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2 changes: 1 addition & 1 deletion
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...engine-v2-json/src/test/java/io/helidon/build/archetype/v2/json/ScriptSerializerTest.java
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223 changes: 223 additions & 0 deletions
223
archetype/engine-v2/src/main/java/io/helidon/build/archetype/engine/v2/ScriptCompiler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| /* | ||
| * Copyright (c) 2022, 2025 Oracle and/or its affiliates. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.helidon.build.archetype.engine.v2; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.UncheckedIOException; | ||
| import java.net.URI; | ||
| import java.nio.file.Path; | ||
| import java.util.ArrayDeque; | ||
| import java.util.Deque; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.function.Consumer; | ||
|
|
||
| import io.helidon.build.archetype.engine.v2.ast.DeclaredBlock; | ||
| import io.helidon.build.archetype.engine.v2.ast.Invocation; | ||
| import io.helidon.build.archetype.engine.v2.ast.Invocation.MethodInvocation; | ||
| import io.helidon.build.archetype.engine.v2.ast.Invocation.ScriptInvocation; | ||
| import io.helidon.build.archetype.engine.v2.ast.Method; | ||
| import io.helidon.build.archetype.engine.v2.ast.Node; | ||
| import io.helidon.build.archetype.engine.v2.ast.Script; | ||
|
|
||
| import static io.helidon.build.common.FileUtils.pathOf; | ||
|
|
||
| /** | ||
| * Script "pseudo" compiler. | ||
| */ | ||
| public class ScriptCompiler { | ||
|
|
||
| /** | ||
| * Compiler features. | ||
| */ | ||
| public enum Feature { | ||
| /** | ||
| * Obfuscate method names. | ||
| */ | ||
| OBFUSCATE(ScriptCompiler::obfuscate), | ||
| /** | ||
| * Inline invocations. | ||
| */ | ||
| INLINE(ScriptCompiler::inline), | ||
| /** | ||
| * Remove outputs. | ||
| */ | ||
| NO_OUTPUT(ScriptCompiler::removeOutputs); | ||
|
|
||
| // TODO validation | ||
|
|
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| private final Consumer<ScriptCompiler> function; | ||
|
|
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| Feature(Consumer<ScriptCompiler> function) { | ||
| this.function = function; | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * "Compile" the given script. | ||
| * | ||
| * @param entrypoint entrypoint | ||
| * @param features features | ||
| * @return compiled script | ||
| */ | ||
| public static Script compile(Path entrypoint, Feature... features) { | ||
| ScriptCompiler compiler = new ScriptCompiler(); | ||
| compiler.readScript(entrypoint); | ||
| for (Feature feature : features) { | ||
| feature.function.accept(compiler); | ||
| } | ||
| return compiler.script; | ||
| } | ||
|
|
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| private final Map<Path, Script> scripts = new HashMap<>(); | ||
| private final Map<DeclaredBlock, Set<Invocation>> invocations = new HashMap<>(); | ||
| private final Map<Node, DeclaredBlock> blocks = new HashMap<>(); | ||
| private final Map<DeclaredBlock, Set<Node>> nodes = new HashMap<>(); | ||
| private Script script; | ||
|
|
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| private ScriptCompiler() { | ||
| } | ||
|
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| private void readScript(Path path) { | ||
| Deque<Unresolved> stack = new ArrayDeque<>(); | ||
| script = readScript(path, inv -> stack.push(new Unresolved(path.getParent(), path.getParent(), inv))); | ||
| while (!stack.isEmpty()) { | ||
| Unresolved elt = stack.pop(); | ||
| Script script = scripts.computeIfAbsent(elt.path, p -> | ||
| readScript(elt.path, inv -> stack.push(new Unresolved(elt, inv)))); | ||
| invocations.computeIfAbsent(script, s -> new HashSet<>()).add(elt.inv); | ||
| } | ||
| } | ||
|
|
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| private Script readScript(Path path, Consumer<ScriptInvocation> consumer) { | ||
| try (Scanner scanner = new Scanner(path, consumer)) { | ||
| return scanner.readScript(ScriptLoader.EMPTY); | ||
| } catch (IOException e) { | ||
