src/stdlib/tables.h


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

// Hash table datastructure with methods and type information

#pragma once

#include <stdbool.h>
#include <stdint.h>
#include <string.h>

#include "datatypes.h"
#include "lists.h"
#include "types.h"
#include "util.h"

#define EMPTY_TABLE ((Table_t){.entries.data = &_EMPTY_LIST_SENTINEL})

#define Table(key_t, val_t, key_info, value_info, fb, N, ...)                                                          \
    ({                                                                                                                 \
        struct {                                                                                                       \
            key_t k;                                                                                                   \
            val_t v;                                                                                                   \
        } ents[N] = {__VA_ARGS__};                                                                                     \
        Table_t table = Table$from_entries(                                                                            \
            (List_t){                                                                                                  \
                .data = memcpy(GC_MALLOC(sizeof(ents)), ents, sizeof(ents)),                                           \
                .length = sizeof(ents) / sizeof(ents[0]),                                                              \
                .stride = (void *)&ents[1] - (void *)&ents[0],                                                         \
            },                                                                                                         \
            Table$info(key_info, value_info));                                                                         \
        table.fallback = fb;                                                                                           \
        table;                                                                                                         \
    })

Table_t Table$from_entries(List_t entries, const TypeInfo_t *type);
void *Table$get(Table_t t, const void *key, const TypeInfo_t *type);
#define Table$get_optional(table_expr, key_t, val_t, key_expr, nonnull_var, nonnull_expr, null_expr, info_expr)        \
    ({                                                                                                                 \
        const Table_t t = table_expr;                                                                                  \
        const key_t k = key_expr;                                                                                      \
        val_t *nonnull_var = Table$get(t, &k, info_expr);                                                              \
        nonnull_var ? nonnull_expr : null_expr;                                                                        \
    })
#define Table$get_checked(table_expr, key_t, val_t, key_expr, start, end, info_expr)                                   \
    ({                                                                                                                 \
        const Table_t t = table_expr;                                                                                  \
        const key_t key = key_expr;                                                                                    \
        const TypeInfo_t *info = info_expr;                                                                            \
        val_t *value = Table$get(t, &key, info);                                                                       \
        if (unlikely(value == NULL))                                                                                   \
            fail_source(__SOURCE_FILE__, start, end,                                                                   \
                        "This key was not found in the table: ", generic_as_text(&key, false, info->TableInfo.key),    \
                        "\n");                                                                                         \
        *value;                                                                                                        \
    })
#define Table$get_or_setdefault(table_expr, key_t, val_t, key_expr, default_expr, info_expr)                           \
    ({                                                                                                                 \
        Table_t *t = table_expr;                                                                                       \
        const key_t k = key_expr;                                                                                      \
        if (t->entries.data_refcount > 0)                                                                              \
            List$compact(&t->entries, sizeof(struct {                                                                  \
                key_t k;                                                                                               \
                val_t v;                                                                                               \
            }));                                                                                                       \
        val_t *v = Table$get(*t, &k, info_expr);                                                                       \
        v ? v : (val_t *)Table$reserve(t, &k, (val_t[1]){default_expr}, info_expr);                                    \
    })
#define Table$get_or_default(table_expr, key_t, val_t, key_expr, default_expr, info_expr)                              \
    ({                                                                                                                 \
        const Table_t t = table_expr;                                                                                  \
        const key_t k = key_expr;                                                                                      \
        val_t *v = Table$get(t, &k, info_expr);                                                                        \
        v ? *v : default_expr;                                                                                         \
    })
#define Table$has_value(table_expr, key_expr, info_expr)                                                               \
    ({                                                                                                                 \
        const Table_t t = table_expr;                                                                                  \
        __typeof(key_expr) k = key_expr;                                                                               \
        (Table$get(t, &k, info_expr) != NULL);                                                                         \
    })
PUREFUNC void *Table$get_raw(Table_t t, const void *key, const TypeInfo_t *type);
CONSTFUNC void *Table$entry(Table_t t, int64_t n);
void *Table$reserve(Table_t *t, const void *key, const void *value, const TypeInfo_t *type);
void Table$set(Table_t *t, const void *key, const void *value, const TypeInfo_t *type);
#define Table$set_value(t, key_expr, value_expr, type)                                                                 \
    ({                                                                                                                 \
        __typeof(key_expr) k = key_expr;                                                                               \
        __typeof(value_expr) v = value_expr;                                                                           \
        Table$set(t, &k, &v, type);                                                                                    \
    })
void Table$remove(Table_t *t, const void *key, const TypeInfo_t *type);
#define Table$remove_value(t, key_expr, type)                                                                          \
    ({                                                                                                                 \
        __typeof(key_expr) k = key_expr;                                                                               \
        Table$remove(t, &k, type);                                                                                     \
    })

