/
StringObjectValue.java
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/
StringObjectValue.java
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// Copyright 2020 Google LLC
//
// 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.api.generator.engine.ast;
import com.google.auto.value.AutoValue;
import com.google.common.escape.Escaper;
import com.google.common.escape.Escapers;
@AutoValue
public abstract class StringObjectValue implements ObjectValue {
@Override
public abstract String value();
@Override
public TypeNode type() {
return TypeNode.STRING;
}
public static Builder builder() {
return new AutoValue_StringObjectValue.Builder();
}
public static StringObjectValue withValue(String value) {
return builder().setValue(value).build();
}
@AutoValue.Builder
public abstract static class Builder {
public abstract Builder setValue(String value);
// Private accessors.
abstract String value();
public abstract StringObjectValue autoBuild();
public StringObjectValue build() {
// `\"` is added to the escaped string value for interpreting it correctly in file.
String value = String.format("\"%s\"", StringValueEscaper.escaper.escape(value()));
setValue(value);
return autoBuild();
}
}
private static class StringValueEscaper extends Escaper {
private static final Escaper escaper =
Escapers.builder()
.addEscape('\t', "\\t")
.addEscape('\b', "\\b")
.addEscape('\n', "\\n")
.addEscape('\r', "\\r")
.addEscape('\f', "\\f")
.addEscape('"', "\\\"")
.addEscape('\\', "\\\\")
.build();
private StringValueEscaper() {}
@Override
public String escape(String sourceString) {
return escaper.escape(sourceString);
}
}
}