| throw new UncheckedIOException(e); | ||
| } | ||
| } | ||
|
|
||
| private void inline() { | ||
| Deque<DeclaredBlock> stack = new ArrayDeque<>(blocks.values()); | ||
| while (!stack.isEmpty()) { | ||
| DeclaredBlock block = stack.pop(); | ||
| Set<Node> enclosed = nodes.get(block); | ||
| if (enclosed == null || enclosed.isEmpty()) { | ||
| nodes.remove(block); | ||
| Set<Invocation> refs = invocations.remove(block); | ||
| if (refs != null) { | ||
| for (Invocation inv : refs) { | ||
| // TODO remove invocation | ||
| DeclaredBlock enclosing = blocks.get(inv); | ||
| if (enclosing != null) { | ||
| stack.push(enclosing); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| Set<Invocation> refs = invocations.get(block); | ||
| if (refs != null && refs.size() == 1) { | ||
| // TODO inline invocations | ||
|
|
||
| } | ||
| } | ||
| } | ||
|
|
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| private void obfuscate() { | ||
| } | ||
|
|
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| private void removeOutputs() { | ||
| } | ||
|
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| private final class Scanner implements ScriptReader { | ||
|
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| private final Deque<DeclaredBlock> stack = new ArrayDeque<>(); | ||
| private final ScriptReader delegate; | ||
| private final Consumer<ScriptInvocation> consumer; | ||
|
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| Scanner(Path path, Consumer<ScriptInvocation> consumer) { | ||
| this.delegate = ScriptReader.create(path); | ||
| this.consumer = consumer; | ||
| } | ||
|
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| @Override | ||
| public void close() throws IOException { | ||
| delegate.close(); | ||
| } | ||
|
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| @Override | ||
| public Script readScript(ScriptLoader loader) { | ||
| return delegate.readScript(loader); | ||
| } | ||
|
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| @Override | ||
| public <T extends Node.Builder<?, ?>> T init(T node) { | ||
| if (node instanceof DeclaredBlock) { | ||
| stack.push((DeclaredBlock) node); | ||
| } | ||
| return delegate.init(node); | ||
| } | ||
|
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||
| @Override | ||
| @SuppressWarnings("unchecked") | ||
| public <T extends Node> T build(Node.Builder<T, ?> node) { | ||
| if (node instanceof DeclaredBlock) { | ||
| stack.pop(); | ||
| } else { | ||
| if (node instanceof MethodInvocation) { | ||
| MethodInvocation inv = (MethodInvocation) node; | ||
| Method method = inv.script().methods().get(inv.method()); | ||
| if (method == null) { | ||
| throw new IllegalStateException("Method not found: " + inv.method()); | ||
| } | ||
| invocations.computeIfAbsent(method, s -> new HashSet<>()).add(inv); | ||
| } else if (node instanceof ScriptInvocation) { | ||
| consumer.accept((ScriptInvocation) node); | ||
| } | ||
| DeclaredBlock block = stack.peek(); | ||
| blocks.put(node, block); | ||
| nodes.computeIfAbsent(block, s -> new HashSet<>()).add(node); | ||
| } | ||
| return (T) node; | ||
| } | ||
| } | ||
|
|
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| private static final class Unresolved { | ||
| private final ScriptInvocation inv; | ||
| private final Path cwd; | ||
| private final Path path; | ||
|
|
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| Unresolved(Unresolved parent, ScriptInvocation inv) { | ||
| this(parent.cwd, parent.path, inv); | ||
| } | ||
|
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| Unresolved(Path cwd, Path dir, ScriptInvocation inv) { | ||
| this.inv = inv; | ||
| if (inv.src() != null) { | ||
| this.path = cwd.resolve(inv.src()).toAbsolutePath().normalize(); | ||
| } else { | ||
| this.path = pathOf(URI.create(inv.url()), getClass().getClassLoader()); | ||
| } | ||
| if (inv.kind() == ScriptInvocation.Kind.EXEC) { | ||
| this.cwd = dir; | ||
| } else { | ||
| this.cwd = cwd; | ||
| } | ||
| } | ||
| } | ||
| } |
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