protected final void addSpecialsBefore(SimpleNode from, SimpleNode to) {
if (from.specialsBefore != null && from.specialsBefore.size() > 0) {
to.getSpecialsBefore().addAll(from.specialsBefore);
}
if (from.specialsAfter != null && from.specialsAfter.size() > 0) {
to.getSpecialsBefore().addAll(from.specialsAfter);
}
}
public final SimpleNode onCloseNode(SimpleNode n, int arity) throws Exception {
exprType value;
exprType[] exprs;
Suite orelseSuite;
stmtType[] body;
Suite suite;
int l;
switch (n.getId()) {
case JJTEXPR_STMT:
value = (exprType) stack.popNode();
if (arity > 1) {
exprs = makeExprs(arity - 1);
ctx.setStore(exprs);
return new Assign(exprs, value);
} else {
return new Expr(value);
}
case JJTINDEX_OP:
sliceType slice = (sliceType) stack.popNode();
value = (exprType) stack.popNode();
return new Subscript(value, slice, Subscript.Load);
case JJTPRINT_STMT:
boolean nl = true;
if (stack.nodeArity() == 0) {
Print p = new Print(null, null, true);
return p;
}
if (stack.peekNode().getId() == JJTCOMMA) {
stack.popNode();
nl = false;
}
Print p = new Print(null, makeExprs(), nl);
return p;
case JJTPRINTEXT_STMT:
nl = true;
if (stack.peekNode().getId() == JJTCOMMA) {
stack.popNode();
nl = false;
}
exprs = makeExprs(stack.nodeArity() - 1);
p = new Print(((exprType) stack.popNode()), exprs, nl);
return p;
case JJTBEGIN_FOR_ELSE_STMT:
return new Suite(null);
case JJTBEGIN_ELSE_STMT:
return new Suite(null);
case JJTBEGIN_WHILE_STMT:
return new While(null, null, null);
case JJTWHILE_STMT:
orelseSuite = null;
if (stack.nodeArity() == 5) {
orelseSuite = popSuiteAndSuiteType();
}
body = popSuite();
exprType test = (exprType) stack.popNode();
While w = (While) stack.popNode();
w.test = test;
w.body = body;
w.orelse = orelseSuite;
return w;
case JJTDECORATED:
if (stack.nodeArity() != 2) {
throw new RuntimeException("Expected 2 nodes at this context, found: " + arity);
}
SimpleNode def = stack.popNode();
Decorators decorators = (Decorators) stack.popNode();
if (def instanceof ClassDef) {
ClassDef classDef = (ClassDef) def;
classDef.decs = decorators.exp;
} else {
FunctionDef fDef = (FunctionDef) def;
fDef.decs = decorators.exp;
}
return def;
case JJTCALL_OP:
exprType starargs = null;
exprType kwargs = null;
java.util.List<exprType> args = new ArrayList<exprType>();
java.util.List<keywordType> keywords = new ArrayList<keywordType>();
for (int i = arity - 2; i >= 0; i--) {
SimpleNode node = stack.popNode();
if (node instanceof keywordType) {
keywords.add(0, (keywordType) node);
} else if (node.getId() == JJTEXTRAARGVALUELIST) {
ExtraArgValue nstarargs = (ExtraArgValue) node;
starargs = nstarargs.value;
this.addSpecialsAndClearOriginal(nstarargs, starargs);
} else if (node.getId() == JJTEXTRAKEYWORDVALUELIST) {
ExtraArgValue nkwargs = (ExtraArgValue) node;
kwargs = nkwargs.value;
this.addSpecialsAndClearOriginal(nkwargs, kwargs);
} else if (node instanceof ComprehensionCollection) {
// what can happen is something like print sum(x for x in y), where we have already
// passed x in the args, and then get 'for x in y'
args.add(
0,
new ListComp(
(exprType) stack.popNode(),
((ComprehensionCollection) node).getGenerators(),
ListComp.EmptyCtx));
i--; // popped node
} else {
args.add(0, (exprType) node);
}
}
exprType func = (exprType) stack.popNode();
Call c =
new Call(
func,
args.toArray(new exprType[args.size()]),
keywords.toArray(new keywordType[keywords.size()]),
starargs,
kwargs);
addSpecialsAndClearOriginal(n, c);
return c;
case JJTFUNCDEF:
suite = (Suite) stack.popNode();
body = suite.body;
argumentsType arguments = makeArguments(stack.nodeArity() - 1);
NameTok nameTok = makeName(NameTok.FunctionName);
// decorator is always null at this point... it's decorated later on
FunctionDef funcDef = new FunctionDef(nameTok, arguments, body, null, null);
addSpecialsAndClearOriginal(suite, funcDef);
