renamed prog to begin and added basics for the manual

bin/pre.slime

@@ -1,20 +1,20 @@
 (define-syntax (when condition :rest body)
   "Doc String for 'when'"
-  `(if ,condition ,(pair prog body) nil))
+  `(if ,condition ,(pair begin body) nil))
 
 (define-syntax (unless condition :rest body)
-  `(if ,condition nil ,(pair prog body)))
+  `(if ,condition nil ,(pair begin body)))
 
 ;; (define-syntax defun (name arguments :rest body)
 ;;   ;; (type-assert arguments :pair)
 ;;   ;; `(define ,name (lambda ,arguments ,body))
 ;;   ;; TODO(Felix: I think we do not need to wrap the body of the lamba
-;;   ;; in a prog
+;;   ;; in a begin
 
 ;;   ;; see if we have a docstring
 ;;   (if (and (= (type (first body)) :string) (not (= (type (rest body)) :nil)))
-;;       (list 'define name (list 'lambda arguments (first body) (pair 'prog (rest body))))
-;;     (list 'define name (list 'lambda arguments (pair 'prog body)))))
+;;       (list 'define name (list 'lambda arguments (first body) (pair 'begin (rest body))))
+;;     (list 'define name (list 'lambda arguments (pair 'begin body)))))
 
 
 ;; (define-syntax defspecial (name arguments :rest body)
@@ -23,20 +23,20 @@
 
 ;;   ;; see if we have a docstring
 ;;   (if (and (= (type (first body)) :string) (not (= (type (rest body)) :nil)))
-;;       (list 'define name (list 'special-lambda arguments (first body) (pair 'prog (rest body))))
-;;     (list 'define name (list 'special-lambda arguments (pair 'prog body)))))
+;;       (list 'define name (list 'special-lambda arguments (first body) (pair 'begin (rest body))))
+;;     (list 'define name (list 'special-lambda arguments (pair 'begin body)))))
 
 ;; (define (fib n))
 ;; (define-syntax define (name :rest value)
 ;;   (print name)
 ;;   (print (type name))
 ;;   (if (= (type name) :pair)
-;;       (prog
+;;       (begin
 ;;        ;; (print `(define ,(first name) ,`(pair lambda (pair (rest name) value))))
 ;;        ;; (print rest)
 ;;        (print "\naa\n")
 ;;        (list 'define (first name) (pair 'lambda (pair (rest name) value))))
-;;     (prog
+;;     (begin
 ;;      ;; (print (pair 'define (pair name value)))
 ;;      (print "\nbb\n")
 ;;      (pair 'define (pair name value)))))
@@ -47,12 +47,12 @@
     (if (= nil clauses)
         nil
       (if (= (first (first clauses)) 'else)
-          (prog
+          (begin
            (if (not (= () (rest clauses)))
                (error "There are additional clauses after the else clause!")
-             (pair 'prog (rest (first clauses)))))
+             (pair 'begin (rest (first clauses)))))
         (list 'if (first (first clauses))
-              (pair 'prog (rest (first clauses)))
+              (pair 'begin (rest (first clauses)))
               (rec (rest clauses))))))
     (rec clauses))
 
@@ -111,7 +111,7 @@ ithe sequence as arguemens."
   "Extends a list with the given element, by putting it in
 the (rest) of the last element of the sequence."
   (if (pair? seq)
-      (prog
+      (begin
         (define e (end seq))
         (mutate e (pair (first e) elem))
         seq)
@@ -161,7 +161,7 @@ with (pair elem nil)."
 ;;       (macro-define @op nil)))
 ;;   (when @op
 ;;      (macro-define (eval @symbol) (eval @from))
-;;      (eval (pair prog @for-body))
+;;      (eval (pair begin @for-body))
 ;;      (eval (extend (list for @symbol (@op @from) @to) @for-body))))
 
 (define (range :keys from :defaults-to 0 to)
@@ -177,7 +177,7 @@ by the key 'from' and ends with the number defined in 'to'."
   (define head result)
   (mutate from (increment from))
   (while (< from to)
-    (prog
+    (begin
      (mutate head (pair (first head) (pair (copy from) nil)))
      (define head (rest head))
      (mutate from (increment from))))
@@ -233,8 +233,8 @@ separators between the arguments and what should be printed after the
 las argument."
   (define printf-quoted (special-lambda (:keys @sep @end :rest @args)
     (if (nil? @args)
-        (prog (print (eval @end)) nil)
-      (prog
+        (begin (print (eval @end)) nil)
+      (begin
        (print (first @args))
        (unless (nil? (rest @args))
          (print (eval @sep)))

bin/pre.slime.expanded

@@ -24,7 +24,7 @@ ithe sequence as arguemens." (eval (pair fun seq)))
 (define (last seq) "Returns the (first) of the last (pair) of the given sequence." (first (end seq)))
 
 (define (extend seq elem) "Extends a list with the given element, by putting it in
-the (rest) of the last element of the sequence." (if (pair? seq) (prog (define e (end seq)) (mutate e (pair (first e) elem)) seq) elem))
+the (rest) of the last element of the sequence." (if (pair? seq) (begin (define e (end seq)) (mutate e (pair (first e) elem)) seq) elem))
 
 (define (append seq elem) "Appends an element to a sequence, by extendeing the list
 with (pair elem nil)." (extend seq (pair elem nil)))
@@ -39,7 +39,7 @@ with (pair elem nil)." (extend seq (pair elem nil)))
 by the key 'from' and ends with the number defined in 'to'." (if (< from to) ([C-function] (pair from (range :from (+ 1.000000 from) :to to))) nil))
 
 (define (range-while :keys from :defaults-to 0.000000 to) "Returns a sequence of numbers starting with the number defined
-by the key 'from' and ends with the number defined in 'to'." (define result (list (copy from))) (define head result) (mutate from (increment from)) (while (< from to) (prog (mutate head (pair (first head) (pair (copy from) nil))) (define head (rest head)) (mutate from (increment from)))) result)
+by the key 'from' and ends with the number defined in 'to'." (define result (list (copy from))) (define head result) (mutate from (increment from)) (while (< from to) (begin (mutate head (pair (first head) (pair (copy from) nil))) (define head (rest head)) (mutate from (increment from)))) result)
 
 (define (map fun seq) "Takes a function and a sequence as arguments and returns a new
 sequence which contains the results of using the first sequences
@@ -67,5 +67,5 @@ added to a list, which in the end is returned." (if seq ([C-function] (if (fun (
 " :rest args) "A wrapper for the built-in (print) that accepts a variable number
 of arguments and also provides keywords for specifying the printed
 separators between the arguments and what should be printed after the
-las argument." (define printf-quoted (special-lambda (:keys @sep @end :rest @args) (if (nil? @args) (prog (print (eval @end)) nil) (prog (print (first @args)) (if (nil? (rest @args)) nil ([C-function] (print (eval @sep)))) (eval (pair printf-quoted (extend (list :@sep (eval @sep) :@end (eval @end)) (rest @args)))))))) (eval (pair printf-quoted (extend (list :@sep (eval sep) :@end (eval end)) args))))
+las argument." (define printf-quoted (special-lambda (:keys @sep @end :rest @args) (if (nil? @args) (begin (print (eval @end)) nil) (begin (print (first @args)) (if (nil? (rest @args)) nil ([C-function] (print (eval @sep)))) (eval (pair printf-quoted (extend (list :@sep (eval @sep) :@end (eval @end)) (rest @args)))))))) (eval (pair printf-quoted (extend (list :@sep (eval sep) :@end (eval end)) args))))
 

manual/build.sh

@@ -0,0 +1,17 @@
+echo ================================================
+echo               Starting Tex Export
+echo ================================================
+
+FILENAME=manual
+
+emacsclient -c --frame-parameters="((visibility . nil))" \
+            -e "(progn (require 'org) (find-file-other-window \"$FILENAME.org\") (org-latex-export-to-latex) (save-buffers-kill-terminal))"  || exit 1
+
+
+echo ================================================
+echo               Tex Export Finished
+echo ================================================
+
+
+latexmk -Werror -pdf -shell-escape $FILENAME.tex || exit 1
+latexmk -c $FILENAME.tex

