example_test.go

// Copyright (C) 2018 Ramesh Vyaghrapuri. All rights reserved.
// Use of this source code is governed by a MIT-style license
// that can be found in the LICENSE file.

package funnel

import (
	"fmt"
	"github.com/funnelorg/funnel/builtin"
	"github.com/funnelorg/funnel/run"
)

func ExampleEval_customScope() {
	m := []map[interface{}]interface{}{{
		"x": builtin.Number{5.0},
		"square": run.ArgsResolver(func(args []interface{}) interface{} {
			n := args[0].(builtin.Number)
			return n.F * n.F
		}),
	}}
	myScope := run.NewScope(m, builtin.Scope)

	x := Eval(myScope, "myfile.go", "square(x + 2)")
	fmt.Println("square:", x)

	// Output:
	// square: 49
}

func ExampleEval_defaultScope() {
	fmt.Println(Eval(nil, "myfile.go", "5 + 2"))

	// Output:
	// {7}
}

func ExampleEval_functions() {
	code := `
{
   fn = fun(x, y, x + y),
   x = notused,
   y = notused,
   z = fn(5, 10)
}.z`

	fmt.Println(Eval(nil, "myfile.go", code))

	// Output:
	// {15}
}