1 files changed, 127 insertions, 0 deletions
diff --git a/plugins/org.eclipse.tcf.debug.ui/src/org/eclipse/tcf/internal/debug/ui/commands/StepCommand.java b/plugins/org.eclipse.tcf.debug.ui/src/org/eclipse/tcf/internal/debug/ui/commands/StepCommand.java
new file mode 100644
index 000000000..824b6ea7b
--- /dev/null
+++ b/plugins/org.eclipse.tcf.debug.ui/src/org/eclipse/tcf/internal/debug/ui/commands/StepCommand.java
@@ -0,0 +1,127 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Wind River Systems - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.tm.internal.tcf.debug.ui.commands;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.eclipse.core.runtime.Status;
+import org.eclipse.debug.core.commands.IDebugCommandHandler;
+import org.eclipse.debug.core.commands.IDebugCommandRequest;
+import org.eclipse.debug.core.commands.IEnabledStateRequest;
+import org.eclipse.tm.internal.tcf.debug.model.TCFContextState;
+import org.eclipse.tm.internal.tcf.debug.ui.model.TCFModel;
+import org.eclipse.tm.internal.tcf.debug.ui.model.TCFNode;
+import org.eclipse.tm.internal.tcf.debug.ui.model.TCFNodeExecContext;
+import org.eclipse.tm.internal.tcf.debug.ui.model.TCFRunnable;
+import org.eclipse.tm.tcf.services.IRunControl;
+import org.eclipse.tm.tcf.util.TCFDataCache;
+
+abstract class StepCommand implements IDebugCommandHandler {
+
+    private static final int MAX_ACTION_CNT = 4;
+
+    protected final TCFModel model;
+
+    public StepCommand(TCFModel model) {
+        this.model = model;
+    }
+
+    protected abstract boolean canExecute(IRunControl.RunControlContext ctx);
+
+    protected abstract void execute(IDebugCommandRequest monitor,
+            IRunControl.RunControlContext ctx, boolean src_step, Runnable done);
+
+    private boolean getContextSet(boolean exec, Object[] elements, Set<IRunControl.RunControlContext> set, Runnable done) {
+        for (int i = 0; i < elements.length; i++) {
+            TCFNode node = null;
+            if (elements[i] instanceof TCFNode) node = (TCFNode)elements[i];
+            else node = model.getRootNode();
+            while (node != null && !node.isDisposed()) {
+                IRunControl.RunControlContext ctx = null;
+                if (node instanceof TCFNodeExecContext) {
+                    TCFDataCache<IRunControl.RunControlContext> cache = ((TCFNodeExecContext)node).getRunContext();
+                    if (!cache.validate(done)) return false;
+                    ctx = cache.getData();
+                }
+                if (ctx == null) {
+                    node = node.getParent();
+                }
+                else {
+                    if (!canExecute(ctx)) break;
+                    int action_cnt = model.getLaunch().getContextActionsCount(ctx.getID());
+                    if (exec && action_cnt >= MAX_ACTION_CNT) break;
+                    if (action_cnt > 0) {
+                        set.add(ctx);
+                    }
+                    else {
+                        if (ctx.isContainer()) {
+                            TCFNodeExecContext.ChildrenStateInfo s = new TCFNodeExecContext.ChildrenStateInfo();
+                            if (!((TCFNodeExecContext)node).hasSuspendedChildren(s, done)) return false;
+                            if (s.suspended || s.not_active) set.add(ctx);
+                        }
+                        if (ctx.hasState()) {
+                            TCFDataCache<TCFContextState> state_cache = ((TCFNodeExecContext)node).getState();
+                            if (!state_cache.validate(done)) return false;
+                            TCFContextState state_data = state_cache.getData();
+                            if (state_data != null && state_data.is_suspended) set.add(ctx);
+                        }
+                    }
+                    break;
+                }
+            }
+        }
+        return true;
+    }
+
+    public final void canExecute(final IEnabledStateRequest monitor) {
+        new TCFRunnable(monitor) {
+            public void run() {
+                if (done) return;
+                if (!monitor.isCanceled()) {
+                    Set<IRunControl.RunControlContext> set = new HashSet<IRunControl.RunControlContext>();
+                    if (!getContextSet(false, monitor.getElements(), set, this)) return;
+                    monitor.setEnabled(set.size() > 0);
+                    monitor.setStatus(Status.OK_STATUS);
+                }
+                done();
+            }
+        };
+    }
+
+    public final boolean execute(final IDebugCommandRequest monitor) {
+        new TCFRunnable(monitor) {
+            public void run() {
+                if (done) return;
+                Set<IRunControl.RunControlContext> set = new HashSet<IRunControl.RunControlContext>();
+                if (!getContextSet(true, monitor.getElements(), set, this)) return;
+                if (set.size() == 0) {
+                    monitor.setStatus(Status.OK_STATUS);
+                    monitor.done();
+                }
+                else {
+                    final Set<Runnable> wait_list = new HashSet<Runnable>();
+                    for (IRunControl.RunControlContext ctx : set) {
+                        Runnable done = new Runnable() {
+                            public void run() {
+                                wait_list.remove(this);
+                                if (wait_list.isEmpty()) monitor.done();
+                            }
+                        };
+                        wait_list.add(done);
+                        execute(monitor, ctx, !model.isInstructionSteppingEnabled(), done);
+                    }
+                }
+            }
+        };
+        return true;
+    }
+}