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/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* 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.turbine.tree;
/**
* An operator kind, with precedence. Only operators that can appear in compile-time constant
* expressions are included.
*/
public enum TurbineOperatorKind {
POST_INCR("++", Precedence.POSTFIX),
POST_DECR("--", Precedence.POSTFIX),
PRE_INCR("++", Precedence.UNARY),
PRE_DECR("--", Precedence.UNARY),
UNARY_PLUS("+", Precedence.UNARY),
NEG("-", Precedence.UNARY),
BITWISE_COMP("~", Precedence.UNARY),
NOT("!", Precedence.UNARY),
MULT("*", Precedence.MULTIPLICATIVE),
DIVIDE("/", Precedence.MULTIPLICATIVE),
MODULO("%", Precedence.MULTIPLICATIVE),
PLUS("+", Precedence.ADDITIVE),
MINUS("-", Precedence.ADDITIVE),
SHIFT_LEFT("<<", Precedence.SHIFT),
SHIFT_RIGHT(">>", Precedence.SHIFT),
UNSIGNED_SHIFT_RIGHT(">>>", Precedence.SHIFT),
LESS_THAN("<", Precedence.RELATIONAL),
GREATER_THAN(">", Precedence.RELATIONAL),
GREATER_THAN_EQ(">=", Precedence.RELATIONAL),
LESS_THAN_EQ("<=", Precedence.RELATIONAL),
INSTANCE_OF("instanceof", Precedence.RELATIONAL),
EQUAL("==", Precedence.EQUALITY),
NOT_EQUAL("!=", Precedence.EQUALITY),
BITWISE_AND("&", Precedence.BIT_AND),
BITWISE_XOR("^", Precedence.BIT_XOR),
BITWISE_OR("|", Precedence.BIT_IOR),
AND("&&", Precedence.AND),
OR("||", Precedence.OR),
TERNARY("?", Precedence.TERNARY),
ASSIGN("=", Precedence.ASSIGNMENT);
private final String name;
private final Precedence prec;
TurbineOperatorKind(String name, Precedence prec) {
this.name = name;
this.prec = prec;
}
@Override
public String toString() {
return name;
}
public Precedence prec() {
return prec;
}
/** Operator precedence groups. */
public enum Precedence {
CAST(14),
POSTFIX(13),
UNARY(12),
MULTIPLICATIVE(11),
ADDITIVE(10),
SHIFT(9),
RELATIONAL(8),
EQUALITY(7),
BIT_AND(6),
BIT_XOR(5),
BIT_IOR(4),
AND(3),
OR(2),
TERNARY(1),
ASSIGNMENT(0);
private final int rank;
public int rank() {
return rank;
}
Precedence(int rank) {
this.rank = rank;
}
}
}
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