Update SnakeYAML Engine to 2.8 (#813)

Changes:
- update version selector and lock files
- adapt code to breaking changes

bench/gradle.lockfile

@@ -40,5 +40,5 @@ org.openjdk.jmh:jmh-generator-reflection:1.37=jmh,jmhCompileClasspath,jmhImpleme
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=jmh,jmhRuntimeClasspath
 org.ow2.asm:asm:9.0=jmh,jmhCompileClasspath,jmhImplementationDependenciesMetadata,jmhRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=jmh,jmhRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=jmh,jmhRuntimeClasspath
 empty=annotationProcessor,apiDependenciesMetadata,compileClasspath,compileOnlyDependenciesMetadata,implementationDependenciesMetadata,intransitiveDependenciesMetadata,jmhAnnotationProcessor,jmhApiDependenciesMetadata,jmhCompileOnlyDependenciesMetadata,jmhIntransitiveDependenciesMetadata,jmhKotlinScriptDef,jmhKotlinScriptDefExtensions,jmhRuntimeOnlyDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeClasspath,runtimeOnlyDependenciesMetadata,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

docs/gradle.lockfile

@@ -33,5 +33,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=testRuntimeClasspath
 empty=annotationProcessor,apiDependenciesMetadata,compileClasspath,compileOnlyDependenciesMetadata,implementationDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeClasspath,runtimeOnlyDependenciesMetadata,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

gradle/libs.versions.toml

@@ -46,9 +46,7 @@ nuValidator = "20.+"
 paguro = "3.+"
 shadowPlugin = "8.1.1"
 slf4j = "1.+"
-# snakeYaml 2.6 removed DumpSettingsBuilder::setScalarResolver,
+snakeYaml = "2.+"
-# which is used by the external YAML renderer (org.pkl.core.YamlRenderer)
-snakeYaml = "2.5"
 spotlessPlugin = "6.25.0"
 wiremock = "3.+"
 

pkl-cli/gradle.lockfile

@@ -93,7 +93,7 @@ org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
 org.slf4j:slf4j-api:2.0.13=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 org.wiremock:wiremock:3.9.2=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 org.xmlunit:xmlunit-core:2.10.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 org.xmlunit:xmlunit-legacy:2.10.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath

pkl-codegen-java/gradle.lockfile

@@ -36,5 +36,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-codegen-kotlin/gradle.lockfile

@@ -39,5 +39,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-commons-cli/gradle.lockfile

@@ -34,5 +34,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-config-java/gradle.lockfile

@@ -37,5 +37,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=pklCodegenJava,runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=pklCodegenJava,runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=pklCodegenJava,runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=pklCodegenJava,runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,apiDependenciesMetadata,compileOnlyDependenciesMetadata,fatJar,firstPartySourcesJars,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,shadow,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-config-kotlin/gradle.lockfile

@@ -36,5 +36,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=pklCodegenKotlin,pklConfigJava,runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=pklCodegenKotlin,pklConfigJava,runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=pklCodegenKotlin,pklConfigJava,runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=pklCodegenKotlin,pklConfigJava,runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,pklConfigJavaAll,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-core/gradle.lockfile

@@ -40,5 +40,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 empty=apiDependenciesMetadata,generatorAnnotationProcessor,generatorApiDependenciesMetadata,generatorCompileOnlyDependenciesMetadata,generatorIntransitiveDependenciesMetadata,generatorKotlinScriptDef,generatorKotlinScriptDefExtensions,generatorRuntimeOnlyDependenciesMetadata,intransitiveDependenciesMetadata,javaExecutable,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-core/src/main/java/org/pkl/core/YamlRenderer.java

@@ -22,6 +22,7 @@ import java.util.*;
 import java.util.regex.Pattern;
 import org.pkl.core.util.Nullable;
 import org.pkl.core.util.yaml.snake.YamlUtils;
+import org.snakeyaml.engine.v2.api.ConstructNode;
 import org.snakeyaml.engine.v2.api.DumpSettings;
 import org.snakeyaml.engine.v2.api.StreamDataWriter;
 import org.snakeyaml.engine.v2.common.FlowStyle;
@@ -29,6 +30,7 @@ import org.snakeyaml.engine.v2.emitter.Emitter;
 import org.snakeyaml.engine.v2.events.*;
 import org.snakeyaml.engine.v2.nodes.Tag;
 import org.snakeyaml.engine.v2.resolver.ScalarResolver;
+import org.snakeyaml.engine.v2.schema.Schema;
 
