Handle a source code String in ToCallTargetNode

Author: eregon

src/main/java/org/truffleruby/core/cast/ToCallTargetNode.java

@@ -9,16 +9,25 @@
  */
 package org.truffleruby.core.cast;
 
+import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.dsl.GenerateCached;
 import com.oracle.truffle.api.dsl.GenerateInline;
 import com.oracle.truffle.api.nodes.Node;
+import com.oracle.truffle.api.source.Source;
 import org.truffleruby.core.method.RubyMethod;
 import org.truffleruby.core.method.RubyUnboundMethod;
 import org.truffleruby.core.proc.RubyProc;
+import org.truffleruby.core.string.TStringWithEncoding;
 import org.truffleruby.language.RubyBaseNode;
 
 import com.oracle.truffle.api.RootCallTarget;
 import com.oracle.truffle.api.dsl.Specialization;
+import org.truffleruby.language.RubyGuards;
+import org.truffleruby.language.library.RubyStringLibrary;
+import org.truffleruby.language.loader.ByteBasedCharSequence;
+import org.truffleruby.parser.ParserContext;
+import org.truffleruby.parser.RubySource;
+import org.truffleruby.parser.TranslatorEnvironment;
 
 @GenerateInline
 @GenerateCached(false)
@@ -41,4 +50,21 @@ static RootCallTarget proc(RubyProc proc) {
         return proc.callTarget;
     }
 
+    @TruffleBoundary
+    @Specialization
+    static RootCallTarget string(Node node, Object string) {
+        var code = new TStringWithEncoding(RubyGuards.asTruffleStringUncached(string),
+                RubyStringLibrary.getUncached().getEncoding(string));
+        Source source = Source.newBuilder("ruby", new ByteBasedCharSequence(code), "<parse_ast>").build();
+        TranslatorEnvironment.resetTemporaryVariablesIndex();
+        var parserContext = ParserContext.TOP_LEVEL;
+
+        return getContext(node).getCodeLoader().parse(
+                new RubySource(source, source.getName()),
+                parserContext,
+                null,
+                getContext(node).getRootLexicalScope(),
+                node);
+    }
+
 }

src/main/java/org/truffleruby/debug/TruffleDebugNodes.java

@@ -254,7 +254,7 @@ Object ast(Object code,
                 @Cached RubyStringLibrary strings,
                 @Cached TruffleString.FromJavaStringNode fromJavaStringNode) {
             var codeString = new TStringWithEncoding(RubyGuards.asTruffleStringUncached(code),
-                    RubyStringLibrary.create().getEncoding(code));
+                    RubyStringLibrary.getUncached().getEncoding(code));
             String name = "<parse_ast>";
             var source = Source.newBuilder("ruby", new ByteBasedCharSequence(codeString), name).build();
             var rubySource = new RubySource(source, name);
@@ -1345,7 +1345,7 @@ Object parseAndDump(Object sourceCode, Object focusedNodeClassName, int index, b
             String nodeClassNameString = RubyGuards.getJavaString(focusedNodeClassName);
 
             var code = new TStringWithEncoding(RubyGuards.asTruffleStringUncached(sourceCode),
-                    RubyStringLibrary.create().getEncoding(sourceCode));
+                    RubyStringLibrary.getUncached().getEncoding(sourceCode));
 
             RubyRootNode rootNode = parse(code, mainScript);
             String output = TruffleASTPrinter.dump(rootNode, nodeClassNameString, index);