1
|
|
|
package ast |
2
|
|
|
|
3
|
|
|
import ( |
4
|
|
|
"fmt" |
5
|
|
|
) |
6
|
|
|
|
7
|
|
|
type ( |
8
|
|
|
// ReferenceType defines the type of reference. |
9
|
|
|
ReferenceType string |
10
|
|
|
) |
11
|
|
|
|
12
|
|
|
const ( |
13
|
|
|
UNSPECIFIED ReferenceType = "unspecified" |
14
|
|
|
PERMISSION ReferenceType = "permission" |
15
|
|
|
RELATION ReferenceType = "relation" |
16
|
|
|
ATTRIBUTE ReferenceType = "attribute" |
17
|
|
|
ENTITY ReferenceType = "entity" |
18
|
|
|
RULE ReferenceType = "rule" |
19
|
|
|
) |
20
|
|
|
|
21
|
|
|
// References - Map of all relational references extracted from the schema |
22
|
|
|
type References struct { |
23
|
|
|
// Map of entity references extracted from the schema |
24
|
|
|
entityReferences map[string]struct{} |
25
|
|
|
// Map of rule references extracted from the schema |
26
|
|
|
ruleReferences map[string]map[string]string |
27
|
|
|
|
28
|
|
|
// Map of permission references extracted from the schema |
29
|
|
|
// -> ["entity_name#permission_name"] = {} |
30
|
|
|
permissionReferences map[string]struct{} |
31
|
|
|
// Map of attribute references extracted from the schema |
32
|
|
|
// -> ["entity_name#attribute_name"] = "type" |
33
|
|
|
attributeReferences map[string]AttributeTypeStatement |
34
|
|
|
// Map of relation references extracted from the schema |
35
|
|
|
// -> ["entity_name#relation_name"] = []{"type", "type#relation"} |
36
|
|
|
relationReferences map[string][]RelationTypeStatement |
37
|
|
|
|
38
|
|
|
// Map of all relational references extracted from the schema |
39
|
|
|
// its include relation, attribute and permission references |
40
|
|
|
references map[string]ReferenceType |
41
|
|
|
} |
42
|
|
|
|
43
|
|
|
// NewReferences creates a new instance of References |
44
|
|
|
func NewReferences() *References { |
45
|
|
|
return &References{ |
46
|
|
|
entityReferences: map[string]struct{}{}, |
47
|
|
|
ruleReferences: map[string]map[string]string{}, |
48
|
|
|
permissionReferences: map[string]struct{}{}, |
49
|
|
|
attributeReferences: map[string]AttributeTypeStatement{}, |
50
|
|
|
relationReferences: map[string][]RelationTypeStatement{}, |
51
|
|
|
references: map[string]ReferenceType{}, |
52
|
|
|
} |
53
|
|
|
} |
54
|
|
|
|
55
|
|
|
// AddEntityReference sets a reference for an entity. |
56
|
|
|
func (refs *References) AddEntityReference(name string) error { |
57
|
|
|
if len(name) == 0 { |
58
|
|
|
return fmt.Errorf("name cannot be empty") |
59
|
|
|
} |
60
|
|
|
if refs.IsReferenceExist(name) { |
61
|
|
|
return fmt.Errorf("reference %s already exists", name) |
62
|
|
|
} |
63
|
|
|
refs.entityReferences[name] = struct{}{} |
64
|
|
|
refs.references[name] = ENTITY |
65
|
|
|
return nil |
66
|
|
|
} |
67
|
|
|
|
68
|
|
|
// AddRuleReference sets a reference for a rule. |
69
|
|
|
func (refs *References) AddRuleReference(name string, types map[string]string) error { |
70
|
|
|
if len(name) == 0 { |
71
|
|
|
return fmt.Errorf("name cannot be empty") |
72
|
|
|
} |
73
|
|
|
if refs.IsReferenceExist(name) { |
74
|
|
|
return fmt.Errorf("reference %s already exists", name) |
75
|
|
|
} |
76
|
|
|
refs.ruleReferences[name] = types |
77
|
|
|
refs.references[name] = RULE |
78
|
|
|
return nil |
79
|
|
|
} |
80
|
|
|
|
81
|
|
|
// AddRelationReferences sets references for a relation with its types. |
82
|
|
|
func (refs *References) AddRelationReferences(key string, types []RelationTypeStatement) error { |
83
|
|
|
if len(key) == 0 { |
84
|
|
|
return fmt.Errorf("key cannot be empty") |
85
|
|
|
} |
86
|
|
|
if refs.IsReferenceExist(key) { |
87
|
|
|
return fmt.Errorf("reference %s already exists", key) |
88
|
|
|
} |
89
|
|
|
refs.relationReferences[key] = types |
90
|
|
|
refs.references[key] = RELATION |
91
|
|
|
return nil |
92
|
|
|
} |
93
|
|
|
|
94
|
|
|
// AddPermissionReference sets a reference for a permission. |
95
|
|
|
func (refs *References) AddPermissionReference(key string) error { |
