/**
* Enter a binary operation into symbol table.
*
* @param name The name of the operator.
* @param left The type of the left operand.
* @param right The type of the left operand.
* @param res The operation's result type.
* @param opcode The operation's bytecode instruction.
*/
private void enterBinop(String name, Type left, Type right, Type res, int opcode) {
predefClass
.members()
.enter(
new OperatorSymbol(
names.fromString(name),
new MethodType(List.make(left, right), res, Type.emptyList, methodClass),
opcode,
predefClass));
}
/**
* Enter a unary operation into symbol table.
*
* @param name The name of the operator.
* @param arg The type of the operand.
* @param res The operation's result type.
* @param opcode The operation's bytecode instruction.
*/
private OperatorSymbol enterUnop(String name, Type arg, Type res, int opcode) {
OperatorSymbol sym =
new OperatorSymbol(
names.fromString(name),
new MethodType(List.make(arg), res, Type.emptyList, methodClass),
opcode,
predefClass);
predefClass.members().enter(sym);
return sym;
}
/** Constructor; enters all predefined identifiers and operators into symbol table. */
private Symtab(Context context) throws CompletionFailure {
super();
context.put(symtabKey, this);
names = Name.Table.instance(context);
byteType = new Type(TypeTags.BYTE, null);
charType = new Type(TypeTags.CHAR, null);
shortType = new Type(TypeTags.SHORT, null);
intType = new Type(TypeTags.INT, null);
longType = new Type(TypeTags.LONG, null);
floatType = new Type(TypeTags.FLOAT, null);
doubleType = new Type(TypeTags.DOUBLE, null);
booleanType = new Type(TypeTags.BOOLEAN, null);
voidType = new Type(TypeTags.VOID, null);
botType = new Type(TypeTags.BOT, null);
unknownType =
new Type(TypeTags.UNKNOWN, null) {
public boolean isSameType(Type that) {
return true;
}
public boolean isSubType(Type that) {
return false;
}
public boolean isSuperType(Type that) {
return true;
}
};
rootPackage = new PackageSymbol(names.empty, null);
emptyPackage = new PackageSymbol(names.emptyPackage, rootPackage);
noSymbol = new TypeSymbol(0, names.empty, Type.noType, rootPackage);
noSymbol.kind = Kinds.NIL;
errSymbol = new ClassSymbol(PUBLIC | STATIC, names.any, null, rootPackage);
errType = new ErrorType(errSymbol);
initType(byteType, "byte", "Byte");
initType(shortType, "short", "Short");
initType(charType, "char", "Character");
initType(intType, "int", "Integer");
initType(longType, "long", "Long");
initType(floatType, "float", "Float");
initType(doubleType, "double", "Double");
initType(booleanType, "boolean", "Boolean");
initType(voidType, "void", "Void");
initType(botType, "<nulltype>");
initType(errType, errSymbol);
initType(unknownType, "<any?>");
arrayClass = new ClassSymbol(PUBLIC, names.Array, noSymbol);
methodClass = new ClassSymbol(PUBLIC, names.Method, noSymbol);
predefClass = new ClassSymbol(PUBLIC, names.empty, rootPackage);
Scope scope = new Scope(predefClass);
predefClass.members_field = scope;
scope.enter(byteType.tsym);
scope.enter(shortType.tsym);
scope.enter(charType.tsym);
scope.enter(intType.tsym);
scope.enter(longType.tsym);
scope.enter(floatType.tsym);
scope.enter(doubleType.tsym);
scope.enter(booleanType.tsym);
scope.enter(errType.tsym);
classes.put(predefClass.fullname, predefClass);
reader = ClassReader.instance(context);
reader.init(this);
objectType = enterClass("java.lang.Object");
classType = enterClass("java.lang.Class");
stringType = enterClass("java.lang.String");
stringBufferType = enterClass("java.lang.StringBuffer");
cloneableType = enterClass("java.lang.Cloneable");
throwableType = enterClass("java.lang.Throwable");
serializableType = enterClass("java.io.Serializable");
errorType = enterClass("java.lang.Error");
exceptionType = enterClass("java.lang.Exception");
runtimeExceptionType = enterClass("java.lang.RuntimeException");
classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException");
noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError");
assertionErrorType = enterClass("java.lang.AssertionError");
