/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.asakusafw.dmdl.thundergate.driver;
import java.util.Map;
import com.asakusafw.dmdl.Diagnostic;
import com.asakusafw.dmdl.Diagnostic.Level;
import com.asakusafw.dmdl.model.AstAttribute;
import com.asakusafw.dmdl.model.AstAttributeElement;
import com.asakusafw.dmdl.model.AstLiteral;
import com.asakusafw.dmdl.model.LiteralKind;
import com.asakusafw.dmdl.semantics.Declaration;
import com.asakusafw.dmdl.semantics.DmdlSemantics;
import com.asakusafw.dmdl.spi.AttributeDriver;
import com.asakusafw.dmdl.util.AttributeUtil;
/**
* Processes <code>@thundergate.name</code> annotations.
<h2>'@thundergate.name' attribute</h2>
The attributed declaration must be:
<ul>
<li> with value=[string-literal] </li>
</ul>
*/
public class OriginalNameDriver extends AttributeDriver {
/**
* The attribute name.
*/
public static final String TARGET_NAME = "thundergate.name";
/**
* The element name.
*/
public static final String ELEMENT_NAME = "value";
@Override
public String getTargetName() {
return TARGET_NAME;
}
@Override
public void process(
DmdlSemantics environment,
Declaration declaration,
AstAttribute attribute) {
assert attribute.name.toString().equals(TARGET_NAME);
String value = getString(environment, attribute);
if (value != null) {
declaration.putTrait(
OriginalNameTrait.class,
new OriginalNameTrait(attribute, value));
}
}
private String getString(DmdlSemantics environment, AstAttribute attribute) {
assert environment != null;
assert attribute != null;
Map<String, AstAttributeElement> elements = AttributeUtil.getElementMap(attribute);
AstAttributeElement target = elements.remove(ELEMENT_NAME);
environment.reportAll(AttributeUtil.reportInvalidElements(attribute, elements.values()));
if (target == null) {
environment.report(new Diagnostic(
Level.ERROR,
attribute.name,
"@{0} must declare an element \"{1}=...\"",
TARGET_NAME,
ELEMENT_NAME));
return null;
} else if ((target.value instanceof AstLiteral) == false) {
environment.report(new Diagnostic(
Level.ERROR,
target,
"@{0}.{1} must be a string literal",
TARGET_NAME,
ELEMENT_NAME));
return null;
} else {
AstLiteral literal = (AstLiteral) target.value;
if (literal.kind != LiteralKind.STRING) {
environment.report(new Diagnostic(
Level.ERROR,
target,
"@{0}.{1} must be a string literal",
TARGET_NAME,
ELEMENT_NAME));
return null;
}
return literal.toStringValue();
}
}
}