From 06a2da38c0bffa43c9e8a26b6d98dc95595dc081 Mon Sep 17 00:00:00 2001
From: Fuwn <contact@fuwn.me>
Date: Fri, 24 Jun 2022 04:34:06 -0700
Subject: ci: push source to remote

---
 src/lexer.cc | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/lexer.cc

(limited to 'src/lexer.cc')

diff --git a/src/lexer.cc b/src/lexer.cc
new file mode 100644
index 0000000..1100a2e
--- /dev/null
+++ b/src/lexer.cc
@@ -0,0 +1,69 @@
+// This file is part of Cait <https://github.com/Fuwn/cait>.
+// Copyright (C) 2022-2022 Fuwn <contact@fuwn.me>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <contact@fuwn.me>
+// SPDX-License-Identifier: GPL-3.0-only
+
+#include "lexer.hh"
+
+namespace cait {
+
+lexer::lexer(std::ifstream &file) {
+  std::string line;
+  std::size_t line_number = 1;
+
+  for (;;) {
+    while (std::getline(file, line)) {
+      std::vector<token> token_line;
+
+      this->_lines.push_back(line);
+
+    start:
+      std::istringstream line_stream(line);
+      std::string word;
+      std::size_t character = 1;
+
+      while (std::getline(line_stream, word, ' ')) {
+        if (word.empty()) {
+          continue;
+        }
+
+        token_line.emplace_back(line_number, character, character + word.size(),
+                                word);
+
+        character += word.size() + 1;
+      }
+
+      if (word == "$") {
+        token_line.pop_back();
+        std::getline(file, line);
+
+        goto start;
+      }
+
+      this->_tree.push_back(token_line);
+
+      line_number += 1;
+    }
+
+    break;
+  }
+}
+
+auto lexer::tree() -> token_tree & { return this->_tree; }
+
+auto lexer::lines() -> const std::vector<std::string> & { return this->_lines; }
+
+} // namespace cait
-- 
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