76 lines
1.2 KiB
Go
76 lines
1.2 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"time"
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"monkey/compiler"
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"monkey/evaluator"
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"monkey/lexer"
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"monkey/object"
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"monkey/parser"
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"monkey/vm"
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)
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var engine = flag.String("engine", "vm", "use 'vm' or 'eval'")
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var input = `
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let fibonacci = fn(x) {
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if (x == 0) {
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0
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} else {
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if (x == 1) {
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return 1;
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} else {
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fibonacci(x - 1) + fibonacci(x - 2);
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}
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}
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};
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fibonacci(35);
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`
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func main() {
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flag.Parse()
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var duration time.Duration
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var result object.Object
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l := lexer.New(input)
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p := parser.New(l)
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program := p.ParseProgram()
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if *engine == "vm" {
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comp := compiler.New()
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err := comp.Compile(program)
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if err != nil {
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fmt.Printf("compiler error: %s", err)
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return
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}
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machine := vm.New(comp.Bytecode())
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start := time.Now()
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err = machine.Run()
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if err != nil {
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fmt.Printf("vm error: %s", err)
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return
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}
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duration = time.Since(start)
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result = machine.LastPoppedStackElem()
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} else {
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env := object.NewEnvironment()
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start := time.Now()
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result = evaluator.Eval(program, env)
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duration = time.Since(start)
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}
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fmt.Printf(
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"engine=%s, result=%s, duration=%s\n",
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*engine,
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result.Inspect(),
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duration)
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}
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