summaryrefslogtreecommitdiff
path: root/object.go
blob: 7428e0f9cfed118fb0bd43bc4b08897a682fef76 (plain)
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
package git

/*
#include <git2.h>
*/
import "C"
import "runtime"

type ObjectType int

const (
	ObjectAny    ObjectType = C.GIT_OBJ_ANY
	ObjectBad    ObjectType = C.GIT_OBJ_BAD
	ObjectCommit ObjectType = C.GIT_OBJ_COMMIT
	ObjectTree   ObjectType = C.GIT_OBJ_TREE
	ObjectBlob   ObjectType = C.GIT_OBJ_BLOB
	ObjectTag    ObjectType = C.GIT_OBJ_TAG
)

type Object interface {
	Free()
	Id() *Oid
	Type() ObjectType
	Owner() *Repository
}

type gitObject struct {
	ptr *C.git_object
	repo *Repository
}

func (t ObjectType) String() (string) {
	switch (t) {
	case ObjectAny:
		return "Any"
	case ObjectBad:
		return "Bad"
	case ObjectCommit:
		return "Commit"
	case ObjectTree:
		return "Tree"
	case ObjectBlob:
		return "Blob"
	case ObjectTag:
		return "Tag"
	}
	// Never reached
	return ""
}

func (o gitObject) Id() *Oid {
	return newOidFromC(C.git_object_id(o.ptr))
}

func (o gitObject) Type() ObjectType {
	return ObjectType(C.git_object_type(o.ptr))
}

// Owner returns a weak reference to the repository which owns this
// object
func (o gitObject) Owner() *Repository {
	return &Repository{
		ptr: C.git_object_owner(o.ptr),
	}
}

func (o *gitObject) Free() {
	runtime.SetFinalizer(o, nil)
	C.git_object_free(o.ptr)
}

func allocObject(cobj *C.git_object, repo *Repository) Object {
	obj := gitObject{
		ptr: cobj,
		repo: repo,
	}

	switch ObjectType(C.git_object_type(cobj)) {
	case ObjectCommit:
		commit := &Commit{
			gitObject: obj,
			cast_ptr:  (*C.git_commit)(cobj),
		}
		runtime.SetFinalizer(commit, (*Commit).Free)
		return commit

	case ObjectTree:
		tree := &Tree{
			gitObject: obj,
			cast_ptr:  (*C.git_tree)(cobj),
		}
		runtime.SetFinalizer(tree, (*Tree).Free)
		return tree

	case ObjectBlob:
		blob := &Blob{
			gitObject: obj,
			cast_ptr:  (*C.git_blob)(cobj),
		}
		runtime.SetFinalizer(blob, (*Blob).Free)
		return blob
	case ObjectTag:
		tag := &Tag{
			gitObject: obj,
			cast_ptr:  (*C.git_tag)(cobj),
		}
		runtime.SetFinalizer(tag, (*Tag).Free)
		return tag
	}

	return nil
}