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|
grammar CGrammar;
ID: [a-zA-Z_][a-zA-Z0-9_]*;
INT: [0-9]+;
program
: function EOF
;
function
: 'int' ID '(' ')' '{' statement* '}'
;
statement
: 'return' expression ';' #returnStatement
;
expression
: '(' expression ')' #parenthesizedExpression
| '!' expression #notExpression
| '~' expression #invertExpression
| left=expression '*' right=expression #multiplyExpression
| left=expression '/' right=expression #divideExpression
| left=expression '%' right=expression #modulusExpression
| left=expression '+' right=expression #addExpression
| left=expression '-' right=expression #subtractExpression
| left=expression '<' right=expression #lessThanExpression
| left=expression '>' right=expression #greaterThanExpression
| left=expression '<=' right=expression #lessThanOrEqualExpression
| left=expression '>=' right=expression #greaterThanOrEqualExpression
| left=expression '==' right=expression #equalExpression
| left=expression '!=' right=expression #notEqualExpression
| left=expression '&' right=expression #bitwiseAndExpression
| left=expression '|' right=expression #bitwiseOrExpression
| left=expression '^' right=expression #bitwiseXorExpression
| left=expression '&&' right=expression #logicalAndExpression
| left=expression '||' right=expression #logicalOrExpression
| constant #constantExpression
;
constant
: INT # intConstant
;
|
