Move mirb and mruby to mrbgems.

4 files changed, 667 insertions, 0 deletions

diff --git a/mrbgems/mruby-tool-mirb/mrbgem.rake b/mrbgems/mruby-tool-mirb/mrbgem.rake
new file mode 100644
index 000000000..d4296319e
--- /dev/null
+++ b/mrbgems/mruby-tool-mirb/mrbgem.rake
@@ -0,0 +1,5 @@
+MRuby::Gem::Specification.new('mruby-tool-mirb') do |spec|
+  spec.license = 'MIT'
+  spec.authors = 'mruby developers'
+  spec.bins = %w(mirb)
+end
diff --git a/mrbgems/mruby-tool-mirb/tools/mirb/mirb.c b/mrbgems/mruby-tool-mirb/tools/mirb/mirb.c
new file mode 100644
index 000000000..cde0b0d4b
--- /dev/null
+++ b/mrbgems/mruby-tool-mirb/tools/mirb/mirb.c
@@ -0,0 +1,350 @@
+/*
+** mirb - Embeddable Interactive Ruby Shell
+**
+** This program takes code from the user in
+** an interactive way and executes it
+** immediately. It's a REPL...
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <mruby.h>
+#include "mruby/array.h"
+#include <mruby/proc.h>
+#include <mruby/data.h>
+#include <mruby/compile.h>
+#ifdef ENABLE_READLINE
+#include <readline/readline.h>
+#include <readline/history.h>
+#endif
+
+#ifndef ENABLE_STDIO
+#include <mruby/string.h>
+static void
+p(mrb_state *mrb, mrb_value obj)
+{
+  obj = mrb_funcall(mrb, obj, "inspect", 0);
+  fwrite(RSTRING_PTR(obj), RSTRING_LEN(obj), 1, stdout);
+  putc('\n', stdout);
+}
+#else
+#define p(mrb,obj) mrb_p(mrb,obj)
+#endif
+
+/* Guess if the user might want to enter more
+ * or if he wants an evaluation of his code now */
+int
+is_code_block_open(struct mrb_parser_state *parser)
+{
+  int code_block_open = FALSE;
+
+  /* check for heredoc */
+  if (parser->parsing_heredoc != NULL) return TRUE;
+  if (parser->heredoc_end_now) {
+    parser->heredoc_end_now = FALSE;
+    return FALSE;
+  }
+
+  /* check if parser error are available */
+  if (0 < parser->nerr) {
+    const char *unexpected_end = "syntax error, unexpected $end";
+    const char *message = parser->error_buffer[0].message;
+
+    /* a parser error occur, we have to check if */
+    /* we need to read one more line or if there is */
+    /* a different issue which we have to show to */
+    /* the user */
+
+    if (strncmp(message, unexpected_end, strlen(unexpected_end)) == 0) {
+      code_block_open = TRUE;
+    }
+    else if (strcmp(message, "syntax error, unexpected keyword_end") == 0) {
+      code_block_open = FALSE;
+    }
+    else if (strcmp(message, "syntax error, unexpected tREGEXP_BEG") == 0) {
+      code_block_open = FALSE;
+    }
+    return code_block_open;
+  }
+
+  /* check for unterminated string */
+  if (parser->lex_strterm) return TRUE;
+
+  switch (parser->lstate) {
+
+  /* all states which need more code */
+
+  case EXPR_BEG:
+    /* an expression was just started, */
+    /* we can't end it like this */
+    code_block_open = TRUE;
+    break;
+  case EXPR_DOT:
+    /* a message dot was the last token, */
+    /* there has to come more */
+    code_block_open = TRUE;
+    break;
+  case EXPR_CLASS:
+    /* a class keyword is not enough! */
+    /* we need also a name of the class */
+    code_block_open = TRUE;
+    break;
+  case EXPR_FNAME:
+    /* a method name is necessary */
+    code_block_open = TRUE;
+    break;
+  case EXPR_VALUE:
+    /* if, elsif, etc. without condition */
+    code_block_open = TRUE;
+    break;
+
+  /* now all the states which are closed */
+
+  case EXPR_ARG:
+    /* an argument is the last token */
+    code_block_open = FALSE;
