/**
* Copyright 2011-2017 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.directio.text;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.function.Function;
import com.asakusafw.dmdl.Diagnostic;
import com.asakusafw.dmdl.model.AstAttribute;
import com.asakusafw.dmdl.model.AstNode;
import com.asakusafw.dmdl.semantics.DmdlSemantics;
import com.asakusafw.dmdl.semantics.PropertyDeclaration;
import com.asakusafw.dmdl.semantics.Trait;
/**
* Attributes of formatted text fields.
* @since 0.9.1
*/
public class TextFieldTrait implements Trait<TextFieldTrait> {
private static final TextFieldSettings EMPTY_SETTINGS = new TextFieldSettings();
private final AstAttribute attribute;
private final Kind kind;
private final String name;
private final TextFieldSettings settings;
/**
* Creates a new instance.
* @param attribute the original attribute
* @param kind the field kind
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public TextFieldTrait(AstAttribute attribute, Kind kind) {
this.attribute = attribute;
this.kind = kind;
this.name = null;
this.settings = new TextFieldSettings();
}
/**
* Creates a new instance.
* @param attribute the original attribute
* @param name the explicit field name (nullable)
* @param settings the field settings
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public TextFieldTrait(AstAttribute attribute, String name, TextFieldSettings settings) {
this.attribute = attribute;
this.kind = Kind.VALUE;
this.name = name;
this.settings = settings;
}
@Override
public AstNode getOriginalAst() {
return attribute;
}
static void register(
DmdlSemantics environment, PropertyDeclaration property, AstAttribute attribute, TextFieldTrait trait) {
TextFieldTrait other = property.getTrait(TextFieldTrait.class);
if (other == null) {
property.putTrait(TextFieldTrait.class, trait);
} else {
environment.report(new Diagnostic(
Diagnostic.Level.ERROR, attribute.name,
Messages.getString("TextFieldTrait.diagnosticDuplicateAttribute"), //$NON-NLS-1$
property.getOwner().getName(), property.getName(),
attribute.name, other.attribute.name));
}
}
/**
* Returns the trait for the property.
* @param property the property
* @return the trait, or empty if it is not defined
*/
public static Optional<TextFieldTrait> find(PropertyDeclaration property) {
return Optional.ofNullable(property.getTrait(TextFieldTrait.class));
}
/**
* Returns the trait for the property.
* @param property the property
* @return the trait
*/
public static TextFieldTrait get(PropertyDeclaration property) {
return find(property).orElseThrow(NoSuchElementException::new);
}
/**
* Returns the field kind of the property.
* If the field kind is not declared explicitly in the property, this returns the default kind.
* @param property target property
* @return the field kind
*/
public static Kind getKind(PropertyDeclaration property) {
return get(property, trait -> trait.kind).orElse(Kind.VALUE);
}
/**
* Returns the field name of the property.
* If the field name is not declared explicitly in the property, this returns the property name.
* @param property target property
* @return the field name
*/
public static String getName(PropertyDeclaration property) {
return get(property, trait -> trait.name).orElse(property.getName().identifier);
}
/**
* Returns the field settings of the property.
* If the field settings is not declared explicitly in the property, this returns the property settings.
* @param property target property
* @return the field settings
*/
public static TextFieldSettings getSettings(PropertyDeclaration property) {
return get(property, trait -> trait.settings).orElse(EMPTY_SETTINGS);
}
private static <T> Optional<T> get(PropertyDeclaration property, Function<TextFieldTrait, T> getter) {
return find(property).flatMap(t -> Optional.ofNullable(getter.apply(t)));
}
boolean verify(DmdlSemantics environment, PropertyDeclaration declaration) {
return settings.verify(environment, attribute);
}
/**
* Returns the field kind.
* @return the kind
*/
public Kind getKind() {
return kind;
}
/**
* Returns the field name.
* @return the name
*/
public String getName() {
return name;
}
/**
* Returns the settings.
* @return the settings
*/
public TextFieldSettings getSettings() {
return settings;
}
/**
* The field kind.
* @since 0.9.1
*/
public enum Kind {
/**
* normal fields.
*/
VALUE,
/**
* fields which keep file name.
*/
FILE_NAME,
/**
* fields which keep line number.
*/
LINE_NUMBER,
/**
* fields which keep record number.
*/
RECORD_NUMBER,
/**
* ignored fields.
*/
IGNORE,
}
}