mirror of
https://github.com/kanaka/mal.git
synced 2024-09-20 01:57:09 +03:00
33 lines
705 B
R
33 lines
705 B
R
if(!exists("..readline..")) source("readline.r")
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if(!exists("..types..")) source("types.r")
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if(!exists("..reader..")) source("reader.r")
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if(!exists("..printer..")) source("printer.r")
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READ <- function(str) {
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return(read_str(str))
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}
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EVAL <- function(ast, env) {
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return(ast)
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}
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PRINT <- function(exp) {
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return(.pr_str(exp, TRUE))
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}
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rep <- function(str) {
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return(PRINT(EVAL(READ(str), "")))
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}
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repeat {
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line <- readline("user> ")
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if (is.null(line)) { cat("\n"); break }
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tryCatch({
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cat(rep(line),"\n", sep="")
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}, error=function(err) {
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cat("Error: ", get_error(err),"\n", sep="")
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})
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# R debug/fatal with tracebacks:
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#cat(rep(line),"\n", sep="")
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}
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