diff --git a/tools/pioasm/gen/parser.hpp b/tools/pioasm/gen/parser.hpp
new file mode 100644
index 0000000..11d8393
--- /dev/null
+++ b/tools/pioasm/gen/parser.hpp
@@ -0,0 +1,2894 @@
+// A Bison parser, made by GNU Bison 3.7.2.
+
+// Skeleton interface for Bison LALR(1) parsers in C++
+
+// Copyright (C) 2002-2015, 2018-2020 Free Software Foundation, Inc.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// As a special exception, you may create a larger work that contains
+// part or all of the Bison parser skeleton and distribute that work
+// under terms of your choice, so long as that work isn't itself a
+// parser generator using the skeleton or a modified version thereof
+// as a parser skeleton.  Alternatively, if you modify or redistribute
+// the parser skeleton itself, you may (at your option) remove this
+// special exception, which will cause the skeleton and the resulting
+// Bison output files to be licensed under the GNU General Public
+// License without this special exception.
+
+// This special exception was added by the Free Software Foundation in
+// version 2.2 of Bison.
+
+
+/**
+ ** \file pico_sdk/tools/pioasm/gen/parser.hpp
+ ** Define the yy::parser class.
+ */
+
+// C++ LALR(1) parser skeleton written by Akim Demaille.
+
+// DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
+// especially those whose name start with YY_ or yy_.  They are
+// private implementation details that can be changed or removed.
+
+#ifndef YY_YY_HOME_GRAHAM_DEV_MU_PICO_SDK_TOOLS_PIOASM_GEN_PARSER_HPP_INCLUDED
+# define YY_YY_HOME_GRAHAM_DEV_MU_PICO_SDK_TOOLS_PIOASM_GEN_PARSER_HPP_INCLUDED
+// "%code requires" blocks.
+
+  #include <string>
+  #include <fstream>
+  #include <sstream>
+  #include "pio_types.h"
+  struct pio_assembler;
+
+  #ifdef _MSC_VER
+  #pragma warning(disable : 4065) // default only switch statement
+  #endif
+
+
+
+# include <cstdlib> // std::abort
+# include <iostream>
+# include <stdexcept>
+# include <string>
+# include <vector>
+
+#if defined __cplusplus
+# define YY_CPLUSPLUS __cplusplus
+#else
+# define YY_CPLUSPLUS 199711L
+#endif
+
+// Support move semantics when possible.
+#if 201103L <= YY_CPLUSPLUS
+# define YY_MOVE           std::move
+# define YY_MOVE_OR_COPY   move
+# define YY_MOVE_REF(Type) Type&&
+# define YY_RVREF(Type)    Type&&
+# define YY_COPY(Type)     Type
+#else
+# define YY_MOVE
+# define YY_MOVE_OR_COPY   copy
+# define YY_MOVE_REF(Type) Type&
+# define YY_RVREF(Type)    const Type&
+# define YY_COPY(Type)     const Type&
+#endif
+
+// Support noexcept when possible.
+#if 201103L <= YY_CPLUSPLUS
+# define YY_NOEXCEPT noexcept
+# define YY_NOTHROW
+#else
+# define YY_NOEXCEPT
+# define YY_NOTHROW throw ()
+#endif
+
+// Support constexpr when possible.