+    break;
+
+  /* all states which are unsure */
+
+  case EXPR_CMDARG:
+    break;
+  case EXPR_END:
+    /* an expression was ended */
+    break;
+  case EXPR_ENDARG:
+    /* closing parenthese */
+    break;
+  case EXPR_ENDFN:
+    /* definition end */
+    break;
+  case EXPR_MID:
+    /* jump keyword like break, return, ... */
+    break;
+  case EXPR_MAX_STATE:
+    /* don't know what to do with this token */
+    break;
+  default:
+    /* this state is unexpected! */
+    break;
+  }
+
+  return code_block_open;
+}
+
+void mrb_show_version(mrb_state *);
+void mrb_show_copyright(mrb_state *);
+
+struct _args {
+  int argc;
+  char** argv;
+};
+
+static void
+usage(const char *name)
+{
+  static const char *const usage_msg[] = {
+  "switches:",
+  "--version    print the version",
+  "--copyright  print the copyright",
+  NULL
+  };
+  const char *const *p = usage_msg;
+
+  printf("Usage: %s [switches]\n", name);
+  while(*p)
+    printf("  %s\n", *p++);
+}
+
+static int
+parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
+{
+  static const struct _args args_zero = { 0 };
+
+  *args = args_zero;
+
+  for (argc--,argv++; argc > 0; argc--,argv++) {
+    char *item;
+    if (argv[0][0] != '-') break;
+
+    item = argv[0] + 1;
+    switch (*item++) {
+    case '-':
+      if (strcmp((*argv) + 2, "version") == 0) {
+        mrb_show_version(mrb);
+        exit(EXIT_SUCCESS);
+      }
+      else if (strcmp((*argv) + 2, "copyright") == 0) {
+        mrb_show_copyright(mrb);
+        exit(EXIT_SUCCESS);
+      }
+    default:
+      return EXIT_FAILURE;
+    }
+  }
+  return EXIT_SUCCESS;
+}
+
+static void
+cleanup(mrb_state *mrb, struct _args *args)
+{
+  mrb_close(mrb);
+}
+
+/* Print a short remark for the user */
+static void
+print_hint(void)
+{
+  printf("mirb - Embeddable Interactive Ruby Shell\n");
+  printf("\nThis is a very early version, please test and report errors.\n");
+  printf("Thanks :)\n\n");
+}
+
+/* Print the command line prompt of the REPL */
+void
+print_cmdline(int code_block_open)
+{
+  if (code_block_open) {
+    printf("* ");
+  }
+  else {
+    printf("> ");
+  }
+}
+
+int
+main(int argc, char **argv)
+{
+  char ruby_code[1024] = { 0 };
+  char last_code_line[1024] = { 0 };
+#ifndef ENABLE_READLINE
+  int last_char;
+  int char_index;
+#endif
+  mrbc_context *cxt;
+  struct mrb_parser_state *parser;
+  mrb_state *mrb;
+  mrb_value result;
+  struct _args args;
+  int n;
+  int code_block_open = FALSE;
+  int ai;
+
+  /* new interpreter instance */
+  mrb = mrb_open();
+  if (mrb == NULL) {
+    fputs("Invalid mrb interpreter, exiting mirb\n", stderr);
+    return EXIT_FAILURE;
+  }
+  mrb_define_global_const(mrb, "ARGV", mrb_ary_new_capa(mrb, 0));
+
+  n = parse_args(mrb, argc, argv, &args);
+  if (n == EXIT_FAILURE) {
+    cleanup(mrb, &args);
+    usage(argv[0]);
+    return n;
+  }
+
+  print_hint();
+
+  cxt = mrbc_context_new(mrb);
+  cxt->capture_errors = 1;
+
+  ai = mrb_gc_arena_save(mrb);
+  while (TRUE) {
+#ifndef ENABLE_READLINE
+    print_cmdline(code_block_open);
+
+    char_index = 0;
+    while ((last_char = getchar()) != '\n') {
+      if (last_char == EOF) break;
+      last_code_line[char_index++] = last_char;
+    }
+    if (last_char == EOF) {
+      fputs("\n", stdout);
+      break;
+    }
+
+    last_code_line[char_index] = '\0';
+#else
+    char* line = readline(code_block_open ? "* " : "> ");
+    if(line == NULL) {
