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comparison tok.h @ 27:722a45b4028b

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Add define command for defining macros Macros are parsed when they are defined with the D command and can subsequently be used as arguments for other commands. Handle out of memory errors directly in tok.c.
author Guido Berhoerster <guido+pwm@berhoerster.name>
date Mon, 25 Sep 2017 21:21:25 +0200
parents a7e41e1a79c8
children
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26:5bdea77d0c1d 27:722a45b4028b
1 /* 1 /*
2 * Copyright (C) 2016 Guido Berhoerster <guido+pwm@berhoerster.name> 2 * Copyright (C) 2017 Guido Berhoerster <guido+pwm@berhoerster.name>
3 * 3 *
4 * Permission is hereby granted, free of charge, to any person obtaining 4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the 5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including 6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish, 7 * without limitation the rights to use, copy, modify, merge, publish,
23 23
24 #ifndef TOK_H 24 #ifndef TOK_H
25 #define TOK_H 25 #define TOK_H
26 26
27 enum tok_err { 27 enum tok_err {
28 TOK_ERR_SYSTEM_ERROR = -1, 28 TOK_ERR_OK,
29 TOK_ERR_UNTERMINATED_QUOTE = -2, 29 TOK_ERR_UNTERMINATED_QUOTE = -1,
30 TOK_ERR_TRAILING_BACKSLASH = -3 30 TOK_ERR_TRAILING_BACKSLASH = -2,
31 TOK_ERR_INVALID_MACRO_NAME = -3
31 }; 32 };
32 33
33 enum tok_err tok_tokenize(const char *, int *, char ***); 34 enum tok_type {
35 TOK_ARG,
36 TOK_MACRO
37 };
38
39 struct tok_any {
40 enum tok_type type;
41 };
42
43 struct tok_arg {
44 enum tok_type type;
45 char *value;
46 };
47
48 struct tok_macro {
49 enum tok_type type;
50 char *name;
51 };
52
53 union tok {
54 struct tok_any any;
55 struct tok_arg arg;
56 struct tok_macro macro;
57 };
58
59 void tok_free(union tok **);
60 enum tok_err tok_tokenize(const char *, size_t *, union tok ***);
34 61
35 #endif /* !TOK_H */ 62 #endif /* !TOK_H */