Avoid looking up absent cells in rangeResolver

[paolobarbolini]

PR Details

While benchmarking the performance of SUMIFS I've discovered that when a range references an entire column or an entire row, excelize scans the entire theoretical range even if the file is smaller than that. This was already discovered by #2056.

Description

I've initially tried to reduce the scan range, but a lot of the code assume that rangeResolver is going to be scanning the entire range, so I've changed it to instead skip looking up cells that don't exist.

Related Issue

#2056

Motivation and Context

This makes a big performance difference.

How Has This Been Tested

I've run tests and also tested this on my projects.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

---

PR developed together with @Aprax14.

[codecov]

Codecov Report

Attention: Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 99.22%. Comparing base (91d36cc) to head (c82c7e3).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
calc.go	85.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2111      +/-   ##
==========================================
+ Coverage   99.20%   99.22%   +0.02%     
==========================================
  Files          32       32              
  Lines       30102    30114      +12     
==========================================
+ Hits        29864    29882      +18     
+ Misses        158      154       -4     
+ Partials       80       78       -2     

Flag	Coverage Δ
unittests	99.22% <85.00%> (+0.02%)	⬆️

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[xuri]

LGTM, thanks for your contribution. I added unit test based on your branch.