+      printf("\n");
+      break;
+    }
+    strncpy(last_code_line, line, sizeof(last_code_line)-1);
+    add_history(line);
+    free(line);
+#endif
+
+    if ((strcmp(last_code_line, "quit") == 0) || (strcmp(last_code_line, "exit") == 0)) {
+      if (!code_block_open) {
+        break;
+      }
+      else{
+        /* count the quit/exit commands as strings if in a quote block */
+        strcat(ruby_code, "\n");
+        strcat(ruby_code, last_code_line);
+      }
+    }
+    else {
+      if (code_block_open) {
+        strcat(ruby_code, "\n");
+        strcat(ruby_code, last_code_line);
+      }
+      else {
+        strcpy(ruby_code, last_code_line);
+      }
+    }
+
+    /* parse code */
+    parser = mrb_parser_new(mrb);
+    parser->s = ruby_code;
+    parser->send = ruby_code + strlen(ruby_code);
+    parser->lineno = 1;
+    mrb_parser_parse(parser, cxt);
+    code_block_open = is_code_block_open(parser);
+
+    if (code_block_open) {
+      /* no evaluation of code */
+    }
+    else {
+      if (0 < parser->nerr) {
+        /* syntax error */
+        printf("line %d: %s\n", parser->error_buffer[0].lineno, parser->error_buffer[0].message);
+      }
+      else {
+        /* generate bytecode */
+        n = mrb_generate_code(mrb, parser);
+
+        /* evaluate the bytecode */
+        result = mrb_run(mrb,
+            /* pass a proc for evaulation */
+            mrb_proc_new(mrb, mrb->irep[n]),
+            mrb_top_self(mrb));
+        /* did an exception occur? */
+        if (mrb->exc) {
+          p(mrb, mrb_obj_value(mrb->exc));
+          mrb->exc = 0;
+        }
+        else {
+          /* no */
+          printf(" => ");
+          if (!mrb_respond_to(mrb,result,mrb_intern(mrb,"inspect"))){
+            result = mrb_any_to_s(mrb,result);
+          }
+          p(mrb, result);
+        }
+      }
+      ruby_code[0] = '\0';
+      last_code_line[0] = '\0';
+      mrb_gc_arena_restore(mrb, ai);
+    }
+    mrb_parser_free(parser);
+  }
+  mrbc_context_free(mrb, cxt);
+  mrb_close(mrb);
+
+  return 0;
+}
diff --git a/mrbgems/mruby-tool-mruby/mrbgem.rake b/mrbgems/mruby-tool-mruby/mrbgem.rake
new file mode 100644
index 000000000..6e6d57b00
--- /dev/null
+++ b/mrbgems/mruby-tool-mruby/mrbgem.rake
@@ -0,0 +1,5 @@
+MRuby::Gem::Specification.new('mruby-tool-mruby') do |spec|
+  spec.license = 'MIT'
+  spec.authors = 'mruby developers'
+  spec.bins = %w(mruby)
+end
diff --git a/mrbgems/mruby-tool-mruby/tools/mruby/mruby.c b/mrbgems/mruby-tool-mruby/tools/mruby/mruby.c
new file mode 100644
index 000000000..b8d82b270
--- /dev/null
+++ b/mrbgems/mruby-tool-mruby/tools/mruby/mruby.c
@@ -0,0 +1,307 @@
+#include "mruby.h"
+#include "mruby/proc.h"
+#include "mruby/array.h"
+#include "mruby/string.h"
+#include "mruby/compile.h"
+#include "mruby/dump.h"
+#include "mruby/variable.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef ENABLE_STDIO
+static void
+p(mrb_state *mrb, mrb_value obj)
+{
+  obj = mrb_funcall(mrb, obj, "inspect", 0);
+  fwrite(RSTRING_PTR(obj), RSTRING_LEN(obj), 1, stdout);
+  putc('\n', stdout);
+}
+#else
+#define p(mrb,obj) mrb_p(mrb,obj)
+#endif
+
+void mrb_show_version(mrb_state *);
+void mrb_show_copyright(mrb_state *);
+
+struct _args {
+  FILE *rfp;
+  char* cmdline;
+  mrb_bool fname        : 1;
+  mrb_bool mrbfile      : 1;
+  mrb_bool check_syntax : 1;
+  mrb_bool verbose      : 1;
+  int argc;
+  char** argv;
+};
+
