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com.sun.tools.javac.comp

public Class Operators

Class Inheritance

extends Object

java.lang.Object
com.sun.tools.javac.comp.Operators

Imports

com.sun.tools.javac.code.Symbol, .Symbol.OperatorSymbol, .Symtab, .Type, .Type.MethodType, .TypeTag, .Types, com.sun.tools.javac.jvm.ByteCodes, com.sun.tools.javac.resources.CompilerProperties.Errors, com.sun.tools.javac.tree.JCTree, .JCTree.Tag, com.sun.tools.javac.util.Assert, .Context, .JCDiagnostic, .JCDiagnostic.DiagnosticPosition, .List, .Log, .Name, .Names, java.util.HashMap, .Map, .Optional, java.util.function.BiPredicate, .Function, .Predicate, .Supplier, java.util.stream.Stream

This class contains the logic for unary and binary operator resolution/lookup.

This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

Nested and Inner Type Summary

Modifier and Type	Class and Description
pack-priv class	Operators.BinaryBooleanOperator Class representing bitwise operator helpers that operate on boolean types (either boxed or unboxed).
pack-priv class	Operators.BinaryEqualityOperator Class representing equality operator helper that operates on either numeric, boolean or reference types.
pack-priv class	Operators.BinaryNumericOperator Class representing binary operator helpers that operate on numeric types (either boxed or unboxed).
pack-priv abstract class	Operators.BinaryOperatorHelper
pack-priv class	Operators.BinaryShiftOperator Class representing shift operator helper that operates on integral operand types (either boxed or unboxed).
pack-priv class	Operators.BinaryStringOperator Class representing string concatenation operator helper that operates on at least an string operand.
pack-priv static enum	Operators.ComparisonKind This enum represent the possible kinds of an comparison test ('==' and '!=').
pack-priv abstract class	Operators.OperatorHelper Common root for all operator helpers.
pack-priv static enum	Operators.OperatorType The constants in this enum represent the types upon which all the operator helpers operate upon.
pack-priv class	Operators.UnaryBooleanOperator Class representing unary operator helpers that operate on boolean types (either boxed or unboxed).
pack-priv class	Operators.UnaryNumericOperator Class representing unary operator helpers that operate on numeric types (either boxed or unboxed).
pack-priv abstract class	Operators.UnaryOperatorHelper Common superclass for all unary operator helpers.
pack-priv class	Operators.UnaryPrefixPostfixOperator Class representing prefix/postfix unary operator helpers.
pack-priv class	Operators.UnaryReferenceOperator Class representing unary operator helpers that operate on reference types.

Field Summary

Modifier and Type	Field and Description
private Map<Name, List<Operators.BinaryOperatorHelper>>	binaryOperators Binary operators map.
private final Log	log
private final Names	names
public final Symbol.OperatorSymbol	noOpSymbol A symbol that stands for a missing operator.
protected static final Context.Key<Operators>	operatorsKey
private Name[]	opname The names of all operators.
private final Symtab	syms
private final Types	types
private Map<Name, List<Operators.UnaryOperatorHelper>>	unaryOperators Unary operators map.

Constructor Summary

Access	Constructor and Description
protected	Operators(Context context)

Method Summary

Modifier and Type	Method and Description
pack-priv Type	binaryPromotion(Type t1, Type t2) Perform binary promotion of a pair of types; this routine implements JLS 5.6.2.
private void	initBinaryOperators() Initialize all binary operators.
private void	initOperatorNames() Initialize operator name array.
private final <O extends Operators.OperatorHelper> void	initOperators(Map<Name, List<O>> opsMap, O... ops) Complete the initialization of an operator helper by storing it into the corresponding operator map.
private void	initUnaryOperators() Initialize all unary operators.
public static Operators	instance(Context context)
pack-priv Symbol.OperatorSymbol	lookupBinaryOp(Predicate<Symbol.OperatorSymbol> applicabilityTest)
private Symbol.OperatorSymbol	makeOperator(Name name, List<Operators.OperatorType> formals, Operators.OperatorType res, int... opcodes) Creates an operator symbol.
private int	mergeOpcodes(int... opcodes) Fold two opcodes in a single int value (if required).
public Name	operatorName(JCTree.Tag tag) Return name of operator with given tree tag.
private Symbol.OperatorSymbol	reportErrorIfNeeded(JCDiagnostic.DiagnosticPosition pos, JCTree.Tag tag, Type... args) Report an operator lookup error.
private <O> Symbol.OperatorSymbol	resolve(JCTree.Tag tag, Map<Name, List<O>> opMap, Predicate<O> opTestFunc, Function<O, Symbol.OperatorSymbol> resolveFunc, Supplier<Symbol.OperatorSymbol> noResultFunc) Main operator lookup routine; lookup an operator (either unary or binary) in its corresponding map.
pack-priv Symbol.OperatorSymbol	resolveBinary(JCDiagnostic.DiagnosticPosition pos, JCTree.Tag tag, Type op1, Type op2) Entry point for resolving a binary operator given an operator tag and a pair of argument types.
pack-priv Symbol.OperatorSymbol	resolveUnary(JCDiagnostic.DiagnosticPosition pos, JCTree.Tag tag, Type op) Entry point for resolving a unary operator given an operator tag and an argument type.
private void	setOperatorName(JCTree.Tag tag, String name)
private void	setOperatorName(JCTree.Tag tag, Name name)
pack-priv Type	unaryPromotion(Type t) Perform unary promotion of a type; this routine implements JLS 5.6.1.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait