[Rd] Issue with getParserData in R3.0.0
Hello,
I am migrating my package lambda.r to R3.0.0 and am experiencing some issues
with the getParserData function (which replaces the parser package). Basically
the function works in the R shell but fails when either called from RUnit or
from R CMD check.
I've narrowed it down to the function getSrcfile, which is returning different
values depending on the code path. From the command line (works okay):
debug: srcfile <- getSrcfile(x)
Browse[2]>
debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
Browse[2]> srcfile
When running from the Runit script I get this instead:
debug: srcfile <- getSrcfile(x)
Browse[3]>
debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
Browse[3]> srcfile
NULL
Below is an example calling the getParserData from the command line:
> text <- "abs_max(a, b) %::% numeric:numeric:numeric"
> parse(text=text)
expression(abs_max(a, b) %::% numeric:numeric:numeric)
> getParseData(parse(text=text))
line1 col1 line2 col2 id parenttoken terminaltext
27 11 1 42 27 0 exprFALSE
14 11 1 13 14 27 exprFALSE
1 11 17 1 3 SYMBOL_FUNCTION_CALL TRUE abs_max
3 11 17 3 14 exprFALSE
2 18 18 2 14 '(' TRUE (
4 19 19 4 6 SYMBOL TRUE a
...
The RUnit call from the command line is
runTestFile('/home/brian/workspace/lambda.r/inst/unitTests/runit.dispatching.4.R')
and fails because of the NULL value of srcfile. The first line of the runit
test file is
abs_max(a, b) %::% numeric:numeric:numeric
Any insights are appreciated.
Brian
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Re: [Rd] Issue with getParserData in R3.0.0
On 13-01-13 8:43 PM, Brian Lee Yung Rowe wrote:> Hello,
>
> I am migrating my package lambda.r to R3.0.0 and am experiencing some
issues with the getParserData function (which replaces the parser
package). Basically the function works in the R shell but fails when
either called from RUnit or from R CMD check.
>
> I've narrowed it down to the function getSrcfile, which is returning
different values depending on the code path. From the command line
(works okay):
>
> debug: srcfile <- getSrcfile(x)
> Browse[2]>
> debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
> Browse[2]> srcfile
>
>
> When running from the Runit script I get this instead:
> debug: srcfile <- getSrcfile(x)
> Browse[3]>
> debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
> Browse[3]> srcfile
> NULL
>
>
> Below is an example calling the getParserData from the command line:
>> text <- "abs_max(a, b) %::% numeric:numeric:numeric"
>> parse(text=text)
> expression(abs_max(a, b) %::% numeric:numeric:numeric)
>> getParseData(parse(text=text))
> line1 col1 line2 col2 id parenttoken terminaltext
> 27 11 1 42 27 0 exprFALSE
> 14 11 1 13 14 27 exprFALSE
> 1 11 17 1 3 SYMBOL_FUNCTION_CALL TRUE abs_max
> 3 11 17 3 14 exprFALSE
> 2 18 18 2 14 '(' TRUE (
> 4 19 19 4 6 SYMBOL TRUE a
> ...
>
> The RUnit call from the command line is
>
runTestFile('/home/brian/workspace/lambda.r/inst/unitTests/runit.dispatching.4.R')
>
> and fails because of the NULL value of srcfile. The first line of the
runit test file is
>abs_max(a, b) %::% numeric:numeric:numeric
>
> Any insights are appreciated.
I think in the case that is failing you just don't have any source info
in the parse. parse() only installs it if the "keep.source" option is
TRUE, and the default for that is the result of interactive(). So when
you are not interactive you don't get source info.
You can fix it by explicitly setting options(keep.source=TRUE).
Duncan Murdoch
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Re: [Rd] Issue with getParserData in R3.0.0
Thanks that seems to work. It looks like other packages explicitly change this
to FALSE, so I have to set this to TRUE for each function call. Is there any
particular policy for packages that update this option? Should I restore the
original value upon function exit?
Warm Regards,
Brian
On Jan 14, 2013, at 9:34 AM, Duncan Murdoch wrote:
> On 13-01-13 8:43 PM, Brian Lee Yung Rowe wrote:> Hello,
> >
> > I am migrating my package lambda.r to R3.0.0 and am experiencing some
> > issues with the getParserData function (which replaces the parser package).
> > Basically the function works in the R shell but fails when either called
> > from RUnit or from R CMD check.