96
|
|
|
if len(key) == 0 { |
97
|
|
|
return fmt.Errorf("key cannot be empty") |
98
|
|
|
} |
99
|
|
|
if refs.IsReferenceExist(key) { |
100
|
|
|
return fmt.Errorf("reference %s already exists", key) |
101
|
|
|
} |
102
|
|
|
refs.permissionReferences[key] = struct{}{} |
103
|
|
|
refs.references[key] = PERMISSION |
104
|
|
|
return nil |
105
|
|
|
} |
106
|
|
|
|
107
|
|
|
// AddAttributeReferences sets references for an attribute with its type. |
108
|
|
|
func (refs *References) AddAttributeReferences(key string, typ AttributeTypeStatement) error { |
109
|
|
|
if len(key) == 0 { |
110
|
|
|
return fmt.Errorf("key cannot be empty") |
111
|
|
|
} |
112
|
|
|
if refs.IsReferenceExist(key) { |
113
|
|
|
return fmt.Errorf("reference %s already exists", key) |
114
|
|
|
} |
115
|
|
|
refs.attributeReferences[key] = typ |
116
|
|
|
refs.references[key] = ATTRIBUTE |
117
|
|
|
return nil |
118
|
|
|
} |
119
|
|
|
|
120
|
|
|
// UpdateRelationReferences updates the relationship references for a given key. |
121
|
|
|
// It replaces the existing relation types with the new ones provided. |
122
|
|
|
// If the key is empty, it returns an error. |
123
|
|
|
func (refs *References) UpdateRelationReferences(key string, types []RelationTypeStatement) error { |
124
|
|
|
if len(key) == 0 { |
125
|
|
|
return fmt.Errorf("key cannot be empty") |
126
|
|
|
} |
127
|
|
|
refs.relationReferences[key] = types // Update or set the relationship types for the key. |
128
|
|
|
refs.references[key] = RELATION // Mark this key as a relation reference. |
129
|
|
|
return nil |
130
|
|
|
} |
131
|
|
|
|
132
|
|
|
// UpdatePermissionReference updates the permission references for a given key. |
133
|
|
|
// This typically means marking a particular entity or action as permitted. |
134
|
|
|
// If the key is empty, it returns an error. |
135
|
|
|
func (refs *References) UpdatePermissionReference(key string) error { |
136
|
|
|
if len(key) == 0 { |
137
|
|
|
return fmt.Errorf("key cannot be empty") |
138
|
|
|
} |
139
|
|
|
refs.permissionReferences[key] = struct{}{} // Set the permission flag for the key. |
140
|
|
|
refs.references[key] = PERMISSION // Mark this key as a permission reference. |
141
|
|
|
return nil |
142
|
|
|
} |
143
|
|
|
|
144
|
|
|
// UpdateAttributeReferences updates the attribute references for a given key. |
145
|
|
|
// It associates a specific attribute type with the key. |
146
|
|
|
// If the key is empty, it returns an error. |
147
|
|
|
func (refs *References) UpdateAttributeReferences(key string, typ AttributeTypeStatement) error { |
148
|
|
|
if len(key) == 0 { |
149
|
|
|
return fmt.Errorf("key cannot be empty") |
150
|
|
|
} |
151
|
|
|
refs.attributeReferences[key] = typ // Set the attribute type for the key. |
152
|
|
|
refs.references[key] = ATTRIBUTE // Mark this key as an attribute reference. |
153
|
|
|
return nil |
154
|
|
|
} |
155
|
|
|
|
156
|
|
|
// RemoveRelationReferences removes the relationship references associated with a given key. |
157
|
|
|
// If the key is empty, it returns an error. |
158
|
|
|
func (refs *References) RemoveRelationReferences(key string) error { |
159
|
|
|
if len(key) == 0 { |
160
|
|
|
return fmt.Errorf("key cannot be empty") |
161
|
|
|
} |
162
|
|
|
delete(refs.relationReferences, key) // Remove the relationship reference for the key. |
163
|
|
|
delete(refs.references, key) // Remove the general reference. |
164
|
|
|
return nil |
165
|
|
|
} |
166
|
|
|
|
167
|
|
|
// RemovePermissionReference removes the permission references associated with a given key. |
168
|
|
|
// If the key is empty, it returns an error. |
169
|
|
|
func (refs *References) RemovePermissionReference(key string) error { |
170
|
|
|
if len(key) == 0 { |
171
|
|
|
return fmt.Errorf("key cannot be empty") |
172
|
|
|
} |
173
|
|
|
delete(refs.permissionReferences, key) // Remove the permission reference for the key. |
