AlwaysHalt tag on call to breakpoint built-in

Author: OctaveLarose

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/debug/PythonDebugTest.java

@@ -601,6 +601,37 @@ public void testSourceFileURI() throws Throwable {
         }
     }
 
+    @Test
+    public void testInlineEvaluationBreakpointBuiltin() throws Throwable {
+        final Source source = Source.newBuilder("python", """
+                        a = 1
+                        breakpoint()
+                        b = 2
+                        breakpoint # not invoking, therefore no breakpoint inserted
+                        """, "test_inline.py").buildLiteral();
+
+        try (DebuggerSession session = tester.startSession()) {
+            session.install(Breakpoint.newBuilder(DebuggerTester.getSourceImpl(source)).lineIs(1).build());
+            session.install(Breakpoint.newBuilder(DebuggerTester.getSourceImpl(source)).lineIs(3).build());
+            tester.startEval(source);
+            expectSuspended((SuspendedEvent event) -> {
+                DebugStackFrame frame = event.getTopStackFrame();
+                assertEquals(1, frame.getSourceSection().getStartLine());
+                event.prepareContinue();
+            });
+            expectSuspended((SuspendedEvent event) -> {
+                DebugStackFrame frame = event.getTopStackFrame();
+                assertEquals(2, frame.getSourceSection().getStartLine());
+                event.prepareContinue();
+            });
+            expectSuspended((SuspendedEvent event) -> {
+                DebugStackFrame frame = event.getTopStackFrame();
+                assertEquals(3, frame.getSourceSection().getStartLine());
+                event.prepareContinue();
+            });
+        }
+    }
+
     private void expectSuspended(SuspendedCallback callback) {
         tester.expectSuspended(callback);
     }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/compiler/bytecode_dsl/RootNodeCompiler.java

@@ -57,6 +57,7 @@
 import static com.oracle.graal.python.compiler.bytecode_dsl.BytecodeDSLCompilerUtils.hasDefaultArgs;
 import static com.oracle.graal.python.compiler.bytecode_dsl.BytecodeDSLCompilerUtils.hasDefaultKwargs;
 import static com.oracle.graal.python.compiler.bytecode_dsl.BytecodeDSLCompilerUtils.len;
+import static com.oracle.graal.python.nodes.BuiltinNames.J_BREAKPOINT;
 import static com.oracle.graal.python.nodes.SpecialAttributeNames.J___CLASS__;
 import static com.oracle.graal.python.nodes.SpecialAttributeNames.J___TYPE_PARAMS__;
 import static com.oracle.graal.python.util.PythonUtils.codePointsToInternedTruffleString;
@@ -156,6 +157,7 @@
 import com.oracle.truffle.api.bytecode.BytecodeParser;
 import com.oracle.truffle.api.bytecode.BytecodeRootNodes;
 import com.oracle.truffle.api.bytecode.serialization.BytecodeSerializer;
+import com.oracle.truffle.api.debug.DebuggerTags;
 import com.oracle.truffle.api.instrumentation.StandardTags.StatementTag;
 import com.oracle.truffle.api.source.Source;
 import com.oracle.truffle.api.strings.TruffleString;
@@ -2188,8 +2190,18 @@ private void emitCall(ExprTy func, ExprTy[] args, KeywordTy[] keywords) {
                 } else {
                     assert len(keywords) == 0;
 
+                    boolean isBreakpoint = func instanceof ExprTy.Name && ((ExprTy.Name) func).id.equals(J_BREAKPOINT);
+
+                    if (isBreakpoint) {
+                        b.beginTag(DebuggerTags.AlwaysHalt.class);
+                    }
+
                     func.accept(this); // callable
                     visitArguments(func, args, numArgs);
+
+                    if (isBreakpoint) {
+                        b.endTag(DebuggerTags.AlwaysHalt.class);
+                    }
                 }
             }