com.oracle.truffle.api.nodes.Node.getSourceSection()方法的使用及代码示例

x33g5p2x  于2022-01-25 转载在 其他  
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本文整理了Java中com.oracle.truffle.api.nodes.Node.getSourceSection()方法的一些代码示例，展示了Node.getSourceSection()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Node.getSourceSection()方法的具体详情如下：
包路径：com.oracle.truffle.api.nodes.Node
类名称：Node
方法名：getSourceSection

Node.getSourceSection介绍

[英]Retrieves the segment of guest language source code that is represented by this Node. The default implementation of this method returns null. If your node represents a segment of the source code, override this method and return a eagerly or lazily computed source section value. This method is not designed to be invoked on compiled code paths. May be called on any thread and without a language context being active.

Simple example implementation using a simple implementation using a field: com.oracle.truffle.api.nodes.NodeSnippets.SimpleNode

Recommended implementation computing the source section lazily from primitive fields: com.oracle.truffle.api.nodes.NodeSnippets.RecommendedNode
[中]检索此节点表示的来宾语言源代码段。此方法的默认实现返回null。如果您的节点代表源代码的一段，请重写此方法并返回一个急切或延迟计算的源节值。此方法不是为在编译代码路径上调用而设计的。可以在任何线程上调用，且无需激活语言上下文。
简单示例实现使用一个简单的实现使用一个字段：com。神谕松露。应用程序编程接口。节点。点乳头。单纯形
推荐的实现是从基本字段：com惰性地计算源代码部分。神谕松露。应用程序编程接口。节点。点乳头。推荐节点

代码示例

代码示例来源：origin: com.oracle/truffle

  1. /**
  2.  * Assigns a link to a guest language source section to this node.
  3.  *
  4.  * @param section the object representing a section in guest language source code
  5.  */
  6. public final void assignSourceSection(SourceSection section) {
  7.   if (sourceSection != null) {
  8.     // Patch this test during the transition to constructor-based
  9.     // source attribution, which would otherwise trigger this
  10.     // exception. This method will eventually be deprecated.
  11.     if (getSourceSection() != section) {
  12.       throw new IllegalStateException("Source section is already assigned. Old: " + getSourceSection() + ", new: " + section);
  13.     }
  14.   }
  15.   this.sourceSection = section;
  16. }

代码示例来源：origin: com.oracle.truffle/truffle-api

  1. /**
  2.  * Originally returned the <em>tags</em> if any, associated with a node; now unsupported.
  3.  *
  4.  * @since 0.8 or earlier
  5.  */
  6. public static String printSyntaxTags(final Object node) {
  7.   if ((node instanceof Node) && ((Node) node).getSourceSection() != null) {
  8.     return ((Node) node).getSourceSection().toString();
  9.   }
  10.   return "";
  11. }

代码示例来源：origin: com.oracle/truffle

  1. private static void updateSourceSection(Node oldNode, Node newNode) {
  2.   if (newNode.getSourceSection() == null) {
  3.     newNode.assignSourceSection(oldNode.getSourceSection());
  4.   }
  5. }

代码示例来源：origin: org.graalvm.truffle/truffle-api

  1. /**
  2.  * Originally returned the <em>tags</em> if any, associated with a node; now unsupported.
  3.  *
  4.  * @since 0.8 or earlier
  5.  */
  6. public static String printSyntaxTags(final Object node) {
  7.   if ((node instanceof Node) && ((Node) node).getSourceSection() != null) {
  8.     return ((Node) node).getSourceSection().toString();
  9.   }
  10.   return "";
  11. }

代码示例来源：origin: com.oracle/truffle

  1. private static String getSourceSectionInfo(Node newNode) {
  2.   SourceSection sourceSection = newNode.getSourceSection();
  3.   if (sourceSection != null) {
  4.     return ", \"identifier\": \"" + sourceSection.getIdentifier() + "\" ";
  5.   } else {
  6.     return "";
  7.   }
  8. }

代码示例来源：origin: org.graalvm.compiler/compiler

  1. private static String extractSourceSection(OptimizedDirectCallNode node) {
  2.   Node cnode = node;
  3.   while (cnode.getSourceSection() == null && !(cnode instanceof RootNode)) {
  4.     cnode = cnode.getParent();
  5.     if (cnode == null) {
  6.       return "";
  7.     }
  8.   }
  9.   return getShortDescription(cnode.getSourceSection());
  10. }

代码示例来源：origin: com.oracle/truffle

  1. public boolean visit(Node node) {
  2.     final SourceSection sourceSection = node.getSourceSection();
  3.     if (sourceSection != null) {
  4.       source = sourceSection.getSource();
  5.       return false;
  6.     }
  7.     return true;
  8.   }
  9. }

