should the text for RIGHT_ASSIGN be -> in getParseData()?
On 13-07-05 3:31 AM, Yihui Xie wrote:
Hi, The text column for '->' becomes '<-' in the data frame returned by getParseData():
getParseData(parse(text='1->x'))
line1 col1 line2 col2 id parent token terminal text 7 1 1 1 4 7 0 expr FALSE 1 1 1 1 1 1 2 NUM_CONST TRUE 1 2 1 1 1 1 2 7 expr FALSE 3 1 2 1 3 3 7 RIGHT_ASSIGN TRUE <- 4 1 4 1 4 4 6 SYMBOL TRUE x 6 1 4 1 4 6 7 expr FALSE Is that expected?
It's by design, but I agree it's not ideal. The reason for it is that "1 -> x" is parsed as `<-`(x, 1). I think the parser only does translations like this for -> and ->>. Currently the parser shows the name of the binary operator as the text. I'll look into adding special handling for translations like this. We will still parse the assignment in the same way, but the getParseData text could be the true text. Duncan Murdoch
sessionInfo()
R version 3.0.1 (2013-05-16) Platform: x86_64-pc-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base Regards, Yihui -- Yihui Xie <xieyihui at gmail.com> Phone: 206-667-4385 Web: http://yihui.name Fred Hutchinson Cancer Research Center, Seattle
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