AstTry ParseTryStatement(Position nodeStart)
{
Next();
var block = ParseBlock();
AstCatch handler = null;
if (Type == TokenType.Catch)
{
var startLocation = Start;
Next();
Expect(TokenType.ParenL);
var param = ParseBindingAtom();
EnterLexicalScope();
CheckLVal(param, true, VariableKind.Let);
param = new AstSymbolCatch((AstSymbol)param);
Expect(TokenType.ParenR);
var body = ParseBlock(false);
ExitLexicalScope();
handler = new AstCatch(this, startLocation, _lastTokEnd, param, ref body.Body);
}
var startOfFinally = CurPosition();
var finalizerBody = Eat(TokenType.Finally) ? ParseBlock() : null;
if (handler == null && finalizerBody == null)
{
Raise(nodeStart, "Missing catch or finally clause");
}
var finalizer = finalizerBody != null
? new AstFinally(this, startOfFinally, finalizerBody.End, ref finalizerBody.Body)
: null;
return(new AstTry(this, nodeStart, _lastTokEnd, ref block.Body, handler, finalizer));
}
public override AstNode ShallowClone()
{
var res = new AstCatch(Source, Start, End, Argname);
res.Body.AddRange(Body.AsReadOnlySpan());
return(res);
}
AstCatch[] ReadCatchBlocks()
{
var len = Read7BitEncodedInt();
var result = new AstCatch[len];
for (var i = 0; i < len; i++)
{
result[i] = ReadCatch();
}
return(result);
}
