Migrate EnumSpecificationSupport

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

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/EnumSpecificationSupport.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/EnumSpecificationSupport.java
index 01aea391f8859dd810ab93c962705aa4ad433253..33998b07abceb989b2f5596fd568119e0310e4fe 100644 (file)
--- a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/EnumSpecificationSupport.java
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/EnumSpecificationSupport.java
@@ -7,19 +7,26 @@
  */
 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.type;
 
+import com.google.common.collect.ImmutableList;
+import java.util.Optional;
 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.EnumEffectiveStatement;
 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.EnumSpecification;
-import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
+import org.opendaylight.yangtools.yang.model.api.stmt.ValueEffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
+import org.opendaylight.yangtools.yang.model.util.type.BaseTypes;
+import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
+import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
 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 EnumSpecificationSupport
-        extends AbstractStatementSupport<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> {
-    private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
-        .TYPE)
-        .addMultiple(YangStmtMapping.ENUM)
-        .build();
+        extends BaseStatementSupport<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> {
+    private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
+            SubstatementValidator.builder(YangStmtMapping.TYPE).addMultiple(YangStmtMapping.ENUM).build();
 
     EnumSpecificationSupport() {
         super(YangStmtMapping.TYPE);
@@ -31,18 +38,73 @@ final class EnumSpecificationSupport
     }
 
     @Override
-    public EnumSpecification createDeclared(final StmtContext<String, EnumSpecification, ?> ctx) {
-        return new EnumSpecificationImpl(ctx);
+    protected SubstatementValidator getSubstatementValidator() {
+        return SUBSTATEMENT_VALIDATOR;
     }
 
     @Override
-    public EffectiveStatement<String, EnumSpecification> createEffective(
-            final StmtContext<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> ctx) {
-        return new EnumSpecificationEffectiveStatement(ctx);
+    protected EnumSpecification createDeclared(final StmtContext<String, EnumSpecification, ?> ctx,
+            final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+        return new EnumSpecificationImpl(ctx, substatements);
     }
 
     @Override
-    protected SubstatementValidator getSubstatementValidator() {
-        return SUBSTATEMENT_VALIDATOR;
+    protected EnumSpecification createEmptyDeclared(final StmtContext<String, EnumSpecification, ?> ctx) {
+        throw noEnum(ctx);
     }
+
+    @Override
+    protected EffectiveStatement<String, EnumSpecification> createEffective(
+            final StmtContext<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> ctx,
+            final EnumSpecification declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+        final EnumerationTypeBuilder builder = BaseTypes.enumerationTypeBuilder(ctx.getSchemaPath().get());
+        Integer highestValue = null;
+        for (final EffectiveStatement<?, ?> stmt : substatements) {
+            if (stmt instanceof EnumEffectiveStatement) {
+                final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) stmt;
+
+                final Optional<Integer> declaredValue =
+                        enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
+                final int effectiveValue;
+                if (declaredValue.isEmpty()) {
+                    if (highestValue != null) {
+                        SourceException.throwIf(highestValue == 2147483647, ctx.getStatementSourceReference(),
+                                "Enum '%s' must have a value statement", enumSubStmt);
+                        effectiveValue = highestValue + 1;
+                    } else {
+                        effectiveValue = 0;
+                    }
+                } else {
+                    effectiveValue = declaredValue.orElseThrow();
+                }
+
+                final EnumPair pair = EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue);
+                if (highestValue == null || highestValue < pair.getValue()) {
+                    highestValue = pair.getValue();
+                }
+
+                builder.addEnum(pair);
+            }
+        }
+
+        return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
+    }
+
+    @Override
+    protected EffectiveStatement<String, EnumSpecification> createEmptyEffective(
+            final StmtContext<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> ctx,
+            final EnumSpecification declared) {
+        throw noEnum(ctx);
+    }
+
+    private static SourceException noEnum(final StmtContext<?, ?, ?> ctx) {
+        /*
+         *  https://tools.ietf.org/html/rfc7950#section-9.6.4
+         *
+         *     The "enum" statement, which is a substatement to the "type"
+         *     statement, MUST be present if the type is "enumeration".
+         */
+        return new SourceException("At least one enum statement has to be present", ctx.getStatementSourceReference());
+    }
+
 }
\ No newline at end of file