package core

import (
	"fmt"

	"git.akyoto.dev/cli/q/src/build/ast"
)

// CompileIf compiles a branch instruction.
func (f *Function) CompileIf(branch *ast.If) error {
	f.count.branch++
	success := fmt.Sprintf("%s_if_%d_true", f.Name, f.count.branch)
	fail := fmt.Sprintf("%s_if_%d_false", f.Name, f.count.branch)
	err := f.CompileCondition(branch.Condition, success, fail)

	if err != nil {
		return err
	}

	f.AddLabel(success)
	f.pushScope(branch.Body)
	err = f.CompileAST(branch.Body)
	f.popScope()
	f.AddLabel(fail)
	return err
}