cat(sprintf("%06x", nchar(payload)), payload, sep="")
}
+callify <- function(form) {
+ ## we implement here the conversion from Lisp S-expression (or list)
+ ## expressions of code into our own, swankr, calling convention,
+ ## with slimeConnection and sldbState as first and second arguments.
+ ## as.call() gets us part of the way, but we need to walk the list
+ ## recursively to mimic CL:EVAL; we need to avoid converting R
+ ## special operators which we are punning (only `quote`, for now)
+ ## into this calling convention.
+ if(is.list(form)) {
+ if(form[[1]] == quote(quote)) {
+ as.call(form)
+ } else {
+ as.call(c(list(form[[1]], quote(slimeConnection), quote(sldbState)), lapply(form[-1], callify)))
+ }
+ } else {
+ form
+ }
+}
+
emacsRex <- function(slimeConnection, sldbState, form, pkg, thread, id, level=0) {
ok <- FALSE
value <- NULL
tryCatch({
withCallingHandlers({
- value <- do.call(eval(form[[1]]), c(list(slimeConnection), list(sldbState), form[-1]))
+ call <- callify(form)
+ value <- eval(call)
ok <- TRUE
}, error=function(c) {
newSldbState <- makeSldbState(c, if(is.null(sldbState)) 0 else sldbState$level+1, id)
}
`swank:swank-require` <- function (slimeConnection, sldbState, contribs) {
+ for(contrib in contribs) {
+ filename <- sprintf("%s.R", as.character(contrib))
+ if(file.exists(filename)) {
+ source(filename, verbose=TRUE)
+ }
+ }
list()
}
list("R", "R")
}
+sendReplResult <- function(slimeConnection, value) {
+ string <- printToString(value)
+ sendToEmacs(slimeConnection,
+ list(quote(`:write-string`),
+ paste(string, collapse="\n"),
+ quote(`:repl-result`)))
+}
+
+sendReplResultFunction <- sendReplResult
+
`swank:listener-eval` <- function(slimeConnection, sldbState, string) {
- val <- eval(parse(text=string), envir = globalenv())
- string <- printToString(val)
- sendToEmacs(slimeConnection, list(quote(`:write-string`), paste(string, collapse="\n"), quote(`:repl-result`)))
+ string <- gsub("#\\.\\(swank:lookup-presented-object-or-lose([^)]*)\\)", ".(`swank:lookup-presented-object-or-lose`(slimeConnection, sldbState,\\1))", string)
+ expr <- parse(text=string)[[1]]
+ lookedup <- do.call("bquote", list(expr))
+ value <- eval(lookedup, envir = globalenv())
+ sendReplResultFunction(slimeConnection, value)
list()
}