sexp.c | A very primitive LISP interpreter | Interpreter library

I am looking for a way to generate an expression tree from a script in C#. Currently, I am using IronPython, but I am open to switching if it would make it easier to get the expression tree. Also, I realize that I could get this from implementing my own scripting language; however, I would rather use one that is already created if possible.

If a scripting language besides IronPython is recommended, I need it to have: if statements (preferably with and/or), mathematical operations (+,-,*,/,log,%,^), loops, and the ability to add custom functions.

As an example of what I am trying to do, I have included two blocks of code.One calculates the bonus using an expression tree that is created and then compiled:

I'm a newbie with Renjin. I'm trying to use Renjin in a Java application. I'm trying to develop the example showed here.

I'm compiling with gradle, as recommended in the renjin's web page.

So, with gradle build all is ok when I run gradle build.

I am trying to install 'forecast' package in R (version 3.1.1 64bit) on my Debian jessie machine.

I have installed other R packages required for my analyses. However, when I try to install 'forecast' package it require dependencies, namely, rlang, tipple and ggplot2. It looks from the error log (shown below) tipple and ggplot2 requires rlang to be installed for them to be installed.

gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g -c sexp.c -o sexp.o

gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g -c splice.c -o splice.o

In file included from splice.c:2:0:

vector.h: In function ‘namespace_rlang_sym’:

vector.h:94:19: error: ‘R_DoubleColonSymbol’ undeclared (first use in this function) return(Rf_lang3(R_DoubleColonSymbol, rlang_sym, sym)); ^ vector.h:94:19: note: each undeclared identifier is reported only once for each function it appears in

/usr/lib/R/etc/Makeconf:128: recipe for target 'splice.o' failed

make: *** [splice.o] Error 1

ERROR: compilation failed for package ‘rlang’

• removing ‘/usr/local/lib/R/site-library/rlang’

Warning in install.packages : installation of package ‘rlang’ had non-zero exit status ERROR: dependency ‘rlang’ is not available for package ‘tibble’ * removing ‘/usr/local/lib/R/site-library/tibble’

Warning in install.packages : installation of package ‘tibble’ had non-zero exit status ERROR: dependency ‘tibble’ is not available for package ‘ggplot2’ * removing ‘/usr/local/lib/R/site-library/ggplot2’

Warning in install.packages : installation of package ‘ggplot2’ had non-zero exit status ERROR: dependency ‘ggplot2’ is not available for package ‘forecast’ * removing ‘/usr/local/lib/R/site-library/forecast’

Warning in install.packages : installation of package ‘forecast’ had non-zero exit status

rlang installation fails with the above error message. Any expert help would be much appreciated.