+#if 201703 <= YY_CPLUSPLUS
+# define YY_CONSTEXPR constexpr
+#else
+# define YY_CONSTEXPR
+#endif
+# include "location.h"
+
+#ifndef YY_ASSERT
+# include <cassert>
+# define YY_ASSERT assert
+#endif
+
+
+#ifndef YY_ATTRIBUTE_PURE
+# if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define YY_ATTRIBUTE_PURE
+# endif
+#endif
+
+#ifndef YY_ATTRIBUTE_UNUSED
+# if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# else
+#  define YY_ATTRIBUTE_UNUSED
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(E) ((void) (E))
+#else
+# define YYUSE(E) /* empty */
+#endif
+
+#if defined __GNUC__ && ! defined __ICC && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
+/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                            \
+    _Pragma ("GCC diagnostic push")                                     \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")              \
+    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END      \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define YY_INITIAL_VALUE(Value) Value
+#endif
+#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END
+#endif
+#ifndef YY_INITIAL_VALUE
+# define YY_INITIAL_VALUE(Value) /* Nothing. */
+#endif
+
+#if defined __cplusplus && defined __GNUC__ && ! defined __ICC && 6 <= __GNUC__
+# define YY_IGNORE_USELESS_CAST_BEGIN                          \
+    _Pragma ("GCC diagnostic push")                            \
+    _Pragma ("GCC diagnostic ignored \"-Wuseless-cast\"")
+# define YY_IGNORE_USELESS_CAST_END            \
+    _Pragma ("GCC diagnostic pop")
+#endif
+#ifndef YY_IGNORE_USELESS_CAST_BEGIN
+# define YY_IGNORE_USELESS_CAST_BEGIN
+# define YY_IGNORE_USELESS_CAST_END
+#endif
+
+# ifndef YY_CAST
+#  ifdef __cplusplus
+#   define YY_CAST(Type, Val) static_cast<Type> (Val)
+#   define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type> (Val)
+#  else
+#   define YY_CAST(Type, Val) ((Type) (Val))
+#   define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val))
+#  endif
+# endif
+# ifndef YY_NULLPTR
+#  if defined __cplusplus
+#   if 201103L <= __cplusplus
+#    define YY_NULLPTR nullptr
+#   else
+#    define YY_NULLPTR 0
+#   endif
+#  else
+#   define YY_NULLPTR ((void*)0)
+#  endif
+# endif
+
+/* Debug traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 0
+#endif
+
+namespace yy {
+
+
+
+
+  /// A Bison parser.
+  class parser
+  {
+  public:
+#ifndef YYSTYPE
+  /// A buffer to store and retrieve objects.
+  ///
+  /// Sort of a variant, but does not keep track of the nature
+  /// of the stored data, since that knowledge is available
+  /// via the current parser state.
+  class semantic_type
+  {
+  public:
+    /// Type of *this.
+    typedef semantic_type self_type;
+
+    /// Empty construction.
+    semantic_type () YY_NOEXCEPT
+      : yybuffer_ ()
+    {}
+
+    /// Construct and fill.
+    template <typename T>
+    semantic_type (YY_RVREF (T) t)
+    {
+      YY_ASSERT (sizeof (T) <= size);
+      new (yyas_<T> ()) T (YY_MOVE (t));
+    }
+
+#if 201103L <= YY_CPLUSPLUS
+    /// Non copyable.
+    semantic_type (const self_type&) = delete;
+    /// Non copyable.
+    self_type& operator= (const self_type&) = delete;
+#endif
+
+    /// Destruction, allowed only if empty.
+    ~semantic_type () YY_NOEXCEPT
+    {}
+
+# if 201103L <= YY_CPLUSPLUS
+    /// Instantiate a \a T in here from \a t.
+    template <typename T, typename... U>
+    T&
+    emplace (U&&... u)
+    {
+      return *new (yyas_<T> ()) T (std::forward <U>(u)...);
+    }
+# else
+    /// Instantiate an empty \a T in here.
+    template <typename T>
+    T&
+    emplace ()
+    {
+      return *new (yyas_<T> ()) T ();
+    }
+
+    /// Instantiate a \a T in here from \a t.
+    template <typename T>
+    T&
+    emplace (const T& t)
+    {
+      return *new (yyas_<T> ()) T (t);
+    }
+# endif
+
+    /// Instantiate an empty \a T in here.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build ()
+    {
+      return emplace<T> ();
+    }
+
+    /// Instantiate a \a T in here from \a t.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build (const T& t)
+    {
+      return emplace<T> (t);
+    }
+
+    /// Accessor to a built \a T.
+    template <typename T>
+    T&
+    as () YY_NOEXCEPT
+    {
+      return *yyas_<T> ();
+    }
+
+    /// Const accessor to a built \a T (for %printer).
