20 lines
245 B
Plaintext
20 lines
245 B
Plaintext
|
%include {
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
#include <string>
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
%token_type {int}
|
||
|
|
|
||
|
|
%left PLUS MINUS.
|
||
|
|
|
||
|
|
%syntax_error {
|
||
|
|
std::cout << "Syntax error!" << std::endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
program ::= expr. { }
|
||
|
|
|
||
|
|
expr ::= expr PLUS expr. { }
|