setParentForFuncOrClass(body, funcDef);
return funcDef;
case JJTDEFAULTARG:
value = (arity == 1) ? null : ((exprType) stack.popNode());
return new DefaultArg(((exprType) stack.popNode()), value, n.getId());
case JJTEXTRAARGLIST:
return new ExtraArg(makeName(NameTok.VarArg), JJTEXTRAARGLIST);
case JJTEXTRAKEYWORDLIST:
return new ExtraArg(makeName(NameTok.KwArg), JJTEXTRAKEYWORDLIST);
case JJTCLASSDEF:
suite = (Suite) stack.popNode();
body = suite.body;
exprType[] bases = makeExprs(stack.nodeArity() - 1);
nameTok = makeName(NameTok.ClassName);
ClassDef classDef = new ClassDef(nameTok, bases, body, null, null, null, null);
addSpecialsAndClearOriginal(suite, classDef);
setParentForFuncOrClass(body, classDef);
return classDef;
case JJTBEGIN_RETURN_STMT:
return new Return(null);
case JJTRETURN_STMT:
value = arity == 2 ? ((exprType) stack.popNode()) : null;
Return ret = (Return) stack.popNode();
ret.value = value;
return ret;
case JJTYIELD_STMT:
return stack.popNode();
case JJTYIELD_EXPR:
exprType yieldExpr = null;
if (arity > 0) {
// we may have an empty yield, so, we have to check it before
yieldExpr = (exprType) stack.popNode();
}
return new Yield(yieldExpr, false);
case JJTRAISE_STMT:
exprType tback = arity >= 3 ? ((exprType) stack.popNode()) : null;
exprType inst = arity >= 2 ? ((exprType) stack.popNode()) : null;
exprType type = arity >= 1 ? ((exprType) stack.popNode()) : null;
return new Raise(type, inst, tback, null);
case JJTGLOBAL_STMT:
Global global = new Global(makeIdentifiers(NameTok.GlobalName), null);
return global;
case JJTASSERT_STMT:
exprType msg = arity == 2 ? ((exprType) stack.popNode()) : null;
test = (exprType) stack.popNode();
return new Assert(test, msg);
case JJTBEGIN_TRY_STMT:
// we do that just to get the specials
return new TryExcept(null, null, null);
case JJTTRYELSE_STMT:
orelseSuite = popSuiteAndSuiteType();
return orelseSuite;
case JJTTRYFINALLY_OUTER_STMT:
orelseSuite = popSuiteAndSuiteType();
return new TryFinally(
null,
orelseSuite); // it does not have a body at this time... it will be filled with the
// inner try..except
case JJTTRY_STMT:
TryFinally outer = null;
if (stack.peekNode() instanceof TryFinally) {
outer = (TryFinally) stack.popNode();
arity--;
}
orelseSuite = null;
if (stack.peekNode() instanceof suiteType) {
orelseSuite = (Suite) stack.popNode();
arity--;
}
l = arity;
excepthandlerType[] handlers = new excepthandlerType[l];
for (int i = l - 1; i >= 0; i--) {
handlers[i] = (excepthandlerType) stack.popNode();
}
suite = (Suite) stack.popNode();
TryExcept tryExc = (TryExcept) stack.popNode();
if (outer != null) {
outer.beginLine = tryExc.beginLine;
}
tryExc.body = suite.body;
tryExc.handlers = handlers;
tryExc.orelse = orelseSuite;
addSpecials(suite, tryExc);
if (outer == null) {
return tryExc;
} else {
if (outer.body != null) {
throw new RuntimeException(
"Error. Expecting null body to be filled on try..except..finally");
}
outer.body = new stmtType[] {tryExc};
return outer;
}
case JJTBEGIN_TRY_ELSE_STMT:
// we do that just to get the specials
return new Suite(null);
case JJTBEGIN_EXCEPT_CLAUSE:
return new excepthandlerType(null, null, null);
case JJTEXCEPT_CLAUSE:
suite = (Suite) stack.popNode();
body = suite.body;
exprType excname = arity == 4 ? ((exprType) stack.popNode()) : null;
if (excname != null) {
ctx.setStore(excname);
}
type = arity >= 3 ? ((exprType) stack.popNode()) : null;
excepthandlerType handler = (excepthandlerType) stack.popNode();
handler.type = type;
handler.name = excname;
handler.body = body;
addSpecials(suite, handler);
return handler;
case JJTBEGIN_FINALLY_STMT:
// we do that just to get the specials
return new Suite(null);
case JJTTRYFINALLY_STMT:
suiteType finalBody = popSuiteAndSuiteType();
body = popSuite();
// We have a try..except in the stack, but we will change it for a try..finally
