Analyze

Reports lint rules violations.

info

You need to configure rules entry in the analysis_options.yaml before running this command.

To execute the command, run:

$ dcm analyze lib # or dcm a lib

Full command description:

Usage: dcm analyze [arguments] <directories>
-h, --help                                       Print this usage information.


-r, --reporter=<console>                         Analysis output format.
                                                 [console(Free+) (default), json(Teams+), codeclimate(Teams+), gitlab(Teams+), checkstyle(Teams+), github(Teams+), sonar(Teams+)]
-a, --absolute-path                              Show absolute paths in console reporter output.
    --json-path=<path/to/file.json>              Path to the JSON file with the analysis output.


-c, --print-config                               Print resolved config.


    --root-folder=<./>                           Root folder.
                                                 (defaults to the current directory)
    --sdk-path=<directory-path>                  Dart SDK directory path.
                                                 If the project has a `.fvm/flutter_sdk` symlink, it will be used if the SDK is not found. 
    --exclude=<{**/*.g.dart,**/*.freezed.dart}>  File paths in Glob syntax to be exclude.
                                                 (defaults to "{**/*.g.dart,**/*.freezed.dart}")


    --[no-]congratulate                          Show output even when there are no issues.


    --verbose                                    Show verbose logs.


    --ci-key                                     The license key to run on CI server.
    --email                                      The email used to purchase the license.


    --no-analytics                               Disable sending anonymous usage statistics.


    --[no-]fatal-style                           Treat style level issues as fatal.
    --[no-]fatal-warnings                        Treat warning level issues as fatal.
                                                 (defaults to on)

Output Example

Console (default)

Use --reporter=console to get output in console format.

JSON

Use --reporter=json to get output as a single JSON object containing metadata and the list of lint issues.

Format specification

The root object fields are

• formatVersion - an integer representing the format version (will be incremented each time the serialization format changes)
• timestamp - a creation time of the report in YYYY-MM-DD HH:MM:SS format
• records - an array of objects

{
  "formatVersion": 2,
  "timestamp": "2021-04-11 14:44:42",
  "records": [
    {
      ...
    },
    {
      ...
    },
    {
      ...
    }
  ]
}

The record object fields are

• path - a relative path to the target file
• issues - an array of issues detected in the target file

{
  "path": "lib/src/metrics/metric_computation_result.dart",
  "issues": [
    ...
  ]
}

The issue object fields are

• ruleId - an id of the rule associated with the issue
• documentation - an url of a page containing documentation associated with the issue
• codeSpan - a source code span associated with the issue
• severity - a severity of the issue
• message - a short message

{
  "ruleId": "avoid-long-parameter-list",
  "documentation": "https://dcm.dev/docs/rules/commont/avoid-long-parameter-list",
  "codeSpan": {
    ...
  },
  "severity": "warning",
  "message": "Long Parameter List. This function require 5 arguments.",
}

The code span object fields are

• start - a start location of an entity
• end - an end location of an entity
• text - a source code text of an entity

{
  "start": {
    ...
  },
  "end": {
    ...
  },
  "text": "entity source code"
}

The location object fields are

• offset - a zero-based offset of the location in the source
• line - a zero-based line of the location in the source
• column - a zero-based column of the location in the source

{
  "offset": 156,
  "line": 7,
  "column": 1
}

GitLab

Use --reporter=gitlab to get output in a GitLab-compatible format. To learn how to integrate DCM with GitLab, refer to this guide.

Code Climate

Use --reporter=codeclimate to get output in Code Climate format.

Output example

{"type":"issue","check_name":"prefer-match-file-name","description":"The first class name does not match the file name. Try renaming it.","categories":["Bug Risk"],"location":{"path":"lib/main.dart","positions":{"begin":{"column":7,"line":12},"end":{"column":12,"line":12}}},"severity":"critical","fingerprint":"99d316420d21b4c371325ad8d3092980"}
{"type":"issue","check_name":"proper-super-calls","description":"This 'super' call must come first.","categories":["Bug Risk"],"location":{"path":"lib/main.dart","positions":{"begin":{"column":5,"line":51},"end":{"column":23,"line":51}}},"severity":"critical","fingerprint":"5088440ac641ab4c3dc9e8282c95bab7"}

Checkstyle

Use --reporter=checkstyle to get output in Checkstyle format.

Output example

<?xml version="1.0"?>
<checkstyle version="10.0">
  <file name="lib/src/analyzers/lint_analyzer/lint_analyzer.dart">
    <error line="168" column="3" severity="ignore" message="Long method. This method contains 63 lines with code." source="long-method"/>
  </file>
  <file name="lib/src/analyzers/lint_analyzer/rules/rules_list/avoid_returning_widgets/visit_declaration.dart">
    <error line="3" column="1" severity="ignore" message="Long Parameter List. This function require 6 arguments." source="long-parameter-list"/>
  </file>
  <file name="lib/src/analyzers/lint_analyzer/reporters/utility_selector.dart">
    <error line="27" column="3" severity="ignore" message="Long method. This method contains 53 lines with code." source="long-method"/>
  </file>
  <file name="lib/src/analyzers/lint_analyzer/reporters/reporters_list/html/utility_functions.dart">
    <error line="45" column="1" severity="ignore" message="Long function. This function contains 56 lines with code." source="long-method"/>
  </file>
  <file name="lib/src/analyzers/lint_analyzer/reporters/reporters_list/html/lint_html_reporter.dart">
    <error line="74" column="3" severity="ignore" message="Long method. This method contains 136 lines with code." source="long-method"/>
    <error line="330" column="3" severity="ignore" message="Long method. This method contains 159 lines with code." source="long-method"/>
  </file>
</checkstyle>

note

Checkstyle format is supported by Bitbucket. To learn how to integrate DCM with Bitbucket, refer to this guide.

Sonar

Use --reporter=sonar to get output in SonarQube's generic format for external issues.

Output example

{
  "rules": [
    {
      "cleanCodeAttribute": "LOGICAL",
      "description": "To learn more, visit the documentation https://dcm.dev/docs/rules/common/prefer-match-file-name",
      "engineId": "dcm",
      "id": "prefer-match-file-name",
      "impacts": [
        {
          "severity": "MEDIUM",
          "softwareQuality": "RELIABILITY"
        }
      ],
      "name": "prefer-match-file-name"
    },
    {
      "cleanCodeAttribute": "LOGICAL",
      "description": "To learn more, visit the documentation https://dcm.dev/docs/rules/flutter/proper-super-calls",
      "engineId": "dcm",
      "id": "proper-super-calls",
      "impacts": [
        {
          "severity": "MEDIUM",
          "softwareQuality": "RELIABILITY"
        }
      ],
      "name": "proper-super-calls"
    },
  ],
  "issues": [
    {
      "effortMinutes": 2,
      "primaryLocation": {
        "filePath": "lib/main.dart",
        "message": "The first class name does not match the file name. Try renaming it.",
        "textRange": {
          "endColumn": 12,
          "endLine": 12,
          "startColumn": 7,
          "startLine": 12
        }
      },
      "ruleId": "prefer-match-file-name"
    },
    {
      "effortMinutes": 5,
      "primaryLocation": {
        "filePath": "lib/main.dart",
        "message": "This 'super' call must come first.",
        "textRange": {
          "endColumn": 23,
          "endLine": 51,
          "startColumn": 5,
          "startLine": 51
        }
      },
      "ruleId": "proper-super-calls"
    }
  ]
}