classLoaderType = enterClass("java.lang.ClassLoader");
ClassType arrayClassType = (ClassType) arrayClass.type;
arrayClassType.supertype_field = objectType;
arrayClassType.interfaces_field = List.make(cloneableType, serializableType);
arrayClass.members_field = new Scope(arrayClass);
lengthVar = new VarSymbol(PUBLIC | FINAL, names.length, intType, arrayClass);
arrayClass.members().enter(lengthVar);
Symbol cloneMethod =
new MethodSymbol(
PUBLIC,
names.clone,
new MethodType(Type.emptyList, objectType, Type.emptyList, methodClass),
arrayClass);
arrayClass.members().enter(cloneMethod);
nullConst = enterConstant("null", botType);
trueConst = enterConstant("true", booleanType.constType(new Integer(1)));
falseConst = enterConstant("false", booleanType.constType(new Integer(0)));
enterUnop("+", intType, intType, nop);
enterUnop("+", longType, longType, nop);
enterUnop("+", floatType, floatType, nop);
enterUnop("+", doubleType, doubleType, nop);
enterUnop("-", intType, intType, ineg);
enterUnop("-", longType, longType, lneg);
enterUnop("-", floatType, floatType, fneg);
enterUnop("-", doubleType, doubleType, dneg);
enterUnop("~", intType, intType, ixor);
enterUnop("~", longType, longType, lxor);
enterUnop("++", byteType, byteType, iadd);
enterUnop("++", shortType, shortType, iadd);
enterUnop("++", charType, charType, iadd);
enterUnop("++", intType, intType, iadd);
enterUnop("++", longType, longType, ladd);
enterUnop("++", floatType, floatType, fadd);
enterUnop("++", doubleType, doubleType, dadd);
enterUnop("--", byteType, byteType, isub);
enterUnop("--", shortType, shortType, isub);
enterUnop("--", charType, charType, isub);
enterUnop("--", intType, intType, isub);
enterUnop("--", longType, longType, lsub);
enterUnop("--", floatType, floatType, fsub);
enterUnop("--", doubleType, doubleType, dsub);
enterUnop("!", booleanType, booleanType, bool_not);
nullcheck = enterUnop("<*nullchk*>", objectType, objectType, nullchk);
enterBinop("+", stringType, stringType, stringType, string_add);
enterBinop("+", stringType, intType, stringType, string_add);
enterBinop("+", stringType, longType, stringType, string_add);
enterBinop("+", stringType, floatType, stringType, string_add);
enterBinop("+", stringType, doubleType, stringType, string_add);
enterBinop("+", stringType, booleanType, stringType, string_add);
enterBinop("+", stringType, objectType, stringType, string_add);
enterBinop("+", stringType, botType, stringType, string_add);
enterBinop("+", intType, stringType, stringType, string_add);
enterBinop("+", longType, stringType, stringType, string_add);
enterBinop("+", floatType, stringType, stringType, string_add);
enterBinop("+", doubleType, stringType, stringType, string_add);
enterBinop("+", booleanType, stringType, stringType, string_add);
enterBinop("+", objectType, stringType, stringType, string_add);
enterBinop("+", botType, stringType, stringType, string_add);
enterBinop("+", intType, intType, intType, iadd);
enterBinop("+", longType, longType, longType, ladd);
enterBinop("+", floatType, floatType, floatType, fadd);
enterBinop("+", doubleType, doubleType, doubleType, dadd);
enterBinop("+", botType, botType, botType, error);
enterBinop("+", botType, intType, botType, error);
enterBinop("+", botType, longType, botType, error);
enterBinop("+", botType, floatType, botType, error);
enterBinop("+", botType, doubleType, botType, error);
enterBinop("+", botType, booleanType, botType, error);
enterBinop("+", botType, objectType, botType, error);
enterBinop("+", intType, botType, botType, error);
enterBinop("+", longType, botType, botType, error);
enterBinop("+", floatType, botType, botType, error);
enterBinop("+", doubleType, botType, botType, error);
enterBinop("+", booleanType, botType, botType, error);
enterBinop("+", objectType, botType, botType, error);
enterBinop("-", intType, intType, intType, isub);
enterBinop("-", longType, longType, longType, lsub);
enterBinop("-", floatType, floatType, floatType, fsub);
enterBinop("-", doubleType, doubleType, doubleType, dsub);
enterBinop("*", intType, intType, intType, imul);