// This is because we recognize a try..except in the 'try:' token, but actually end up with
// a try..finally
TryExcept tryExcept = (TryExcept) stack.popNode();
TryFinally tryFinally = new TryFinally(body, finalBody);
tryFinally.beginLine = tryExcept.beginLine;
tryFinally.beginColumn = tryExcept.beginColumn;
addSpecialsAndClearOriginal(tryExcept, tryFinally);
return tryFinally;
case JJTWITH_STMT:
return makeWithStmt(arity);
case JJTWITH_ITEM:
return makeWithItem(arity);
case JJTEXTRAKEYWORDVALUELIST:
return new ExtraArgValue(((exprType) stack.popNode()), JJTEXTRAKEYWORDVALUELIST);
case JJTEXTRAARGVALUELIST:
return new ExtraArgValue(((exprType) stack.popNode()), JJTEXTRAARGVALUELIST);
case JJTKEYWORD:
value = (exprType) stack.popNode();
nameTok = makeName(NameTok.KeywordName);
return new keywordType(nameTok, value, false);
case JJTTUPLE:
if (stack.nodeArity() > 0) {
SimpleNode peeked = stack.peekNode();
if (peeked instanceof ComprehensionCollection) {
ComprehensionCollection col = (ComprehensionCollection) stack.popNode();
return new ListComp(
((exprType) stack.popNode()), col.getGenerators(), ListComp.TupleCtx);
}
}
return makeTuple(n);
case JJTLIST:
if (stack.nodeArity() > 0 && stack.peekNode() instanceof ComprehensionCollection) {
ComprehensionCollection col = (ComprehensionCollection) stack.popNode();
return new ListComp(((exprType) stack.popNode()), col.getGenerators(), ListComp.ListCtx);
}
return new List(makeExprs(), List.Load);
case JJTSET:
return new Set(null);
case JJTDICTIONARY:
return makeDictionaryOrSet(arity);
case JJTSTR_1OP:
return new Repr(((exprType) stack.popNode()));
case JJTTEST:
if (arity == 2) {
IfExp node = (IfExp) stack.popNode();
node.body = (exprType) stack.popNode();
return node;
} else {
return stack.popNode();
}
case JJTIF_EXP:
exprType ifExprOrelse = (exprType) stack.popNode();
exprType ifExprTest = (exprType) stack.popNode();
return new IfExp(ifExprTest, null, ifExprOrelse);
case JJTOLD_LAMBDEF:
case JJTLAMBDEF:
test = (exprType) stack.popNode();
arguments = makeArguments(arity - 1);
Lambda lambda = new Lambda(arguments, test);
// if(arguments == null || arguments.args == null || arguments.args.length == 0){
// lambda.getSpecialsBefore().add("lambda");
// }else{
// lambda.getSpecialsBefore().add("lambda ");
// }
return lambda;
case JJTELLIPSIS:
return new Ellipsis();
case JJTSLICE:
SimpleNode[] arr = new SimpleNode[arity];
for (int i = arity - 1; i >= 0; i--) {
arr[i] = stack.popNode();
}
exprType[] values = new exprType[3];
int k = 0;
java.util.List<Object> specialsBefore = new ArrayList<Object>();
java.util.List<Object> specialsAfter = new ArrayList<Object>();
for (int j = 0; j < arity; j++) {
if (arr[j].getId() == JJTCOLON) {
if (arr[j].specialsBefore != null) {
specialsBefore.addAll(arr[j].specialsBefore);
arr[j].specialsBefore
.clear(); // this nodes may be reused among parses, so, we have to erase the
// specials
}
if (arr[j].specialsAfter != null) {
specialsAfter.addAll(arr[j].specialsAfter);
arr[j].specialsAfter.clear();
}
k++;
} else {
values[k] = (exprType) arr[j];
if (specialsBefore.size() > 0) {
values[k].getSpecialsBefore().addAll(specialsBefore);
specialsBefore.clear();
}
if (specialsAfter.size() > 0) {
values[k].getSpecialsBefore().addAll(specialsAfter);
specialsAfter.clear();
}
}
}
SimpleNode sliceRet;
if (k == 0) {
sliceRet = new Index(values[0]);
} else {
sliceRet = new Slice(values[0], values[1], values[2]);
}
// this may happen if we have no values
sliceRet.getSpecialsBefore().addAll(specialsBefore);
sliceRet.getSpecialsAfter().addAll(specialsAfter);
specialsBefore.clear();
specialsAfter.clear();
return sliceRet;
case JJTCOMP_FOR:
return makeCompFor(arity);
case JJTIMPORTFROM:
return makeImportFrom25Onwards(arity);
default:
Log.log(("Error at TreeBuilder: default not treated:" + n.getId()));
return null;
}
}