%# -*- C -*-
%# Copyright (c) 2017 Urabe, Shyouhei.  All rights reserved.
%#
%# This file is a part of  the programming language Ruby.  Permission is hereby
%# granted, to either  redistribute and/or modify this file,  provided that the
%# conditions mentioned  in the  file COPYING  are met.   Consult the  file for
%# details.
%
% a = RubyVM::Instructions.map {|i| i.operands_info }
% b = (0...a.size)
% c = a.inject([0]) {|r, i| r << (r[-1] + i.length + 1) }
% c.pop
%
CONSTFUNC(MAYBE_UNUSED(static const char *insn_op_types(VALUE insn)));
CONSTFUNC(MAYBE_UNUSED(static int insn_op_type(VALUE insn, long pos)));

RUBY_SYMBOL_EXPORT_BEGIN /* for debuggers */
extern const char rb_vm_insn_op_base[];
extern const unsigned short rb_vm_insn_op_offset[VM_INSTRUCTION_SIZE];
RUBY_SYMBOL_EXPORT_END

#ifdef RUBY_VM_INSNS_INFO
const char rb_vm_insn_op_base[] =
% a.each_slice 5 do |d|
    <%= d.map {|i| sprintf("%-6s", cstr(i)) }.join(' "\0" ') %> "\0"
% end
    ;

const unsigned short rb_vm_insn_op_offset[] = {
% c.each_slice 12 do |d|
    <%= d.map {|i| sprintf("%3d", i) }.join(', ') %>,
% end
};

ASSERT_VM_INSTRUCTION_SIZE(rb_vm_insn_op_offset);
#endif

const char *
insn_op_types(VALUE i)
{
    return &rb_vm_insn_op_base[rb_vm_insn_op_offset[i]];
}

int
insn_op_type(VALUE i, long j)
{
    if (j >= insn_len(i)) {
        return 0;
    }
    else {
        return insn_op_types(i)[j];
    }
}