com.hazelcast.org.codehaus.janino.Token Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2016 Arno Unkrig. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.janino;
import com.hazelcast.org.codehaus.commons.compiler.Location;
import com.hazelcast.org.codehaus.commons.nullanalysis.Nullable;
/**
* Immutable representation of a Java token.
*/
public final
class Token {
@Nullable private final String fileName;
private final int lineNumber;
private final int columnNumber;
@Nullable private Location location; // Created lazily to save overhead.
/**
* The type of this token.
*
* Strictly speaking, this field is redundant, because the token type can always be deduced from the token
* value, e.g. iff the value begins with "'", then the type is {@link TokenType#CHARACTER_LITERAL}.
*
*/
public final TokenType type;
/**
* The text of the token exactly as it appears in the source code.
*
* Iff this token represents a keyword, {@code true}, {@code false}, {@code null} or an operator, then
* this string is {@link String#intern() interned}, so that it can be reference-compared with other interned
* strings.
*
*/
public final String value;
public
Token(@Nullable String fileName, int lineNumber, int columnNumber, TokenType type, String value) {
this.fileName = fileName;
this.lineNumber = lineNumber;
this.columnNumber = columnNumber;
this.type = type;
this.value = value;
}
public
Token(Location location, TokenType type, String value) {
this.fileName = location.getFileName();
this.lineNumber = location.getLineNumber();
this.columnNumber = location.getColumnNumber();
this.location = location;
this.type = type;
this.value = value;
}
/**
* @return The location of the first character of this token
*/
public Location
getLocation() {
if (this.location != null) return this.location;
return (this.location = new Location(this.fileName, this.lineNumber, this.columnNumber));
}
@Override public String
toString() { return this.value; }
}
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