igen: Start work on writing an instruction handler

generator.

This will make it easier in the long run to modify
instructions, add new instructions, and move the opcode
tables around.

1 files changed, 46 insertions, 0 deletions

diff --git a/igen/lexer.h b/igen/lexer.h
new file mode 100644
index 0000000..ba81cb1
--- /dev/null
+++ b/igen/lexer.h
@@ -0,0 +1,46 @@
+#ifndef LEXER_H
+#define LEXER_H
+
+typedef enum atom atom;
+typedef struct lexeme lexeme;
+
+enum atom {
+	ATOM_LBRACK,
+	ATOM_RBRACK,
+	ATOM_SLASH,
+	ATOM_PLUS,
+	ATOM_MINUS,
+	ATOM_ASTR,
+	ATOM_PRCNT,
+	ATOM_AMPR,
+	ATOM_PIPE,
+	ATOM_CARROT,
+	ATOM_HASH,
+	ATOM_COL,
+	ATOM_SCOL,
+	ATOM_SPACE,
+	ATOM_USCORE,
+	ATOM_EQUAL,
+	ATOM_DOT,
+	ATOM_QMARK,
+	ATOM_BANG,
+	ATOM_LT,
+	ATOM_GT,
+	ATOM_PERCENT,
+	ATOM_COMMA,
+	ATOM_BSLASH,
+	ATOM_QUOTE,
+	ATOM_SQUOTE,
+	ATOM_TAB,
+	ATOM_NLINE,
+	ATOM_ALPHA,
+	ATOM_NUM,
+	ATOM_NONE,
+	NUM_ATOMS
+};
+
+struct lexeme {
+};
+
+extern int lex(char *str, int dbg);
+#endif