manual/manual.org

@@ -0,0 +1,67 @@
+#+title: The Slime 1.0 Manual
+
+{{{slime_header}}}
+#+caption: Some text to illustrate
+#+begin_src slime
+  (define (fib x)
+    (cond ((< x 1) 0)
+          ((= x 1) 1)
+          (else (+ (fib (- x 1))
+                   (fib (- x 2))))))
+
+  (print (if (> (fib 3) 1)
+      "Hello Felixses\n"
+    "Goodbye World\n"))
+
+  (fib 12)
+#+end_src
+
+#+RESULTS:
+: => Hello Felixses
+: 144.000000
+
+{{{slime_header}}}
+#+caption: Some text to illustrate
+#+begin_src slime
+  ;; Comment here
+  (print "String here")
+  (+ 1 2 3)
+#+end_src
+
+#+RESULTS:
+: => String here6.000000
+
+* meta                                                             :noexport:
+# local variables:
+# org-confirm-babel-evaluate: nil
+# end:
+
+#+author: Felix Brendel
+#+mail: felix.brendel@airmail.cc
+#+options: H:2
+
+#+macro: slime_header (eval (concat "#+header: :exports both" "\n" "#+attr_latex: :options keywordstyle=\\color{slimeKeyword}, commentstyle=\\color{slimeComment}, stringstyle=\\color{slimeString}"))
+
+#+latex_class:assign
+
+#+latex_header: \usepackage[german]{babel}
+#+latex_header: \definecolor{slimeKeyword}{HTML}{B58900}
+#+latex_header: \definecolor{slimeString}{HTML}{2AA198}
+#+latex_header: \definecolor{slimeComment}{HTML}{839496}
+
+
+#+latex_header: \lstdefinelanguage{slime}
+#+latex_header: {
+#+latex_header:   % list of keywords
+#+latex_header:   morekeywords={
+#+latex_header:     print,
+#+latex_header:     if,
+#+latex_header:     define,
+#+latex_header:     cond
+#+latex_header:   },
+#+latex_header:   basicstyle=\ttfamily\small,
+#+latex_header:   showstringspaces=false,
+#+latex_header:   sensitive=true, % keywords are not case-sensitive
+#+latex_header:   morecomment=[l]{;}, % l is for line comment
+#+latex_header:   morestring=[b]" % defines that strings are enclosed in double quotes
+#+latex_header: }

