Several fixes for shiny 1.1.0

(cherry picked from commit bc02f96)

README.md

@@ -119,3 +119,25 @@ We encourage contributions, and invite interested developers to join in.
 Prospective contributors need to sign the [Oracle Contributor Agreement (OCA)](http://www.oracle.com/technetwork/community/oca-486395.html).
 The access point for contributions, issues and questions about FastR is the [GitHub repository ](https://github.com/graalvm/fastr)
 
+## Troubleshooting
+
+### Build fails when generating R grammar
+
+This problem manifests by the following error message in the build output:
+
+`Parser failed to execute command`
+
+followed by a series of parser errors, such as:
+
+`error(170): R.g:<LINE>:<COL>: the .. range operator isn't allowed in parser rules`
+
+It seems to be an ANTLR issue occurring when `LANG`, `LC_ALL` and `LC_CTYPE` environment
+variables are not set to the same value.
+
+The solution is to set those variables to the same value, e.g.
+
+```
+export LANG=en_US.UTF-8
+export LC_ALL=en_US.UTF-8
+export LC_CTYPE=en_US.UTF-8
+```

com.oracle.truffle.r.library/src/com/oracle/truffle/r/library/fastrGrid/FastRGridExternalLookup.java

@@ -31,6 +31,7 @@
 import com.oracle.truffle.r.library.fastrGrid.color.RGB;
 import com.oracle.truffle.r.library.fastrGrid.grDevices.DevCairo;
 import com.oracle.truffle.r.library.fastrGrid.grDevices.DevCurr;
+import com.oracle.truffle.r.library.fastrGrid.grDevices.DevSet;
 import com.oracle.truffle.r.library.fastrGrid.grDevices.DevHoldFlush;
 import com.oracle.truffle.r.library.fastrGrid.grDevices.DevOff;
 import com.oracle.truffle.r.library.fastrGrid.grDevices.DevSize;
@@ -63,6 +64,8 @@ public static RExternalBuiltinNode lookupDotExternal(String name) {
                 return new DevSize();
             case "devcur":
                 return new DevCurr();
+            case "devset":
+                return DevSet.create();
             case "devoff":
                 return DevOff.create();
             case "svgstring":

com.oracle.truffle.r.library/src/com/oracle/truffle/r/library/fastrGrid/GridContext.java

@@ -59,15 +59,15 @@ public final class GridContext {
     private int currentDeviceIdx = 0;
 
     private GridContext() {
-        devices.add(new DeviceAndState(null, null));
+        devices.add(new DeviceAndState(null, null, null));
     }
 
     private GridContext(GridContext parent) {
         // initialized grid in spawned context. Grid R code calls initGrid(gridEnv) only once and
         // then sets global variable to remember to not call it again, but we need to initialize
         // grid context in newly spawned context, so we do it manually here.
         gridState.init(parent.getGridState().getGridEnv());
-        devices.add(new DeviceAndState(null, null));
+        devices.add(new DeviceAndState(null, null, null));
     }
 
     public static GridContext getContext(RContext rCtx) {
@@ -120,10 +120,17 @@ public void setCurrentDevice(String name, GridDevice currentDevice, String filen
         RGridGraphicsAdapter.addDevice(rCtx, name);
         RGridGraphicsAdapter.setCurrentDevice(rCtx, name);
         currentDeviceIdx = this.devices.size();
-        this.devices.add(new DeviceAndState(currentDevice, filenamePattern));
+        this.devices.add(new DeviceAndState(name, currentDevice, filenamePattern));
         assert devices.size() == RGridGraphicsAdapter.getDevicesCount() : devices.size() + " vs " + RGridGraphicsAdapter.getDevicesCount();
     }
 
+    public void setCurrentDevice(int deviceIdx) {
+        assert deviceIdx > 0 && deviceIdx < this.devices.size();
+        RContext rCtx = RContext.getInstance();
+        RGridGraphicsAdapter.setCurrentDevice(rCtx, this.devices.get(deviceIdx).name);
+        currentDeviceIdx = deviceIdx;
+    }
+
     public void openDefaultDevice() {
         String defaultDev = RGridGraphicsAdapter.getDefaultDevice();
         if (defaultDev.equals("awt") || defaultDev.startsWith("X11")) {
@@ -190,10 +197,12 @@ private void safeOpenImageDev(String filename, String formatName) {
     }
 
     private static final class DeviceAndState {
+        final String name;
         final GridDevice device;
         final GridDeviceState state;
 
-        DeviceAndState(GridDevice device, String filenamePattern) {
+        DeviceAndState(String name, GridDevice device, String filenamePattern) {
+            this.name = name;
             this.device = device;
             this.state = new GridDeviceState(filenamePattern);
         }

com.oracle.truffle.r.library/src/com/oracle/truffle/r/library/fastrGrid/grDevices/DevSet.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 3 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 3 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.r.library.fastrGrid.grDevices;
+
+import static com.oracle.truffle.r.nodes.builtin.CastBuilder.Predef.numericValue;
+
+import com.oracle.truffle.api.dsl.Specialization;
+import com.oracle.truffle.r.library.fastrGrid.GridContext;
+import com.oracle.truffle.r.library.fastrGrid.graphics.RGridGraphicsAdapter;
+import com.oracle.truffle.r.nodes.builtin.RExternalBuiltinNode;
+import com.oracle.truffle.r.runtime.context.RContext;
+
+public abstract class DevSet extends RExternalBuiltinNode.Arg1 {
+
+    static {
+        Casts casts = new Casts(DevSet.class);
+        casts.arg(0).mustBe(numericValue()).asIntegerVector().findFirst();
+    }
+
+    public static DevSet create() {
+        return DevSetNodeGen.create();
+    }
+
+    @Specialization
+    public int doInteger(int deviceIdx) {
+        RContext rCtx = RContext.getInstance();
+        RGridGraphicsAdapter.fixupDevicesVariable(rCtx);
+        GridContext.getContext(rCtx).setCurrentDevice(deviceIdx - 1);
+        return deviceIdx;
+    }
+
+}

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FrameFunctions.java

@@ -507,7 +507,7 @@ protected Object sysCalls(VirtualFrame frame) {
                     @Override
                     public Object apply(Frame f) {
                         RCaller currentCall = RArguments.getCall(f);
-                        if (!currentCall.isPromise() && currentCall.getDepth() <= depth) {
+                        if (currentCall.isValidCaller() && !currentCall.isPromise() && currentCall.getDepth() <= depth) {
                             result = RDataFactory.createPairList(createCall(currentCall), result);
                         }
                         return (!currentCall.isPromise() && RArguments.getDepth(f) == 1) ? result : null;