private object GetLevel()
{
RelativeModuleName rmn = _root as RelativeModuleName;
if (rmn != null)
{
return(rmn.DotCount);
}
return(0);
}
// relative_module: "."* module | "."+
private ModuleName ParseRelativeModuleName() {
var start = GetStart();
int dotCount = 0;
while (MaybeEat(TokenKind.Dot)) {
dotCount++;
}
string[] names = ArrayUtils.EmptyStrings;
if (PeekToken() is NameToken) {
names = ReadNames();
}
ModuleName ret;
if (dotCount > 0) {
ret = new RelativeModuleName(names, dotCount);
} else {
if (names.Length == 0) {
ReportSyntaxError(_lookahead.Span.Start, _lookahead.Span.End, "invalid syntax");
}
ret = new ModuleName(names);
}
ret.SetLoc(_globalParent, start, GetEnd());
return ret;
}
// RelativeModuleName
public override bool Walk(RelativeModuleName node)
{
node.Parent = _currentScope;
return(base.Walk(node));
}
public override void PostWalk(RelativeModuleName node)
{
CommonPostWalk(node);
}
public override bool Walk(RelativeModuleName node)
{
CommonWalk(node);
return true;
}
// relative_module: "."* module | "."+
private ModuleName ParseRelativeModuleName() {
SourceLocation start = GetStart();
int dotCount = 0;
while (MaybeEat(TokenKind.Dot)) {
dotCount++;
}
SymbolId[] names = SymbolId.EmptySymbols;
if (PeekToken() is NameToken) {
names = ReadNames();
}
ModuleName ret;
if (dotCount > 0) {
ret = new RelativeModuleName(names, dotCount);
} else {
if (names.Length == 0) {
ReportSyntaxError(_lookahead.Span.Start, _lookahead.Span.End, "invalid syntax");
}
ret = new ModuleName(names);
}
ret.SetLoc(start, GetEnd());
return ret;
}
internal override Statement Revert()
{
ModuleName root = null;
bool absolute = false; // TODO: absolute import appears in ModuleOptions, not sure how it should work together
if (module != null)
if (module[0] == '.') // relative module
root = new RelativeModuleName(module.Split(MODULE_NAME_SPLITTER), level);
else {
root = new ModuleName(module.Split(MODULE_NAME_SPLITTER));
absolute = true;
}
if (names.Count == 1 && ((alias)names[0]).name == "*")
return new FromImportStatement(root, (string[])FromImportStatement.Star, null, false, absolute);
String[] newNames = new String[names.Count];
String[] asNames = new String[names.Count];
for (int i = 0; i < names.Count; i++) {
alias alias = (alias)names[i];
newNames[i] = alias.name;
asNames[i] = alias.asname;
}
return new FromImportStatement(root, newNames, asNames, false, absolute);
}
// RelativeModuleName
public override bool Walk(RelativeModuleName node) {
node.Parent = _currentScope;
return base.Walk(node);
}
public void Visit(PyAst.RelativeModuleName node) => throw CreateNotImplementedEx();