Operator-precedence parser: Difference between revisions

Revision as of 08:39, 6 August 2022

Revision as of 04:16, 16 May 2023

Line 128:

#include <string.h>

// The command-line argument boundary is our lexer.

int main(int argc, char *argv[]) {

int i;

printf("((((");

for (i=1; i!=argc; i++) {

// strlen(argv[i]) == 2

if (argv[i] && !argv[i][1]) {

switch (*argv[i]) {

Line 140 ⟶ 142:

case '/': printf("))/(("); continue;

case '+':

// unary lookback

if (i == 1 || strchr("(^*/+-", *argv[i-1]))

printf("+");