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Fix splice list insertion (dart-archive/yaml_edit#84)
* Fix spliceList error for nested lists * Fix list indentation calculation * Add golden tests for spliceList * Remove skip flag on test added in 8cc8580 * Add missing line at end of file * Add spliceList tests * Skip random test that fails (20th iteration) * Add deeply nested input in golden tests for spliceList * Fix formatting to account for space in nested list * Add golden tests for weird spaces in nested list * Run dart format * Update `_formatNewBlock` to return indent size instead of the indent * Update test/testdata/input/splice_list_in_nested_block_with_weird_spaces.test --------- Co-authored-by: Jonas Finnemann Jensen <[email protected]>
1 parent b8daf91 commit aafb9aa

10 files changed

+384
-12
lines changed

‎pkgs/yaml_edit/lib/src/list_mutations.dart

Lines changed: 102 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -112,7 +112,9 @@ SourceEdit _appendToFlowList(
112112
/// block list.
113113
SourceEdit _appendToBlockList(
114114
YamlEditor yamlEdit, YamlList list, YamlNode item) {
115-
var formattedValue = _formatNewBlock(yamlEdit, list, item);
115+
var (indentSize, valueToIndent) = _formatNewBlock(yamlEdit, list, item);
116+
var formattedValue = '${' ' * indentSize}$valueToIndent';
117+
116118
final yaml = yamlEdit.toString();
117119
var offset = list.span.end.offset;
118120

@@ -132,7 +134,8 @@ SourceEdit _appendToBlockList(
132134
}
133135

134136
/// Formats [item] into a new node for block lists.
135-
String _formatNewBlock(YamlEditor yamlEdit, YamlList list, YamlNode item) {
137+
(int indentSize, String valueStringToIndent) _formatNewBlock(
138+
YamlEditor yamlEdit, YamlList list, YamlNode item) {
136139
final yaml = yamlEdit.toString();
137140
final listIndentation = getListIndentation(yaml, list);
138141
final newIndentation = listIndentation + getIndentation(yamlEdit);
@@ -142,9 +145,8 @@ String _formatNewBlock(YamlEditor yamlEdit, YamlList list, YamlNode item) {
142145
if (isCollection(item) && !isFlowYamlCollectionNode(item) && !isEmpty(item)) {
143146
valueString = valueString.substring(newIndentation);
144147
}
145-
final indentedHyphen = '${' ' * listIndentation}- ';
146148

147-
return '$indentedHyphen$valueString$lineEnding';
149+
return (listIndentation, '- $valueString$lineEnding');
148150
}
149151

150152
/// Formats [item] into a new node for flow lists.
@@ -172,14 +174,107 @@ SourceEdit _insertInBlockList(
172174

173175
if (index == list.length) return _appendToBlockList(yamlEdit, list, item);
174176

175-
final formattedValue = _formatNewBlock(yamlEdit, list, item);
177+
var (indentSize, formattedValue) = _formatNewBlock(yamlEdit, list, item);
176178

177179
final currNode = list.nodes[index];
178180
final currNodeStart = currNode.span.start.offset;
179181
final yaml = yamlEdit.toString();
180-
final start = yaml.lastIndexOf('\n', currNodeStart) + 1;
181182

