public void atVariable(Variable v) throws CompileError {
Declarator d = v.getDeclarator();
exprType = d.getType();
arrayDim = d.getArrayDim();
className = d.getClassName();
int var = getLocalVar(d);
if (arrayDim > 0) bytecode.addAload(var);
else
switch (exprType) {
case CLASS:
bytecode.addAload(var);
break;
case LONG:
bytecode.addLload(var);
break;
case FLOAT:
bytecode.addFload(var);
break;
case DOUBLE:
bytecode.addDload(var);
break;
default: // BOOLEAN, BYTE, CHAR, SHORT, INT
bytecode.addIload(var);
break;
}
}
/* op is either =, %=, &=, *=, /=, +=, -=, ^=, |=, <<=, >>=, or >>>=.
*
* expr and var can be null.
*/
private void atVariableAssign(
Expr expr, int op, Variable var, Declarator d, ASTree right, boolean doDup)
throws CompileError {
int varType = d.getType();
int varArray = d.getArrayDim();
String varClass = d.getClassName();
int varNo = getLocalVar(d);
if (op != '=') atVariable(var);
// expr is null if the caller is atDeclarator().
if (expr == null && right instanceof ArrayInit)
atArrayVariableAssign((ArrayInit) right, varType, varArray, varClass);
else atAssignCore(expr, op, right, varType, varArray, varClass);
if (doDup)
if (is2word(varType, varArray)) bytecode.addOpcode(DUP2);
else bytecode.addOpcode(DUP);
if (varArray > 0) bytecode.addAstore(varNo);
else if (varType == DOUBLE) bytecode.addDstore(varNo);
else if (varType == FLOAT) bytecode.addFstore(varNo);
else if (varType == LONG) bytecode.addLstore(varNo);
else if (isRefType(varType)) bytecode.addAstore(varNo);
else bytecode.addIstore(varNo);
exprType = varType;
arrayDim = varArray;
className = varClass;
}
public void setPackage(String s) {
s = parser.pack_replace(s);
type_spec.setPackage(s);
for (Enumeration e = declarators.v.elements(); e.hasMoreElements(); ) {
Declarator d = (Declarator) e.nextElement();
d.setPackage(s);
}
}
protected int getLocalVar(Declarator d) {
int v = d.getLocalVar();
if (v < 0) {
v = getMaxLocals(); // delayed variable allocation.
d.setLocalVar(v);
incMaxLocals(1);
}
return v;
}
public void member_print(PrintWriter ps, String prefix) {
/* only print members that are not interfaces */
if (type_spec.typeSpec() instanceof ConstrTypeSpec
&& !(((ConstrTypeSpec) type_spec.typeSpec()).c_type_spec.declaration()
instanceof Interface)
|| type_spec.typeSpec() instanceof SequenceType
|| type_spec.typeSpec() instanceof ArrayTypeSpec) {
type_spec.print(ps);
}
if (type_spec.typeSpec() instanceof StringType)
ps.print(prefix + type_spec.toString() + " " + declarator.toString() + " = \"\";");
else ps.print(prefix + type_spec.toString() + " " + declarator.toString() + ";");
}
@Override
public void getCode(CodeGenerator codeGenerator) {
IType type = getVariableType().getType();
CompilationUnit compilationUnit = codeGenerator.getCompilationUnit();
compilationUnit.importType(type);
String typeName = type.getJavaName();
String declaration = typeName + " " + declarator.getName();
if (type.isPrimary()) {
String throwableName = compilationUnit.createUniqueName();
codeGenerator.append("catch(java.lang.Throwable " + throwableName + ") {");
codeGenerator.breakLine().incrementIndent().indent();
codeGenerator.append(declaration + " = new " + typeName + "(" + throwableName + ");");
codeGenerator.breakLine().indent();
statement.getCode(codeGenerator);
codeGenerator.decrementIndent().indent().append('}').breakLine();
} else {
codeGenerator.append("catch(" + declaration + ")").breakLine().indent();
statement.getCode(codeGenerator);
}
}
@Override
public boolean resolveTypes(CompilationUnit compilationUnit, IType declaringType) {
if (!super.resolveTypes(compilationUnit, declaringType)) return false;
declarator.resolveTypes(compilationUnit, declaringType);
statement.resolveTypes(compilationUnit, declaringType);
return true;
}
@Override
public boolean checkSemantics(
CompilationUnit compilationUnit,
IType declaringType,
IMethod declaringMethod,
IVariable leftHandValue,
IVariableType context) {
if (!super.checkSemantics(compilationUnit, declaringType, declaringMethod, null, null))
