-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Richard Kosegi <richard.kosegi@gmail.com>
- Loading branch information
Showing
5 changed files
with
294 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,48 @@ | ||
/* | ||
Copyright 2024 Richard Kosegi | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package path | ||
|
||
type builder struct { | ||
components []component | ||
} | ||
|
||
func (b *builder) Reset() Builder { | ||
b.components = nil | ||
return b | ||
} | ||
|
||
func (b *builder) Build() Path { | ||
c := make([]component, len(b.components)) | ||
copy(c, b.components) | ||
return &path{components: c} | ||
} | ||
|
||
func (b *builder) Append(opts ...AppendOpt) Builder { | ||
if len(opts) == 0 { | ||
panic("no append option provided by caller") | ||
} | ||
c := &component{} | ||
for _, opt := range opts { | ||
opt(c) | ||
} | ||
b.components = append(b.components, *c) | ||
return b | ||
} | ||
|
||
func NewBuilder() Builder { | ||
return &builder{} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,62 @@ | ||
/* | ||
Copyright 2024 Richard Kosegi | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package path | ||
|
||
import ( | ||
"github.com/stretchr/testify/assert" | ||
"testing" | ||
) | ||
|
||
func TestBuilder(t *testing.T) { | ||
b := NewBuilder(). | ||
Append(Simple("root")). | ||
Append(Wildcard()). | ||
Append(Numeric(1)). | ||
Append(AfterLast()) | ||
p := b.Build() | ||
|
||
pc := p.Components() | ||
|
||
assert.False(t, p.IsEmpty()) | ||
assert.Equal(t, 4, len(pc)) | ||
assert.Equal(t, "root", pc[0].Value()) | ||
assert.True(t, pc[1].IsWildcard()) | ||
assert.True(t, pc[2].IsNumeric()) | ||
assert.Equal(t, "1", pc[2].Value()) | ||
assert.Equal(t, 1, pc[2].NumericValue()) | ||
assert.True(t, pc[3].IsInsertAfterLast()) | ||
assert.False(t, p.Last().IsNumeric()) | ||
|
||
b.Reset() | ||
assert.True(t, b.Build().IsEmpty()) | ||
} | ||
|
||
func TestBuilderAppendNoOption(t *testing.T) { | ||
defer func() { | ||
recover() | ||
}() | ||
NewBuilder().Append() | ||
assert.Fail(t, "should not be here") | ||
} | ||
|
||
func TestPathGetLastEmpty(t *testing.T) { | ||
defer func() { | ||
recover() | ||
}() | ||
NewBuilder().Build().Last() | ||
assert.Fail(t, "should not be here") | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,46 @@ | ||
/* | ||
Copyright 2024 Richard Kosegi | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package path | ||
|
||
type component struct { | ||
value string | ||
// rfc6901 - pointer after last list item "-" | ||
afterLast bool | ||
wildcard bool | ||
num int | ||
isNumeric bool | ||
} | ||
|
||
func (c component) IsInsertAfterLast() bool { | ||
return c.afterLast | ||
} | ||
|
||
func (c component) IsNumeric() bool { | ||
return c.isNumeric | ||
} | ||
|
||
func (c component) NumericValue() int { | ||
return c.num | ||
} | ||
|
||
func (c component) IsWildcard() bool { | ||
return c.wildcard | ||
} | ||
|
||
func (c component) Value() string { | ||
return c.value | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,73 @@ | ||
/* | ||
Copyright 2024 Richard Kosegi | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package path | ||
|
||
import "strconv" | ||
|
||
type path struct { | ||
components []component | ||
} | ||
|
||
func (p path) Last() Component { | ||
if len(p.components) == 0 { | ||
panic("empty path") | ||
} | ||
return p.components[len(p.components)-1] | ||
} | ||
|
||
func (p path) IsEmpty() bool { | ||
return len(p.components) == 0 | ||
} | ||
|
||
func (p path) Components() []Component { | ||
c := make([]Component, len(p.components)) | ||
for i := range p.components { | ||
c[i] = p.components[i] | ||
} | ||
return c | ||
} | ||
|
||
func AfterLast() AppendOpt { | ||
return func(c *component) { | ||
c.afterLast = true | ||
c.value = "-" | ||
} | ||
} | ||
|
||
func Wildcard() AppendOpt { | ||
return func(c *component) { | ||
c.wildcard = true | ||
c.isNumeric = false | ||
c.afterLast = false | ||
} | ||
} | ||
|
||
func Numeric(val int) AppendOpt { | ||
return func(c *component) { | ||
c.value = strconv.Itoa(val) | ||
c.isNumeric = true | ||
c.wildcard = false | ||
c.afterLast = false | ||
c.num = val | ||
} | ||
} | ||
|
||
func Simple(value string) AppendOpt { | ||
return func(c *component) { | ||
c.value = value | ||
} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,65 @@ | ||
/* | ||
Copyright 2024 Richard Kosegi | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package path | ||
|
||
// Builder provides convenient way to construct Path using fluent builder pattern. | ||
type Builder interface { | ||
// Append adds path component to the end of path. | ||
Append(opts ...AppendOpt) Builder | ||
|
||
// Reset clears internal state of builder. | ||
// Path instances created using this builder previously are unaffected by this operation. | ||
Reset() Builder | ||
|
||
// Build creates Path using current state. | ||
// It's safe to call this function multiple times or re-use it afterward, | ||
// it will always create fresh Path everytime. | ||
Build() Path | ||
} | ||
|
||
type Component interface { | ||
// IsInsertAfterLast returns true if this path component points to non-existent item after last element in the list. | ||
// This is required by JSON pointer (rfc6901) during append to the end of list. | ||
IsInsertAfterLast() bool | ||
|
||
// IsNumeric returns true if name is numeric value according to rfc6901 | ||
IsNumeric() bool | ||
|
||
// NumericValue gets number that points to array element with the zero-based index. | ||
// Only valid if IsNumeric returns true. | ||
NumericValue() int | ||
|
||
// IsWildcard returns true if this path element represent wildcard match, ie equal to any value. | ||
// This is used e.g. in property paths such as "x.y.z.*.w" | ||
IsWildcard() bool | ||
|
||
// Value returns canonical value of this component. | ||
Value() string | ||
} | ||
|
||
type Path interface { | ||
// Components returns copy of path components in this path | ||
Components() []Component | ||
|
||
// IsEmpty returns true if Path does not have any components. | ||
IsEmpty() bool | ||
|
||
// Last gets very last path Component, panics if path is empty. | ||
Last() Component | ||
} | ||
|
||
type AppendOpt func(*component) |