174
|
|
|
delete(refs.references, key) // Remove the general reference. |
175
|
|
|
return nil |
176
|
|
|
} |
177
|
|
|
|
178
|
|
|
// RemoveAttributeReferences removes the attribute references associated with a given key. |
179
|
|
|
// If the key is empty, it returns an error. |
180
|
|
|
func (refs *References) RemoveAttributeReferences(key string) error { |
181
|
|
|
if len(key) == 0 { |
182
|
|
|
return fmt.Errorf("key cannot be empty") |
183
|
|
|
} |
184
|
|
|
delete(refs.attributeReferences, key) // Remove the attribute reference for the key. |
185
|
|
|
delete(refs.references, key) // Remove the general reference. |
186
|
|
|
return nil |
187
|
|
|
} |
188
|
|
|
|
189
|
|
|
// GetReferenceType retrieves the type of the reference for a given key. |
190
|
|
|
func (refs *References) GetReferenceType(key string) (ReferenceType, bool) { |
191
|
|
|
if _, ok := refs.references[key]; ok { |
192
|
|
|
return refs.references[key], true |
193
|
|
|
} |
194
|
|
|
return UNSPECIFIED, false |
195
|
|
|
} |
196
|
|
|
|
197
|
|
|
// IsEntityReferenceExist checks if an entity reference exists for the given name. |
198
|
|
|
func (refs *References) IsEntityReferenceExist(name string) bool { |
199
|
|
|
if _, ok := refs.entityReferences[name]; ok { |
200
|
|
|
return ok |
201
|
|
|
} |
202
|
|
|
return false |
203
|
|
|
} |
204
|
|
|
|
205
|
|
|
// IsRelationReferenceExist checks if a relation reference exists for the given key. |
206
|
|
|
func (refs *References) IsRelationReferenceExist(name string) bool { |
207
|
|
|
if _, ok := refs.relationReferences[name]; ok { |
208
|
|
|
return true |
209
|
|
|
} |
210
|
|
|
return false |
211
|
|
|
} |
212
|
|
|
|
213
|
|
|
// IsAttributeReferenceExist checks if an attribute reference exists for the given key. |
214
|
|
|
func (refs *References) IsAttributeReferenceExist(name string) bool { |
215
|
|
|
if _, ok := refs.attributeReferences[name]; ok { |
216
|
|
|
return true |
217
|
|
|
} |
218
|
|
|
return false |
219
|
|
|
} |
220
|
|
|
|
221
|
|
|
// IsRuleReferenceExist checks if a rule reference exists for the given name. |
222
|
|
|
func (refs *References) IsRuleReferenceExist(name string) bool { |
223
|
|
|
if _, ok := refs.ruleReferences[name]; ok { |
224
|
|
|
return true |
225
|
|
|
} |
226
|
|
|
return false |
227
|
|
|
} |
228
|
|
|
|
229
|
|
|
// IsReferenceExist checks if a reference exists for the given key. |
230
|
|
|
func (refs *References) IsReferenceExist(name string) bool { |
231
|
|
|
if _, ok := refs.references[name]; ok { |
232
|
|
|
return true |
233
|
|
|
} |
234
|
|
|
return false |
235
|
|
|
} |
236
|
|
|
|
237
|
|
|
// GetAttributeReferenceTypeIfExist retrieves the attribute type for a given attribute reference key. |
238
|
|
|
func (refs *References) GetAttributeReferenceTypeIfExist(name string) (AttributeTypeStatement, bool) { |
239
|
|
|
if _, ok := refs.attributeReferences[name]; ok { |
240
|
|
|
return refs.attributeReferences[name], true |
241
|
|
|
} |
242
|
|
|
return AttributeTypeStatement{}, false |
243
|
|
|
} |
244
|
|
|
|
245
|
|
|
// GetRelationReferenceTypesIfExist retrieves the relation types for a given relation reference key. |
246
|
|
|
func (refs *References) GetRelationReferenceTypesIfExist(name string) ([]RelationTypeStatement, bool) { |
247
|
|
|
if _, ok := refs.relationReferences[name]; ok { |
248
|
|
|
return refs.relationReferences[name], true |
249
|
|
|
} |
250
|
|
|
return nil, false |
251
|
|
|
} |
252
|
|
|
|
253
|
|
|
// GetRuleArgumentTypesIfRuleExist retrieves the rule argument types for a given rule reference key. |
254
|
|
|
func (refs *References) GetRuleArgumentTypesIfRuleExist(name string) (map[string]string, bool) { |
255
|
|
|
if _, ok := refs.ruleReferences[name]; ok { |
256
|
|
|
return refs.ruleReferences[name], true |
257
|
|
|
} |
258
|
|
|
return map[string]string{}, false |
259
|
|
|
} |
260
|
|
|
|