代码示例来源：origin: com.oracle.truffle/truffle-api

  1. /**
  2.  * Retrieves the segment of guest language source code that is represented by this Node, if
  3.  * present; otherwise retrieves the segment represented by the nearest AST ancestor that has
  4.  * this information. Can be called on any thread and without a language context.
  5.  *
  6.  * @return an approximation of the source code represented by this Node
  7.  * @since 0.8 or earlier
  8.  */
  9. @ExplodeLoop
  10. public SourceSection getEncapsulatingSourceSection() {
  11.   Node current = this;
  12.   while (current != null) {
  13.     final SourceSection currentSection = current.getSourceSection();
  14.     if (currentSection != null) {
  15.       return currentSection;
  16.     }
  17.     current = current.parent;
  18.   }
  19.   return null;
  20. }

代码示例来源：origin: org.graalvm.tools/profiler

  1. StackTraceEntry(Instrumenter instrumenter, Node node, byte state) {
  2.   this.tags = instrumenter.queryTags(node);
  3.   this.sourceSection = node.getSourceSection();
  4.   this.instrumentedNode = node;
  5.   this.rootName = extractRootName(instrumentedNode);
  6.   this.state = state;
  7. }

代码示例来源：origin: com.oracle/truffle

  1. public String displaySourceLocation(Node node) {
  2.   if (node == null) {
  3.     return "<unknown>";
  4.   }
  5.   SourceSection section = node.getSourceSection();
  6.   boolean estimated = false;
  7.   if (section == null) {
  8.     section = node.getEncapsulatingSourceSection();
  9.     estimated = true;
  10.   }
  11.   return section.getShortDescription() + (estimated ? "~" : "");
  12. }

代码示例来源：origin: org.graalvm.tools/profiler

  1. public ExecutionEventNode create(EventContext context) {
  2.     Node instrumentedNode = context.getInstrumentedNode();
  3.     if (instrumentedNode.getSourceSection() == null) {
  4.       logger.warning("Instrumented node " + instrumentedNode + " has null SourceSection.");
  5.       return null;
  6.     }
  7.     return new StackPushPopNode(ShadowStack.this, instrumenter, context, compiledOnly);
  8.   }
  9. });

代码示例来源：origin: org.graalvm.compiler/compiler

  1. @Override
  2. public void nodeProperties(PolymorphicSpecializeGraph graph, PolymorphicSpecializeGraph.DumpNode node, Map<String, ? super Object> properties) {
  3.   properties.put("label", node.node.toString());
  4.   properties.put("ROOT?", node.node instanceof RootNode);
  5.   properties.put("LEAF?", node.edge == null);
  6.   properties.put("RootNode", node.node.getRootNode());
  7.   properties.putAll(node.node.getDebugProperties());
  8.   properties.put("SourceSection", node.node.getSourceSection());
  9.   if (Introspection.isIntrospectable(node.node)) {
  10.     final List<Introspection.SpecializationInfo> specializations = Introspection.getSpecializations(node.node);
  11.     for (Introspection.SpecializationInfo specialization : specializations) {
  12.       properties.put(specialization.getMethodName() + ".isActive", specialization.isActive());
  13.       properties.put(specialization.getMethodName() + ".isExcluded", specialization.isExcluded());
  14.       properties.put(specialization.getMethodName() + ".instances", specialization.getInstances());
  15.     }
  16.   }
  17. }

代码示例来源：origin: org.graalvm.tools/profiler

  1. private static void reconstructStack(ArrayList<StackTraceEntry> sourceLocations, Node node, SourceSectionFilter sourceSectionFilter, Instrumenter instrumenter) {
  2.   if (node == null || sourceSectionFilter == null) {
  3.     return;
  4.   }
  5.   // We exclude the node itself as it will be pushed on the stack by the StackPushPopNode
  6.   Node current = node.getParent();
  7.   while (current != null) {
  8.     if (sourceSectionFilter.includes(current) && current.getSourceSection() != null) {
  9.       sourceLocations.add(new StackTraceEntry(instrumenter, current, StackTraceEntry.STATE_INTERPRETED));
  10.     }
  11.     current = current.getParent();
  12.   }
  13. }

代码示例来源：origin: com.oracle/truffle

  1. protected static String sourceInfo(Node node) {
  2.   final SourceSection src = node.getSourceSection();
  3.   if (src != null) {
  4.     if (src instanceof NullSourceSection) {
  5.       final NullSourceSection nullSection = (NullSourceSection) src;
  6.       return nullSection.getShortDescription();
  7.     } else {
  8.       return src.getSource().getName() + ":" + src.getStartLine();
  9.     }
  10.   }
  11.   return "";
  12. }

