Use classpathFromResources in recipes generated for Refaster rules

src/main/java/org/openrewrite/java/template/Semantics.java

@@ -15,6 +15,7 @@
  */
 package org.openrewrite.java.template;
 
+import org.openrewrite.ExecutionContext;
 import org.openrewrite.java.JavaTemplate;
 import org.openrewrite.java.JavaVisitor;
 import org.openrewrite.java.template.function.*;
@@ -112,4 +113,94 @@ public static JavaTemplate.Builder statement(JavaVisitor<?> owner, String name,
     public static JavaTemplate.Builder statement(JavaVisitor<?> owner, String name, Stat10<?, ?, ?, ?, ?, ?, ?, ?, ?, ?> p) {
         return new PatternBuilder(name).build(owner);
     }
+
+    // Again, but with a first ExecutionContext argument for JavaParser classpathFromResources
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr0<?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr1<?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr2<?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr3<?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr4<?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr5<?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr6<?, ?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr7<?, ?, ?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr8<?, ?, ?, ?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr9<?, ?, ?, ?, ?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder expression(ExecutionContext ctx, JavaVisitor<?> owner, String name, Expr10<?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?> f) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat0 p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat1<?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat2<?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat3<?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat4<?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat5<?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat6<?, ?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat7<?, ?, ?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat8<?, ?, ?, ?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat9<?, ?, ?, ?, ?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
+
+    public static JavaTemplate.Builder statement(ExecutionContext ctx, JavaVisitor<?> owner, String name, Stat10<?, ?, ?, ?, ?, ?, ?, ?, ?, ?> p) {
+        return new PatternBuilder(name).build(ctx, owner);
+    }
 }

src/main/java/org/openrewrite/java/template/internal/ClasspathJarNameDetector.java

@@ -19,6 +19,7 @@
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
 import com.sun.tools.javac.tree.TreeScanner;
+import org.jspecify.annotations.Nullable;
 
 import javax.tools.JavaFileObject;
 import java.util.LinkedHashSet;
@@ -38,7 +39,7 @@ public class ClasspathJarNameDetector {
     public static Set<String> classpathFor(JCTree input, List<Symbol> imports) {
         Set<String> jarNames = new LinkedHashSet<String>() {
             @Override
-            public boolean add(String s) {
+            public boolean add(@Nullable String s) {
                 return s != null && super.add(s);
             }
         };
@@ -47,13 +48,13 @@ public boolean add(String s) {
             jarNames.add(jarNameFor(anImport));
         }
 
-        // Detect fully qualified classes
         new TreeScanner() {
             @Override
             public void scan(JCTree tree) {
+                // Detect fully qualified classes
                 if (tree instanceof JCFieldAccess &&
-                    ((JCFieldAccess) tree).sym instanceof Symbol.ClassSymbol &&
-                    Character.isUpperCase(((JCFieldAccess) tree).getIdentifier().toString().charAt(0))) {
+                        ((JCFieldAccess) tree).sym instanceof Symbol.ClassSymbol &&
+                        Character.isUpperCase(((JCFieldAccess) tree).getIdentifier().toString().charAt(0))) {
                     jarNames.add(jarNameFor(((JCFieldAccess) tree).sym));
                 }
                 super.scan(tree);
@@ -64,7 +65,7 @@ public void scan(JCTree tree) {
     }
 
 
-    private static String jarNameFor(Symbol anImport) {
+    private static @Nullable String jarNameFor(Symbol anImport) {
         Symbol.ClassSymbol enclClass = anImport instanceof Symbol.ClassSymbol ? (Symbol.ClassSymbol) anImport : anImport.enclClass();
         while (enclClass.enclClass() != null && enclClass.enclClass() != enclClass) {
             enclClass = enclClass.enclClass();

src/main/java/org/openrewrite/java/template/internal/PatternBuilder.java

@@ -16,6 +16,7 @@
 package org.openrewrite.java.template.internal;
 
 import lombok.Value;
+import org.openrewrite.ExecutionContext;
 import org.openrewrite.java.JavaTemplate;
 import org.openrewrite.java.JavaVisitor;
 
