stmt/class: support static calls

fixtures/0005-inheritance.php

@@ -7,6 +7,10 @@ class Base {
 		$this->mX = $x;
 	}
 	
+	public function Val() {
+		return 3;
+	}
+	
 	static function TheStatic() {}
 }
 
@@ -19,4 +23,14 @@ class Child extends Base {
 		$this->mY = 0;	
 	}
 	
+	public function Val() {
+		return 4;
+	}
+	
+	public function Combine() {
+		return $this->Val() + parent::Val();
+	}
+	
 }
+
+echo (new Child(0))->Combine();

node.go

@@ -459,6 +459,24 @@ func convert(n_ node.Node) (string, error) {
 
 		return funcName + callParams, nil // expr only, no semicolon/newline
 
+	case *expr.StaticCall:
+		className, err := resolveName(n.Class)
+		if err != nil {
+			return "", parseErr{n, err}
+		}
+
+		funcName, err := convert(n.Call)
+		if err != nil {
+			return "", parseErr{n, err}
+		}
+
+		callParams, err := convertFuncCallArgsCommon(n.ArgumentList)
+		if err != nil {
+			return "", parseErr{n, err}
+		}
+
+		return className + "." + funcName + callParams, nil // expr only, no semicolon/newline
+
 	case *expr.New:
 		// new foo(xx)
 		// Transparently convert to calling constructor function.