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/*
* SonarQube Java
* Copyright (C) 2012 SonarSource
* [email protected]
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.java.resolve;
import com.google.common.collect.ImmutableList;
import java.util.Arrays;
/**
* Predefined symbols.
*/
public class Symbols {
final Symbol.PackageSymbol rootPackage;
/**
* Owns all predefined symbols (builtin types, operators).
*/
final Symbol.TypeSymbol predefClass;
/**
* Type, which can't be modelled for the moment.
*/
final Type.ClassType unknownType;
final Symbol.TypeSymbol unknownSymbol;
final Symbol.TypeSymbol arrayClass;
final Symbol.TypeSymbol methodClass;
final Symbol.TypeSymbol noSymbol;
// builtin types
final Type byteType;
final Type charType;
final Type shortType;
final Type intType;
final Type longType;
final Type floatType;
final Type doubleType;
final Type booleanType;
final Type nullType;
// predefined types
final Type objectType;
final Type cloneableType;
final Type serializableType;
final Type classType;
final Type stringType;
public Symbols() {
rootPackage = new Symbol.PackageSymbol("", null);
predefClass = new Symbol.TypeSymbol(Flags.PUBLIC, "", rootPackage);
predefClass.members = new Scope(predefClass);
((Type.ClassType) predefClass.type).interfaces = ImmutableList.of();
unknownSymbol = new Symbol.TypeSymbol(Flags.PUBLIC, /* TODO name */"", rootPackage);
unknownSymbol.members = new Scope(unknownSymbol);
unknownType = new Type.ClassType(unknownSymbol) {
@Override
public String toString() {
return "!unknown!";
}
};
unknownType.interfaces = ImmutableList.of();
unknownSymbol.type = unknownType;
// TODO should have type "noType":
noSymbol = new Symbol.TypeSymbol(0, "", rootPackage);
methodClass = new Symbol.TypeSymbol(Flags.PUBLIC, "", noSymbol);
// builtin types
byteType = initType(Type.BYTE, "byte");
charType = initType(Type.CHAR, "char");
shortType = initType(Type.SHORT, "short");
intType = initType(Type.INT, "int");
longType = initType(Type.LONG, "long");
floatType = initType(Type.FLOAT, "float");
doubleType = initType(Type.DOUBLE, "double");
booleanType = initType(Type.BOOLEAN, "boolean");
nullType = initType(Type.BOT, "");
// predefined types
objectType = enterClass("java.lang.Object");
classType = enterClass("java.lang.Class");
stringType = enterClass("java.lang.String");
cloneableType = enterClass("java.lang.Cloneable");
serializableType = enterClass("java.io.Serializable");
// TODO comment me
arrayClass = new Symbol.TypeSymbol(Flags.PUBLIC, "Array", noSymbol);
Type.ClassType arrayClassType = (Type.ClassType) arrayClass.type;
arrayClassType.supertype = objectType;
arrayClassType.interfaces = ImmutableList.of(cloneableType, serializableType);
arrayClass.members = new Scope(arrayClass);
arrayClass.members().enter(new Symbol.VariableSymbol(Flags.PUBLIC | Flags.FINAL, "length", intType, arrayClass));
// TODO arrayClass implements clone() method
enterOperators();
}
private Type enterClass(String name) {
// TODO use BytecodeCompleter
Symbol.TypeSymbol symbol = new Symbol.TypeSymbol(Flags.PUBLIC, name.substring(name.lastIndexOf('.') + 1, name.length()), /* FIXME */ rootPackage);
symbol.members = new Scope(symbol);
((Type.ClassType) symbol.type).interfaces = ImmutableList.of();
return symbol.type;
}
/**
* Registers builtin types as symbols, so that they can be found as an usual identifiers.
*/
private Type initType(int tag, String name) {
Symbol.TypeSymbol symbol = new Symbol.TypeSymbol(Flags.PUBLIC, name, rootPackage);
symbol.members = new Scope(symbol);
predefClass.members.enter(symbol);
((Type.ClassType) symbol.type).interfaces = ImmutableList.of();
symbol.type.tag = tag;
return symbol.type;
}
/**
* Registers operators as methods, so that they can be found as an usual methods.
*/
private void enterOperators() {
for (String op : new String[]{"+", "-", "*", "/", "%"}) {
for (Type type : Arrays.asList(doubleType, floatType, longType, intType)) {
enterBinop(op, type, type, type);
}
}
for (String op : new String[]{"&", "|", "^"}) {
for (Type type : Arrays.asList(booleanType, longType, intType)) {
enterBinop(op, type, type, type);
}
}
for (String op : new String[]{"<<", ">>", ">>>"}) {
enterBinop(op, longType, longType, longType);
enterBinop(op, intType, longType, intType);
enterBinop(op, longType, intType, longType);
enterBinop(op, intType, intType, intType);
}
for (String op : new String[]{"<", ">", ">=", "<="}) {
for (Type type : Arrays.asList(doubleType, floatType, longType, intType)) {
enterBinop(op, type, type, booleanType);
}
}
for (String op : new String[]{"==", "!="}) {
for (Type type : Arrays.asList(objectType, booleanType, doubleType, floatType, longType, intType)) {
enterBinop(op, type, type, booleanType);
}
}
enterBinop("&&", booleanType, booleanType, booleanType);
enterBinop("||", booleanType, booleanType, booleanType);
// string concatenation
for (Type type : Arrays.asList(nullType, objectType, booleanType, doubleType, floatType, longType, intType)) {
enterBinop("+", stringType, type, stringType);
enterBinop("+", type, stringType, stringType);
}
enterBinop("+", stringType, stringType, stringType);
}
private void enterBinop(String name, Type left, Type right, Type result) {
Type type = new Type.MethodType(ImmutableList.of(left, right), result, ImmutableList.of(), methodClass);
Symbol symbol = new Symbol.MethodSymbol(Flags.PUBLIC | Flags.STATIC, name, type, predefClass);
predefClass.members.enter(symbol);
}
}