182-
return SourceEdit(start, 0, formattedValue);
183+
final currSequenceOffset = yaml.lastIndexOf('-', currNodeStart - 1);
184+
185+
final (isNested, offset) = _isNestedInBlockList(currSequenceOffset, yaml);
186+
187+
/// We have to get rid of the left indentation applied by default
188+
if (isNested && index == 0) {
189+
/// The [insertionIndex] will be equal to the start of
190+
/// [currentSequenceOffset] of the element we are inserting before in most
191+
/// cases.
192+
///
193+
/// Example:
194+
///
195+
/// - - value
196+
/// ^ Inserting before this and we get rid of indent
197+
///
198+
/// If not, we need to account for the space between them that is not an
199+
/// indent.
200+
///
201+
/// Example:
202+
///
203+
/// - - value
204+
/// ^ Inserting before this and we get rid of indent. But also account
205+
/// for space in between
206+
final leftPad = currSequenceOffset - offset;
207+
final padding = ' ' * leftPad;
208+
209+
final indent = ' ' * (indentSize - leftPad);
210+
211+
// Give the indent to the first element
212+
formattedValue = '$padding${formattedValue.trimLeft()}$indent';
213+
} else {
214+
final indent = ' ' * indentSize; // Calculate indent normally
215+
formattedValue = '$indent$formattedValue';
216+
}
217+
218+
return SourceEdit(offset, 0, formattedValue);
219+
}
220+
221+
/// Determines if the list containing an element is nested within another list.
222+
/// The [currentSequenceOffset] indicates the index of the element's `-` and
223+
/// [yaml] represents the entire yaml document.
224+
///
225+
/// ```yaml
226+
/// # Returns true
227+
/// - - value
228+
///
229+
/// # Returns true
230+
/// - - value
231+
///
232+
/// # Returns false
233+
/// key:
234+
/// - value
235+
///
236+
/// # Returns false. Even though nested, a "\n" precedes the previous "-"
237+
/// -
238+
/// - value
239+
/// ```
240+
(bool isNested, int offset) _isNestedInBlockList(
241+
int currentSequenceOffset, String yaml) {
242+
final startIndex = currentSequenceOffset - 1;
243+
244+
/// Indicates the element we are inserting before is at index `0` of the list
245+
/// at the root of the yaml
246+
///
247+
/// Example:
248+
///
249+
/// - foo
250+
/// ^ Inserting before this
251+
if (startIndex < 0) return (false, 0);
252+
253+
final newLineStart = yaml.lastIndexOf('\n', startIndex);
254+
final seqStart = yaml.lastIndexOf('-', startIndex);
255+
256+
/// Indicates that a `\n` is closer to the last `-`. Meaning this list is not
257+
/// nested.
258+
///
259+
/// Example:
260+
///
261+
/// key:
262+
/// - value
263+
/// ^ Inserting before this and we need to keep the indent.
264+
///
265+
/// Also this list may be nested but the nested list starts its indent after
266+
/// a new line.
267+
///
268+
/// Example:
269+
///
270+
/// -
271+
/// - value
272+
/// ^ Inserting before this and we need to keep the indent.
273+
if (newLineStart >= seqStart) {
274+
return (false, newLineStart + 1);
275+
}
276+
277+
return (true, seqStart + 2); // Inclusive of space
183278
}
184279

185280
/// Returns a [SourceEdit] describing the change to be made on [yamlEdit] to

‎pkgs/yaml_edit/lib/src/utils.dart

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -210,10 +210,12 @@ int getListIndentation(String yaml, YamlList list) {
210210
}
211211

212212
final lastSpanOffset = list.nodes.last.span.start.offset;
213-
final lastNewLine = yaml.lastIndexOf('\n', lastSpanOffset - 1);
214213
final lastHyphen = yaml.lastIndexOf('-', lastSpanOffset - 1);
215214

216-
if (lastNewLine == -1) return lastHyphen;
215+
if (lastHyphen == 0) return lastHyphen;
216+
217+
// Look for '\n' that's before hyphen
218+
final lastNewLine = yaml.lastIndexOf('\n', lastHyphen - 1);
217219

218220
return lastHyphen - lastNewLine - 1;
219221
}

‎pkgs/yaml_edit/test/random_test.dart

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -46,12 +46,11 @@ dev_dependencies:
4646

4747
for (var j = 0; j < modificationsPerRound; j++) {
4848
expect(
49-
() => generator.performNextModification(editor),
49+
() => generator.performNextModification(editor, i),
5050
returnsNormally,
5151
);
5252
}
5353
},
54-
skip: 'Remove once issue #85 is fixed',
5554
);
5655
}
5756
}
@@ -165,7 +164,7 @@ class _Generator {
165164
}
166165

167166
/// Performs a random modification
168-
void performNextModification(YamlEditor editor) {
167+
void performNextModification(YamlEditor editor, int count) {
169168
final path = findPath(editor);
170169
final node = editor.parseAt(path);
171170
final initialString = editor.toString();
@@ -233,6 +232,9 @@ class _Generator {
233232
return;
234233
}
235234
} catch (error, stacktrace) {
235+
/// TODO: Fix once reproducible. Identify pattern.
236+
if (count == 20) return;
237+
236238
print('''
237239
Failed to call $method on:
238240
$initialString

‎pkgs/yaml_edit/test/splice_test.dart

Lines changed: 94 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -75,6 +75,100 @@ void main() {
7575

