expr
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expr-lang
Expression language and expression evaluation for Go
https://github.com/antonmedv/expr/pull/173#issuecomment-985388643 fix for that just change scope for nilsafe variable :) also seems IdentifierNode shouldn't have NilSafe option
code:= `1+1/(4+5)*(1*5)+3.3+3.3+3.3+3.3/3.3*3.3` When I run this code in excel, I get 14.7555. When I run it in expr, I get 14.2. What accounts for the difference? however this works: `1.0+1/(4.0+5)*(1*5.0)+3.3+3.3+3.3+3.3/3.3*3.3`...
I have a usecase where I want to distinguish 0 and nil so I'm trying to pass `*int` to expr. Below is code I tried and it doesn't work as...
``` val := `1 & 1` complie, err := expr.Compile(val) r, err := expr.Run(complie,env) if err!=nil { fmt.Printf("%+v", err) } if v, ok := r.(int); ok { fmt.Printf("%+v", v) }...
We want to be able to sandbox expression evaluation, because some users might submit time, memory, or CPU intensive expression, either accidentally, or as a intentional attack of code that...
Timeout
Is there a way to timeout and kill a running expr.Run/VM.Run process if it is taking too long? This is to terminate/interupt runaway code that was miscoded,etc. I did a...
How exactly should this be implemented: To fetch fields from struct, values from map, get by indexes expr uses reflect package. Envs can implement vm.Fetcher interface, to avoid use reflect:...
In a nutshell, compare between `string` and `type Other string` will cause error like `interface conversion: interface {} is main.Status, not string`. Any elegant way to result this issue? Type...