+    template <typename T>
+    const T&
+    as () const YY_NOEXCEPT
+    {
+      return *yyas_<T> ();
+    }
+
+    /// Swap the content with \a that, of same type.
+    ///
+    /// Both variants must be built beforehand, because swapping the actual
+    /// data requires reading it (with as()), and this is not possible on
+    /// unconstructed variants: it would require some dynamic testing, which
+    /// should not be the variant's responsibility.
+    /// Swapping between built and (possibly) non-built is done with
+    /// self_type::move ().
+    template <typename T>
+    void
+    swap (self_type& that) YY_NOEXCEPT
+    {
+      std::swap (as<T> (), that.as<T> ());
+    }
+
+    /// Move the content of \a that to this.
+    ///
+    /// Destroys \a that.
+    template <typename T>
+    void
+    move (self_type& that)
+    {
+# if 201103L <= YY_CPLUSPLUS
+      emplace<T> (std::move (that.as<T> ()));
+# else
+      emplace<T> ();
+      swap<T> (that);
+# endif
+      that.destroy<T> ();
+    }
+
+# if 201103L <= YY_CPLUSPLUS
+    /// Move the content of \a that to this.
+    template <typename T>
+    void
+    move (self_type&& that)
+    {
+      emplace<T> (std::move (that.as<T> ()));
+      that.destroy<T> ();
+    }
+#endif
+
+    /// Copy the content of \a that to this.
+    template <typename T>
+    void
+    copy (const self_type& that)
+    {
+      emplace<T> (that.as<T> ());
+    }
+
+    /// Destroy the stored \a T.
+    template <typename T>
+    void
+    destroy ()
+    {
+      as<T> ().~T ();
+    }
+
+  private:
+#if YY_CPLUSPLUS < 201103L
+    /// Non copyable.
+    semantic_type (const self_type&);
+    /// Non copyable.
+    self_type& operator= (const self_type&);
+#endif
+
+    /// Accessor to raw memory as \a T.
+    template <typename T>
+    T*
+    yyas_ () YY_NOEXCEPT
+    {
+      void *yyp = yybuffer_.yyraw;
+      return static_cast<T*> (yyp);
+     }
+
+    /// Const accessor to raw memory as \a T.
+    template <typename T>
+    const T*
+    yyas_ () const YY_NOEXCEPT
+    {
+      const void *yyp = yybuffer_.yyraw;
+      return static_cast<const T*> (yyp);
+     }
+
+    /// An auxiliary type to compute the largest semantic type.
+    union union_type
+    {
+      // if_full
+      // if_empty
+      // blocking
+      char dummy1[sizeof (bool)];
+
+      // condition
+      char dummy2[sizeof (enum condition)];
+
+      // in_source
+      // out_target
+      // set_target
+      char dummy3[sizeof (enum in_out_set)];
+
+      // irq_modifiers
+      char dummy4[sizeof (enum irq)];
+
+      // mov_target
+      // mov_source
+      char dummy5[sizeof (enum mov)];
+
+      // mov_op
+      char dummy6[sizeof (enum mov_op)];
+
+      // "integer"
+      char dummy7[sizeof (int)];
+
+      // instruction
+      // base_instruction
+      char dummy8[sizeof (std::shared_ptr<instruction>)];
+
+      // value
+      // expression
+      // delay
+      // sideset
+      char dummy9[sizeof (std::shared_ptr<resolvable>)];
+
+      // label_decl
+      // symbol_def
+      char dummy10[sizeof (std::shared_ptr<symbol>)];
+
+      // wait_source
+      char dummy11[sizeof (std::shared_ptr<wait_source>)];
+
+      // "identifier"
+      // "string"
+      // "text"
+      // "code block"
+      // "%}"
+      // UNKNOWN_DIRECTIVE
+      char dummy12[sizeof (std::string)];
+    };
+
+    /// The size of the largest semantic type.
+    enum { size = sizeof (union_type) };
+
+    /// A buffer to store semantic values.
+    union
+    {
+      /// Strongest alignment constraints.