manual/manual.tex

@@ -0,0 +1,195 @@
+% Created 2019-05-15 Mi 01:07
+% Intended LaTeX compiler: pdflatex
+\documentclass{article}
+  \usepackage{amsmath,amsfonts,stmaryrd,amssymb}
+  \usepackage{enumerate}
+  \usepackage[ruled]{algorithm2e}
+  \usepackage[framemethod=tikz]{mdframed}
+  \usepackage{listings}
+  \usepackage{inconsolata}
+  \usepackage[footnote]{snotez}
+
+    \usepackage{geometry}
+
+    \geometry{
+        paper=a4paper,
+        top=40pt,
+        bottom=3cm,
+        left=30pt,
+        textwidth=417pt,
+        headheight=14pt,
+        marginparsep=20pt,
+        marginparwidth=100pt,
+        footskip=30pt,
+        headsep=0cm,
+    }
+
+
+    \usepackage[utf8]{inputenc}
+    \usepackage{sansmathfonts}
+    \usepackage[T1]{fontenc}
+    \renewcommand*\familydefault{\sfdefault}
+  \mdfdefinestyle{commandline}{
+      leftmargin=10pt,
+      rightmargin=10pt,
+      innerleftmargin=15pt,
+      middlelinecolor=black!50!white,
+      middlelinewidth=2pt,
+      frametitlerule=false,
+      backgroundcolor=black!5!white,
+      frametitle={Commandline},
+      frametitlefont={\normalfont\sffamily\color{white}\hspace{-1em}},
+      frametitlebackgroundcolor=black!50!white,
+      nobreak,
+  }
+
+
+  \newenvironment{commandline}{
+      \medskip
+      \begin{mdframed}[style=commandline]
+  }{
+      \end{mdframed}
+      \medskip
+  }
+
+
+  \mdfdefinestyle{question}{
+      innertopmargin=1.2\baselineskip,
+      innerbottommargin=0.8\baselineskip,
+      roundcorner=5pt,
+      nobreak,
+      singleextra={
+          \draw(P-|O)node[xshift=1em,anchor=west,fill=white,draw,rounded corners=5pt]{
+          Question \theQuestion\questionTitle};
+      },
+  }
+
+  \newcounter{Question}
+
+
+  \newenvironment{question}[1][\unskip]{
+      \bigskip
+      \stepcounter{Question}
+      \newcommand{\questionTitle}{~#1}
+      \begin{mdframed}[style=question]
+  }{
+      \end{mdframed}
+      \medskip
+  }
+
+
+
+  \mdfdefinestyle{warning}{
+      topline=false, bottomline=false,
+      leftline=false, rightline=false,
+      nobreak,
+      singleextra={
+          \draw(P-|O)++(-0.5em,0)node(tmp1){};
+          \draw(P-|O)++(0.5em,0)node(tmp2){};
+          \fill[black,rotate around={45:(P-|O)}](tmp1)rectangle(tmp2);
+          \node at(P-|O){\color{white}\scriptsize\bf !};
+          \draw[very thick](P-|O)++(0,-1em)--(O);
+      }
+  }
+
+
+  \newenvironment{warning}[1][Attention:]{
+      \medskip
+      \begin{mdframed}[style=warning]
+          \noindent{\textbf{#1}}
+  }{
+      \end{mdframed}
+  }
+
+
+
+  \mdfdefinestyle{info}{
+      topline=false, bottomline=false,
+      leftline=false, rightline=false,
+      nobreak,
+      singleextra={
+          \fill[black](P-|O)circle[radius=0.4em];
+          \node at(P-|O){\color{white}\scriptsize\bf i};
+          \draw[very thick](P-|O)++(0,-0.8em)--(O);
+      }
+  }
+
+  \newenvironment{info}[1][Info:]{
+      \medskip
+      \begin{mdframed}[style=info]
+          \noindent{\textbf{#1}}
+  }{
+      \end{mdframed}
+  }
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{fixltx2e}
+\usepackage{graphicx}
+\usepackage{grffile}
+\usepackage{longtable}
+\usepackage{wrapfig}
+\usepackage{rotating}
+\usepackage[normalem]{ulem}
+\usepackage{amsmath}
+\usepackage{textcomp}
+\usepackage{amssymb}
+\usepackage{capt-of}
+\usepackage[german, english]{babel}
+\definecolor{slimeKeyword}{HTML}{B58900}
+\definecolor{slimeString}{HTML}{2AA198}
+\definecolor{slimeComment}{HTML}{839496}
+\lstdefinelanguage{slime}
+{
+% list of keywords
+morekeywords={
+print,
+if,
+define,
+cond
+},
+basicstyle=\ttfamily\small,
+showstringspaces=false,
+sensitive=true, % keywords are not case-sensitive
+morecomment=[l]{;}, % l is for line comment
+morestring=[b]" % defines that strings are enclosed in double quotes
+}
+\author{Felix Brendel}
+\date{\today}
+\title{The Slime 1.0 Manual}
+\begin{document}
+
+\maketitle
+\tableofcontents
+
+\lstset{language=slime,label= ,caption={Some text to illustrate},captionpos=t,numbers=none,keywordstyle=\color{slimeKeyword}, commentstyle=\color{slimeComment}, stringstyle=\color{slimeString}}
+\begin{lstlisting}
+(define (fib x)
+  (cond ((< x 1) 0)
+        ((= x 1) 1)
+        (else (+ (fib (- x 1))
+                 (fib (- x 2))))))
+
+(print (if (> (fib 3) 1)
+    "Hello Felixses\n"
+  "Goodbye World\n"))
+
+(fib 12)
+\end{lstlisting}
+
+\begin{verbatim}
+=> Hello Felixses
+144.000000
+\end{verbatim}
+
+
+\lstset{language=slime,label= ,caption={Some text to illustrate},captionpos=t,numbers=none,keywordstyle=\color{slimeKeyword}, commentstyle=\color{slimeComment}, stringstyle=\color{slimeString}}
+\begin{lstlisting}
+;; Comment here
+(print "String here")
+(+ 1 2 3)
+\end{lstlisting}
+
+\begin{verbatim}
+=> String here6.000000
+\end{verbatim}
+\end{document}

src/built_ins.cpp

@@ -113,9 +113,9 @@ proc load_built_ins_into_environment(Environment* env) -> void {
         }
 
