Initial commit

1 files changed, 28 insertions, 0 deletions

diff --git a/src/lexer.h b/src/lexer.h
new file mode 100644
index 0000000..dabe534
--- /dev/null
+++ b/src/lexer.h
@@ -0,0 +1,28 @@
+#ifndef LEXER_H
+#define LEXER_H
+
+#include "types.h"
+
+typedef enum {
+    PIT_LEX_TOKEN_ERROR=-1,
+    PIT_LEX_TOKEN_EOF=0,
+    PIT_LEX_TOKEN_LPAREN,
+    PIT_LEX_TOKEN_RPAREN,
+    PIT_LEX_TOKEN_DOT,
+    PIT_LEX_TOKEN_QUOTE,
+    PIT_LEX_TOKEN_INTEGER_LITERAL,
+    PIT_LEX_TOKEN_STRING_LITERAL,
+    PIT_LEX_TOKEN_SYMBOL,
+    PIT_LEX_TOKEN__SENTINEL,
+} pit_lex_token;
+
+typedef struct {
+    char *input;
+    i64 start, end, len;
+} pit_lexer;
+
+pit_lexer *pit_lex_file(char *path);
+pit_lex_token pit_lex_next(pit_lexer *st);
+const char *pit_lex_token_name(pit_lex_token t);
+
+#endif