}
mainLoop <- function(io) {
- dispatch <- function(event) {
- str(event)
- kind <- event[[1]]
- if(kind == quote(`:emacs-rex`)) {
- do.call("emacsRex", event[-1])
- }
+ while(TRUE) {
+ withRestarts(tryCatch(dispatch(io, readPacket(io)),
+ swankTopLevel=function(c) NULL),
+ abort="return to SLIME's toplevel")
}
- sendToEmacs <- function(obj) {
- payload <- writeSexpToString(obj)
- writeChar(sprintf("%06x", nchar(payload)), io, eos=NULL)
- writeChar(payload, io, eos=NULL)
- flush(io)
- cat(sprintf("%06x", nchar(payload)), payload, sep="")
+}
+
+dispatch <- function(io, event, sldbState=NULL) {
+ str(event)
+ kind <- event[[1]]
+ if(kind == quote(`:emacs-rex`)) {
+ do.call("emacsRex", c(list(io), list(sldbState), event[-1]))
}
- emacsRex <- function(form, pkg, thread, id) {
- value <- do.call(eval(form[[1]]), form[-1])
- sendToEmacs(list(quote(`:return`), list(quote(`:ok`), value), id))
+}
+
+sendToEmacs <- function(io, obj) {
+ str(obj)
+ payload <- writeSexpToString(obj)
+ writeChar(sprintf("%06x", nchar(payload)), io, eos=NULL)
+ writeChar(payload, io, eos=NULL)
+ flush(io)
+ cat(sprintf("%06x", nchar(payload)), payload, sep="")
+}
+
+emacsRex <- function(io, sldbState, form, pkg, thread, id, level=0) {
+ ok <- FALSE
+ value <- NULL
+ tryCatch({
+ withCallingHandlers({
+ value <- do.call(eval(form[[1]]), c(list(io), list(sldbState), form[-1]))
+ ok <- TRUE
+ }, error=function(c) {
+ newSldbState <- makeSldbState(c, if(is.null(sldbState)) 0 else sldbState$level+1, id)
+ withRestarts(sldbLoop(io, newSldbState, id), abort=paste("return to sldb level", newSldbState$level)) })},
+ finally=sendToEmacs(io, list(quote(`:return`), if(ok) list(quote(`:ok`), value) else list(quote(`:abort`)), id)))
+}
+
+makeSldbState <- function(condition, level, id) {
+ calls <- rev(sys.calls())[-1]
+ frames <- rev(sys.frames())[-1]
+ restarts <- rev(computeRestarts(condition))[-1]
+ ret <- list(condition=condition, level=level, id=id, restarts=restarts, calls=calls, frames=frames)
+ class(ret) <- c("sldbState", class(ret))
+ ret
+}
+
+sldbLoop <- function(io, sldbState, id) {
+ tryCatch({
+ sendToEmacs(io, c(list(quote(`:debug`), id, sldbState$level), debuggerInfoForEmacs(sldbState)))
+ sendToEmacs(io, list(quote(`:debug-activate`), id, sldbState$level, FALSE))
+ while(TRUE) {
+ dispatch(io, readPacket(io), sldbState)
+ }
+ }, finally=sendToEmacs(io, c(list(quote(`:debug-return`), id, sldbState$level, FALSE))))
+}
+
+debuggerInfoForEmacs <- function(sldbState, from=0, to=NULL) {
+ backtraceForEmacs <- function() {
+ calls <- sldbState$calls
+ if(is.null(to)) to <- length(calls)
+ from <- from+1
+ calls <- lapply(calls[from:to], { frameNumber <- from-1;
+ function (x) { ret <- list(frameNumber, paste(format(x), sep="", collapse=" ")); frameNumber <<- 1+frameNumber; ret }})
}
-
- while(TRUE) {
- tryCatch(dispatch(readPacket(io)),
- swankTopLevel=NULL)
+ computeRestartsForEmacs <- function () {
+ lapply(sldbState$restarts,
+ function(x) {
+ ## this is all a little bit internalsy
+ restartName <- x[[1]][[1]]
+ description <- restartDescription(x)