enterBinop("*", longType, longType, longType, lmul);
enterBinop("*", floatType, floatType, floatType, fmul);
enterBinop("*", doubleType, doubleType, doubleType, dmul);
enterBinop("/", intType, intType, intType, idiv);
enterBinop("/", longType, longType, longType, ldiv);
enterBinop("/", floatType, floatType, floatType, fdiv);
enterBinop("/", doubleType, doubleType, doubleType, ddiv);
enterBinop("%", intType, intType, intType, imod);
enterBinop("%", longType, longType, longType, lmod);
enterBinop("%", floatType, floatType, floatType, fmod);
enterBinop("%", doubleType, doubleType, doubleType, dmod);
enterBinop("&", booleanType, booleanType, booleanType, iand);
enterBinop("&", intType, intType, intType, iand);
enterBinop("&", longType, longType, longType, land);
enterBinop("|", booleanType, booleanType, booleanType, ior);
enterBinop("|", intType, intType, intType, ior);
enterBinop("|", longType, longType, longType, lor);
enterBinop("^", booleanType, booleanType, booleanType, ixor);
enterBinop("^", intType, intType, intType, ixor);
enterBinop("^", longType, longType, longType, lxor);
enterBinop("<<", intType, intType, intType, ishl);
enterBinop("<<", longType, intType, longType, lshl);
enterBinop("<<", intType, longType, intType, ishll);
enterBinop("<<", longType, longType, longType, lshll);
enterBinop(">>", intType, intType, intType, ishr);
enterBinop(">>", longType, intType, longType, lshr);
enterBinop(">>", intType, longType, intType, ishrl);
enterBinop(">>", longType, longType, longType, lshrl);
enterBinop(">>>", intType, intType, intType, iushr);
enterBinop(">>>", longType, intType, longType, lushr);
enterBinop(">>>", intType, longType, intType, iushrl);
enterBinop(">>>", longType, longType, longType, lushrl);
enterBinop("<", intType, intType, booleanType, if_icmplt);
enterBinop("<", longType, longType, booleanType, lcmp, iflt);
enterBinop("<", floatType, floatType, booleanType, fcmpg, iflt);
enterBinop("<", doubleType, doubleType, booleanType, dcmpg, iflt);
enterBinop(">", intType, intType, booleanType, if_icmpgt);
enterBinop(">", longType, longType, booleanType, lcmp, ifgt);
enterBinop(">", floatType, floatType, booleanType, fcmpl, ifgt);
enterBinop(">", doubleType, doubleType, booleanType, dcmpl, ifgt);
enterBinop("<=", intType, intType, booleanType, if_icmple);
enterBinop("<=", longType, longType, booleanType, lcmp, ifle);
enterBinop("<=", floatType, floatType, booleanType, fcmpg, ifle);
enterBinop("<=", doubleType, doubleType, booleanType, dcmpg, ifle);
enterBinop(">=", intType, intType, booleanType, if_icmpge);
enterBinop(">=", longType, longType, booleanType, lcmp, ifge);
enterBinop(">=", floatType, floatType, booleanType, fcmpl, ifge);
enterBinop(">=", doubleType, doubleType, booleanType, dcmpl, ifge);
enterBinop("==", intType, intType, booleanType, if_icmpeq);
enterBinop("==", longType, longType, booleanType, lcmp, ifeq);
enterBinop("==", floatType, floatType, booleanType, fcmpl, ifeq);
enterBinop("==", doubleType, doubleType, booleanType, dcmpl, ifeq);
enterBinop("==", booleanType, booleanType, booleanType, if_icmpeq);
enterBinop("==", objectType, objectType, booleanType, if_acmpeq);
enterBinop("!=", intType, intType, booleanType, if_icmpne);
enterBinop("!=", longType, longType, booleanType, lcmp, ifne);
enterBinop("!=", floatType, floatType, booleanType, fcmpl, ifne);
enterBinop("!=", doubleType, doubleType, booleanType, dcmpl, ifne);
enterBinop("!=", booleanType, booleanType, booleanType, if_icmpne);
enterBinop("!=", objectType, objectType, booleanType, if_acmpne);
enterBinop("&&", booleanType, booleanType, booleanType, bool_and);
enterBinop("||", booleanType, booleanType, booleanType, bool_or);
}
/**
* Enter a constant into symbol table.
*
* @param name The constant's name.
* @param type The constant's type.
*/
private VarSymbol enterConstant(String name, Type type) {
VarSymbol c = new VarSymbol(PUBLIC | STATIC | FINAL, names.fromString(name), type, predefClass);
c.constValue = type.constValue;
predefClass.members().enter(c);
return c;
}