         // we are now in the function body, just wrap it in an
-        // implicit prog
+        // implicit begin
         try ret->value.function.body = Memory::create_lisp_object_pair(
-            Memory::get_or_create_lisp_object_symbol("prog"),
+            Memory::get_or_create_lisp_object_symbol("begin"),
             arguments);
 
 
@@ -617,7 +617,7 @@ proc load_built_ins_into_environment(Environment* env) -> void {
         });
 
 
-    defun("prog", cLambda {
+    defun("begin", cLambda {
             try evaluated_arguments = eval_arguments(arguments, env, &arguments_length);
 
             if (evaluated_arguments == Memory::nil)

src/eval.cpp

@@ -152,7 +152,7 @@ proc apply_arguments_to_function(Lisp_Object* arguments, Function* function) ->
 }
 
 /*
-   (prog
+   (begin
      (define type--before type)
      (define type
        (lambda (e)
@@ -436,11 +436,23 @@ proc interprete_file (char* file_name) -> Lisp_Object* {
     try user_env = Memory::create_child_environment(root_env);
     Parser::environment_for_macros = user_env;
 
-    // char* file_content;
-    // try file_content = read_entire_file(file_name);
+    // save the current working directory
+    char cwd[1024];
+    getcwd(cwd, 1024);
+
+    // get the direction of the exe
+    char* exe_path = exe_dir();
+
+    // switch to the exe directory for loading pre.slime
+    chdir(exe_path);
+    free(exe_path);
 
     built_in_import(Memory::create_string("pre.slime"), user_env);
 
+
+    // switch back to the users directory
+    chdir(cwd);
+
     Lisp_Object* result;
     result = built_in_load(Memory::create_string(file_name), user_env);
 
@@ -450,10 +462,11 @@ proc interprete_file (char* file_name) -> Lisp_Object* {
         return nullptr;
     }
 
+    print(result);
     return result;
 }
 
-proc interprete_stdin() -> void {
+proc interprete_stdin(bool is_emacs_repl = false) -> void {
     Memory::init(4096 * 256, 1024, 4096 * 256);
     Environment* root_env = Globals::root_environment;
     Environment* user_env = Memory::create_child_environment(root_env);
@@ -463,14 +476,29 @@ proc interprete_stdin() -> void {
         return;
     }
 
+    // save the current working directory
+    char cwd[1024];
+    getcwd(cwd, 1024);
+
+    // get the direction of the exe
+    char* exe_path = exe_dir();
+
+    // switch to the exe directory for loading pre.slime
+    chdir(exe_path);
+    free(exe_path);
+
+    built_in_import(Memory::create_string("pre.slime"), user_env);
+
+
+    // switch back to the users directory
+    chdir(cwd);
+
     Parser::environment_for_macros = user_env;
 
     printf("Welcome to the lispy interpreter.\n");
 
     char* line;
 
-    built_in_import(Memory::create_string("pre.slime"), user_env);
-
     if (Globals::error) {
         log_error();
         delete_error();
@@ -478,7 +506,7 @@ proc interprete_stdin() -> void {
 
     Lisp_Object* parsed, * evaluated;
     while (true) {
-        printf(">");
+        printf("> ");
         line = read_expression();
         defer {
             free(line);
@@ -490,12 +518,22 @@ proc interprete_stdin() -> void {
             continue;
         }
         evaluated = eval_expr(parsed, user_env);
-        if (Globals::error) {
-            log_error();
-            delete_error();
-            continue;
+        if (is_emacs_repl) {
+            if (Globals::error) {
+                printf("((error \"%s\"))", &Globals::error->message->data);
+            } else {
+                printf("((result \"");
+                print(evaluated);
+                printf("\"))");
+            }
+        } else {
+            if (Globals::error) {
+                log_error();
+                delete_error();
+                continue;
+            }
+            print(evaluated);
         }
-        print(evaluated);
         printf("\n");
     }
 }

src/forward_decls.cpp

@@ -25,6 +25,9 @@ namespace Memory {
 
 namespace Parser {
     extern String* standard_in;
+    extern String* parser_file;
+    extern int parser_line;
+    extern int parser_col;
 }
 