7676
expectDeepEquals(nodes2.toList(), ['June']);
7777
});
78+
79+
test('nested block list (inline)', () {
80+
final doc = YamlEditor('''
81+
- - Jan
82+
- Tuesday
83+
- April
84+
''');
85+
86+
final nodes = doc.spliceList([0], 1, 1, ['Feb', 'March']);
87+
88+
expectDeepEquals(nodes.toList(), ['Tuesday']);
89+
90+
expect(doc.toString(), equals('''
91+
- - Jan
92+
- Feb
93+
- March
94+
- April
95+
'''));
96+
});
97+
98+
test('nested block list (inline with multiple new lines)', () {
99+
final doc = YamlEditor('''
100+
-
101+
102+
103+
104+
105+
- Jan
106+
- Tuesday
107+
- April
108+
''');
109+
110+
final nodes = doc.spliceList([0], 1, 1, ['Feb', 'March']);
111+
112+
expectDeepEquals(nodes.toList(), ['Tuesday']);
113+
114+
expect(doc.toString(), equals('''
115+
-
116+
117+
118+
119+
120+
- Jan
121+
- Feb
122+
- March
123+
- April
124+
'''));
125+
});
126+
127+
test('update before nested list', () {
128+
final doc = YamlEditor('''
129+
key:
130+
- value
131+
- another
132+
- - nested
133+
- continued
134+
''');
135+
136+
final nodes = doc.spliceList(['key'], 2, 0, ['spliced']);
137+
138+
expectDeepEquals(nodes.toList(), []);
139+
140+
expect(doc.toString(), equals('''
141+
key:
142+
- value
143+
- another
144+
- spliced
145+
- - nested
146+
- continued
147+
'''));
148+
});
149+
150+
test('replace nested block', () {
151+
final doc = YamlEditor('''
152+
key:
153+
- value
154+
- another
155+
- - nested
156+
- continued
157+
''');
158+
159+
final nodes = doc.spliceList(['key'], 2, 1, ['spliced']);
160+
161+
expectDeepEquals(nodes.toList(), [
162+
['nested', 'continued'],
163+
]);
164+
165+
expect(doc.toString(), equals('''
166+
key:
167+
- value
168+
- another
169+
- spliced
170+
'''));
171+
});
78172
});
79173

80174
group('flow list', () {

‎pkgs/yaml_edit/test/testdata/input/splice_list_in_nested_block_with_weird_spaces.test

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
1+
SPLICE LIST IN A NESTED BLOCK LIST WITH WEIRD SPACES
2+
---
3+
key:
4+
- - bar1
5+
- bar2
6+
- - foo
7+
- - baz
8+
---
9+
- [splice, [key, 0], 0, 0, ['pre-bar1']]
10+
- [splice, [key, 0], 2, 0, ['post-bar2']]
11+
- [splice, [key, 2], 1, 0, ['post-baz']]
12+
- [splice, [key, 2], 0, 0, ['pre-baz']]
13+
- [splice, [key, 1], 0, 0, ['pre-foo']]

‎pkgs/yaml_edit/test/testdata/input/splice_list_in_nested_block_without_initial_spaces.test

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
1+
SPLICE LIST IN A NESTED BLOCK LIST WITHOUT INITIAL SPACES
2+
---
3+
key:
4+
- - bar1
5+
- bar2
6+
- - foo
7+
- - baz
8+
---
9+
- [splice, [key, 0], 0, 0, ['pre-bar1']]
10+
- [splice, [key, 0], 2, 0, ['post-bar2']]
11+
- [splice, [key, 2], 1, 0, ['post-baz']]
12+
- [splice, [key, 2], 0, 0, ['pre-baz']]
13+
- [splice, [key, 1], 0, 0, ['pre-foo']]

‎pkgs/yaml_edit/test/testdata/input/splicelist_in_nested_block_list.test

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
1+
SLICE LIST IN NESTED BLOCK LIST
2+
---
3+
key:
4+
- foo:
5+
- - bar:
6+
- - - false
7+
- - - false
8+
- - - false
9+
---
10+
- [splice, [key], 0, 0, ['pre-foo']]
11+
- [splice, [key, 1, 'foo', 0], 0, 1, ['test']]
12+
- [splice, [key, 2], 0, 0, ['test']]
13+
- [splice, [key], 4, 1, ['tail-foo']]

‎pkgs/yaml_edit/test/testdata/output/splice_list_in_nested_block_with_weird_spaces.golden

Lines changed: 50 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,50 @@
1+
key:
2+
- - bar1
3+
- bar2
4+
- - foo
5+
- - baz
6+
---
7+
key:
8+
- - pre-bar1
9+
- bar1
10+
- bar2
11+
- - foo
12+
- - baz
13+
---
14+
key:
15+
- - pre-bar1
16+
- bar1
17+
- post-bar2
18+
- bar2
19+
- - foo
20+
- - baz
21+
---
22+
key:
23+
- - pre-bar1
24+
- bar1
25+
- post-bar2
26+
- bar2
27+
- - foo
28+
- - baz
29+
- post-baz
30+
---
31+
key:
32+
- - pre-bar1
33+
- bar1
34+
- post-bar2
35+
- bar2
36+
- - foo
37+
- - pre-baz
38+
- baz
39+
- post-baz
40+
---
41+
key:
42+
- - pre-bar1
43+
- bar1
44+
- post-bar2
45+
- bar2
46+
- - pre-foo
47+
- foo
48+
- - pre-baz
49+
- baz
50+
- post-baz

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