Make sure variadic parameter does not have default value

[mchekin]

Q	A
Documentation	no
Bugfix	yes
BC Break	no
New Feature	no
RFC	no
QA	yes

Description

Related to issue #35

[mchekin]

@Ocramius
Please review again.

[Ocramius]

LGTM, thanks @mchekin!

[lisachenko]

Almost one year after )
This PR has introduced a BC break in minor version, related to the goaop/framework#476

[Ocramius]

@lisachenko test cases please :)

[sakhunzai]

@lisachenko is right and I am unable to use the goaop framework due to this issue. Please fix it, thanks. The issues seems simple

namespace Laminas\Code\Generator;
....
class ParameterGenerator extends AbstractGenerator
{ 
 /**
     * @param bool $variadic
     * @return ParameterGenerator
     */
    public function setVariadic($variadic)
    {
        if (isset($this->defaultValue)) {
            throw new Exception\InvalidArgumentException('Variadic parameter cannot have a default value');
        }

        $this->variadic = (bool) $variadic;

        return $this;
    }

The function should not throw exception, when $variadic is false. e. g

 public function setVariadic($variadic)
    {

       $this->variadic = (bool) $variadic;
        if ($this->variadic && isset($this->defaultValue)) {
            throw new Exception\InvalidArgumentException('Variadic parameter cannot have a default value');
        }

        return $this;
    }

[Ocramius]

@sakhunzai send a patch with an attached test, please.

[sakhunzai]

@Ocramius would you please review the PR #173 and merge, this is blocking my work, thanks