Custom label

[kentr0w]

What's done:

Implemented rule, added tests and documentation.

Actions checklist

• Implemented Rule, added Warnings
• Added tests on checks
• Added tests on fixers
• Updated diktat-analysis.yml
• Updated available-rules.md
• closes Describe and implement rules on labels usage #697

[codecov]

Codecov Report

Merging #715 (5d34060) into master (9eefb12) will increase coverage by 0.04%.
The diff coverage is 94.44%.

@@             Coverage Diff              @@
##             master     #715      +/-   ##
============================================
+ Coverage     80.13%   80.17%   +0.04%     
- Complexity     1895     1901       +6     
============================================
  Files            90       91       +1     
  Lines          4912     4927      +15     
  Branches       1575     1579       +4     
============================================
+ Hits           3936     3950      +14     
  Misses          238      238              
- Partials        738      739       +1     

Flag	Coverage Δ	Complexity Δ
unittests	80.17% <94.44%> (+0.04%)	0.00 <10.00> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ	Complexity Δ
...at-rules/src/main/kotlin/generated/WarningNames.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
...otlin/org/cqfn/diktat/ruleset/rules/CustomLabel.kt	91.66% <91.66%> (ø)	10.00 <10.00> (?)
...tlin/org/cqfn/diktat/ruleset/constants/Warnings.kt	97.74% <100.00%> (+0.01%)	11.00 <0.00> (ø)
.../cqfn/diktat/ruleset/rules/BlockStructureBraces.kt	79.64% <100.00%> (ø)	52.00 <0.00> (-2.00)
.../ruleset/rules/BracesInConditionalsAndLoopsRule.kt	78.57% <100.00%> (ø)	27.00 <0.00> (-2.00)
...cqfn/diktat/ruleset/rules/DiktatRuleSetProvider.kt	93.33% <100.00%> (+0.06%)	11.00 <0.00> (ø)
...tlin/org/cqfn/diktat/ruleset/utils/AstConstants.kt	100.00% <100.00%> (ø)	0.00 <0.00> (ø)
...tlin/org/cqfn/diktat/ruleset/utils/AstNodeUtils.kt	81.32% <100.00%> (ø)	0.00 <0.00> (ø)

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[petertrr]

Does AST allow to distinguish label declaration and label usage?

[kentr0w]

No , in AST they look same, that why I check stopWords near them