+static void
+usage(const char *name)
+{
+  static const char *const usage_msg[] = {
+  "switches:",
+  "-b           load and execute RiteBinary (mrb) file",
+  "-c           check syntax only",
+  "-e 'command' one line of script",
+  "-v           print version number, then run in verbose mode",
+  "--verbose    run in verbose mode",
+  "--version    print the version",
+  "--copyright  print the copyright",
+  NULL
+  };
+  const char *const *p = usage_msg;
+
+  printf("Usage: %s [switches] programfile\n", name);
+  while(*p)
+    printf("  %s\n", *p++);
+}
+
+static int
+parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
+{
+  char **origargv = argv;
+  static const struct _args args_zero = { 0 };
+
+  *args = args_zero;
+
+  for (argc--,argv++; argc > 0; argc--,argv++) {
+    char *item;
+    if (argv[0][0] != '-') break;
+
+    if (strlen(*argv) <= 1) {
+      argc--; argv++;
+      args->rfp = stdin;
+      break;
+    }
+
+    item = argv[0] + 1;
+    switch (*item++) {
+    case 'b':
+      args->mrbfile = 1;
+      break;
+    case 'c':
+      args->check_syntax = 1;
+      break;
+    case 'e':
+      if (item[0]) {
+        goto append_cmdline;
+      }
+      else if (argc > 1) {
+        argc--; argv++;
+        item = argv[0];
+append_cmdline:
+        if (!args->cmdline) {
+          char *buf;
+
+          buf = (char *)mrb_malloc(mrb, strlen(item)+1);
+          strcpy(buf, item);
+          args->cmdline = buf;
+        }
+        else {
+          args->cmdline = (char *)mrb_realloc(mrb, args->cmdline, strlen(args->cmdline)+strlen(item)+2);
+          strcat(args->cmdline, "\n");
+          strcat(args->cmdline, item);
+        }
+      }
+      else {
+        printf("%s: No code specified for -e\n", *origargv);
+        return EXIT_SUCCESS;
+      }
+      break;
+    case 'v':
+      if (!args->verbose) mrb_show_version(mrb);
+      args->verbose = 1;
+      break;
+    case '-':
+      if (strcmp((*argv) + 2, "version") == 0) {
+        mrb_show_version(mrb);
+        exit(EXIT_SUCCESS);
+      }
+      else if (strcmp((*argv) + 2, "verbose") == 0) {
+        args->verbose = 1;
+        break;
+      }
+      else if (strcmp((*argv) + 2, "copyright") == 0) {
+        mrb_show_copyright(mrb);
+        exit(EXIT_SUCCESS);
+      }
+    default:
+      return EXIT_FAILURE;
+    }
+  }
+
+  if (args->rfp == NULL && args->cmdline == NULL) {
+    if (*argv == NULL) args->rfp = stdin;
+    else {
+      args->rfp = fopen(argv[0], args->mrbfile ? "rb" : "r");
+      if (args->rfp == NULL) {
+        printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
+        return 0;
+      }
+      args->fname = 1;
+      args->cmdline = argv[0];
+      argc--; argv++;
+    }
+  }
+  args->argv = (char **)mrb_realloc(mrb, args->argv, sizeof(char*) * (argc + 1));
+  memcpy(args->argv, argv, (argc+1) * sizeof(char*));
+  args->argc = argc;
+
+  return EXIT_SUCCESS;
+}
+
+static void
+cleanup(mrb_state *mrb, struct _args *args)
+{
+  if (args->rfp && args->rfp != stdin)
+    fclose(args->rfp);
+  if (args->cmdline && !args->fname)
+    mrb_free(mrb, args->cmdline);
+  if (args->argv)
+    mrb_free(mrb, args->argv);
+  mrb_close(mrb);
+}
+
+static void
+showcallinfo(mrb_state *mrb)
+{
+  mrb_callinfo *ci;
+  mrb_int ciidx;
+  const char *filename, *method, *sep;
+  int i, line;
+
+  printf("trace:\n");
+  ciidx = mrb_fixnum(mrb_obj_iv_get(mrb, mrb->exc, mrb_intern(mrb, "ciidx")));
