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Better error messages for missing channel element type. 

From-SVN: r171634
This commit is contained in:
Ian Lance Taylor 2011-03-28 21:50:53 +00:00
parent e45f44f3cf
commit f9fc495911
1 changed files with 17 additions and 0 deletions
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17
gcc/go/gofrontend/parse.cc
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@ -656,6 +656,23 @@ Parse::channel_type()
this->advance_token();
}
}
// Better error messages for the common error of omitting the
// channel element type.
if (!this->type_may_start_here())
{
token = this->peek_token();
if (token->is_op(OPERATOR_RCURLY))
error_at(this->location(), "unexpected %<}%> in channel type");
else if (token->is_op(OPERATOR_RPAREN))
error_at(this->location(), "unexpected %<)%> in channel type");
else if (token->is_op(OPERATOR_COMMA))
error_at(this->location(), "unexpected comma in channel type");
else
error_at(this->location(), "expected channel element type");
return Type::make_error_type();
}
Type* element_type = this->type();
return Type::make_channel_type(send, receive, element_type);
}