Method emitFunction

compiler/compiler.go:176–190

emitFunction adds builtin.Function.Func to the program.functions and emits call opcode.

(fn *builtin.Function, argsLen int)

// emitFunction adds builtin.Function.Func to the program.functions and emits call opcode.
func (c *compiler) emitFunction(fn *builtin.Function, argsLen int) {
	switch argsLen {
	case 0:
		c.emit(OpCall0, c.addFunction(fn.Name, fn.Func))
	case 1:
		c.emit(OpCall1, c.addFunction(fn.Name, fn.Func))
	case 2:
		c.emit(OpCall2, c.addFunction(fn.Name, fn.Func))
	case 3:
		c.emit(OpCall3, c.addFunction(fn.Name, fn.Func))
	default:
		c.emit(OpLoadFunc, c.addFunction(fn.Name, fn.Func))
		c.emit(OpCallN, argsLen)
	}
}

// addFunction adds builtin.Function.Func to the program.functions and returns its index.
func (c *compiler) addFunction(name string, fn Function) int {