3 files changed, 57 insertions, 0 deletions
diff --git a/include/parser.h b/include/parser.h
new file mode 100644
index 0000000..c6a2b17
--- /dev/null
+++ b/include/parser.h
@@ -0,0 +1,31 @@
+#ifndef PARSER_H_
+#define PARSER_H_
+
+#include <variable.h>
+
+typedef void *stack_t;
+
+typedef struct {
+	uint16_t status;
+	uint16_t vcount;
+	variable *vars;
+	char **names;
+	stack_t *stack;
+} interpreter;
+
+enum status {
+	READY = 0
+};
+
+typedef void (*func_t)(stack_t *);
+
+void interpreter_init(interpreter *);
+
+void interpreter_define_value(interpreter *, const char *, int32_t);
+void interpreter_define_cfunc(interpreter *, const char *, func_t);
+
+int32_t interpreter_get_value(interpreter *, const char *);
+
+int interpreter_doline(interpreter *, const char *);
+
+#endif // PARSER_H_
diff --git a/include/serial.h b/include/serial.h
index 5b90748..97b02d7 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -3,6 +3,8 @@
 
 void serial_init(void);
 void serial_put(int c);
+
 char serial_get(void);
+void serial_gets(char *buf);
 
 #endif // SERIAL_H_
diff --git a/include/variable.h b/include/variable.h
new file mode 100644
index 0000000..fd84a6e
--- /dev/null
+++ b/include/variable.h
@@ -0,0 +1,24 @@
+#ifndef TOKEN_H_
+#define TOKEN_H_
+
+#include <stdint.h>
+
+typedef struct {
+	uint16_t nameidx;
+	uint8_t type;
+	uint8_t info;
+	uint32_t value;
+} variable;
+
+#define INFO_ARGS(x)	((x) & 0x07)
+#define INFO_RET	(1 << 3)
+
+enum vartype {
+	VALUE = 0,
+	VARIABLE,
+	OPERATOR,
+	FUNCTION,
+	CFUNCTION
+};
+
+#endif // TOKEN_H_