[willow]: initial frontend work, unit tests (#8)dev/stefan

1 files changed, 33 insertions, 0 deletions

diff --git a/willow/tools/willowc/include/parser.hpp b/willow/tools/willowc/include/parser.hpp
new file mode 100644
index 0000000..825dfdd
--- /dev/null
+++ b/willow/tools/willowc/include/parser.hpp
@@ -0,0 +1,33 @@
+#ifndef WILLOWC_INCLUDE_PARSER_HPP
+#define WILLOWC_INCLUDE_PARSER_HPP
+
+#include <tokenizer.hpp>
+#include <ast.hpp>
+
+#include <optional>
+#include <memory>
+#include <vector>
+
+namespace willowc {
+
+class Parser {
+  std::string_view buf;
+
+  std::vector<TokenKind> kinds;
+  std::vector<std::size_t> starts;
+  Tokenizer tokenizer;
+
+  std::size_t pos;
+
+public:
+  Parser(std::string_view buf) : buf(buf), tokenizer(buf) {}
+
+  std::optional<std::unique_ptr<ModuleAST>> parse();
+
+  TokenKind kind() const { return kinds[pos]; }
+  std::size_t start() const { return starts[pos]; }
+};
+
+} // namespace willowc
+
+#endif // WILLOWC_INCLUDE_PARSER_HPP