mirror of
https://github.com/kanaka/mal.git
synced 2024-09-21 02:27:10 +03:00
b8ee29b22f
Also, fix nth and count to match cloure.
55 lines
1.7 KiB
R
55 lines
1.7 KiB
R
..printer.. <- TRUE
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if(!exists("..types..")) source("types.r")
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.pr_list <- function(lst, print_readably=TRUE, join="") {
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concatl(lapply(lst,
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function(e) .pr_str(e, print_readably)), sep=join)
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}
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.pr_str <- function(exp, print_readably=TRUE) {
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pr <- print_readably
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switch(class(exp),
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"List"={
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paste("(", .pr_list(exp, pr, " "), ")", sep="", collapse="")
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},
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"Vector"={
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paste("[", .pr_list(exp, pr, " "), "]", sep="", collapse="")
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},
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"HashMap"={
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hlst <- list()
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if (length(exp) > 0) {
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for(k in ls(exp)) {
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hlst[[length(hlst)+1]] <- k
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hlst[[length(hlst)+1]] <- exp[[k]]
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}
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}
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paste("{", .pr_list(hlst, pr, " "), "}", sep="", collapse="")
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},
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"character"={
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if (substring(exp,1,1) == "\u029e") {
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concat(":", substring(exp,2))
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} else if (print_readably) {
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paste("\"",
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gsub("\\n", "\\\\n",
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gsub("\\\"", "\\\\\"",
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gsub("\\\\", "\\\\\\\\", exp))),
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"\"", sep="", collapse="")
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} else {
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exp
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}
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},
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"Symbol"={ exp },
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"nil"={ "nil" },
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"logical"={ tolower(exp) },
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"MalFunc"={
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paste("(fn* ", .pr_str(exp$params,TRUE),
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" ", .pr_str(exp$ast, TRUE), ")", sep="")
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},
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"function"={ "<#function>" },
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"Atom"={
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paste("(atom ", .pr_str(exp$val,TRUE), ")", sep="")
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},
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{ toString(exp) })
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}
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