 final class YamlRenderer implements ValueRenderer {
   private final ScalarResolver resolver = YamlUtils.getEmitterResolver("compat");
@@ -42,7 +44,18 @@ final class YamlRenderer implements ValueRenderer {
         DumpSettings.builder()
             .setIndent(indent)
             .setBestLineBreak("\n")
-            .setScalarResolver(resolver)
+            .setSchema(
+                new Schema() {
+                  @Override
+                  public ScalarResolver getScalarResolver() {
+                    return resolver;
+                  }
+
+                  @Override
+                  public Map<Tag, ConstructNode> getSchemaTagConstructors() {
+                    throw new AssertionError("emitters don't use tag constructors");
+                  }
+                })
             .build();
 
     emitter =

pkl-core/src/main/java/org/pkl/core/stdlib/yaml/ParserNodes.java

@@ -39,6 +39,8 @@ import org.snakeyaml.engine.v2.constructor.StandardConstructor;
 import org.snakeyaml.engine.v2.exceptions.Mark;
 import org.snakeyaml.engine.v2.exceptions.YamlEngineException;
 import org.snakeyaml.engine.v2.nodes.*;
+import org.snakeyaml.engine.v2.resolver.ScalarResolver;
+import org.snakeyaml.engine.v2.schema.Schema;
 
 public final class ParserNodes {
   private static final Pattern WHITESPACE = Pattern.compile("\\s");
@@ -133,12 +135,24 @@ public final class ParserNodes {
 
   private static Load createLoad(VmTyped self, String text, String uri, PklConverter converter) {
     var mode = (String) VmUtils.readMember(self, Identifier.MODE);
-    var resolver = YamlUtils.getParserResolver(mode);
     var useMapping = (boolean) VmUtils.readMember(self, Identifier.USE_MAPPING);
     var settings =
         LoadSettings.builder()
             .setMaxAliasesForCollections(getMaxCollectionAliases(self))
-            .setScalarResolver(resolver)
+            .setSchema(
+                new Schema() {
+                  @Override
+                  public ScalarResolver getScalarResolver() {
+                    return YamlUtils.getParserResolver(mode);
+                  }
+
+                  @Override
+                  public Map<Tag, ConstructNode> getSchemaTagConstructors() {
+                    // ParserNodes.Constructor ignores this method,
+                    // but it is called from its superclass.
+                    return Map.of();
+                  }
+                })
             .setLabel(uri)
             .build();
     var source =

pkl-doc/gradle.lockfile

@@ -78,5 +78,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-executor/gradle.lockfile

@@ -35,5 +35,5 @@ org.organicdesign:Paguro:3.10.3=testRuntimeClasspath
 org.pkl-lang:pkl-config-java-all:0.25.0=pklHistoricalDistributions
 org.slf4j:slf4j-api:1.7.36=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 org.slf4j:slf4j-simple:1.7.36=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=testRuntimeClasspath
 empty=annotationProcessor,apiDependenciesMetadata,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,pklDistributionCurrent,runtimeOnlyDependenciesMetadata,signatures,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-server/gradle.lockfile

@@ -32,5 +32,5 @@ org.junit:junit-bom:5.11.3=testCompileClasspath,testImplementationDependenciesMe
 org.msgpack:msgpack-core:0.9.8=compileClasspath,implementationDependenciesMetadata,runtimeClasspath,testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath
 org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testImplementationDependenciesMetadata,testRuntimeClasspath,testRuntimeOnlyDependenciesMetadata
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,compileOnlyDependenciesMetadata,intransitiveDependenciesMetadata,kotlinCompilerPluginClasspath,kotlinNativeCompilerPluginClasspath,kotlinScriptDef,kotlinScriptDefExtensions,runtimeOnlyDependenciesMetadata,sourcesJar,testAnnotationProcessor,testApiDependenciesMetadata,testCompileOnlyDependenciesMetadata,testIntransitiveDependenciesMetadata,testKotlinScriptDef,testKotlinScriptDefExtensions

pkl-tools/gradle.lockfile

@@ -30,5 +30,5 @@ org.jline:jline-terminal-jansi:3.23.0=runtimeClasspath,testRuntimeClasspath
 org.jline:jline-terminal:3.23.0=runtimeClasspath,testRuntimeClasspath
 org.msgpack:msgpack-core:0.9.8=runtimeClasspath,testRuntimeClasspath
 org.organicdesign:Paguro:3.10.3=runtimeClasspath,testRuntimeClasspath
-org.snakeyaml:snakeyaml-engine:2.5=runtimeClasspath,testRuntimeClasspath
+org.snakeyaml:snakeyaml-engine:2.8=runtimeClasspath,testRuntimeClasspath
 empty=annotationProcessor,dummyAnnotationProcessor,dummyCompileClasspath,dummyRuntimeClasspath,fatJar,firstPartySourcesJars,shadow,signatures,testAnnotationProcessor