 namespace Globals {

src/io.cpp

@@ -63,15 +63,22 @@ proc unescape_string(char* in) -> bool {
             case 'x':
             case 'X':
                 if (!isxdigit(p[1]) || !isxdigit(p[2])) {
-                    int_err = "Invalid character on hexadecimal escape.";
+                    create_parsing_error(
+                        "The string '%s' at %s:%d:%d could not be unescaped. "
+                        "(Invalid character on hexadecimal escape at char %d)",
+                        in, Parser::parser_file, Parser::parser_line, Parser::parser_col,
+                        (p+1)-in);
                 } else {
                     *out++ = (char)(get_nibble(p[1]) * 0x10 + get_nibble(p[2]));
                     p += 3;
                 }
                 break;
             default:
-                int_err = "Unexpected '\\' with no escape sequence.";
-                break;
+                create_parsing_error(
+                    "The string '%s' at %s:%d:%d could not be unescaped. "
+                    "(Unexpected '\\' with no escape sequence at char %d)",
+                    in, Parser::parser_file, Parser::parser_line, Parser::parser_col,
+                    (p+1)-in);
             }
         }
     }
@@ -309,3 +316,65 @@ proc log_error() -> void {
     print_error_location();
     puts(console_normal);
 }
+
+char* exe_dir() {
+    size_t  size = 512, i, n;
+    char   *path, *temp;
+
+    while (1) {
+        ssize_t  used;
+
+        path = (char*)malloc(size);
+        if (!path) {
+            errno = ENOMEM;
+            return NULL;
+        }
+
+        used = readlink("/proc/self/exe", path, size);
+
+        if (used == -1) {
+            const int saved_errno = errno;
+            free(path);
+            errno = saved_errno;
+            return NULL;
+        } else
+            if (used < 1) {
+                free(path);
+                errno = EIO;
+                return NULL;
+            }
+
+        if ((size_t)used >= size) {
+            free(path);
+            size = (size | 2047) + 2049;
+            continue;
+        }
+
+        size = (size_t)used;
+        break;
+    }
+
+    /* Find final slash. */
+    n = 0;
+    for (i = 0; i < size; i++)
+        if (path[i] == '/')
+            n = i;
+
+    /* Optimize allocated size,
+       ensuring there is room for
+       a final slash and a
+       string-terminating '\0', */
+    temp = path;
+    path = (char*)realloc(temp, n + 2);
+    if (!path) {
+        free(temp);
+        errno = ENOMEM;
+        return NULL;
+    }
+
+    /* and properly trim and terminate the path string. */
+    path[n+0] = '/';
+    path[n+1] = '\0';
+
+    return path;
+}

src/main.cpp

@@ -1,9 +1,12 @@
 #include "slime.h"
 
 int main(int argc, char* argv[]) {
+
     if (argc > 1) {
         if (Slime::string_equal(argv[1], "--run-tests")) {
             return Slime::run_all_tests() ? 0 : 1;
+        } else if (Slime::string_equal(argv[1], "--run-as-emacs-repl")) {
+            Slime::interprete_stdin(true);
         }
 
         Slime::interprete_file(argv[1]);

src/parse.cpp

@@ -161,21 +161,25 @@ namespace Parser {
 
         // okay so the first letter was not actually closing the string...
         int string_length = 0;
-        while (text[*index_in_text+string_length] != '"' ||
-               text[*index_in_text+string_length] == '\\')
+        bool escaping = false;
+        while (!(text[*index_in_text+string_length] == '"' && !escaping))
         {
+            if (escaping)
+                escaping = false;
+            else
+                if (text[*index_in_text+string_length] == '\\')
+                    escaping = true;
+
             ++string_length;
         }
 
         // we found the end of the string
         text[*index_in_text+string_length] = '\0';
 
-        if (!unescape_string(text+(*index_in_text))) {
-            create_parsing_error(
-                "The string '%s' at %s:%d:%d could not be unescaped.",
-                text+(*index_in_text), parser_file, parser_line, parser_col);
-            return nullptr;
-        }
+        // NOTE(Felix): Tactic: Through unescaping the string will
+        // only get shorter, so we replace it inplace and later jump
+        // to the original end of the string.
+        try unescape_string(text+(*index_in_text));
 
         String* string = Memory::create_string("", string_length);
 