+      long double yyalign_me;
+      /// A buffer large enough to store any of the semantic values.
+      char yyraw[size];
+    } yybuffer_;
+  };
+
+#else
+    typedef YYSTYPE semantic_type;
+#endif
+    /// Symbol locations.
+    typedef location location_type;
+
+    /// Syntax errors thrown from user actions.
+    struct syntax_error : std::runtime_error
+    {
+      syntax_error (const location_type& l, const std::string& m)
+        : std::runtime_error (m)
+        , location (l)
+      {}
+
+      syntax_error (const syntax_error& s)
+        : std::runtime_error (s.what ())
+        , location (s.location)
+      {}
+
+      ~syntax_error () YY_NOEXCEPT YY_NOTHROW;
+
+      location_type location;
+    };
+
+    /// Token kinds.
+    struct token
+    {
+      enum token_kind_type
+      {
+        TOK_YYEMPTY = -2,
+    TOK_END = 0,                   // "end of file"
+    TOK_YYerror = 256,             // error
+    TOK_YYUNDEF = 257,             // "invalid token"
+    TOK_NEWLINE = 258,             // "end of line"
+    TOK_COMMA = 259,               // ","
+    TOK_COLON = 260,               // ":"
+    TOK_LPAREN = 261,              // "("
+    TOK_RPAREN = 262,              // ")"
+    TOK_LBRACKET = 263,            // "["
+    TOK_RBRACKET = 264,            // "]"
+    TOK_PLUS = 265,                // "+"
+    TOK_MINUS = 266,               // "-"
+    TOK_MULTIPLY = 267,            // "*"
+    TOK_DIVIDE = 268,              // "/"
+    TOK_OR = 269,                  // "|"
+    TOK_AND = 270,                 // "&"
+    TOK_XOR = 271,                 // "^"
+    TOK_POST_DECREMENT = 272,      // "--"
+    TOK_NOT_EQUAL = 273,           // "!="
+    TOK_NOT = 274,                 // "!"
+    TOK_REVERSE = 275,             // "::"
+    TOK_EQUAL = 276,               // "="
+    TOK_PROGRAM = 277,             // ".program"
+    TOK_WRAP_TARGET = 278,         // ".wrap_target"
+    TOK_WRAP = 279,                // ".wrap"
+    TOK_DEFINE = 280,              // ".define"
+    TOK_SIDE_SET = 281,            // ".side_set"
+    TOK_WORD = 282,                // ".word"
+    TOK_ORIGIN = 283,              // ".origin"
+    TOK_LANG_OPT = 284,            // ".lang_opt"
+    TOK_JMP = 285,                 // "jmp"
+    TOK_WAIT = 286,                // "wait"
+    TOK_IN = 287,                  // "in"
+    TOK_OUT = 288,                 // "out"
+    TOK_PUSH = 289,                // "push"
+    TOK_PULL = 290,                // "pull"
+    TOK_MOV = 291,                 // "mov"
+    TOK_IRQ = 292,                 // "irq"
+    TOK_SET = 293,                 // "set"
+    TOK_NOP = 294,                 // "nop"
+    TOK_PIN = 295,                 // "pin"
+    TOK_GPIO = 296,                // "gpio"
+    TOK_OSRE = 297,                // "osre"
+    TOK_PINS = 298,                // "pins"
+    TOK_NULL = 299,                // "null"
+    TOK_PINDIRS = 300,             // "pindirs"
+    TOK_BLOCK = 301,               // "block"
+    TOK_NOBLOCK = 302,             // "noblock"
+    TOK_IFEMPTY = 303,             // "ifempty"
+    TOK_IFFULL = 304,              // "iffull"
+    TOK_NOWAIT = 305,              // "nowait"
+    TOK_CLEAR = 306,               // "clear"
+    TOK_REL = 307,                 // "rel"
+    TOK_X = 308,                   // "x"
+    TOK_Y = 309,                   // "y"
+    TOK_EXEC = 310,                // "exec"
+    TOK_PC = 311,                  // "pc"
+    TOK_ISR = 312,                 // "isr"
+    TOK_OSR = 313,                 // "osr"
+    TOK_OPTIONAL = 314,            // "opt"
+    TOK_SIDE = 315,                // "side"
+    TOK_STATUS = 316,              // "status"
+    TOK_PUBLIC = 317,              // "public"
+    TOK_ID = 318,                  // "identifier"
+    TOK_STRING = 319,              // "string"
+    TOK_NON_WS = 320,              // "text"
+    TOK_CODE_BLOCK_START = 321,    // "code block"
+    TOK_CODE_BLOCK_CONTENTS = 322, // "%}"
+    TOK_UNKNOWN_DIRECTIVE = 323,   // UNKNOWN_DIRECTIVE
+    TOK_INT = 324                  // "integer"
+      };
+      /// Backward compatibility alias (Bison 3.6).
