1package query
2
3import (
4 "fmt"
5
6 "github.com/MichaelMure/git-bug/entities/common"
7)
8
9// Parse parse a query DSL
10//
11// Ex: "status:open author:descartes sort:edit-asc"
12//
13// Supported filter qualifiers and syntax are described in docs/queries.md
14func Parse(query string) (*Query, error) {
15 tokens, err := tokenize(query)
16 if err != nil {
17 return nil, err
18 }
19
20 q := &Query{
21 OrderBy: OrderByCreation,
22 OrderDirection: OrderDescending,
23 }
24 sortingDone := false
25
26 for _, t := range tokens {
27 switch t.kind {
28 case tokenKindSearch:
29 q.Search = append(q.Search, t.term)
30 break
31
32 case tokenKindKV:
33 switch t.qualifier {
34 case "status", "state":
35 status, err := common.StatusFromString(t.value)
36 if err != nil {
37 return nil, err
38 }
39 q.Status = append(q.Status, status)
40 case "author":
41 q.Author = append(q.Author, t.value)
42 case "actor":
43 q.Actor = append(q.Actor, t.value)
44 case "participant":
45 q.Participant = append(q.Participant, t.value)
46 case "label":
47 q.Label = append(q.Label, t.value)
48 case "title":
49 q.Title = append(q.Title, t.value)
50 case "no":
51 switch t.value {
52 case "label":
53 q.NoLabel = true
54 default:
55 return nil, fmt.Errorf("unknown \"no\" filter \"%s\"", t.value)
56 }
57 case "sort":
58 if sortingDone {
59 return nil, fmt.Errorf("multiple sorting")
60 }
61 err = parseSorting(q, t.value)
62 if err != nil {
63 return nil, err
64 }
65 sortingDone = true
66
67 default:
68 return nil, fmt.Errorf("unknown qualifier \"%s\"", t.qualifier)
69 }
70
71 case tokenKindKVV:
72 switch t.qualifier {
73 case "metadata":
74 q.Metadata = append(q.Metadata, StringPair{Key: t.subQualifier, Value: t.value})
75
76 default:
77 return nil, fmt.Errorf("unknown qualifier \"%s:%s\"", t.qualifier, t.subQualifier)
78 }
79 }
80 }
81 return q, nil
82}
83
84func parseSorting(q *Query, value string) error {
85 switch value {
86 // default ASC
87 case "id-desc":
88 q.OrderBy = OrderById
89 q.OrderDirection = OrderDescending
90 case "id", "id-asc":
91 q.OrderBy = OrderById
92 q.OrderDirection = OrderAscending
93
94 // default DESC
95 case "creation", "creation-desc":
96 q.OrderBy = OrderByCreation
97 q.OrderDirection = OrderDescending
98 case "creation-asc":
99 q.OrderBy = OrderByCreation
100 q.OrderDirection = OrderAscending
101
102 // default DESC
103 case "edit", "edit-desc":
104 q.OrderBy = OrderByEdit
105 q.OrderDirection = OrderDescending
106 case "edit-asc":
107 q.OrderBy = OrderByEdit
108 q.OrderDirection = OrderAscending
109
110 default:
111 return fmt.Errorf("unknown sorting %s", value)
112 }
113
114 return nil
115}