1#ifndef PARSER_H
 2#define PARSER_H
 3
 4#include "util/common.h"
 5#include "debugger.h"
 6
 7enum LexState {
 8	LEX_ERROR = -1,
 9	LEX_ROOT = 0,
10	LEX_EXPECT_IDENTIFIER,
11	LEX_EXPECT_BINARY,
12	LEX_EXPECT_DECIMAL,
13	LEX_EXPECT_HEX,
14	LEX_EXPECT_PREFIX,
15	LEX_EXPECT_OPERATOR
16};
17
18enum Operation {
19	OP_ASSIGN,
20	OP_ADD,
21	OP_SUBTRACT,
22	OP_MULTIPLY,
23	OP_DIVIDE
24};
25
26struct Token {
27	enum TokenType {
28		TOKEN_ERROR_TYPE,
29		TOKEN_UINT_TYPE,
30		TOKEN_IDENTIFIER_TYPE,
31		TOKEN_OPERATOR_TYPE,
32		TOKEN_OPEN_PAREN_TYPE,
33		TOKEN_CLOSE_PAREN_TYPE,
34	} type;
35	union {
36		uint32_t uintValue;
37		char* identifierValue;
38		enum Operation operatorValue;
39	};
40};
41
42struct LexVector {
43	struct LexVector* next;
44	struct Token token;
45};
46
47struct ParseTree {
48	struct Token token;
49	struct ParseTree* lhs;
50	struct ParseTree* rhs;
51};
52
53size_t lexExpression(struct LexVector* lv, const char* string, size_t length);
54void parseLexedExpression(struct ParseTree* tree, struct LexVector* lv);
55
56void lexFree(struct LexVector* lv);
57void parseFree(struct ParseTree* tree);
58
59#endif