diff options
Diffstat (limited to 'Examples/go/extend')
| -rw-r--r-- | Examples/go/extend/Makefile | 12 | ||||
| -rw-r--r-- | Examples/go/extend/ceo.go | 37 | ||||
| -rw-r--r-- | Examples/go/extend/example.h | 2 | ||||
| -rw-r--r-- | Examples/go/extend/index.html | 13 | ||||
| -rw-r--r-- | Examples/go/extend/runme.go | 20 |
5 files changed, 61 insertions, 23 deletions
diff --git a/Examples/go/extend/Makefile b/Examples/go/extend/Makefile index 290694210..a9f2d8d7d 100644 --- a/Examples/go/extend/Makefile +++ b/Examples/go/extend/Makefile @@ -1,6 +1,7 @@ TOP = ../.. SWIG = $(TOP)/../preinst-swig CXXSRCS = extend.cxx +GOSRCS = ceo.go TARGET = example INTERFACE = example.i SWIGOPT = @@ -9,8 +10,15 @@ check: build $(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_run build: - $(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \ - SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_cpp + if [ -n '$(SRCDIR)' ]; then \ + cp $(GOSRCS:%=$(SRCDIR)/%) .; \ + fi + @# Note: example.go gets generated by SWIG + $(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' GOSRCS='example.go $(GOSRCS)' \ + SWIG='$(SWIG)' SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_cpp clean: + if [ -n '$(SRCDIR)' ]; then \ + rm $(GOSRCS) || true; \ + fi $(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' INTERFACE='$(INTERFACE)' go_clean diff --git a/Examples/go/extend/ceo.go b/Examples/go/extend/ceo.go new file mode 100644 index 000000000..8f00c92f2 --- /dev/null +++ b/Examples/go/extend/ceo.go @@ -0,0 +1,37 @@ +package example + +type CEO interface { + Manager + deleteManager() + IsCEO() +} + +type ceo struct { + Manager +} + +func (p *ceo) deleteManager() { + DeleteDirectorManager(p.Manager) +} + +func (p *ceo) IsCEO() {} + +type overwrittenMethodsOnManager struct { + p Manager +} + +func NewCEO(name string) CEO { + om := &overwrittenMethodsOnManager{} + p := NewDirectorManager(om, name) + om.p = p + + return &ceo{Manager: p} +} + +func DeleteCEO(p CEO) { + p.deleteManager() +} + +func (p *ceo) GetPosition() string { + return "CEO" +} diff --git a/Examples/go/extend/example.h b/Examples/go/extend/example.h index ca1aed28f..0c3b721bd 100644 --- a/Examples/go/extend/example.h +++ b/Examples/go/extend/example.h @@ -44,7 +44,7 @@ public: const Employee *get_item(int i) { return list[i]; } - ~EmployeeList() { + ~EmployeeList() { std::vector<Employee*>::iterator i; std::cout << "~EmployeeList, deleting " << list.size() << " employees." << std::endl; for (i=list.begin(); i!=list.end(); i++) { diff --git a/Examples/go/extend/index.html b/Examples/go/extend/index.html index 471fa9cdc..31788b2aa 100644 --- a/Examples/go/extend/index.html +++ b/Examples/go/extend/index.html @@ -12,13 +12,16 @@ <H2>Extending a simple C++ class in Go</H2> <p> -This example illustrates the extending of a C++ class with cross -language polymorphism. - +This example illustrates how to inherit from a C++ class in Go. +See the <a href="../../../Doc/Manual/Go.html#Go_director_classes">Go Director +Classes</a> documentation subsection for an in-depth explanation how to use the +director feature. <p> + <ul> -<li><a href="example.h">example.h</a>. Header file containing some enums. -<li><a href="example.i">example.i</a>. Interface file. +<li><a href="ceo.go">ceo.go</a>. Go source with the definition of the CEO class. +<li><a href="example.h">example.h</a>. Header with the definition of the Employee, Manager and EmployeeList classes. +<li><a href="example.i">example.i</a>. SWIG interface file. <li><a href="runme.go">runme.go</a>. Sample Go program. </ul> diff --git a/Examples/go/extend/runme.go b/Examples/go/extend/runme.go index 770e27802..a56968937 100644 --- a/Examples/go/extend/runme.go +++ b/Examples/go/extend/runme.go @@ -7,19 +7,12 @@ import ( "fmt" ) -type CEO struct{} - -func (p *CEO) GetPosition() string { - return "CEO" -} - func main() { // Create an instance of CEO, a class derived from the Go // proxy of the underlying C++ class. The calls to getName() // and getPosition() are standard, the call to getTitle() uses // the director wrappers to call CEO.getPosition(). - - e := NewDirectorManager(new(CEO), "Alice") + e := NewCEO("Alice") fmt.Println(e.GetName(), " is a ", e.GetPosition()) fmt.Println("Just call her \"", e.GetTitle(), "\"") fmt.Println("----------------------") @@ -27,7 +20,6 @@ func main() { // Create a new EmployeeList instance. This class does not // have a C++ director wrapper, but can be used freely with // other classes that do. - list := NewEmployeeList() // EmployeeList owns its items, so we must surrender ownership @@ -49,15 +41,13 @@ func main() { // CEO, but now Go thinks the object is an instance of class // Employee. So the call passes through the Employee proxy // class and on to the C wrappers and C++ director, eventually - // ending up back at the Java CEO implementation of + // ending up back at the Go CEO implementation of // getPosition(). The call to GetTitle() for item 3 runs the // C++ Employee::getTitle() method, which in turn calls // GetPosition(). This virtual method call passes down - // through the C++ director class to the Java implementation + // through the C++ director class to the Go implementation // in CEO. All this routing takes place transparently. - fmt.Println("(position, title) for items 0-3:") - fmt.Println(" ", list.Get_item(0).GetPosition(), ", \"", list.Get_item(0).GetTitle(), "\"") fmt.Println(" ", list.Get_item(1).GetPosition(), ", \"", list.Get_item(1).GetTitle(), "\"") fmt.Println(" ", list.Get_item(2).GetPosition(), ", \"", list.Get_item(2).GetTitle(), "\"") @@ -66,11 +56,11 @@ func main() { // Time to delete the EmployeeList, which will delete all the // Employee* items it contains. The last item is our CEO, - // which gets destroyed as well. + // which gets destroyed as well and hence there is no need to + // call DeleteCEO. DeleteEmployeeList(list) fmt.Println("----------------------") // All done. - fmt.Println("Go exit") } |