Teach YANG parser to retain DeclarationReference

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

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/UnionSpecificationSupport.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/UnionSpecificationSupport.java
index 3fcc5f7e20c08183724e837bdb1df742eed3556a..f90526c62e39b386975281552b287ad09efb90da 100644 (file)
--- a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/UnionSpecificationSupport.java
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/UnionSpecificationSupport.java
@@ -7,42 +7,71 @@
  */
 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.type;
 
+import com.google.common.collect.ImmutableList;
+import org.eclipse.jdt.annotation.NonNull;
+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.TypeEffectiveStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.UnionSpecification;
-import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserConfiguration;
+import org.opendaylight.yangtools.yang.model.ri.type.BaseTypes;
+import org.opendaylight.yangtools.yang.model.ri.type.UnionTypeBuilder;
+import org.opendaylight.yangtools.yang.parser.spi.meta.CommonStmtCtx;
+import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
+import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
 
-final class UnionSpecificationSupport extends
-    AbstractStatementSupport<String, UnionSpecification, EffectiveStatement<String, UnionSpecification>> {
-    private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
-        .TYPE)
-        .addMultiple(YangStmtMapping.TYPE)
-        .build();
+final class UnionSpecificationSupport extends AbstractTypeSupport<UnionSpecification> {
+    private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
+        SubstatementValidator.builder(YangStmtMapping.TYPE).addMultiple(YangStmtMapping.TYPE).build();
 
-    UnionSpecificationSupport() {
-        super(YangStmtMapping.TYPE);
+    UnionSpecificationSupport(final YangParserConfiguration config) {
+        super(config);
     }
 
     @Override
-    public String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
-        return value;
+    protected SubstatementValidator getSubstatementValidator() {
+        return SUBSTATEMENT_VALIDATOR;
     }
 
     @Override
-    public UnionSpecification createDeclared(final StmtContext<String, UnionSpecification, ?> ctx) {
-        return new UnionSpecificationImpl(ctx);
+    protected UnionSpecification createDeclared(final StmtContext<QName, UnionSpecification, ?> ctx,
+            final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+        if (substatements.isEmpty()) {
+            throw noType(ctx);
+        }
+        return new UnionSpecificationImpl(ctx.getRawArgument(), ctx.getArgument(), substatements);
     }
 
     @Override
-    public EffectiveStatement<String, UnionSpecification> createEffective(
-            final StmtContext<String, UnionSpecification, EffectiveStatement<String, UnionSpecification>> ctx) {
-        return new UnionSpecificationEffectiveStatement(ctx);
+    protected EffectiveStatement<QName, UnionSpecification> createEffective(
+            final Current<QName, UnionSpecification> stmt,
+            final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+        if (substatements.isEmpty()) {
+            throw noType(stmt);
+        }
+
+        final UnionTypeBuilder builder = BaseTypes.unionTypeBuilder(stmt.argumentAsTypeQName());
+
+        for (final EffectiveStatement<?, ?> subStmt : substatements) {
+            if (subStmt instanceof TypeEffectiveStatement) {
+                builder.addType(((TypeEffectiveStatement<?>)subStmt).getTypeDefinition());
+            }
+        }
+
+        return new TypeEffectiveStatementImpl<>(stmt.declared(), substatements, builder);
     }
 
-    @Override
-    protected SubstatementValidator getSubstatementValidator() {
-        return SUBSTATEMENT_VALIDATOR;
+    private static SourceException noType(final @NonNull CommonStmtCtx stmt) {
+        /*
+         *  https://tools.ietf.org/html/rfc7950#section-9.12
+         *
+         *     When the type is "union", the "type" statement (Section 7.4) MUST be
+         *     present.
+         */
+        return new SourceException("At least one type statement has to be present", stmt);
     }
-}
\ No newline at end of file
+}