@@ -415,9 +419,9 @@ namespace Parser {
                 }
 
                 // we are now in the function body, just wrap it in an
-                // implicit prog
+                // implicit begin
                 try macro->value.function.body = Memory::create_lisp_object_pair(
-                    Memory::get_or_create_lisp_object_symbol("prog"),
+                    Memory::get_or_create_lisp_object_symbol("begin"),
                     body);
 
                 // macro->value.function = function;

src/slime.h

@@ -2,6 +2,8 @@
 
 #define _CRT_SECURE_NO_WARNINGS
 #define _CRT_SECURE_NO_DEPRECATE
+#include <stdlib.h>
+#include <unistd.h>
 #include <stdio.h>
 #include <time.h>
 #include <string.h>

src/structs.cpp

@@ -98,7 +98,7 @@ struct Function {
     Keyword_Arguments*    keyword_arguments;
     // rest_argument will be nullptr if no rest argument is declared
     String*      rest_argument;
-    Lisp_Object* body; // implicit prog
+    Lisp_Object* body; // implicit begin
     Environment* parent_environment; // we are doing closures now!!
 };
 

src/testing.cpp

@@ -493,7 +493,7 @@ proc test_built_in_type() -> testresult {
     try env = Memory::create_built_ins_environment();
 
     // normal type testing
-    char exp_string1[] = "(prog (define a 10)(type a))";
+    char exp_string1[] = "(begin (define a 10)(type a))";
     Lisp_Object* expression = Parser::parse_single_expression(exp_string1);
     Lisp_Object* result = eval_expr(expression, env);
 
@@ -503,7 +503,7 @@ proc test_built_in_type() -> testresult {
     assert_equal_string(result->value.symbol.identifier, "number");
 
     // setting user type
-    char exp_string2[] = "(prog (set-type a :my-type)(type a))";
+    char exp_string2[] = "(begin (set-type a :my-type)(type a))";
     expression = Parser::parse_single_expression(exp_string2);
     result = eval_expr(expression, env);
 
@@ -513,7 +513,7 @@ proc test_built_in_type() -> testresult {
     assert_equal_string(result->value.symbol.identifier, "my-type");
 
     // trying to set invalid user type
-    char exp_string3[] = "(prog (set-type a \"wrong tpye\")(type a))";
+    char exp_string3[] = "(begin (set-type a \"wrong tpye\")(type a))";
     expression = Parser::parse_single_expression(exp_string3);
 
     without_logging {
@@ -524,7 +524,7 @@ proc test_built_in_type() -> testresult {
     delete_error();
 
     // deleting user type
-    char exp_string4[] = "(prog (delete-type a)(type a))";
+    char exp_string4[] = "(begin (delete-type a)(type a))";
     expression = Parser::parse_single_expression(exp_string4);
     result = eval_expr(expression, env);
 
@@ -598,6 +598,13 @@ proc run_all_tests() -> bool {
     Memory::init(4096 * 2000, 1024, 4096 * 16);
     Parser::environment_for_macros = Globals::root_environment;
 
+    // get the direction of the exe
+    char* exe_path = exe_dir();
+
+    // switch to the exe directory for loading pre.slime
+    chdir(exe_path);
+    free(exe_path);
+
     bool result = true;
 
     printf("-- Util --\n");

src/visualization.cpp

@@ -1,4 +1,19 @@
 proc visualize_lisp_machine() -> void {
+
+    // save the current working directory
+    char cwd[1024];
+    getcwd(cwd, 1024);
+    // get the direction of the exe
+    char* exe_path = exe_dir();
+    // switch to the exe directory for loading pre.slime
+    chdir(exe_path);
+    free(exe_path);
+
+    defer {
+        // switch back to the users directory
+        chdir(cwd);
+    };
+
     struct Drawn_Area {
         int x;
         int y;

todo.org

@@ -1,6 +1,7 @@
 * TODO rename slime to plisk
 * TODO go through sicp and use the examples as test files
 * TODO test macro expanding to macro
+* TODO create global environment- and callstack
 * TODO BUG 1: eval dot notation
 #+BEGIN_SRC lisp
   (eval `(+ . ,(list 1 2 3)))
@@ -10,7 +11,7 @@
 
 * TODO BUG 2: eval dot notation
 #+BEGIN_SRC lisp
-  (prog
+  (begin
    (define a (list 1 2 3))
    (eval `(+ . ,a)))
   ;; should output 6