代码示例来源：origin: com.oracle/truffle

  1. /**
  2.  * Create a new {@link Probe} associated with, and attached to, a Guest Language specific
  3.  * instance of {@link WrapperNode}.
  4.  */
  5. public static Probe insertProbe(WrapperNode wrapper) {
  6.   final SourceSection sourceSection = wrapper.getChild().getSourceSection();
  7.   final ProbeNode probeNode = new ProbeNode(); // private constructor
  8.   probeNode.probe = new Probe(probeNode, sourceSection);  // package private access
  9.   wrapper.insertProbe(probeNode);
  10.   return probeNode.probe;
  11. }

代码示例来源：origin: com.oracle.truffle/truffle-api

  1. public final boolean visit(Node node) {
  2.   SourceSection sourceSection = node.getSourceSection();
  3.   if (InstrumentationHandler.isInstrumentableNode(node, sourceSection)) {
  4.     if (binding.isChildInstrumentedFull(providedTags, rootNode, instrumentedNode, instrumentedNodeSourceSection, node, sourceSection)) {
  5.       if (!visitChild(node)) {
  6.         return false;
  7.       }
  8.     }
  9.     return true;
  10.   }
  11.   NodeUtil.forEachChild(node, this);
  12.   return true;
  13. }

代码示例来源：origin: org.graalvm.truffle/truffle-api

  1. public final boolean visit(Node node) {
  2.   SourceSection sourceSection = node.getSourceSection();
  3.   if (InstrumentationHandler.isInstrumentableNode(node, sourceSection)) {
  4.     if (binding.isChildInstrumentedFull(providedTags, rootNode, instrumentedNode, instrumentedNodeSourceSection, node, sourceSection)) {
  5.       if (!visitChild(node)) {
  6.         return false;
  7.       }
  8.     }
  9.     return true;
  10.   }
  11.   NodeUtil.forEachChild(node, this);
  12.   return true;
  13. }

代码示例来源：origin: org.graalvm.truffle/truffle-api

  1. private static boolean hasLargerParent(Node ch, int sectionLength) {
  2.     Node parent = ch.getParent();
  3.     while (parent != null) {
  4.       if (parent instanceof InstrumentableNode && ((InstrumentableNode) parent).isInstrumentable() || parent instanceof RootNode) {
  5.         SourceSection pss = parent.getSourceSection();
  6.         if (pss != null && pss.getCharLength() > sectionLength) {
  7.           return true;
  8.         }
  9.       }
  10.       parent = parent.getParent();
  11.     }
  12.     return false;
  13.   }
  14. }

代码示例来源：origin: org.graalvm.truffle/truffle-api

  1. @Override
  2. @SuppressWarnings("deprecation")
  3. public final ExecutionEventNode lookupExecutionEventNode(Node node, EventBinding<?> binding) {
  4.   if (!InstrumentationHandler.isInstrumentableNode(node, node.getSourceSection())) {
  5.     return null;
  6.   }
  7.   Node p = node.getParent();
  8.   if (p instanceof InstrumentableFactory.WrapperNode) {
  9.     InstrumentableFactory.WrapperNode w = (InstrumentableFactory.WrapperNode) p;
  10.     return w.getProbeNode().lookupExecutionEventNode(binding);
  11.   } else {
  12.     return null;
  13.   }
  14. }

代码示例来源：origin: org.graalvm.truffle/truffle-api

  1. public void onNodeInserted(RootNode rootNode, Node tree) {
  2.   // for input filters to be updated correctly we need to
  3.   // start traversing with the parent instrumentable node.
  4.   Node parentInstrumentable = tree;
  5.   while (parentInstrumentable != null && parentInstrumentable.getParent() != null) {
  6.     parentInstrumentable = parentInstrumentable.getParent();
  7.     if (InstrumentationHandler.isInstrumentableNode(parentInstrumentable, parentInstrumentable.getSourceSection())) {
  8.       break;
  9.     }
  10.   }
  11.   assert parentInstrumentable != null;
  12.   if (!sourceSectionBindings.isEmpty()) {
  13.     visitRoot(rootNode, parentInstrumentable, new NotifyLoadedListenerVisitor(sourceSectionBindings), true);
  14.   }
  15.   if (!executionBindings.isEmpty()) {
  16.     visitRoot(rootNode, parentInstrumentable, new InsertWrappersVisitor(executionBindings), true);
  17.   }
  18. }

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