Use Empty instead of Void for argument

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

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/AbstractDeclaredStatement.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/AbstractDeclaredStatement.java
index a457fb81cd6f06c82bc148bcbe0f8834dd63c668..b9fc1ce5c159c35ac68b28380eba39ca5eada988 100644 (file)
--- a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/AbstractDeclaredStatement.java
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/AbstractDeclaredStatement.java
@@ -7,15 +7,17 @@
  */
 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt;
 
+import static com.google.common.base.Verify.verifyNotNull;
 import static java.util.Objects.requireNonNull;
 
 import com.google.common.annotations.Beta;
 import com.google.common.collect.ImmutableList;
 import java.util.Collection;
 import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.yang.common.Empty;
+import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
-import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
 
 /**
  * An abstract base class for {@link DeclaredStatement} implementations. This is a direct competition to
@@ -23,12 +25,13 @@ import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  * implementations.
  */
 @Beta
+// FIXME: 7.0.0: we should be able to promote this to model.spi.meta package.
 public abstract class AbstractDeclaredStatement<A> extends AbstractModelStatement<A> implements DeclaredStatement<A> {
     protected AbstractDeclaredStatement() {
     }
 
     @Override
-    public final StatementSource getStatementSource() {
+    public StatementSource getStatementSource() {
         return StatementSource.DECLARATION;
     }
 
@@ -53,10 +56,25 @@ public abstract class AbstractDeclaredStatement<A> extends AbstractModelStatemen
     }
 
     public abstract static class WithRawArgument<A> extends AbstractDeclaredStatement<A> {
+        public abstract static class WithSubstatements<A> extends WithRawArgument<A> {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final String rawArgument,
+                    final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                super(rawArgument);
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
+
         private final String rawArgument;
 
-        protected WithRawArgument(final StmtContext<A, ?, ?> context) {
-            rawArgument = context.rawStatementArgument();
+        protected WithRawArgument(final String rawArgument) {
+            this.rawArgument = rawArgument;
         }
 
         @Override
@@ -65,23 +83,86 @@ public abstract class AbstractDeclaredStatement<A> extends AbstractModelStatemen
         }
     }
 
+    public abstract static class WithQNameArgument extends AbstractDeclaredStatement<QName> {
+        public abstract static class WithSubstatements extends WithQNameArgument {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final QName argument,
+                    final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                super(argument);
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
+
+        private final @NonNull QName argument;
+
+        protected WithQNameArgument(final QName argument) {
+            this.argument = requireNonNull(argument);
+        }
+
+        @Override
+        public final QName argument() {
+            return argument;
+        }
+
+        @Override
+        public final String rawArgument() {
+            return argument.getLocalName();
+        }
+    }
+
     public abstract static class WithRawStringArgument extends WithRawArgument<String> {
-        protected WithRawStringArgument(final StmtContext<String, ?, ?> context) {
-            super(context);
+        public abstract static class WithSubstatements extends WithRawStringArgument {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final String rawArgument,
+                    final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                super(rawArgument);
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
+
+        protected WithRawStringArgument(final String rawArgument) {
+            super(verifyNotNull(rawArgument));
         }
 
         @Override
         public final String argument() {
-            return rawArgument();
+            return verifyNotNull(rawArgument());
         }
     }
 
     public abstract static class WithArgument<A> extends WithRawArgument<A> {
-        private final A argument;
+        public abstract static class WithSubstatements<A> extends WithArgument<A> {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final String rawArgument, final A argument,
+                    final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                super(rawArgument, argument);
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
 
-        protected WithArgument(final StmtContext<A, ?, ?> context) {
-            super(context);
-            argument = context.getStatementArgument();
+        private final @NonNull A argument;
+
+        protected WithArgument(final String rawArgument, final A argument) {
+            super(rawArgument);
+            this.argument = requireNonNull(argument);
         }
 
         @Override
@@ -91,14 +172,29 @@ public abstract class AbstractDeclaredStatement<A> extends AbstractModelStatemen
     }
 
     public abstract static class ArgumentToString<A> extends AbstractDeclaredStatement<A> {
+        public abstract static class WithSubstatements<A> extends ArgumentToString<A> {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final A argument,
+                    final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                super(argument);
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
+
         private final @NonNull A argument;
 
-        protected ArgumentToString(final A argument) {
+        protected ArgumentToString(final @NonNull A argument) {
             this.argument = requireNonNull(argument);
         }
 
         @Override
-        public final @NonNull A argument() {
+        public final A argument() {
             return argument;
         }
 
@@ -107,4 +203,29 @@ public abstract class AbstractDeclaredStatement<A> extends AbstractModelStatemen
             return argument.toString();
         }
     }
+
+    public abstract static class WithoutArgument extends AbstractDeclaredStatement<Empty> {
+        public abstract static class WithSubstatements extends WithoutArgument {
+            private final @NonNull Object substatements;
+
+            protected WithSubstatements(final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+                this.substatements = maskList(substatements);
+            }
+
+            @Override
+            public final Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
+                return unmaskList(substatements);
+            }
+        }
+
+        @Override
+        public final Empty argument() {
+            return Empty.getInstance();
+        }
+
+        @Override
+        public final String rawArgument() {
+            return null;
+        }
+    }
 }