Make 'PyFrameObject.f_lineno' writeable.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/DynamicObjectNativeWrapper.java

@@ -136,6 +136,7 @@
 import com.oracle.graal.python.nodes.object.IsBuiltinClassProfile;
 import com.oracle.graal.python.nodes.truffle.PythonArithmeticTypes;
 import com.oracle.graal.python.nodes.truffle.PythonTypes;
+import com.oracle.graal.python.nodes.util.CastToJavaIntNode;
 import com.oracle.graal.python.nodes.util.CoerceToIntegerNode;
 import com.oracle.graal.python.runtime.PythonContext;
 import com.oracle.graal.python.runtime.PythonOptions;
@@ -1164,6 +1165,18 @@ static Object doMemoryview(PMemoryView object, @SuppressWarnings("unused") Pytho
             throw new IllegalStateException("delegate of memoryview object is not native");
         }
 
+        @Specialization(guards = "eq(F_LINENO, key)")
+        static int doFLineno(PFrame object, @SuppressWarnings("unused") PythonNativeWrapper nativeWrapper, @SuppressWarnings("unused") String key, Object value,
+                             @Cached(value = "createLossy()", uncached = "getLossyUncached()") CastToJavaIntNode castToJavaIntNode) {
+            try {
+                int lineno = castToJavaIntNode.execute(value);
+                object.setLine(lineno);
+                return lineno;
+            } catch(PException e) {
+                return -1;
+            }
+        }
+
         @Specialization(guards = "isGenericCase(object, key)", limit = "1")
         static Object doGeneric(@SuppressWarnings("unused") Object object, DynamicObjectNativeWrapper nativeWrapper, String key, Object value,
                         @CachedLibrary("nativeWrapper.createNativeMemberStore()") HashingStorageLibrary lib) throws UnknownIdentifierException {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/frame/PFrame.java

@@ -214,6 +214,10 @@ public void setBackref(PFrame.Reference backref) {
         this.backref = backref;
     }
 
+    public void setLine(int line) {
+        this.line = line;
+    }
+
     @TruffleBoundary
     public int getLine() {
         if (line == -2) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/util/CastToJavaIntNode.java

@@ -93,7 +93,7 @@ public static CastToJavaIntNode getUncached() {
         return CastToJavaIntExactNodeGen.getUncached();
     }
 
-    public static CastToJavaIntNode createLossyUncached() {
+    public static CastToJavaIntNode getLossyUncached() {
         return CastToJavaIntLossyNodeGen.getUncached();
     }