nounsql_core/
dialect.rs

1/// 出力ターゲット。型名・予約語・DDLの書き方を持つ。
2#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3pub struct Dialect {
4    pub name: &'static str,
5    pub types: &'static [&'static str],
6    pub reserved: &'static [&'static str],
7    /// 識別子の上限バイト数。超えた分はDBが黙って切り詰める。
8    pub max_identifier: usize,
9}
10
11pub const POSTGRES: Dialect = Dialect {
12    name: "postgres",
13    types: POSTGRES_TYPES,
14    reserved: POSTGRES_RESERVED,
15    // NAMEDATALEN - 1
16    max_identifier: 63,
17};
18
19pub const ALL: &[Dialect] = &[POSTGRES];
20
21pub fn default() -> Dialect {
22    POSTGRES
23}
24
25pub fn by_name(name: &str) -> Option<Dialect> {
26    ALL.iter().copied().find(|d| d.name == name)
27}
28
29pub fn names() -> Vec<&'static str> {
30    ALL.iter().map(|d| d.name).collect()
31}
32
33impl Dialect {
34    pub fn has_type(&self, name: &str) -> bool {
35        self.types.contains(&name)
36    }
37
38    pub fn is_reserved(&self, name: &str) -> bool {
39        self.reserved.contains(&name.to_ascii_lowercase().as_str())
40    }
41
42    /// serial 系のPKを参照するFKは対応する整数型になる。
43    pub fn fk_type(&self, pk_type: &str) -> String {
44        match pk_type {
45            "smallserial" | "serial2" => "smallint",
46            "serial" | "serial4" => "integer",
47            "bigserial" | "serial8" => "bigint",
48            other => other,
49        }
50        .to_string()
51    }
52}
53
54const POSTGRES_TYPES: &[&str] = &[
55    "smallint",
56    "integer",
57    "bigint",
58    "int2",
59    "int4",
60    "int8",
61    "decimal",
62    "numeric",
63    "real",
64    "float4",
65    "float8",
66    "smallserial",
67    "serial",
68    "bigserial",
69    "serial2",
70    "serial4",
71    "serial8",
72    "money",
73    "varchar",
74    "char",
75    "text",
76    "bytea",
77    "timestamp",
78    "timestamptz",
79    "date",
80    "time",
81    "timetz",
82    "interval",
83    "boolean",
84    "bool",
85    "point",
86    "line",
87    "lseg",
88    "box",
89    "path",
90    "polygon",
91    "circle",
92    "cidr",
93    "inet",
94    "macaddr",
95    "macaddr8",
96    "bit",
97    "varbit",
98    "tsvector",
99    "tsquery",
100    "uuid",
101    "xml",
102    "json",
103    "jsonb",
104    "jsonpath",
105    "int4range",
106    "int8range",
107    "numrange",
108    "tsrange",
109    "tstzrange",
110    "daterange",
111    "int4multirange",
112    "int8multirange",
113    "nummultirange",
114    "tsmultirange",
115    "tstzmultirange",
116    "datemultirange",
117    "pg_lsn",
118    "pg_snapshot",
119    "oid",
120    "regclass",
121    "regproc",
122    "regprocedure",
123    "regoper",
124    "regoperator",
125    "regtype",
126    "regrole",
127    "regnamespace",
128    "regconfig",
129    "regdictionary",
130];
131
132const POSTGRES_RESERVED: &[&str] = &[
133    "all",
134    "analyse",
135    "analyze",
136    "and",
137    "any",
138    "array",
139    "as",
140    "asc",
141    "asymmetric",
142    "authorization",
143    "binary",
144    "both",
145    "case",
146    "cast",
147    "check",
148    "collate",
149    "collation",
150    "column",
151    "concurrently",
152    "constraint",
153    "create",
154    "cross",
155    "current_catalog",
156    "current_date",
157    "current_role",
158    "current_schema",
159    "current_time",
160    "current_timestamp",
161    "current_user",
162    "default",
163    "deferrable",
164    "desc",
165    "distinct",
166    "do",
167    "else",
168    "end",
169    "except",
170    "false",
171    "fetch",
172    "for",
173    "foreign",
174    "freeze",
175    "from",
176    "full",
177    "grant",
178    "group",
179    "having",
180    "ilike",
181    "in",
182    "initially",
183    "inner",
184    "intersect",
185    "into",
186    "is",
187    "isnull",
188    "join",
189    "lateral",
190    "leading",
191    "left",
192    "like",
193    "limit",
194    "localtime",
195    "localtimestamp",
196    "natural",
197    "not",
198    "notnull",
199    "null",
200    "offset",
201    "on",
202    "only",
203    "or",
204    "order",
205    "outer",
206    "overlaps",
207    "placing",
208    "primary",
209    "references",
210    "returning",
211    "right",
212    "select",
213    "session_user",
214    "similar",
215    "some",
216    "symmetric",
217    "table",
218    "tablesample",
219    "then",
220    "to",
221    "trailing",
222    "true",
223    "union",
224    "unique",
225    "user",
226    "using",
227    "variadic",
228    "verbose",
229    "when",
230    "where",
231    "window",
232    "with",
233];
nounsql_core/dialect.rs

nounsql_core/
dialect.rs
