Mercurial > hg > index.cgi

comparison lwcc/cpp.h @ 296:83fcc1ed6ad6 ccdev

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Checkpoint lwcc development Initial untested version of the preprocessor with macro expansion but without file inclusion.
author William Astle <lost@l-w.ca>
date Sat, 14 Sep 2013 20:04:38 -0600
parents 4b17780f2777
children 6112c67728ba
comparison
equal deleted inserted replaced
295:4b17780f2777 296:83fcc1ed6ad6
22 #ifndef cpp_h_seen___ 22 #ifndef cpp_h_seen___
23 #define cpp_h_seen___ 23 #define cpp_h_seen___
24 24
25 #include <stdio.h> 25 #include <stdio.h>
26 26
27 //#include "symbol.h"
27 #include "token.h" 28 #include "token.h"
28 29
29 #define TOKBUFSIZE 32 30 #define TOKBUFSIZE 32
31
32 struct expand_e
33 {
34 struct expand_e *next;
35 struct symtab_e *s; // symbol table entry of the expanding symbol
36 };
30 37
31 struct preproc_info 38 struct preproc_info
32 { 39 {
33 const char *fn; 40 const char *fn;
34 FILE *fp; 41 FILE *fp;
35 struct token *tokbuf[TOKBUFSIZE];
36 struct token *tokqueue; 42 struct token *tokqueue;
37 int tokbuf_ptr; 43 struct token *curtok;
38 void (*errorcb)(const char *); 44 void (*errorcb)(const char *);
39 void (*warningcb)(const char *); 45 void (*warningcb)(const char *);
40 int eolstate; 46 int eolstate; // internal for use in handling newlines
41 int lineno; 47 int lineno; // the current input line number
42 int column; 48 int column; // the current input column
43 int trigraphs; 49 int trigraphs; // nonzero if we're going to handle trigraphs
44 int ra; 50 int ra;
45 int qseen; 51 int qseen;
46 int ungetbufl; 52 int ungetbufl;
47 int ungetbufs; 53 int ungetbufs;
48 int *ungetbuf; 54 int *ungetbuf;
49 int unget; 55 int unget;
50 int eolseen; 56 int eolseen;
51 int nlseen; 57 int nlseen;
58 int ppeolseen; // nonzero if we've seen only whitespace (or nothing) since a newline
59 int skip_level; // nonzero if we're in a false conditional
60 int found_level; // nonzero if we're in a true conditional
61 int else_level; // for counting #else directives
62 int else_skip_level; // ditto
63 struct symtab_e *sh; // the preprocessor's symbol table
64 struct token *sourcelist; // for expanding a list of tokens
65 struct expand_e *expand_list; // record of which macros are currently being expanded
66
52 }; 67 };
53 68
54 extern struct preproc_info *preproc_init(const char *); 69 extern struct preproc_info *preproc_init(const char *);
55 extern struct token *preproc_next_token(struct preproc_info *); 70 extern struct token *preproc_next_token(struct preproc_info *);
71 extern struct token *preproc_next_processed_token(struct preproc_info *);
56 extern void preproc_finish(struct preproc_info *); 72 extern void preproc_finish(struct preproc_info *);
57 extern void preproc_register_error_callback(struct preproc_info *, void (*)(const char *)); 73 extern void preproc_register_error_callback(struct preproc_info *, void (*)(const char *));
58 extern void preproc_register_warning_callback(struct preproc_info *, void (*)(const char *)); 74 extern void preproc_register_warning_callback(struct preproc_info *, void (*)(const char *));
59 extern void preproc_throw_error(struct preproc_info *, const char *, ...); 75 extern void preproc_throw_error(struct preproc_info *, const char *, ...);
60 extern void preproc_throw_warning(struct preproc_info *, const char *, ...); 76 extern void preproc_throw_warning(struct preproc_info *, const char *, ...);
77 extern void preproc_unget_token(struct preproc_info *, struct token *);
78
61 #endif // cpp_h_seen___ 79 #endif // cpp_h_seen___