+      typedef token_kind_type yytokentype;
+    };
+
+    /// Token kind, as returned by yylex.
+    typedef token::yytokentype token_kind_type;
+
+    /// Backward compatibility alias (Bison 3.6).
+    typedef token_kind_type token_type;
+
+    /// Symbol kinds.
+    struct symbol_kind
+    {
+      enum symbol_kind_type
+      {
+        YYNTOKENS = 70, ///< Number of tokens.
+        S_YYEMPTY = -2,
+        S_YYEOF = 0,                             // "end of file"
+        S_YYerror = 1,                           // error
+        S_YYUNDEF = 2,                           // "invalid token"
+        S_NEWLINE = 3,                           // "end of line"
+        S_COMMA = 4,                             // ","
+        S_COLON = 5,                             // ":"
+        S_LPAREN = 6,                            // "("
+        S_RPAREN = 7,                            // ")"
+        S_LBRACKET = 8,                          // "["
+        S_RBRACKET = 9,                          // "]"
+        S_PLUS = 10,                             // "+"
+        S_MINUS = 11,                            // "-"
+        S_MULTIPLY = 12,                         // "*"
+        S_DIVIDE = 13,                           // "/"
+        S_OR = 14,                               // "|"
+        S_AND = 15,                              // "&"
+        S_XOR = 16,                              // "^"
+        S_POST_DECREMENT = 17,                   // "--"
+        S_NOT_EQUAL = 18,                        // "!="
+        S_NOT = 19,                              // "!"
+        S_REVERSE = 20,                          // "::"
+        S_EQUAL = 21,                            // "="
+        S_PROGRAM = 22,                          // ".program"
+        S_WRAP_TARGET = 23,                      // ".wrap_target"
+        S_WRAP = 24,                             // ".wrap"
+        S_DEFINE = 25,                           // ".define"
+        S_SIDE_SET = 26,                         // ".side_set"
+        S_WORD = 27,                             // ".word"
+        S_ORIGIN = 28,                           // ".origin"
+        S_LANG_OPT = 29,                         // ".lang_opt"
+        S_JMP = 30,                              // "jmp"
+        S_WAIT = 31,                             // "wait"
+        S_IN = 32,                               // "in"
+        S_OUT = 33,                              // "out"
+        S_PUSH = 34,                             // "push"
+        S_PULL = 35,                             // "pull"
+        S_MOV = 36,                              // "mov"
+        S_IRQ = 37,                              // "irq"
+        S_SET = 38,                              // "set"
+        S_NOP = 39,                              // "nop"
+        S_PIN = 40,                              // "pin"
+        S_GPIO = 41,                             // "gpio"
+        S_OSRE = 42,                             // "osre"
+        S_PINS = 43,                             // "pins"
+        S_NULL = 44,                             // "null"
+        S_PINDIRS = 45,                          // "pindirs"
+        S_BLOCK = 46,                            // "block"
+        S_NOBLOCK = 47,                          // "noblock"
+        S_IFEMPTY = 48,                          // "ifempty"
+        S_IFFULL = 49,                           // "iffull"
+        S_NOWAIT = 50,                           // "nowait"
+        S_CLEAR = 51,                            // "clear"
+        S_REL = 52,                              // "rel"
+        S_X = 53,                                // "x"
+        S_Y = 54,                                // "y"
+        S_EXEC = 55,                             // "exec"
+        S_PC = 56,                               // "pc"
+        S_ISR = 57,                              // "isr"
+        S_OSR = 58,                              // "osr"
+        S_OPTIONAL = 59,                         // "opt"
+        S_SIDE = 60,                             // "side"
+        S_STATUS = 61,                           // "status"
+        S_PUBLIC = 62,                           // "public"
+        S_ID = 63,                               // "identifier"
+        S_STRING = 64,                           // "string"
+        S_NON_WS = 65,                           // "text"
+        S_CODE_BLOCK_START = 66,                 // "code block"
+        S_CODE_BLOCK_CONTENTS = 67,              // "%}"
+        S_UNKNOWN_DIRECTIVE = 68,                // UNKNOWN_DIRECTIVE
+        S_INT = 69,                              // "integer"
+        S_YYACCEPT = 70,                         // $accept
+        S_file = 71,                             // file