return false;
declaringMethod.openLocalScope();
if (declarator != null)
declarator.checkSemantics(compilationUnit, declaringType, declaringMethod, null, null);
IType exceptionType = Primary.resolveType(compilationUnit, Primary.Exception);
if (exceptionType != null) {
IVariableType variableType = declarator.getVariableType();
ITypeCast typeCast = variableType.getCastTo(exceptionType);
if (typeCast == null || typeCast.getOperator() != null)
setError(
declarator.getPosition(),
"Type mismatch: cannot convert from "
+ variableType.getSignature()
+ " to "
+ exceptionType.getUserName());
}
if (statement != null)
statement.checkSemantics(compilationUnit, declaringType, declaringMethod, null, null);
declaringMethod.closeLocalScope();
return true;
}
public void open() {
try {
connection = createConnection();
channel = connection.createChannel();
if (prefetchCount > 0) {
logger.info("setting basic.qos / prefetch count to " + prefetchCount + " for " + queueName);
channel.basicQos(prefetchCount);
}
// run any declaration prior to queue consumption
declarator.execute(channel);
consumer = new QueueingConsumer(channel);
consumerTag = channel.basicConsume(queueName, isAutoAcking(), consumer);
} catch (Exception e) {
reset();
logger.error("could not open listener on queue " + queueName);
reporter.reportError(e);
}
}
public void atDeclarator(Declarator d) throws CompileError {
d.setLocalVar(getMaxLocals());
d.setClassName(resolveClassName(d.getClassName()));
int size;
if (is2word(d.getType(), d.getArrayDim())) size = 2;
else size = 1;
incMaxLocals(size);
/* NOTE: Array initializers has not been supported.
*/
ASTree init = d.getInitializer();
if (init != null) {
doTypeCheck(init);
atVariableAssign(null, '=', null, d, init, false);
}
}
public void visitDeclarator(Declarator declarator) {
visitModifiableElement(declarator);
visit(declarator.getDefaultValue());
}
public CtClass lookupClass(Declarator decl) throws CompileError {
return lookupClass(decl.getType(), decl.getArrayDim(), decl.getClassName());
}
public CtClass lookupClassByName(ASTList name) throws CompileError {
return lookupClass(Declarator.astToClassName(name, '.'), false);
}
/** Parsing members means creating new members for definitions with more than one declarator. */
public void parse() {
boolean clone_and_parse = true;
if (extendVector == null) throw new RuntimeException("Compiler Error: extendVector not set!");
if (type_spec.typeSpec() instanceof ScopedName) {
token = type_spec.typeSpec().get_token();
type_spec = ((ScopedName) type_spec.typeSpec()).resolvedTypeSpec();
clone_and_parse = false;
if (type_spec instanceof ConstrTypeSpec) {
if (((ConstrTypeSpec) type_spec.typeSpec()).c_type_spec instanceof StructType) {
// System.out.println("Struct " + containing_struct.typeName() + " contains struct " +
// ((ConstrTypeSpec)type_spec.typeSpec()).typeName());
if (((ConstrTypeSpec) type_spec.typeSpec())
.c_type_spec
.typeName()
.equals(containing_struct.typeName())) {
parser.fatal_error(
"Illegal recursion in struct (use sequence<"
+ containing_struct.typeName()
+ "> instead)",
token);
}
}
}
} else if (type_spec.typeSpec() instanceof SequenceType) {
TypeSpec ts = ((SequenceType) type_spec.typeSpec()).elementTypeSpec().typeSpec();
SequenceType seqTs = (SequenceType) type_spec.typeSpec();
while (ts instanceof SequenceType) {
seqTs = (SequenceType) ts;
ts = ((SequenceType) ts.typeSpec()).elementTypeSpec().typeSpec();
}
// if( ts.typeName().equals( containing_struct.typeName()) ||
if (ScopedName.isRecursionScope(ts.typeName())) {
seqTs.setRecursive();
}
} else if (type_spec instanceof ConstrTypeSpec) {
type_spec.parse();
}
for (Enumeration e = declarators.v.elements(); e.hasMoreElements(); ) {
Declarator d = (Declarator) e.nextElement();
// we don't parse the declarator itself
// as that would result in its name getting defined
// we define the declarator's name as a type name indirectly
// through the cloned type specs.