+ list(restartName, if(is.null(description)) restartName else description)
+ })
}
+ list(list(as.character(sldbState$condition), sprintf(" [%s]", class(sldbState$condition)[[1]]), FALSE),
+ computeRestartsForEmacs(),
+ backtraceForEmacs(),
+ list(sldbState$id))
}
readPacket <- function(io) {
}
string <- paste(string, ")", sep="") },
"symbol"={ string <- paste(string, as.character(obj), sep="") },
- "logical"={ if(obj) { paste(string, "t", sep="") } else { paste(string, "nil", sep="") }},
+ "logical"={ string <- if(obj) { paste(string, "t", sep="") } else { paste(string, "nil", sep="") }},
"double"={ string <- paste(string, as.character(obj), sep="") },
"integer"={ string <- paste(string, as.character(obj), sep="") },
stop(paste("can't write object ", obj, sep="")))
writeSexpToStringLoop(obj)
}
-`swank:connection-info` <- function () {
+printToString <- function(val) {
+ f <- fifo("")
+ sink(f)
+ print(val)
+ sink()
+ readLines(f)
+}
+
+`swank:connection-info` <- function (io, sldbState) {
list(quote(`:pid`), Sys.getpid(),
quote(`:package`), list(quote(`:name`), "R", quote(`:prompt`), "R> "),
quote(`:lisp-implementation`), list(quote(`:type`), "R",
quote(`:version`), paste(R.version$major, R.version$minor, sep=".")))
}
-`swank:swank-require` <- function (contribs) {
+`swank:swank-require` <- function (io, sldbState, contribs) {
list()
}
-`swank:create-repl` <- function(env, ...) {
+`swank:create-repl` <- function(io, sldbState, env, ...) {
list("R", "R")
}
-`swank:listener-eval` <- function(string) {
- val <- eval(parse(text=string))
- f <- fifo("")
- sink(f)
- print(val)
- sink()
- lines <- readLines(f)
- list(quote(`:values`), paste(lines, collapse="\n"))
+`swank:listener-eval` <- function(io, sldbState, string) {
+ val <- eval(parse(text=string), envir = globalenv())
+ string <- printToString(val)
+ list(quote(`:values`), paste(string, collapse="\n"))
}
-`swank:autodoc` <- function(rawForm, ...) {
+`swank:autodoc` <- function(io, sldbState, rawForm, ...) {
"No Arglist Information"
}
-`swank:throw-to-toplevel` <- function() {
- condition <- simpleError("Throw to toplevel")
+`swank:throw-to-toplevel` <- function(io, sldbState) {
+ condition <- simpleCondition("Throw to toplevel")
class(condition) <- c("swankTopLevel", class(condition))
signalCondition(condition)
}
+
+`swank:debugger-info-for-emacs` <- function(io, sldbState, from, to) {
+ debuggerInfoForEmacs(sldbState, from=from, to=to)
+}
+
+`swank:invoke-nth-restart-for-emacs` <- function(io, sldbState, level, n) {
+ if(sldbState$level == level) {
+ invokeRestart(sldbState$restarts[[n+1]])
+ }
+}
+
+`swank:buffer-first-change` <- function(io, sldbState, filename) {
+ FALSE
+}
+
+`swank:frame-locals-and-catch-tags` <- function(io, sldbState, index) {
+ str(sldbState$frames)
+ frame <- sldbState$frames[[1+index]]
+ objs <- ls(envir=frame)
+ list(lapply(objs, function(name) { list(quote(`:name`), name,
+ quote(`:id`), 0,
+ quote(`:value`), paste(printToString(eval(parse(text=name), envir=frame)), sep="", collapse="\n")) }),
+ list())
+}
projects / swankr.git / blobdiff