feat(stdlibs): add package strconv

[thehowl]

BLOCKED: awaiting merge on #1426, which fixes the underlying bugs causing tests to fail.

This PR adds the full strconv package, implemented as pure Gno code. It removes the native functions Itoa (and others), and adds support for new functions such as FormatFloat.

TODO:

• Remove gno-specific changes which try to circumvent the bug in shift operator where first operand is an untyped bigint always results in a bigint #1462
• Remove package injections from the store

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b2046c5) 56.11% compared to head (3e2bb80) 47.32%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1464      +/-   ##
==========================================
- Coverage   56.11%   47.32%   -8.80%     
==========================================
  Files         431      372      -59     
  Lines       66056    61094    -4962     
==========================================
- Hits        37070    28910    -8160     
- Misses      26086    29804    +3718     
+ Partials     2900     2380     -520     

Flag	Coverage Δ
go-1.21.x	∅ <ø> (∅)
misc	∅ <ø> (∅)
misc-_test.genstd	∅ <ø> (∅)

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[thehowl]

So, tests are currently failing. A bunch of tests I've fixed after realising that the underlying problem is with how we do comparisons when we have a bitshift with an untyped integer on the lhs: #1462 (comment)

I suspect there may be more bugs involved.

In any case, I attempted to make a separate branch from this which merged in the changes from #1426. Turns out, that the tests are completely passing with that code applied to Gno.

So, I'll be continuing work on this once #1426 is merged. For the meantime, I'll update the OP to mark what remaining work is to be done to complete this PR so I can easily pick it up later.

[ltzmaxwell]

In any case, I attempted to make a separate branch from this which merged in the changes from #1426. Turns out, that the tests are completely passing with that code applied to Gno.

I did this as an experiment, it passes all the test after making a small adjustment on your code, atof_test/errEqual(). https://github.com/ltzmaxwell/gno/blob/4e6a40db2922bcd5ea8c100ad028e1dbb08cd2a7/gnovm/stdlibs/strconv/atof_test.gno#L523

