Module: MRubyTools::C

Defined in:
lib/mruby_tools.rb

Class Method Summary collapse

Class Method Details

.bytecode_wrapper(bc_file) ⇒ Object 



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# File 'lib/mruby_tools.rb', line 71

def self.bytecode_wrapper(bc_file)
  c_code = <<'EOF'
#include <stdlib.h>
#include <stdint.h>
#include <mruby.h>
#include <mruby/string.h>
#include <mruby/irep.h>

const uint8_t
#if defined __GNUC__
__attribute__((aligned(4)))
#elif defined _MSC_VER
__declspec(align(4))
#endif
EOF
  c_code += slurp_mrb(bc_file, indent: '') + "\n\n"

  c_code += <<'EOF'
void check_exc(mrb_state *mrb) {
  if (mrb->exc) {
mrb_value exc = mrb_obj_value(mrb->exc);
mrb_value exc_msg = mrb_funcall(mrb, exc, "to_s", 0);
fprintf(stderr, "ERROR %s: %s\n",
        mrb_obj_classname(mrb, exc),
        mrb_str_to_cstr(mrb, exc_msg));
/* mrb_print_backtrace(mrb);   # empty */
exit(1);
  }
}

int
main(void)
{
  mrb_state *mrb = mrb_open();
  if (!mrb) {
printf("mrb problem");
exit(1);
  }
  mrb_load_irep(mrb, test_symbol);
  check_exc(mrb);
  mrb_close(mrb);
  return 0;
}
EOF
  c_code
end

.slurp_mrb(bc_file, indent: ' ') ⇒ Object 



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# File 'lib/mruby_tools.rb', line 50

def self.slurp_mrb(bc_file, indent: '  ')
  test_symbol = File.read(bc_file).each_byte.reduce('') { |memo, b|
    memo + format("0x%0.2x,", b.ord)
  }
  ["/* #{bc_file} */",
   "test_symbol[] = {",
   test_symbol,
   "};",
  ].map { |s| indent + s }.join("\n")
end

.slurp_rb(rb_filename, indent: ' ') ⇒ Object 



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# File 'lib/mruby_tools.rb', line 61

def self.slurp_rb(rb_filename, indent: '  ')
  c_str = File.read(rb_filename)
  size = c_str.size
  c_str = c_str.gsub("\n", '\n').gsub('"', '\"')
  [ "/* #{rb_filename} */",
    'mrb_load_nstring(mrb, "' + c_str + '", ' + "#{size});",
    "check_exc(mrb, \"#{rb_filename}\");",
  ].map { |s| indent + s }.join("\n")
end

.wrapper(rb_files) ⇒ Object 



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# File 'lib/mruby_tools.rb', line 118

def self.wrapper(rb_files)
  c_code = <<'EOF'
#include <stdlib.h>
#include <mruby.h>
#include <mruby/compile.h>
#include <mruby/string.h>

void check_exc(mrb_state *mrb, char *filename) {
  if (mrb->exc) {
mrb_value exc = mrb_obj_value(mrb->exc);
mrb_value exc_msg = mrb_funcall(mrb, exc, "to_s", 0);
fprintf(stderr, "ERROR in %s - %s: %s\n",
        filename,
        mrb_obj_classname(mrb, exc),
        mrb_str_to_cstr(mrb, exc_msg));
/* mrb_print_backtrace(mrb);   # empty */
exit(1);
  }
}

int
main(void)
{
  mrb_state *mrb = mrb_open();
  if (!mrb) {
printf("mrb problem");
exit(1);
  }
EOF
  c_code += rb_files.map { |rbf|
    "\n" + self.slurp_rb(rbf) + "\n\n"
  }.join

  c_code += <<EOF
  mrb_close(mrb);
  return 0;
}
EOF
  c_code
end