@@ -38,4 +39,16 @@ public JavaTemplate.Builder build(JavaVisitor<?> owner) {
             throw new RuntimeException(e);
         }
     }
+
+    public JavaTemplate.Builder build(ExecutionContext ctx, JavaVisitor<?> owner) {
+        try {
+            Class<?> templateClass = Class.forName(owner.getClass().getName() + "_" + name, true,
+                    owner.getClass().getClassLoader());
+            Method getTemplate = templateClass.getDeclaredMethod("getTemplate", ExecutionContext.class);
+            return (JavaTemplate.Builder) getTemplate.invoke(null, ctx);
+        } catch (ClassNotFoundException | NoSuchMethodException | InvocationTargetException |
+                 IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
 }

src/main/java/org/openrewrite/java/template/internal/TemplateCode.java

@@ -35,7 +35,15 @@
 
 public class TemplateCode {
 
-    public static <T extends JCTree> String process(T tree, @Nullable Type returnType, List<JCTree.JCVariableDecl> parameters, List<JCTree.JCTypeParameter> typeParameters, int pos, boolean asStatement, boolean fullyQualified) {
+    public static <T extends JCTree> String process(
+            T tree,
+            @Nullable Type returnType,
+            List<JCTree.JCVariableDecl> parameters,
+            List<JCTree.JCTypeParameter> typeParameters,
+            int pos,
+            boolean asStatement,
+            boolean fullyQualified,
+            boolean classpathFromResources) {
         StringWriter writer = new StringWriter();
         TemplateCodePrinter printer = new TemplateCodePrinter(writer, parameters, pos, fullyQualified);
         try {
@@ -62,18 +70,18 @@ public static <T extends JCTree> String process(T tree, @Nullable Type returnTyp
             if (!printer.staticImports.isEmpty()) {
                 builder.append("\n        .staticImports(").append(printer.staticImports.stream().map(i -> '"' + i + '"').collect(joining(", "))).append(")");
             }
-            List<Symbol> imports = ImportDetector.imports(tree);
-            Set<String> jarNames = ClasspathJarNameDetector.classpathFor(tree, imports);
+            Set<String> jarNames = ClasspathJarNameDetector.classpathFor(tree, ImportDetector.imports(tree));
             for (JCTree.JCVariableDecl parameter : parameters) {
                 jarNames.addAll(ClasspathJarNameDetector.classpathFor(parameter, ImportDetector.imports(parameter)));
             }
             if (!jarNames.isEmpty()) {
-                // It might be preferable to enumerate exactly the needed dependencies rather than the full classpath
-                // But this is expedient
-                // See https://github.com/openrewrite/rewrite-templating/issues/86
-                // String classpath = jarNames.stream().map(jarName -> '"' + jarName + '"').sorted().collect(joining(", "));
-                // builder.append("\n        .javaParser(JavaParser.fromJavaVersion().classpath(").append(classpath).append("))");
-                builder.append("\n        .javaParser(JavaParser.fromJavaVersion().classpath(JavaParser.runtimeClasspath()))");
+                builder.append("\n        .javaParser(JavaParser.fromJavaVersion()");
+                if (classpathFromResources) {
+                    String joinedJarNames = jarNames.stream().collect(joining("\", \"", "\"", "\""));
+                    builder.append(".classpathFromResources(ctx, ").append(joinedJarNames).append("))\n        ");
+                } else {
+                    builder.append(".classpath(JavaParser.runtimeClasspath()))\n        ");
+                }
             }
             return builder.toString();
         } catch (IOException e) {

src/main/java/org/openrewrite/java/template/processor/TemplateDescriptor.java

@@ -148,8 +148,19 @@ public String toJavaTemplateBuilder(int pos) {
             tree = ((JCTree.JCReturn) tree).getExpression();
         }
 
+        String javaParserClasspathFrom = processingEnv.getOptions().get("rewrite.javaParserClasspathFrom");
+        boolean classpathFromResources = "resources".equals(javaParserClasspathFrom);
+
         List<JCTree.JCTypeParameter> typeParameters = classDecl.typarams == null ? emptyList() : classDecl.typarams;
-        return TemplateCode.process(tree, method.getReturnType().type, method.getParameters(), typeParameters, pos, method.restype.type instanceof Type.JCVoidType, true);
+        return TemplateCode.process(
+                tree,
+                method.getReturnType().type,
+                method.getParameters(),
+                typeParameters,
+                pos,
+                method.restype.type instanceof Type.JCVoidType,
+                true,
+                classpathFromResources);
     }
 
     public boolean validate() {