🌶️
chili
Currently in development, Unstable (API may change in future)
Simple expression evaluation engine.
Expression is one liner that evalutes into single value
Features
- Number accuracy (using github.com/shopspring/decimal pkg)
- Extensible
- Simple grammer
Installation
$ go get github.com/5anthosh/chili
Examples
package main
import (
"fmt"
"github.com/5anthosh/chili"
)
func main() {
expression := "val > 50 ? 'Greater than or 50' : 'Smaller than 50'"
values := map[string]interface{}{
"val": 60,
}
result, err := chili.Eval(expression, values)
if err != nil {
panic(err)
}
println(fmt.Sprintf("%v result", result))
}
package main
import (
"fmt"
"github.com/5anthosh/chili/environment"
"github.com/5anthosh/chili/evaluator"
"github.com/5anthosh/chili/parser"
"github.com/shopspring/decimal"
)
func main() {
source := "PI*R^2 + abs(45.345)"
env := environment.New()
env.SetDefaultFunctions()
env.SetDefaultVariables()
env.SetIntVariable("R", 2)
chiliParser := parser.New(source)
expression, err := chiliParser.Parse()
if err != nil {
panic(err)
}
chiliEvaluator := evaluator.New(env)
value, err := chiliEvaluator.Run(expression)
if err != nil {
panic(err)
}
println(fmt.Sprintf("%v result", value))
}
