Stream: git-wasmtime

Topic: wasmtime / PR #1436 Parse run commands

Wasmtime GitHub notifications bot (Mar 30 2020 at 19:59):

abrown opened PR #1436 from parse-run-commands to master:

This PR adds the ability to parse CLIF run commands like run: %fn0(42, 4.2) == true. It seems like a good first step towards closing out https://github.com/bytecodealliance/cranelift/pull/1231; it also factors out some of the functionality that was implemented separately in https://github.com/bytecodealliance/wasmtime/pull/1223 and incorporates it into cranelift-reader.

My plan is to use this parsing in FunctionRunner to:

• compare the results of running CLIF functions to values other than true (the current hard-coded behavior); this would be useful in testing
• print the results of running a function in FunctionRunner with, e.g., print: %fn(42) (this was the original point of https://github.com/bytecodealliance/cranelift/pull/1231)
• allow running CLIF functions with varied signatures; currently FunctionRunner can only run functions of () -> b*. To do this, I think I need to do something along the lines of WasmTy or Val in wasmtime-api. @alexcrichton, what do you think? ValueData is a bit like Val and I will need to cast the function compiled by FunctionRunner to types known at runtime.

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Wasmtime GitHub notifications bot (Mar 30 2020 at 19:59):

abrown requested nbp for a review on PR #1436.

Wasmtime GitHub notifications bot (Mar 30 2020 at 20:00):

abrown requested alexcrichton and nbp for a review on PR #1436.

Wasmtime GitHub notifications bot (Mar 30 2020 at 20:39):

abrown updated PR #1436 from parse-run-commands to master:

This PR adds the ability to parse CLIF run commands like run: %fn0(42, 4.2) == true. It seems like a good first step towards closing out https://github.com/bytecodealliance/cranelift/pull/1231; it also factors out some of the functionality that was implemented separately in https://github.com/bytecodealliance/wasmtime/pull/1223 and incorporates it into cranelift-reader.

My plan is to use this parsing in FunctionRunner to:

• compare the results of running CLIF functions to values other than true (the current hard-coded behavior); this would be useful in testing
• print the results of running a function in FunctionRunner with, e.g., print: %fn(42) (this was the original point of https://github.com/bytecodealliance/cranelift/pull/1231)
• allow running CLIF functions with varied signatures; currently FunctionRunner can only run functions of () -> b*. To do this, I think I need to do something along the lines of WasmTy or Val in wasmtime-api. @alexcrichton, what do you think? ValueData is a bit like Val and I will need to cast the function compiled by FunctionRunner to types known at runtime.

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Wasmtime GitHub notifications bot (Mar 30 2020 at 21:48):

abrown updated PR #1436 from parse-run-commands to master:

This PR adds the ability to parse CLIF run commands like run: %fn0(42, 4.2) == true. It seems like a good first step towards closing out https://github.com/bytecodealliance/cranelift/pull/1231; it also factors out some of the functionality that was implemented separately in https://github.com/bytecodealliance/wasmtime/pull/1223 and incorporates it into cranelift-reader.

My plan is to use this parsing in FunctionRunner to:

• compare the results of running CLIF functions to values other than true (the current hard-coded behavior); this would be useful in testing
• print the results of running a function in FunctionRunner with, e.g., print: %fn(42) (this was the original point of https://github.com/bytecodealliance/cranelift/pull/1231)
• allow running CLIF functions with varied signatures; currently FunctionRunner can only run functions of () -> b*. To do this, I think I need to do something along the lines of WasmTy or Val in wasmtime-api. @alexcrichton, what do you think? ValueData is a bit like Val and I will need to cast the function compiled by FunctionRunner to types known at runtime.

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Wasmtime GitHub notifications bot (Mar 31 2020 at 18:09):

abrown requested alexcrichton, nbp and bnjbvr for a review on PR #1436.

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr created PR Review Comment:

The 8 should be a 16 here, since we want to parse as hexadecimal, right? (if i'm correct, can you add a test case for this, please?)

Also, why do we parse it as a u16? Would this allow numbers above the imm8 range?

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr created PR Review Comment:

nit: can you do let value = if text.starts_with... {} else {}; instead? (avoids the mut qualifier on value)

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr created PR Review Comment:

Isn't this possibly inferred by the compiler for Vec<T> when T implements Display? Or can we use {:?} for the Vec<T> type and it'll do the right thing here?

Wasmtime GitHub notifications bot (Apr 03 2020 at 17:22):

bnjbvr created PR Review Comment:

nit: I think you can remove both the Ok and ? here, right?

Wasmtime GitHub notifications bot (Apr 03 2020 at 18:49):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 18:49):

abrown created PR Review Comment:

Yes, good point!

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:08):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:08):

abrown created PR Review Comment:

I think this was introduced in 2300eec8 so I went ahead and took the same let value = ... approach for i16 and i32.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:08):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:08):

abrown created PR Review Comment:

Yeah, and similarly removed this in i16 and i32.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:14):

abrown updated PR #1436 from parse-run-commands to master:

This PR adds the ability to parse CLIF run commands like run: %fn0(42, 4.2) == true. It seems like a good first step towards closing out https://github.com/bytecodealliance/cranelift/pull/1231; it also factors out some of the functionality that was implemented separately in https://github.com/bytecodealliance/wasmtime/pull/1223 and incorporates it into cranelift-reader.

My plan is to use this parsing in FunctionRunner to:

• compare the results of running CLIF functions to values other than true (the current hard-coded behavior); this would be useful in testing
• print the results of running a function in FunctionRunner with, e.g., print: %fn(42) (this was the original point of https://github.com/bytecodealliance/cranelift/pull/1231)
• allow running CLIF functions with varied signatures; currently FunctionRunner can only run functions of () -> b*. To do this, I think I need to do something along the lines of WasmTy or Val in wasmtime-api. @alexcrichton, what do you think? ValueData is a bit like Val and I will need to cast the function compiled by FunctionRunner to types known at runtime.

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Wasmtime GitHub notifications bot (Apr 03 2020 at 19:14):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:14):

abrown created PR Review Comment:

This is fixed: u8::from_str_radix(&text[2..], 16)

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:28):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 19:28):

abrown created PR Review Comment:

It complained that I hadn't implemented Debug for T, IIRC. I think this boils down to: how do I use the Display of T as a Debug so that I can use the Debug of Vec<T>? Preferably without adding Debug to the whole type hierarchy of T... I don't yet see a good Rust-y way of doing this.

Wasmtime GitHub notifications bot (Apr 03 2020 at 20:24):

abrown submitted PR Review.

Wasmtime GitHub notifications bot (Apr 03 2020 at 20:24):

abrown created PR Review Comment:

@alexcrichton suggested I use impl Display instead of DataValue, which is a good solution to avoid this function; but I remembered that I made this because sometimes I need the data values enclosed in parentheses and sometimes in brackets. E.g. %fn() = [1, 2, 3] vs %fn(1, 2, 3) == 42. I'm going to leave this function in for that reason.

Wasmtime GitHub notifications bot (Apr 03 2020 at 20:25):

abrown merged PR #1436.

Last updated: Dec 06 2025 at 06:05 UTC