From 8f98dc579af1993ec85bd849656c4835b4039dd6 Mon Sep 17 00:00:00 2001
From: Stefan Weigl-Bosker <stefan@s00.xyz>
Date: Mon, 23 Feb 2026 22:18:22 -0500
Subject: [willow]: frontend plumbing (#13)

...
---
 willow/tools/willowc/include/sourcemanager.hpp | 39 ++++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 2 deletions(-)

(limited to 'willow/tools/willowc/include/sourcemanager.hpp')

diff --git a/willow/tools/willowc/include/sourcemanager.hpp b/willow/tools/willowc/include/sourcemanager.hpp
index a526e48..25d4128 100644
--- a/willow/tools/willowc/include/sourcemanager.hpp
+++ b/willow/tools/willowc/include/sourcemanager.hpp
@@ -1,24 +1,59 @@
 #ifndef WILLOWC_INCLUDE_SOURCEMANAGER_HPP
 #define WILLOWC_INCLUDE_SOURCEMANAGER_HPP
 
-#include <filesystem>
 #include <memory>
 #include <string>
+#include <unordered_map>
+#include <map>
 #include <vector>
+#include <optional>
+
+#include <willow/IR/Location.h>
 
 namespace willowc {
 
 using FileID = std::uint32_t;
 
+class LineCache {
+public:
+private:
+  std::unordered_map<std::size_t, std::size_t> cache_;
+};
+
 class SourceManager {
+public:
 struct File {
   std::string path;
+  // TODO: remove this, but find something better than using the abs path
+  std::string display_path;
   std::unique_ptr<char[]> buf;
+  size_t size;
+
+  willow::Location getLoc(std::size_t offset);
+  std::map<std::size_t, uint32_t> linecache_;
+
+  File(std::string path, std::string display_path, std::unique_ptr<char[]> buf,
+       size_t size)
+      : path(std::move(path)), display_path(std::move(display_path)),
+        buf(std::move(buf)), size(size), linecache_{{{0, 1}}} {}
 };
-public:
+
   std::optional<FileID> addFile(std::string_view path);
+  std::optional<FileID> addStdIn();
+  std::optional<FileID> getFileID(const std::string& path);
+  std::string_view getBuf(FileID file) const {
+    const File &f = file_table.at(file);
+    return std::string_view(f.buf.get(), f.size);
+  }
+  File &getFile(FileID id) { return file_table.at(id); }   
+
+  const std::vector<File>& files() const { return file_table; }
+  std::vector<File>& files() { return file_table; }
+
+  size_t numFiles() { return file_table.size(); }
 private:
   std::vector<File> file_table;
+  std::unordered_map<std::string, FileID> ids;
 };
 
 } // namespace willowc
-- 
cgit v1.2.3