+        S_lines = 72,                            // lines
+        S_line = 73,                             // line
+        S_code_block = 74,                       // code_block
+        S_label_decl = 75,                       // label_decl
+        S_directive = 76,                        // directive
+        S_value = 77,                            // value
+        S_expression = 78,                       // expression
+        S_instruction = 79,                      // instruction
+        S_base_instruction = 80,                 // base_instruction
+        S_delay = 81,                            // delay
+        S_sideset = 82,                          // sideset
+        S_condition = 83,                        // condition
+        S_wait_source = 84,                      // wait_source
+        S_comma = 85,                            // comma
+        S_in_source = 86,                        // in_source
+        S_out_target = 87,                       // out_target
+        S_mov_target = 88,                       // mov_target
+        S_mov_source = 89,                       // mov_source
+        S_mov_op = 90,                           // mov_op
+        S_set_target = 91,                       // set_target
+        S_if_full = 92,                          // if_full
+        S_if_empty = 93,                         // if_empty
+        S_blocking = 94,                         // blocking
+        S_irq_modifiers = 95,                    // irq_modifiers
+        S_symbol_def = 96                        // symbol_def
+      };
+    };
+
+    /// (Internal) symbol kind.
+    typedef symbol_kind::symbol_kind_type symbol_kind_type;
+
+    /// The number of tokens.
+    static const symbol_kind_type YYNTOKENS = symbol_kind::YYNTOKENS;
+
+    /// A complete symbol.
+    ///
+    /// Expects its Base type to provide access to the symbol kind
+    /// via kind ().
+    ///
+    /// Provide access to semantic value and location.
+    template <typename Base>
+    struct basic_symbol : Base
+    {
+      /// Alias to Base.
+      typedef Base super_type;
+
+      /// Default constructor.
+      basic_symbol ()
+        : value ()
+        , location ()
+      {}
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Move constructor.
+      basic_symbol (basic_symbol&& that)
+        : Base (std::move (that))
+        , value ()
+        , location (std::move (that.location))
+      {
+        switch (this->kind ())
+    {
+      case symbol_kind::S_if_full: // if_full
+      case symbol_kind::S_if_empty: // if_empty
+      case symbol_kind::S_blocking: // blocking
+        value.move< bool > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_condition: // condition
+        value.move< enum condition > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_in_source: // in_source
+      case symbol_kind::S_out_target: // out_target
+      case symbol_kind::S_set_target: // set_target
+        value.move< enum in_out_set > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_irq_modifiers: // irq_modifiers
+        value.move< enum irq > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_mov_target: // mov_target
+      case symbol_kind::S_mov_source: // mov_source
+        value.move< enum mov > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_mov_op: // mov_op
+        value.move< enum mov_op > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_INT: // "integer"
+        value.move< int > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_instruction: // instruction
+      case symbol_kind::S_base_instruction: // base_instruction
+        value.move< std::shared_ptr<instruction> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_expression: // expression
+      case symbol_kind::S_delay: // delay
+      case symbol_kind::S_sideset: // sideset
+        value.move< std::shared_ptr<resolvable> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_label_decl: // label_decl
+      case symbol_kind::S_symbol_def: // symbol_def
+        value.move< std::shared_ptr<symbol> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_wait_source: // wait_source
+        value.move< std::shared_ptr<wait_source> > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_ID: // "identifier"
+      case symbol_kind::S_STRING: // "string"
+      case symbol_kind::S_NON_WS: // "text"
+      case symbol_kind::S_CODE_BLOCK_START: // "code block"
+      case symbol_kind::S_CODE_BLOCK_CONTENTS: // "%}"
+      case symbol_kind::S_UNKNOWN_DIRECTIVE: // UNKNOWN_DIRECTIVE
+        value.move< std::string > (std::move (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+      }
+#endif
+
+      /// Copy constructor.