+  if (ciidx >= mrb->ciend - mrb->cibase)
+    ciidx = 10; /* ciidx is broken... */
+
+  for (i = ciidx; i >= 0; i--) {
+    ci = &mrb->cibase[i];
+    filename = "(unknown)";
+    line = -1;
+
+    if (MRB_PROC_CFUNC_P(ci->proc)) {
+      continue;
+    }
+    else {
+      mrb_irep *irep = ci->proc->body.irep;
+      if (irep->filename != NULL)
+        filename = irep->filename;
+      if (irep->lines != NULL) {
+        mrb_code *pc;
+
+        if (i+1 <= ciidx) {
+          pc = mrb->cibase[i+1].pc;
+        }
+        else {
+          pc = (mrb_code*)mrb_voidp(mrb_obj_iv_get(mrb, mrb->exc, mrb_intern(mrb, "lastpc")));
+        }
+        if (irep->iseq <= pc && pc < irep->iseq + irep->ilen) {
+          line = irep->lines[pc - irep->iseq - 1];
+        }
+      }
+    }
+    if (line == -1) continue;
+    if (ci->target_class == ci->proc->target_class)
+      sep = ".";
+    else
+      sep = "#";
+
+    method = mrb_sym2name(mrb, ci->mid);
+    if (method) {
+      const char *cn = mrb_class_name(mrb, ci->proc->target_class);
+
+      if (cn) {
+        printf("\t[%d] %s:%d:in %s%s%s\n", i, filename, line, cn, sep, method);
+      }
+      else {
+        printf("\t[%d] %s:%d:in %s\n", i, filename, line, method);
+      }
+    }
+    else {
+      printf("\t[%d] %s:%d\n", i, filename, line);
+    }
+  }
+}
+
+int
+main(int argc, char **argv)
+{
+  mrb_state *mrb = mrb_open();
+  int n = -1;
+  int i;
+  struct _args args;
+  mrb_value ARGV;
+
+  if (mrb == NULL) {
+    fputs("Invalid mrb_state, exiting mruby\n", stderr);
+    return EXIT_FAILURE;
+  }
+
+  n = parse_args(mrb, argc, argv, &args);
+  if (n == EXIT_FAILURE || (args.cmdline == NULL && args.rfp == NULL)) {
+    cleanup(mrb, &args);
+    usage(argv[0]);
+    return n;
+  }
+
+  ARGV = mrb_ary_new_capa(mrb, args.argc);
+  for (i = 0; i < args.argc; i++) {
+    mrb_ary_push(mrb, ARGV, mrb_str_new(mrb, args.argv[i], strlen(args.argv[i])));
+  }
+  mrb_define_global_const(mrb, "ARGV", ARGV);
+
+  if (args.mrbfile) {
+    n = mrb_read_irep_file(mrb, args.rfp);
+    if (n < 0) {
+      fprintf(stderr, "failed to load mrb file: %s\n", args.cmdline);
+    }
+    else if (!args.check_syntax) {
+      mrb_run(mrb, mrb_proc_new(mrb, mrb->irep[n]), mrb_top_self(mrb));
+      n = 0;
+      if (mrb->exc) {
+        showcallinfo(mrb);
+        p(mrb, mrb_obj_value(mrb->exc));
+        n = -1;
+      }
+    }
+  }
+  else {
+    mrbc_context *c = mrbc_context_new(mrb);
+    mrb_sym zero_sym = mrb_intern2(mrb, "$0", 2);
+    mrb_value v;
+
+    if (args.verbose)
+      c->dump_result = 1;
+    if (args.check_syntax)
+      c->no_exec = 1;
+
+    if (args.rfp) {
+      char *cmdline;
+      cmdline = args.cmdline ? args.cmdline : "-";
+      mrbc_filename(mrb, c, cmdline);
+      mrb_gv_set(mrb, zero_sym, mrb_str_new_cstr(mrb, cmdline));
+      v = mrb_load_file_cxt(mrb, args.rfp, c);
+    }
+    else {
+      mrbc_filename(mrb, c, "-e");
+      mrb_gv_set(mrb, zero_sym, mrb_str_new(mrb, "-e", 2));
+      v = mrb_load_string_cxt(mrb, args.cmdline, c);
+    }
+
+    mrbc_context_free(mrb, c);
+    if (mrb->exc) {
+      if (!mrb_undef_p(v)) {
+        showcallinfo(mrb);
+        p(mrb, mrb_obj_value(mrb->exc));
+      }
+      n = -1;
+    }
+    else if (args.check_syntax) {
+      printf("Syntax OK\n");
+    }
+  }
+  cleanup(mrb, &args);
+
+  return n == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}