improve: add some comments for AST nodes

[xieyuschen]

No description provided.

[codecov]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (7d0888a) 86.01% compared to head (0fe6a45) 86.53%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #372      +/-   ##
==========================================
+ Coverage   86.01%   86.53%   +0.52%     
==========================================
  Files         110      110              
  Lines       25833    25883      +50     
==========================================
+ Hits        22219    22397     +178     
+ Misses       3614     3486     -128     

Files	Coverage Δ
internal_macro/src/node_macro/src/lib.rs	96.55% <ø> (ø)
src/ast/node/control.rs	92.47% <ø> (ø)
src/ast/node/function.rs	89.34% <100.00%> (ø)
src/ast/node/global.rs	94.84% <100.00%> (ø)
src/ast/node/implement.rs	90.90% <ø> (ø)
src/ast/node/macro_nodes.rs	81.98% <100.00%> (ø)
src/ast/node/operator.rs	77.32% <ø> (ø)
src/ast/node/primary.rs	86.69% <ø> (ø)
src/ast/node/program.rs	90.48% <100.00%> (ø)
src/ast/node/ret.rs	89.74% <100.00%> (ø)
... and 22 more

... and 6 files with indirect coverage changes

[github-actions]

Benchmark for 4215fcf

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Test	Base	PR	%
allocation bench/malloc benchmark small objects	32.8±7.84ns	35.1±18.35ns	+7.01%
allocation bench/singlethread gc alloc benchmark small objects	11.0±0.15ns	11.1±0.25ns	+0.91%
multithreads(4) gc benchmark--65535 small objects(per thread)	1536.4±83.18µs	1597.5±313.26µs	+3.98%
plimmixgc/multi-thread gc stress benchmark small objects	854.3±20.89ms	824.9±9.95ms	-3.44%
plimmixgc/singlethread gc stress benchmark small objects	516.2±8.20ms	519.6±8.33ms	+0.66%
singlethread gc benchmark--65535 small objects	754.2±10.46µs	743.3±31.25µs	-1.45%

[github-actions]

Benchmark for cdc3ed3

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Test	Base	PR	%
allocation bench/malloc benchmark small objects	34.1±11.76ns	35.4±13.08ns	+3.81%
allocation bench/singlethread gc alloc benchmark small objects	11.3±2.08ns	18.8±2.49ns	+66.37%
multithreads(4) gc benchmark--65535 small objects(per thread)	1560.9±92.02µs	1772.3±434.68µs	+13.54%
plimmixgc/multi-thread gc stress benchmark small objects	862.6±5.03ms	865.3±5.02ms	+0.31%
plimmixgc/singlethread gc stress benchmark small objects	517.5±9.37ms	520.2±8.23ms	+0.52%
singlethread gc benchmark--65535 small objects	760.0±6.33µs	743.0±8.26µs	-2.24%

[github-actions]

Benchmark for ba19d44

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Test	Base	PR	%
allocation bench/malloc benchmark small objects	33.6±10.09ns	34.4±14.20ns	+2.38%
allocation bench/singlethread gc alloc benchmark small objects	11.0±0.29ns	12.0±2.14ns	+9.09%
multithreads(4) gc benchmark--65535 small objects(per thread)	1702.8±323.72µs	1723.6±375.79µs	+1.22%
plimmixgc/multi-thread gc stress benchmark small objects	827.8±22.89ms	850.2±6.12ms	+2.71%
plimmixgc/singlethread gc stress benchmark small objects	544.9±6.80ms	551.6±111.97ms	+1.23%
singlethread gc benchmark--65535 small objects	743.4±9.04µs	736.0±10.60µs	-1.00%

[github-actions]

Benchmark for 05208e2

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Test	Base	PR	%
allocation bench/malloc benchmark small objects	34.0±10.90ns	35.0±9.56ns	+2.94%
allocation bench/singlethread gc alloc benchmark small objects	11.1±0.35ns	11.0±0.31ns	-0.90%
multithreads(4) gc benchmark--65535 small objects(per thread)	1943.0±90.67µs	1950.1±243.40µs	+0.37%
plimmixgc/multi-thread gc stress benchmark small objects	879.9±18.97ms	839.8±9.93ms	-4.56%
plimmixgc/singlethread gc stress benchmark small objects	525.7±17.50ms	530.2±9.56ms	+0.86%
singlethread gc benchmark--65535 small objects	820.1±42.36µs	887.0±56.29µs	+8.16%