/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.painless.node;
import org.elasticsearch.painless.Definition;
import org.elasticsearch.painless.Globals;
import org.elasticsearch.painless.Definition.Sort;
import java.util.Set;
import org.elasticsearch.painless.Location;
import org.elasticsearch.painless.Locals;
import org.elasticsearch.painless.MethodWriter;
/**
* Represents a constant inserted into the tree replacing
* other constants during constant folding. (Internal only.)
*/
final class EConstant extends AExpression {
EConstant(Location location, Object constant) {
super(location);
this.constant = constant;
}
@Override
void extractVariables(Set<String> variables) {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
void analyze(Locals locals) {
if (constant instanceof String) {
actual = Definition.STRING_TYPE;
} else if (constant instanceof Double) {
actual = Definition.DOUBLE_TYPE;
} else if (constant instanceof Float) {
actual = Definition.FLOAT_TYPE;
} else if (constant instanceof Long) {
actual = Definition.LONG_TYPE;
} else if (constant instanceof Integer) {
actual = Definition.INT_TYPE;
} else if (constant instanceof Character) {
actual = Definition.CHAR_TYPE;
} else if (constant instanceof Short) {
actual = Definition.SHORT_TYPE;
} else if (constant instanceof Byte) {
actual = Definition.BYTE_TYPE;
} else if (constant instanceof Boolean) {
actual = Definition.BOOLEAN_TYPE;
} else {
throw createError(new IllegalStateException("Illegal tree structure."));
}
}
@Override
void write(MethodWriter writer, Globals globals) {
Sort sort = actual.sort;
switch (sort) {
case STRING: writer.push((String)constant); break;
case DOUBLE: writer.push((double)constant); break;
case FLOAT: writer.push((float)constant); break;
case LONG: writer.push((long)constant); break;
case INT: writer.push((int)constant); break;
case CHAR: writer.push((char)constant); break;
case SHORT: writer.push((short)constant); break;
case BYTE: writer.push((byte)constant); break;
case BOOL: writer.push((boolean)constant); break;
default:
throw createError(new IllegalStateException("Illegal tree structure."));
}
}
@Override
public String toString() {
String c = constant.toString();
if (constant instanceof String) {
c = "'" + c + "'";
}
return singleLineToString(constant.getClass().getSimpleName(), c);
}
}