> >
> > I've narrowed it down to the function getSrcfile, which is returning
> > different values depending on the code path. From the command line (works
> > okay):
> >
> > debug: srcfile <- getSrcfile(x)
> > Browse[2]>
> > debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
> > Browse[2]> srcfile
> >
> >
> > When running from the Runit script I get this instead:
> > debug: srcfile <- getSrcfile(x)
> > Browse[3]>
> > debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
> > Browse[3]> srcfile
> > NULL
> >
> >
> > Below is an example calling the getParserData from the command line:
> >> text <- "abs_max(a, b) %::% numeric:numeric:numeric"
> >> parse(text=text)
> > expression(abs_max(a, b) %::% numeric:numeric:numeric)
> >> getParseData(parse(text=text))
> > line1 col1 line2 col2 id parenttoken terminaltext
> > 27 11 1 42 27 0 exprFALSE
> > 14 11 1 13 14 27 exprFALSE
> > 1 11 17 1 3 SYMBOL_FUNCTION_CALL TRUE abs_max
> > 3 11 17 3 14 exprFALSE
> > 2 18 18 2 14 '(' TRUE (
> > 4 19 19 4 6 SYMBOL TRUE a
> > ...
> >
> > The RUnit call from the command line is
> > runTestFile('/home/brian/workspace/lambda.r/inst/unitTests/runit.dispatching.4.R')
> >
> > and fails because of the NULL value of srcfile. The first line of the runit
> > test file is
> >abs_max(a, b) %::% numeric:numeric:numeric
> >
> > Any insights are appreciated.
>
> I think in the case that is failing you just don't have any source info in
> the parse. parse() only installs it if the "keep.source" option is TRUE, and
> the default for that is the result of interactive(). So when you are not
> interactive you don't get source info.
>
> You can fix it by explicitly setting options(keep.source=TRUE).
>
> Duncan Murdoch
>
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Re: [Rd] Issue with getParserData in R3.0.0
On 13-01-14 7:49 PM, Brian Lee Yung Rowe wrote:
Thanks that seems to work. It looks like other packages explicitly change this
to FALSE, so I have to set this to TRUE for each function call. Is there any
particular policy for packages that update this option? Should I restore the
original value upon function exit?
Options belong to the user, not to you. You should definitely save the
old value and restore it when you're done.
Duncan Murdoch
Warm Regards,
Brian
On Jan 14, 2013, at 9:34 AM, Duncan Murdoch wrote:
On 13-01-13 8:43 PM, Brian Lee Yung Rowe wrote:> Hello,
I am migrating my package lambda.r to R3.0.0 and am experiencing some issues
with the getParserData function (which replaces the parser package). Basically
the function works in the R shell but fails when either called from RUnit or
from R CMD check.
I've narrowed it down to the function getSrcfile, which is returning different
values depending on the code path. From the command line (works okay):
debug: srcfile <- getSrcfile(x)
Browse[2]>
debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
Browse[2]> srcfile
When running from the Runit script I get this instead:
debug: srcfile <- getSrcfile(x)
Browse[3]>
debug: if (is.null(srcfile)) return(NULL) else data <- srcfile$parseData
Browse[3]> srcfile
NULL
Below is an example calling the getParserData from the command line:
text <- "abs_max(a, b) %::% numeric:numeric:numeric"
parse(text=text)
expression(abs_max(a, b) %::% numeric:numeric:numeric)
getParseData(parse(text=text))
line1 col1 line2 col2 id parenttoken terminaltext
27 11 1 42 27 0 exprFALSE
14 11 1 13 14 27 exprFALSE
1 11 17 1 3 SYMBOL_FUNCTION_CALL TRUE abs_max
3 11 17 3 14 exprFALSE
2 18 18 2 14 '(' TRUE (
4 19 19 4 6 SYMBOL TRUE a
...
The RUnit call from the command line is
runTestFile('/home/brian/workspace/lambda.r/inst/unitTests/runit.dispatching.4.R')
and fails because of the NULL value of srcfile. The first line of the runit
test file is
abs_max(a, b) %::% numeric:numeric:numeric
Any insights are appreciated.
I think in the case that is failing you just don't have any source info in the parse.
parse() only installs it if the "keep.source" option is TRUE, and the default
for that is the result of interactive(). So when you are not interactive you don't get
source info.
You can fix it by explicitly setting options(keep.source=TRUE).
Duncan Murdoch
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