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comparison lwcc/token.h @ 299:856caf91ffaa ccdev

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Added token list structure and switched some stuff to use it Swithced to using a token list structure instead of manually fiddling pointers throughout the macro expansion code. Also fixed up some problematic things related to stringification and concatenation.
author William Astle <lost@l-w.ca>
date Sun, 15 Sep 2013 13:06:00 -0600
parents 83fcc1ed6ad6
children 54f213c8fb81
comparison
equal deleted inserted replaced
298:6112c67728ba 299:856caf91ffaa
91 TOK_CHR_LIT, 91 TOK_CHR_LIT,
92 TOK_STR_LIT, 92 TOK_STR_LIT,
93 TOK_ARROW, 93 TOK_ARROW,
94 TOK_ENDEXPAND, 94 TOK_ENDEXPAND,
95 TOK_STARTEXPAND, 95 TOK_STARTEXPAND,
96 TOK_ERROR,
96 TOK_MAX 97 TOK_MAX
97 }; 98 };
98 99
99 struct token 100 struct token
100 { 101 {
101 int ttype; // token type 102 int ttype; // token type
102 char *strval; // the token value if relevant 103 char *strval; // the token value if relevant
103 struct token *prev; // previous token in a list 104 struct token *prev; // previous token in a list
104 struct token *next; // next token in a list 105 struct token *next; // next token in a list
106 struct token_list *list;// pointer to head of list descriptor this token is on
105 int lineno; // line number token came from 107 int lineno; // line number token came from
106 int column; // character column token came from 108 int column; // character column token came from
107 const char *fn; // file name token came from 109 const char *fn; // file name token came from
110 };
111
112 struct token_list
113 {
114 struct token *head; // the head of the list
115 struct token *tail; // the tail of the list
108 }; 116 };
109 117
110 extern void token_free(struct token *); 118 extern void token_free(struct token *);
111 extern struct token *token_create(int, char *strval, int, int, const char *); 119 extern struct token *token_create(int, char *strval, int, int, const char *);
112 extern struct token *token_dup(struct token *); 120 extern struct token *token_dup(struct token *);
113 /* add a token to the end of a list */ 121 /* add a token to the end of a list */
114 extern void token_append(struct token *, struct token *); 122 extern void token_list_append(struct token_list *, struct token *);
115 /* add a token to the start of a list */ 123 /* add a token to the start of a list */
116 extern void token_prepend(struct token *, struct token *); 124 extern void token_list_prepend(struct token_list *, struct token *);
117 /* remove individual token from whatever list it is on */ 125 /* remove individual token from whatever list it is on */
118 extern void token_remove(struct token *); 126 extern void token_list_remove(struct token *);
119 /* replace token with list of tokens specified */ 127 /* replace token with list of tokens specified */
120 extern void token_replace(struct token *, struct token *); 128 extern void token_list_insert(struct token_list *, struct token *, struct token *);
129 /* duplicate a list to a new list pointer */
130 extern struct token_list *token_list_dup(struct token_list *);
121 /* print a token out */ 131 /* print a token out */
132 extern struct token_list *token_list_create(void);
133 extern void token_list_destroy(struct token_list *);
134
122 extern void token_print(struct token *, FILE *); 135 extern void token_print(struct token *, FILE *);
123 136
124 #endif // token_h_seen___ 137 #endif // token_h_seen___