package main

import (
	"internal/trace"
)

var _ generator = &goroutineGenerator{}

type goroutineGenerator struct {
	globalRangeGenerator
	globalMetricGenerator
	stackSampleGenerator[trace.GoID]
	logEventGenerator[trace.GoID]

	gStates map[trace.GoID]*gState[trace.GoID]
	focus   trace.GoID
	filter  map[trace.GoID]struct{}
}

	stackSampleGenerator[trace.ThreadID]
	logEventGenerator[trace.ThreadID]

	gStates map[trace.GoID]*gState[trace.ThreadID]
	threads map[trace.ThreadID]struct{}
}

func newThreadGenerator() *threadGenerator {
	tg := new(threadGenerator)
	rg := func(ev *trace.Event) trace.ThreadID {
		return ev.Thread()
	}
	tg.stackSampleGenerator.getResource = rg
	tg.logEventGenerator.getResource = rg

)

var _ generator = &procGenerator{}

type procGenerator struct {
	globalRangeGenerator
	globalMetricGenerator
	procRangeGenerator
	stackSampleGenerator[trace.ProcID]
	logEventGenerator[trace.ProcID]

	gStates   map[trace.GoID]*gState[trace.ProcID]
	inSyscall map[trace.ProcID]*gState[trace.ProcID]
	maxProc   trace.ProcID
}

func newProcGenerator() *procGenerator {
	pg := new(procGenerator)

	startStack trace.Stack
	endStack   trace.Stack
	arg        any
}

type logEventGenerator[R resource] struct {
	// getResource is a function to extract a resource ID from a Log event.
	getResource func(*trace.Event) R
}

// Log implements a log event handler. It expects ev to be one such event.
func (g *logEventGenerator[R]) Log(ctx *traceContext, ev *trace.Event) {
	id := g.getResource(ev)
	if id == R(noResource) {