Examples of org.erlide.engine.model.root.IErlElement

org.erlide.engine.model.root.IErlElement
Common protocol for all elements provided by the Erlang model. Erlang model elements are exposed to clients as handles to the actual underlying element. The Erlang model may hand out any number of handles for each element. Handles that refer to the same element are guaranteed to be equal, but not necessarily identical.
Methods annotated as "handle-only" do not require underlying elements to exist. Methods that require underlying elements to exist throw a ErlModelException when an underlying element is missing. ErlModelException.isDoesNotExist can be used to recognize this common special case.
@noimplement This interface is not intended to be implemented by clients. @author jakob

        final IFile file = srcFolder.getFile("xx.erl");
        final IErlElementLocator model = ErlangEngine.getInstance().getModel();
        final IErlModule otpFile = model.findModuleFromProject(project, "file.erl", null,
                IErlElementLocator.Scope.PROJECT_ONLY);
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        assertEquals(file, module.getCorrespondingResource());
        assertNull(otpFile.getCorrespondingResource());
        assertNull(element.getCorrespondingResource());
    }

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    // String getName();
    @Test
    public void getName() throws Exception {
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        final IErlElement element2 = module.getElementAtLine(0);
        assertEquals("xx.erl", module.getName());
        assertEquals("testproject1", project.getName());
        assertEquals("f", element.getName());
        assertEquals("module", element2.getName());
    }

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    // Kind getKind();
    @Test
    public void getKind() throws Exception {
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        final IErlElement element2 = module.getElementAtLine(0);
        assertEquals(ErlElementKind.MODULE, module.getKind());
        assertEquals(ErlElementKind.PROJECT, project.getKind());
        assertEquals(ErlElementKind.FUNCTION, element.getKind());
        assertEquals(ErlElementKind.ATTRIBUTE, element2.getKind());
        assertEquals(ErlElementKind.MODEL, ErlangEngine.getInstance().getModel()
                .getKind());
    }

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    // IErlElement getParent();
    @Test
    public void getParent() throws Exception {
        project.open(null);
        final IErlElement srcFolder = project.getChildNamed("src");
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        assertEquals(project, srcFolder.getParent());
        assertEquals(srcFolder, module.getParent());
        assertEquals(module, element.getParent());
    }

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        final IFile file = srcFolder.getFile("xx.erl");
        final IErlElementLocator model = ErlangEngine.getInstance().getModel();
        final IErlModule otpFile = model.findModuleFromProject(project, "file.erl", null,
                IErlElementLocator.Scope.PROJECT_ONLY);
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        assertEquals(file, module.getResource());
        assertNull(otpFile.getResource());
        assertEquals(module.getResource(), element.getResource());
    }

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    public void getFilePath() throws Exception {
        final String modulePath = module.getResource().getLocation().toString();
        // final String projectPath = project.getResource().getLocation()
        // .toString();
        // final String srcFolderPath = projectPath + "/src";
        final IErlElement parent = module.getParent();
        module.open(null);
        final IErlElement element = module.getElementAtLine(3);
        assertEquals(modulePath, module.getFilePath());
        assertNull(project.getFilePath());
        assertNull(parent.getFilePath());
        assertNull(element.getFilePath());
    }

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    // IErlElement getChildNamed(String s);
    @Test
    public void getChildNamed() throws Exception {
        project.open(null);
        final String src = "src";
        final IErlElement childNamed = project.getChildNamed(src);
        final IErlElement childNamed2 = project.getChildNamed("SRC");
        final IErlElement childNamed3 = project.getChildNamed("noway");
        module.open(null);
        final IErlElement childNamed4 = module.getChildNamed("module");
        final IErlElement childNamed5 = module.getChildNamed("f");
        assertEquals(src, childNamed.getName());
        assertNull(childNamed2);
        assertNull(childNamed3);
        assertNotNull(childNamed4);
        assertTrue(childNamed5.getKind() == ErlElementKind.FUNCTION);
    }

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    // IErlElement getChildWithResource(IResource rsrc);
    @Test
    public void getChildWithResource() throws Exception {
        final IProject workspaceProject = project.getWorkspaceProject();
        final IErlModel model = ErlangEngine.getInstance().getModel();
        final IErlElement childWithResource = model
                .getChildWithResource(workspaceProject);
        final IResource resource = module.getResource();
        final IErlElement childWithResource2 = model.getChildWithResource(resource);
        final IErlFolder folder = (IErlFolder) project.getChildNamed("src");
        final IErlElement childWithResource3 = folder.getChildWithResource(resource);
        assertEquals(project, childWithResource);
        assertNull(childWithResource2);
        assertEquals(module, childWithResource3);
    }

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        final int childCount = module.getChildCount();
        final String aname = "test_a";
        final IErlAttribute attribute = new ErlAttribute(module, aname, null, "test");
        module.addChild(attribute);
        final int childCount2 = module.getChildCount();
        final IErlElement childNamed = module.getChildNamed(aname);
        assertEquals(childCount + 1, childCount2);
        assertEquals(attribute, childNamed);
    }

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        final String aname = "test_a";
        final IErlAttribute attribute = new ErlAttribute(module, aname, null, "test");
        module.setChildren(Lists.newArrayList(attribute));
        final int childCount = module.getChildCount();
        final List<IErlElement> children2 = module.getChildren();
        final IErlElement element = children2.iterator().next();
        assertEquals(1, childCount);
        assertFalse(children2.equals(children));
        assertEquals(attribute, element);
    }

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