// dict_display: '{' [dictorsetmaker] '}'
// dictorsetmaker: ( (test ':' test (comp_for | (',' test ':' test)* [','])) |
// (test (comp_for | (',' test)* [','])) )
private Expression FinishDictOrSetValue() {
var oStart = GetStart();
var oEnd = GetEnd();
List<SliceExpression> dictMembers = null;
List<Expression> setMembers = null;
bool prevAllow = _allowIncomplete;
try {
_allowIncomplete = true;
while (true) {
if (MaybeEat(TokenKind.RightBrace)) { // empty dict literal
break;
}
bool first = false;
Expression e1 = ParseExpression();
if (MaybeEat(TokenKind.Colon)) { // dict literal
if (setMembers != null) {
ReportSyntaxError("invalid syntax");
} else if (dictMembers == null) {
dictMembers = new List<SliceExpression>();
first = true;
}
Expression e2 = ParseExpression();
if (PeekToken(Tokens.KeywordForToken)) {
if (!first) {
ReportSyntaxError("invalid syntax");
}
return FinishDictComp(e1, e2, oStart, oEnd);
}
SliceExpression se = new SliceExpression(e1, e2, null, false);
se.SetLoc(_globalParent, e1.StartIndex, e2.EndIndex);
dictMembers.Add(se);
} else { // set literal
if (dictMembers != null) {
ReportSyntaxError("invalid syntax");
} else if (setMembers == null) {
setMembers = new List<Expression>();
first = true;
}
if (PeekToken(Tokens.KeywordForToken)) {
if (!first) {
ReportSyntaxError("invalid syntax");
}
return FinishSetComp(e1, oStart, oEnd);
}
// error recovery
if (setMembers != null) {
setMembers.Add(e1);
}
}
if (!MaybeEat(TokenKind.Comma)) {
Eat(TokenKind.RightBrace);
break;
}
}
} finally {
_allowIncomplete = prevAllow;
}
var cStart = GetStart();
var cEnd = GetEnd();
if (_sink != null) {
_sink.MatchPair(
new SourceSpan(_tokenizer.IndexToLocation(oStart), _tokenizer.IndexToLocation(oEnd)),
new SourceSpan(_tokenizer.IndexToLocation(cStart), _tokenizer.IndexToLocation(cEnd)),
1
);
}
if (dictMembers != null || setMembers == null) {
SliceExpression[] exprs;
if (dictMembers != null) {
exprs = dictMembers.ToArray();
} else {
exprs = new SliceExpression[0];
}
DictionaryExpression ret = new DictionaryExpression(exprs);
ret.SetLoc(_globalParent, oStart, cEnd);
return ret;
} else {
SetExpression ret = new SetExpression(setMembers.ToArray());
ret.SetLoc(_globalParent, oStart, cEnd);
return ret;
}
}
internal Dict(DictionaryExpression expr)
: this() {
_keys = PythonOps.MakeEmptyList(expr.Items.Count);
_values = PythonOps.MakeEmptyList(expr.Items.Count);
foreach (SliceExpression item in expr.Items) {
_keys.Add(Convert(item.SliceStart));
_values.Add(Convert(item.SliceStop));
}
}
// dict_display: '{' [key_datum_list] '}'
// key_datum_list: key_datum (',' key_datum)* [","]
// key_datum: expression ':' expression
private Expression FinishDictValue() {
SourceLocation oStart = GetStart();
SourceLocation oEnd = GetEnd();
List<SliceExpression> l = new List<SliceExpression>();
bool prevAllow = _allowIncomplete;
try {
_allowIncomplete = true;
while (true) {
if (MaybeEat(TokenKind.RightBrace)) {
break;
}
Expression e1 = ParseExpression();
Eat(TokenKind.Colon);
Expression e2 = ParseExpression();
SliceExpression se = new SliceExpression(e1, e2, null, false);
se.SetLoc(e1.Start, e2.End);
l.Add(se);
if (!MaybeEat(TokenKind.Comma)) {
Eat(TokenKind.RightBrace);
break;
}
}
} finally {
_allowIncomplete = prevAllow;
}
SourceLocation cStart = GetStart();
SourceLocation cEnd = GetEnd();
_sink.MatchPair(new SourceSpan(oStart, oEnd), new SourceSpan(cStart, cEnd), 1);
SliceExpression[] exprs = l.ToArray();
DictionaryExpression ret = new DictionaryExpression(exprs);
ret.SetLoc(oStart, cEnd);
return ret;
}
public override void PostWalk(DictionaryExpression node)
{
EndIndent();
string ind = Indent(indent + 1);
List<string> items = new List<string>();
for (int i = 0; i < node.Items.Count; i++)
{
items.Add(ind + Content());
}
items.Reverse();
StringBuilder sb = new StringBuilder();
sb.AppendLine("{");
sb.AppendLine(String.Join(",\n", items));
sb.Append(Indent());
sb.Append("}");
Content(sb.ToString());
CommonPostWalk(node, true);
}
public override bool Walk(DictionaryExpression node)
{
node.Parent = _currentScope;
return base.Walk(node);
}
// DictionaryExpression
public bool Walk(DictionaryExpression node)
{
return Process(node);
}
public override bool Walk(DictionaryExpression node)
{
CommonWalk(node);
BeginIndent();
return true;
}
// DictionaryExpression
public override bool Walk(DictionaryExpression node)
{
node.Parent = _currentScope;
return(base.Walk(node));
}
public void PostWalk(DictionaryExpression node)
{
PostProcess(node);
}
public static string Format(DictionaryExpression node)
{
return("{" + node.Items.Format() + "}");
}
public virtual void PostWalk(DictionaryExpression node)
{
}
// DictionaryExpression
public virtual bool Walk(DictionaryExpression node)
{
return true;
}
public string Visit(PyAst.DictionaryExpression node) => throw CreateNotImplementedEx();
public override bool Walk(DictionaryExpression node)
{
writer.WriteLine("Dict");
return base.Walk(node);
}