go test tests/*.go -run "TestPackages/(strconv)" -v -p 1 -timeout=30m
=== RUN   TestPackages
=== RUN   TestPackages/strconv
DEBUG DISABLED (FOR TEST DEPENDENCIES INIT)
=== RUN   TestPackages/strconv/TestParseBool
=== RUN   TestPackages/strconv/TestFormatBool
=== RUN   TestPackages/strconv/TestAppendBool
=== RUN   TestPackages/strconv/TestParseFloatPrefix
=== RUN   TestPackages/strconv/TestAtof
=== RUN   TestPackages/strconv/TestAtofSlow
=== RUN   TestPackages/strconv/TestAtofRandom
    machine.go:448: tested 100 random numbers
=== RUN   TestPackages/strconv/TestRoundTrip
=== RUN   TestPackages/strconv/TestRoundTrip32
    machine.go:448: tested 21393 float32's
=== RUN   TestPackages/strconv/TestParseFloatIncorrectBitSize
=== RUN   TestPackages/strconv/TestParseUint32
=== RUN   TestPackages/strconv/TestParseUint64
=== RUN   TestPackages/strconv/TestParseUint64Base
=== RUN   TestPackages/strconv/TestParseInt32
=== RUN   TestPackages/strconv/TestParseInt64
=== RUN   TestPackages/strconv/TestParseInt64Base
=== RUN   TestPackages/strconv/TestParseUint
=== RUN   TestPackages/strconv/TestParseInt
=== RUN   TestPackages/strconv/TestAtoi
=== RUN   TestPackages/strconv/TestParseIntBitSize
=== RUN   TestPackages/strconv/TestParseUintBitSize
=== RUN   TestPackages/strconv/TestParseIntBase
=== RUN   TestPackages/strconv/TestParseUintBase
=== RUN   TestPackages/strconv/TestNumError
=== RUN   TestPackages/strconv/TestNumErrorUnwrap
=== RUN   TestPackages/strconv/TestDecimalShift
=== RUN   TestPackages/strconv/TestDecimalRound
=== RUN   TestPackages/strconv/TestDecimalRoundedInteger
=== RUN   TestPackages/strconv/TestFtoa
=== RUN   TestPackages/strconv/TestFtoaPowersOfTwo
=== RUN   TestPackages/strconv/TestFtoaRandom
    machine.go:448: testing 100 random numbers with fast and slow FormatFloat
=== RUN   TestPackages/strconv/TestFormatFloatInvalidBitSize
=== RUN   TestPackages/strconv/TestMulByLog2Log10
=== RUN   TestPackages/strconv/TestMulByLog10Log2
=== RUN   TestPackages/strconv/TestItoa
=== RUN   TestPackages/strconv/TestUitoa
=== RUN   TestPackages/strconv/TestFormatUintVarlen
=== RUN   TestPackages/strconv/TestIsPrint
=== RUN   TestPackages/strconv/TestIsGraphic
=== RUN   TestPackages/strconv/TestQuote
=== RUN   TestPackages/strconv/TestQuoteToASCII
=== RUN   TestPackages/strconv/TestQuoteToGraphic
=== RUN   TestPackages/strconv/TestQuoteRune
=== RUN   TestPackages/strconv/TestQuoteRuneToASCII
=== RUN   TestPackages/strconv/TestQuoteRuneToGraphic
=== RUN   TestPackages/strconv/TestCanBackquote
=== RUN   TestPackages/strconv/TestUnquote
=== RUN   TestPackages/strconv/TestUnquoteInvalidUTF8
=== RUN   TestPackages/strconv/TestErrorPrefixes
DEBUG ENABLED
=== RUN   TestPackages/strconv/TestFp
--- PASS: TestPackages (232.93s)
    --- PASS: TestPackages/strconv (232.92s)
        --- PASS: TestPackages/strconv/TestParseBool (0.00s)
        --- PASS: TestPackages/strconv/TestFormatBool (0.00s)
        --- PASS: TestPackages/strconv/TestAppendBool (0.00s)
        --- PASS: TestPackages/strconv/TestParseFloatPrefix (4.19s)
        --- PASS: TestPackages/strconv/TestAtof (1.09s)
        --- PASS: TestPackages/strconv/TestAtofSlow (3.16s)
        --- PASS: TestPackages/strconv/TestAtofRandom (0.03s)
        --- PASS: TestPackages/strconv/TestRoundTrip (0.01s)
        --- PASS: TestPackages/strconv/TestRoundTrip32 (3.84s)
        --- PASS: TestPackages/strconv/TestParseFloatIncorrectBitSize (0.00s)
        --- PASS: TestPackages/strconv/TestParseUint32 (0.00s)
        --- PASS: TestPackages/strconv/TestParseUint64 (0.00s)
        --- PASS: TestPackages/strconv/TestParseUint64Base (0.01s)
        --- PASS: TestPackages/strconv/TestParseInt32 (0.00s)
        --- PASS: TestPackages/strconv/TestParseInt64 (0.00s)
        --- PASS: TestPackages/strconv/TestParseInt64Base (0.01s)
        --- PASS: TestPackages/strconv/TestParseUint (0.00s)
        --- PASS: TestPackages/strconv/TestParseInt (0.00s)
        --- PASS: TestPackages/strconv/TestAtoi (0.00s)
        --- PASS: TestPackages/strconv/TestParseIntBitSize (0.00s)
        --- PASS: TestPackages/strconv/TestParseUintBitSize (0.00s)
        --- PASS: TestPackages/strconv/TestParseIntBase (0.00s)
        --- PASS: TestPackages/strconv/TestParseUintBase (0.00s)
        --- PASS: TestPackages/strconv/TestNumError (0.00s)
        --- PASS: TestPackages/strconv/TestNumErrorUnwrap (0.00s)
        --- PASS: TestPackages/strconv/TestDecimalShift (0.00s)
        --- PASS: TestPackages/strconv/TestDecimalRound (0.00s)
        --- PASS: TestPackages/strconv/TestDecimalRoundedInteger (0.00s)
        --- PASS: TestPackages/strconv/TestFtoa (0.03s)
        --- PASS: TestPackages/strconv/TestFtoaPowersOfTwo (1.77s)
        --- PASS: TestPackages/strconv/TestFtoaRandom (1.54s)
        --- PASS: TestPackages/strconv/TestFormatFloatInvalidBitSize (0.00s)
        --- PASS: TestPackages/strconv/TestMulByLog2Log10 (0.03s)
        --- PASS: TestPackages/strconv/TestMulByLog10Log2 (0.01s)
        --- PASS: TestPackages/strconv/TestItoa (0.00s)
        --- PASS: TestPackages/strconv/TestUitoa (0.00s)
        --- PASS: TestPackages/strconv/TestFormatUintVarlen (0.00s)
        --- PASS: TestPackages/strconv/TestIsPrint (106.06s)
        --- PASS: TestPackages/strconv/TestIsGraphic (109.88s)
        --- PASS: TestPackages/strconv/TestQuote (0.00s)
        --- PASS: TestPackages/strconv/TestQuoteToASCII (0.00s)
        --- PASS: TestPackages/strconv/TestQuoteToGraphic (0.00s)
        --- PASS: TestPackages/strconv/TestQuoteRune (0.00s)
        --- PASS: TestPackages/strconv/TestQuoteRuneToASCII (0.00s)
        --- PASS: TestPackages/strconv/TestQuoteRuneToGraphic (0.00s)
        --- PASS: TestPackages/strconv/TestCanBackquote (0.00s)
        --- PASS: TestPackages/strconv/TestUnquote (0.01s)
        --- PASS: TestPackages/strconv/TestUnquoteInvalidUTF8 (0.00s)
        --- PASS: TestPackages/strconv/TestErrorPrefixes (0.00s)
        --- PASS: TestPackages/strconv/TestFp (0.19s)
PASS
ok  	command-line-arguments	233.372s

[thehowl]

Current state: the issues arising porting this standard library are a result of #1462. These are fixed in #1775, which depends on #1426, which at the time of writing are pending reviews and merge.