1 files changed, 74 insertions, 0 deletions
diff --git a/src/lexer.h b/src/lexer.h
new file mode 100644
index 0000000..bac1d6a
--- /dev/null
+++ b/src/lexer.h
@@ -0,0 +1,74 @@
+#ifndef LEXER_H
+#define LEXER_H
+#include "string_view.h"
+
+
+typedef enum token_kind {
+    TOKEN_KW_PUSH,
+    TOKEN_KW_DUP,
+    TOKEN_KW_COPY,
+    TOKEN_KW_SWAP,
+    TOKEN_KW_DROP,
+    TOKEN_KW_SLIDE,
+    TOKEN_KW_ADD,
+    TOKEN_KW_SUB,
+    TOKEN_KW_MUL,
+    TOKEN_KW_DIV,
+    TOKEN_KW_MOD,
+    TOKEN_KW_STORE,
+    TOKEN_KW_LOAD,
+    TOKEN_KW_CALL,
+    TOKEN_KW_RET,
+    TOKEN_KW_JMP,
+    TOKEN_KW_JMPZ,
+    TOKEN_KW_JMPN,
+    TOKEN_KW_PRINTI,
+    TOKEN_KW_PRINTC,
+    TOKEN_KW_READI,
+    TOKEN_KW_READC,
+    TOKEN_KW_END,
+    TOKEN_EOS,
+    TOKEN_NUMBER,
+    TOKEN_IDENT,
+    TOKEN_COLON,
+    TOKEN_UNKOWN,
+    TOKEN_EOF
+} token_kind_t;
+
+typedef struct lex_loc {
+    size_t offset;
+    size_t lineoffset;
+    size_t lineno;
+} lex_loc_t;
+
+typedef struct token {
+    token_kind_t kind;
+    string_view_t value;
+    lex_loc_t loc;
+} token_t;
+
+typedef struct lexer {
+    char *file_name;
+    string_view_t source;
+    lex_loc_t loc;
+} lexer_t;
+
+void
+lexer_init(lexer_t *lexer, char *file_name);
+
+bool
+lexer_is_eof(lexer_t *lexer);
+
+char
+lexer_current_char(lexer_t *lexer);
+
+char
+lexer_next_char(lexer_t *lexer);
+
+void
+lexer_next_token(lexer_t *lexer, token_t *token);
+
+char *
+token_to_cstr(token_kind_t kind);
+
+#endif /* LEXER_H */