeled-statement ::= id : statement
compound-statement ::= {`block-item-list}
block-item-list ::= block-item | block-item-list block-item
block-item ::= declaration | statement
expression-statement ::= `expr ;
selection-statement ::= if (expr) statement
| if (expr) statement else statement
iteration-statement ::= while (expr) statement
| do statement while (expr) ;
| for (`expr ; `expr ; `expr) statement
| for (declaration `expr; `expr) statement
jump-statement ::= goto id ;
| continue ;
| break ;
| return `expr ;
translation-unit ::= external-declaration | translation-unit external-declaration
external-declaration ::= function-definition | declaration
function-definition ::= declaration-specifier declarator compound-statement
declaration-list ::= declaration | declaration-list declaration