Test rudolph with nmtran

rudolph_test.R

if (!requireNamespace("rudolph")) {
  devtools::install_github("billdenney/rudolph/r/rudolph")
}
library(rudolph)

nmtrancpp_dir <- "c:/git/Not_my_repositories/nmtranprocessorcpp"
grammar_path <- file.path(nmtrancpp_dir, "grammar/")
compiled_path <- file.path(grammar_path, "rudolph/")
if (!dir.exists(nmtrancpp_dir)) {
  dir.create(nmtrancpp_dir, showWarnings=FALSE, recursive=TRUE)
  git2r::clone(
    url="https://github.com/EightPillars/nmtranprocessorcpp.git",
    local_path=nmtrancpp_dir
  )
} else {
  git2r::pull(repo=nmtrancpp_dir)
}
dir.create(compiled_path, showWarnings=FALSE, recursive=TRUE)

# Add the path to javac to the main path (omit if javac is already on the path)
Sys.setenv(PATH=paste0(Sys.getenv("PATH"), "C:\\Program Files\\Java\\jdk-13.0.1\\bin;"))
grammarFiles <-
  list.files(
    pattern="g4$",
    path=grammar_path,
    full.names=TRUE
  )
elf <- Elf(
  # where to save the generated compiled parser/lexer files
  destinationDirectory = compiled_path,
  grammarFiles         = grammarFiles,
  parserPrefix="NmtranParser",
  lexerPrefix="NmtranLexer"
)
generateAndCompile(elf)

rudolph <- Rudolph(
  grammarFiles    = grammarFiles,
  rootNode        = "nmModel",
  sourceDirectory = compiled_path,
  parserPrefix="NmtranParser",
  lexerPrefix="NmtranLexer"
)

model <- readLines("c:/nm74g64/examples/example1.ctl")

ast <- getAST(rudolph, paste(model, collapse="\n"))

print(ast)

Thanks, @billdenney Looks promising.