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fix: branch stmts #3043

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fix: branch stmts #3043

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petar-dambovaliev
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@petar-dambovaliev petar-dambovaliev commented Oct 29, 2024

Adds validation for break, continue and fallthrough to disallow invalid code.
Moves existing validation from the runtime to the preprocessor.

Closes #2973

@github-actions github-actions bot added the 📦 🤖 gnovm Issues or PRs gnovm related label Oct 29, 2024
@petar-dambovaliev petar-dambovaliev changed the title Bug: fix switch branch stmts fix: switch branch stmts Oct 29, 2024
@Kouteki Kouteki added the in focus Core team is prioritizing this work label Nov 1, 2024
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codecov bot commented Nov 1, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.73%. Comparing base (4f27a57) to head (919f650).

Additional details and impacted files
@@            Coverage Diff             @@
##           master    #3043      +/-   ##
==========================================
- Coverage   63.77%   63.73%   -0.05%     
==========================================
  Files         548      548              
  Lines       78681    78695      +14     
==========================================
- Hits        50180    50157      -23     
- Misses      25117    25148      +31     
- Partials     3384     3390       +6     
Flag Coverage Δ
contribs/gnodev 61.16% <ø> (+0.62%) ⬆️
contribs/gnofaucet 15.77% <ø> (+0.94%) ⬆️
gno.land 73.62% <ø> (ø)
gnovm 67.93% <100.00%> (+<0.01%) ⬆️
misc/genstd 79.72% <ø> (ø)
tm2 62.31% <ø> (-0.16%) ⬇️

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gnovm/pkg/gnolang/preprocess.go Outdated Show resolved Hide resolved
gnovm/pkg/gnolang/preprocess.go Outdated Show resolved Hide resolved

if n.GetAttribute(ATTR_LAST_BLOCK_STMT) != true {
// no more clause after the one executed, this is not allowed
panic("fallthrough statement out of place")
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any test targeting this?

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There are several tests. grep for fallthrough statement out of place

ATTR_LOOP_DEFINES GnoAttribute = "ATTR_LOOP_DEFINES" // []Name defined within loops.
ATTR_LOOP_USES GnoAttribute = "ATTR_LOOP_USES" // []Name loop defines actually used.
ATTR_SHIFT_RHS GnoAttribute = "ATTR_SHIFT_RHS"
ATTR_LAST_BLOCK_STMT GnoAttribute = "ATTR_LAST_BLOCK_STMT"
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is there a better name?

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I am open to suggestions

@Kouteki Kouteki added this to the 🚀 Mainnet launch milestone Nov 10, 2024
@petar-dambovaliev petar-dambovaliev changed the title fix: switch branch stmts fix: branch stmts Nov 10, 2024
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looks good to me

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