DXF: break loop when get target value.[WIP]

[joccau]

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

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None

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[FORMAT CHECKER NOTIFICATION]

Notice: To remove the do-not-merge/needs-linked-issue label, please provide the linked issue number on one line in the PR body, for example: Issue Number: close #123 or Issue Number: ref #456.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.2026%. Comparing base (a22b842) to head (6d1f6b3).
Report is 47 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #57581        +/-   ##
================================================
+ Coverage   72.8488%   73.2026%   +0.3537%     
================================================
  Files          1672       1676         +4     
  Lines        462666     474383     +11717     
================================================
+ Hits         337047     347261     +10214     
- Misses       104821     106064      +1243     
- Partials      20798      21058       +260     

Flag	Coverage Δ
integration	43.4265% <50.0000%> (?)
unit	72.2513% <100.0000%> (+0.0296%)	⬆️

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

Components	Coverage Δ
dumpling	52.7673% <ø> (ø)
parser	∅ <ø> (∅)
br	43.2963% <ø> (-1.8263%)	⬇️

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