Table_t Table$intersection(Table_t a, Table_t b, const TypeInfo_t *type);
Table_t Table$with(Table_t a, Table_t b, const TypeInfo_t *type);
Table_t Table$without(Table_t a, Table_t b, const TypeInfo_t *type);
Table_t Table$difference(Table_t a, Table_t b, const TypeInfo_t *type);
Table_t Table$with_fallback(Table_t t, OptionalTable_t fallback);

void Table$clear(Table_t *t);
Table_t Table$sorted(Table_t t, const TypeInfo_t *type);
void Table$mark_copy_on_write(Table_t *t);
#define TABLE_INCREF(t)                                                                                                \
    ({                                                                                                                 \
        LIST_INCREF((t).entries);                                                                                      \
        if ((t).bucket_info)                                                                                           \
            (t).bucket_info->data_refcount += ((t).bucket_info->data_refcount < TABLE_MAX_DATA_REFCOUNT);              \
    })
#define TABLE_COPY(t)                                                                                                  \
    ({                                                                                                                 \
        TABLE_INCREF(t);                                                                                               \
        t;                                                                                                             \
    })
PUREFUNC int32_t Table$compare(const void *x, const void *y, const TypeInfo_t *type);
PUREFUNC bool Table$equal(const void *x, const void *y, const TypeInfo_t *type);
PUREFUNC uint64_t Table$hash(const void *t, const TypeInfo_t *type);
Text_t Table$as_text(const void *t, bool colorize, const TypeInfo_t *type);
PUREFUNC bool Table$is_none(const void *obj, const TypeInfo_t *);

CONSTFUNC void *Table$str_entry(Table_t t, int64_t n);
PUREFUNC void *Table$str_get(Table_t t, const char *key);
PUREFUNC void *Table$str_get_raw(Table_t t, const char *key);
void Table$str_set(Table_t *t, const char *key, const void *value);
void *Table$str_reserve(Table_t *t, const char *key, const void *value);
void Table$str_remove(Table_t *t, const char *key);
void Table$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t *type);
void Table$deserialize(FILE *in, void *outval, List_t *pointers, const TypeInfo_t *type);

#define Table$length(t) ((t).entries.length)

extern const TypeInfo_t Present$$info;
extern const Present$$type PRESENT;
extern const TypeInfo_t CStrToVoidStarTable;

#define Table$metamethods                                                                                              \
    {                                                                                                                  \
        .as_text = Table$as_text,                                                                                      \
        .compare = Table$compare,                                                                                      \
        .equal = Table$equal,                                                                                          \
        .hash = Table$hash,                                                                                            \
        .is_none = Table$is_none,                                                                                      \
        .serialize = Table$serialize,                                                                                  \
        .deserialize = Table$deserialize,                                                                              \
    }

#define Table$info(key_expr, value_expr)                                                                               \
    &((TypeInfo_t){.size = sizeof(Table_t),                                                                            \
                   .align = __alignof__(Table_t),                                                                      \
                   .tag = TableInfo,                                                                                   \
                   .TableInfo.key = key_expr,                                                                          \
                   .TableInfo.value = value_expr,                                                                      \
                   .metamethods = Table$metamethods})
#define Set$info(item_info)                                                                                            \
    &((TypeInfo_t){.size = sizeof(Table_t),                                                                            \
                   .align = __alignof__(Table_t),                                                                      \
                   .tag = TableInfo,                                                                                   \
                   .TableInfo.key = item_info,                                                                         \
                   .TableInfo.value = &Void$info,                                                                      \
                   .metamethods = Table$metamethods})