summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/netlist/plib/pparser.h
blob: 15d81294a099573ef69665abd1011173d0f53564 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
// license:GPL-2.0+
// copyright-holders:Couriersud
/*
 * pparser.h
 *
 */

#ifndef PPARSER_H_
#define PPARSER_H_

#include "pconfig.h"
#include "pstring.h"
#include "plists.h"

class ptokenizer
{
	P_PREVENT_COPYING(ptokenizer)
public:
	virtual ~ptokenizer() {}

	ptokenizer()
	: m_line(1), m_line_ptr(NULL), m_px(NULL), m_string('"')
	{}

	enum token_type
	{
		IDENTIFIER,
		NUMBER,
		TOKEN,
		STRING,
		COMMENT,
		UNKNOWN,
		ENDOFFILE
	};

	struct token_id_t
	{
	public:
		token_id_t() : m_id(-2) {}
		token_id_t(const int id) : m_id(id) {}
		int id() const { return m_id; }
	private:
		int m_id;
	};

	struct token_t
	{
		token_t(token_type type)
		{
			m_type = type;
			m_id = token_id_t(-1);
			m_token ="";
		}
		token_t(token_type type, const pstring &str)
		{
			m_type = type;
			m_id = token_id_t(-1);
			m_token = str;
		}
		token_t(const token_id_t id, const pstring &str)
		{
			m_type = TOKEN;
			m_id = id;
			m_token = str;
		}

		bool is(const token_id_t &tok_id) const { return m_id.id() == tok_id.id(); }
		bool is_not(const token_id_t &tok_id) const { return !is(tok_id); }

		bool is_type(const token_type type) const { return m_type == type; }

		pstring str() const { return m_token; }

	private:
		token_type m_type;
		token_id_t m_id;
		pstring m_token;
	};


	int currentline_no() { return m_line; }
	pstring currentline_str();

	/* tokenizer stuff follows ... */

	token_t get_token();
	pstring get_string();
	pstring get_identifier();
	pstring get_identifier_or_number();
	double get_number_double();
	long get_number_long();

	void require_token(const token_id_t &token_num);
	void require_token(const token_t tok, const token_id_t &token_num);

	token_id_t register_token(pstring token)
	{
		m_tokens.add(token);
		return token_id_t(m_tokens.size() - 1);
	}

	void set_identifier_chars(pstring s) { m_identifier_chars = s; }
	void set_number_chars(pstring st, pstring rem) { m_number_chars_start = st; m_number_chars = rem; }
	void set_string_char(char c) { m_string = c; }
	void set_whitespace(pstring s) { m_whitespace = s; }
	void set_comment(pstring start, pstring end, pstring line)
	{
		m_tok_comment_start = register_token(start);
		m_tok_comment_end = register_token(end);
		m_tok_line_comment = register_token(line);
	}

	token_t get_token_internal();
	void error(const char *format, ...) ATTR_PRINTF(2,3);

	void reset(const char *p) { m_px = p; m_line = 1; m_line_ptr = p; }

protected:
	virtual void verror(pstring msg, int line_num, pstring line) = 0;

private:
	void skipeol();

	unsigned char getc();
	void ungetc();
	bool eof() { return *m_px == 0; }

	int m_line;
	const char * m_line_ptr;
	const char * m_px;

	/* tokenizer stuff follows ... */

	pstring m_identifier_chars;
	pstring m_number_chars;
	pstring m_number_chars_start;
	plist_t<pstring> m_tokens;
	pstring m_whitespace;
	char  m_string;

	token_id_t m_tok_comment_start;
	token_id_t m_tok_comment_end;
	token_id_t m_tok_line_comment;
};


class ppreprocessor
{
	P_PREVENT_COPYING(ppreprocessor)
public:

	struct define_t
	{
		define_t() { };
		define_t(const pstring &name, const pstring &replace)
		: m_name(name), m_replace(replace)
		{}
		pstring m_name;
		pstring m_replace;
	};

	ppreprocessor();
	virtual ~ppreprocessor() {}

	pstring process(const pstring &contents);

protected:

	double expr(const pstring_list_t &sexpr, std::size_t &start, int prio);

	define_t *get_define(const pstring &name);

	pstring replace_macros(const pstring &line);

	virtual void error(const pstring &err);

private:

	plist_t<define_t> m_defines;
	pstring_list_t m_expr_sep;
};

#endif /* PPARSER_H_ */