Member m = new Member(new_num());
m.declarator = d;
TypeSpec ts = type_spec.typeSpec();
/* create a separate type spec copy for every declarator
if the type spec is a new type definition, i.e. a
struct, enum, union, sequence or the declarator is
an array declarator
*/
// if( clone_and_parse && !(ts instanceof BaseType) )
if (clone_and_parse || d.d instanceof ArrayDeclarator) {
/* arrays need special treatment */
if (d.d instanceof ArrayDeclarator) {
ts = new ArrayTypeSpec(new_num(), ts, (ArrayDeclarator) d.d, pack_name);
ts.parse();
} else if (!(ts instanceof BaseType)) {
ts = (TypeSpec) ts.clone();
if (!(ts instanceof ConstrTypeSpec)) ts.set_name(d.name());
/* important: only parse type specs once (we do it for the last
declarator only) */
if (!e.hasMoreElements()) ts.parse();
}
}
// else
if (!(d.d instanceof ArrayDeclarator)) {
try {
NameTable.define(containing_struct + "." + d.name(), "declarator");
} catch (NameAlreadyDefined nad) {
parser.error("Declarator " + d.name() + " already defined in scope.", token);
}
}
/* if the type spec is a scoped name, it is already parsed and
* the type name is defined
*/
// if( clone_and_parse )
// ts.parse();
m.type_spec = ts;
m.pack_name = this.pack_name;
m.name = this.name;
extendVector.addElement(m);
}
declarators = null;
}
public boolean catchesAll() {
return declarator.getVariableType().getType().isPrimary();
}
private void atPlusPlus(int token, ASTree oprand, Expr expr, boolean doDup) throws CompileError {
boolean isPost = oprand == null; // ++i or i++?
if (isPost) oprand = expr.oprand2();
if (oprand instanceof Variable) {
Declarator d = ((Variable) oprand).getDeclarator();
int t = exprType = d.getType();
arrayDim = d.getArrayDim();
int var = getLocalVar(d);
if (arrayDim > 0) badType(expr);
if (t == DOUBLE) {
bytecode.addDload(var);
if (doDup && isPost) bytecode.addOpcode(DUP2);
bytecode.addDconst(1.0);
bytecode.addOpcode(token == PLUSPLUS ? DADD : DSUB);
if (doDup && !isPost) bytecode.addOpcode(DUP2);
bytecode.addDstore(var);
} else if (t == LONG) {
bytecode.addLload(var);
if (doDup && isPost) bytecode.addOpcode(DUP2);
bytecode.addLconst((long) 1);
bytecode.addOpcode(token == PLUSPLUS ? LADD : LSUB);
if (doDup && !isPost) bytecode.addOpcode(DUP2);
bytecode.addLstore(var);
} else if (t == FLOAT) {
bytecode.addFload(var);
if (doDup && isPost) bytecode.addOpcode(DUP);
bytecode.addFconst(1.0f);
bytecode.addOpcode(token == PLUSPLUS ? FADD : FSUB);
if (doDup && !isPost) bytecode.addOpcode(DUP);
bytecode.addFstore(var);
} else if (t == BYTE || t == CHAR || t == SHORT || t == INT) {
if (doDup && isPost) bytecode.addIload(var);
int delta = token == PLUSPLUS ? 1 : -1;
if (var > 0xff) {
bytecode.addOpcode(WIDE);
bytecode.addOpcode(IINC);
bytecode.addIndex(var);
bytecode.addIndex(delta);
} else {
bytecode.addOpcode(IINC);
bytecode.add(var);
bytecode.add(delta);
}
if (doDup && !isPost) bytecode.addIload(var);
} else badType(expr);
} else {
if (oprand instanceof Expr) {
Expr e = (Expr) oprand;
if (e.getOperator() == ARRAY) {
atArrayPlusPlus(token, isPost, e, doDup);
return;
}
}
atFieldPlusPlus(token, isPost, oprand, expr, doDup);
}
}
@Override
public IVariableType getVariableType() {
return declarator.getVariableType();
}