Clean up argument checking

[yangtools.git] / yang / yang-parser-rfc7950 / src / main / java / org / opendaylight / yangtools / yang / parser / rfc7950 / stmt / extension / ExtensionStatementSupport.java

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/extension/ExtensionStatementSupport.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/extension/ExtensionStatementSupport.java
index 144b7f1cdd87973dc236de76e0351517a9ba1311..32cb7031607788eaa97480489623f20e15e0a3a3 100644 (file)
--- a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/extension/ExtensionStatementSupport.java
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/extension/ExtensionStatementSupport.java
@@ -7,15 +7,24 @@
  */
 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.extension;
 
+import static com.google.common.base.Verify.verify;
+import static com.google.common.base.Verify.verifyNotNull;
+
+import com.google.common.collect.ImmutableList;
+import java.util.IdentityHashMap;
+import java.util.Map;
+import org.eclipse.jdt.annotation.NonNull;
 import org.opendaylight.yangtools.openconfig.model.api.OpenConfigStatements;
 import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
+import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
+import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.ArgumentStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionEffectiveStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.YinElementStatement;
+import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseQNameStatementSupport;
 import org.opendaylight.yangtools.yang.parser.spi.ExtensionNamespace;
-import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractQNameStatementSupport;
 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementDefinitionNamespace;
 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
@@ -23,7 +32,7 @@ import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
 
 public final class ExtensionStatementSupport
-        extends AbstractQNameStatementSupport<ExtensionStatement, ExtensionEffectiveStatement> {
+        extends BaseQNameStatementSupport<ExtensionStatement, ExtensionEffectiveStatement> {
     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
         .EXTENSION)
         .addOptional(YangStmtMapping.ARGUMENT)
@@ -32,6 +41,8 @@ public final class ExtensionStatementSupport
         .addOptional(YangStmtMapping.STATUS)
         .build();
     private static final ExtensionStatementSupport INSTANCE = new ExtensionStatementSupport();
+    private static final ThreadLocal<Map<StmtContext<?, ?, ?>, ExtensionEffectiveStatementImpl>> TL_BUILDERS =
+            new ThreadLocal<>();
 
     private ExtensionStatementSupport() {
         super(YangStmtMapping.EXTENSION);
@@ -46,17 +57,6 @@ public final class ExtensionStatementSupport
         return StmtContextUtils.parseIdentifier(ctx, value);
     }
 
-    @Override
-    public ExtensionStatement createDeclared(final StmtContext<QName, ExtensionStatement,?> ctx) {
-        return new ExtensionStatementImpl(ctx);
-    }
-
-    @Override
-    public ExtensionEffectiveStatement createEffective(
-            final StmtContext<QName, ExtensionStatement, ExtensionEffectiveStatement> ctx) {
-        return ExtensionEffectiveStatementImpl.create(ctx);
-    }
-
     @Override
     public void onStatementDefinitionDeclared(
             final Mutable<QName, ExtensionStatement, ExtensionEffectiveStatement> stmt) {
@@ -75,13 +75,79 @@ public final class ExtensionStatementSupport
             YinElementStatement.class);
 
         stmt.addToNs(StatementDefinitionNamespace.class, stmt.getStatementArgument(),
-            new ModelDefinedStatementSupport(new ModelDefinedStatementDefinition(stmt.getStatementArgument(),
+            new ModelDefinedStatementSupport(new ModelDefinedStatementDefinition(stmt.coerceStatementArgument(),
                 argument != null ? argument.getStatementArgument() : null,
-                        yinElement != null && yinElement.getStatementArgument())));
+                        yinElement != null && yinElement.coerceStatementArgument())));
     }
 
     @Override
     protected SubstatementValidator getSubstatementValidator() {
         return SUBSTATEMENT_VALIDATOR;
     }
+
+    @Override
+    protected ExtensionStatement createDeclared(final StmtContext<QName, ExtensionStatement, ?> ctx,
+            final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+        return new RegularExtensionStatement(ctx.coerceStatementArgument(), substatements);
+    }
+
+    @Override
+    protected ExtensionStatement createEmptyDeclared(final StmtContext<QName, ExtensionStatement, ?> ctx) {
+        return new EmptyExtensionStatement(ctx.coerceStatementArgument());
+    }
+
+    @Override
+    public ExtensionEffectiveStatement createEffective(
+            final StmtContext<QName, ExtensionStatement, ExtensionEffectiveStatement> ctx) {
+        Map<StmtContext<?, ?, ?>, ExtensionEffectiveStatementImpl> tl = TL_BUILDERS.get();
+        if (tl == null) {
+            tl = new IdentityHashMap<>();
+            TL_BUILDERS.set(tl);
+        }
+
+        final ExtensionEffectiveStatementImpl existing = tl.get(ctx);
+        if (existing != null) {
+            // Implies non-empty map, no cleanup necessary
+            return existing;
+        }
+
+        try {
+            final ExtensionEffectiveStatementImpl created = new ExtensionEffectiveStatementImpl(ctx.buildDeclared(),
+                ctx.getSchemaPath().get());
+            verify(tl.put(ctx, created) == null);
+            try {
+                return super.createEffective(ctx);
+            } finally {
+                verify(tl.remove(ctx) == created);
+
+            }
+        } finally {
+            if (tl.isEmpty()) {
+                TL_BUILDERS.remove();
+            }
+        }
+    }
+
+    @Override
+    protected ExtensionEffectiveStatement createEffective(
+            final StmtContext<QName, ExtensionStatement, ExtensionEffectiveStatement> ctx,
+            final ExtensionStatement declared,
+            final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+        return finishCreate(ctx, substatements);
+    }
+
+    @Override
+    protected ExtensionEffectiveStatement createEmptyEffective(
+            final StmtContext<QName, ExtensionStatement, ExtensionEffectiveStatement> ctx,
+            final ExtensionStatement declared) {
+        return finishCreate(ctx, ImmutableList.of());
+    }
+
+    private static @NonNull ExtensionEffectiveStatement finishCreate(final StmtContext<?, ?, ?> ctx,
+            final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+        final ExtensionEffectiveStatementImpl ret = verifyNotNull(verifyNotNull(TL_BUILDERS.get(),
+            "Statement build state not initialized").get(ctx), "No build state found for %s", ctx);
+        ret.setSubstatements(substatements);
+        return ret;
+    }
 }
\ No newline at end of file