xiiregexbuilder

commit e298cda282f22b28115114d4c1aabc3c0b2572fb
parent b98cdd2ed1a02ffcd879c0abad800b27a10d02bd
Author: Pranav Prabhu Kumble <kumblepranavprabhu@gmail.com>
Date:   Fri, 27 Mar 2026 04:27:41 +0530

Week 2: Add parser testing utility (Part 1: Initial definitions)

Diffstat:
A
src/parser_tester.cpp
 | 
32
++++++++++++++++++++++++++++++++

1 file changed, 32 insertions(+), 0 deletions(-)
diff --git a/src/parser_tester.cpp b/src/parser_tester.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include "lexer.h"
+#include "parser.h"
+#include "nfa.h"
+
+std::string trim(const std::string& str) {
+    size_t first = str.find_first_not_of(" \t\r\n");
+    if (first == std::string::npos) return "";
+    size_t last = str.find_last_not_of(" \t\r\n");
+    return str.substr(first, (last - first + 1));
+}
+
+int main(int argc, char* argv[]) {
+    if (argc < 2) {
+        std::cerr << "Usage: " << argv[0] << " <regex_file> [test_strings_file]" << std::endl;
+        return 1;
+    }
+
+    std::string regexFilename = argv[1];
+    std::ifstream regexFile(regexFilename);
+    if (!regexFile.is_open()) {
+        std::cerr << "Failed to open " << regexFilename << std::endl;
+        return 1;
+    }
+
+    // Optional: Test strings for validation
+    std::string testFilename = (argc > 2) ? argv[2] : "";
+    std::vector<std::string> testStrings;