com.google.gwt.codegen.server.PlainStringGenerator Maven / Gradle / Ivy
/*
* Copyright 2011 Google Inc.
*
* 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.google.gwt.codegen.server;
/**
* Helper class to produce string expressions consisting of literals and
* computed values.
*/
class PlainStringGenerator extends StringGenerator {
private boolean firstExpression = true;
/**
* Initialize the StringGenerator with an output buffer.
*
* @param buf output buffer
*/
PlainStringGenerator(StringBuilder buf) {
super(buf);
}
@Override
protected void afterExpression(Type type) {
firstExpression = false;
}
@Override
protected void beforeExpression(Type type) {
if (firstExpression) {
if (type == Type.PRIMITIVE) {
buf.append("\"\" + ");
}
} else {
buf.append(" + ");
}
}
@Override
protected void finishOutput() {
if (firstExpression) {
buf.append("\"\"");
}
}
@Override
protected void forceStringPrefix() {
if (firstExpression) {
buf.append("\"\" + ");
}
}
@Override
protected void forceStringSuffix() {
}
}