3 * File name: ir/ir/irprintf.h
4 * Purpose: A little printf understanding some firm types.
5 * Author: Sebastian Hack
8 * Copyright: (c) 1998-2004 Universität Karlsruhe
9 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
15 * A little printf understanding some firm types.
16 * @author Sebastian Hack
27 /* forward definition */
31 * Something that can append strings and chars to something.
33 typedef struct _appender_t {
34 void (*init)(void *object, size_t n);
35 void (*append_char)(void *object, size_t n, char ch);
36 void (*append_str)(void *object, size_t n, const char *str);
40 * A callback function type to add something to an appender.
42 * @param app The appender.
43 * @param object The object for the appender.
44 * @param limit The limit for the appender.
45 * @param arg The thing to append.
47 typedef void (ir_printf_cb_t)(const appender_t *app, void *object, size_t limit, const void *arg);
50 * A string formatting routine for ir objects.
51 * This function rudimentarily implements a kind of printf(3) for ir
52 * nodes. Following conversion specifiers. No length, special or field
53 * width specifiers are accepted.
58 * - @%e An entity name.
59 * - @%E An entity ld name.
60 * - @%n A full description of a node.
61 * - @%O The opcode name of an ir node.
62 * - @%m The mode name of an ir mode.
63 * - @%N The node number of an ir node.
64 * - @%B The block node number of the nodes block.
68 * Each of these can be prepended by a '+' which means, that the given
69 * pointer is a collection of items specified by the format. In this
70 * case you also have to pass an iterator interface to ir_printf()
71 * suitable for the instance of the collection. So, imagine you have a
72 * @c pset of ir_nodes and want to dump it, you write:
76 * ir_printf("Some nodes: %*n\n", it_pset, nodes);
78 * The @c it_pset is an iterator interface (of type
79 * @c iterator_t that allows the dumper to traverse the set.
81 * As special case when working with collections, you can also give a
82 * callback function which will be invoked on each element in the
83 * collection. It gets the appender (the thing where the textual
84 * representation of the element is written to) and its parameters
85 * passed by the dumping function. Suppose you have your own datatype
86 * @c xyz_t and want to dump a pset of it, you have:
88 * void xyz_dump(const appender_t *app, void *object, size_t limit,
91 * const xyz_t *xyz = arg;
92 * app->append_str(object, limit, xyz->name);
97 * ir_printf("A set of xyz\'s: %*C\n", it_pset, xyzs, xyz_dump);
100 * @param fmt The format string.
102 void ir_printf(const char *fmt, ...);
107 void ir_fprintf(FILE *f, const char *fmt, ...);
112 void ir_snprintf(char *buf, size_t n, const char *fmt, ...);
117 void ir_vprintf(const char *fmt, va_list args);
122 void ir_vfprintf(FILE *f, const char *fmt, va_list args);
127 void ir_vsnprintf(char *buf, size_t len, const char *fmt, va_list args);
132 void ir_obst_vprintf(struct obstack *obst, const char *fmt, va_list args);