+      basic_symbol (const basic_symbol& that);
+
+      /// Constructor for valueless symbols, and symbols from each type.
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, location_type&& l)
+        : Base (t)
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const location_type& l)
+        : Base (t)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, bool&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const bool& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, enum condition&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const enum condition& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, enum in_out_set&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const enum in_out_set& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, enum irq&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const enum irq& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, enum mov&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const enum mov& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, enum mov_op&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const enum mov_op& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, int&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const int& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::shared_ptr<instruction>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::shared_ptr<instruction>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::shared_ptr<resolvable>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::shared_ptr<resolvable>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::shared_ptr<symbol>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::shared_ptr<symbol>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::shared_ptr<wait_source>&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::shared_ptr<wait_source>& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::string&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::string& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+      /// Destroy the symbol.
+      ~basic_symbol ()
+      {
+        clear ();
+      }
+
+      /// Destroy contents, and record that is empty.
+      void clear ()
+      {
+        // User destructor.
+        symbol_kind_type yykind = this->kind ();
+        basic_symbol<Base>& yysym = *this;
+        (void) yysym;
+        switch (yykind)
+        {
+       default:
+          break;
+        }
+
+        // Value type destructor.
+switch (yykind)
+    {
+      case symbol_kind::S_if_full: // if_full
+      case symbol_kind::S_if_empty: // if_empty
+      case symbol_kind::S_blocking: // blocking
+        value.template destroy< bool > ();
+        break;
+
+      case symbol_kind::S_condition: // condition
+        value.template destroy< enum condition > ();
+        break;
+
+      case symbol_kind::S_in_source: // in_source
+      case symbol_kind::S_out_target: // out_target
+      case symbol_kind::S_set_target: // set_target
+        value.template destroy< enum in_out_set > ();
+        break;
+
+      case symbol_kind::S_irq_modifiers: // irq_modifiers
+        value.template destroy< enum irq > ();
+        break;
+
+      case symbol_kind::S_mov_target: // mov_target
+      case symbol_kind::S_mov_source: // mov_source
+        value.template destroy< enum mov > ();
+        break;
+
+      case symbol_kind::S_mov_op: // mov_op
+        value.template destroy< enum mov_op > ();
+        break;
+
+      case symbol_kind::S_INT: // "integer"
+        value.template destroy< int > ();
+        break;
+
+      case symbol_kind::S_instruction: // instruction
+      case symbol_kind::S_base_instruction: // base_instruction
+        value.template destroy< std::shared_ptr<instruction> > ();
+        break;
+
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_expression: // expression
+      case symbol_kind::S_delay: // delay
+      case symbol_kind::S_sideset: // sideset
+        value.template destroy< std::shared_ptr<resolvable> > ();
+        break;
+
+      case symbol_kind::S_label_decl: // label_decl
+      case symbol_kind::S_symbol_def: // symbol_def
+        value.template destroy< std::shared_ptr<symbol> > ();
+        break;
+
+      case symbol_kind::S_wait_source: // wait_source
+        value.template destroy< std::shared_ptr<wait_source> > ();
+        break;
+
+      case symbol_kind::S_ID: // "identifier"
+      case symbol_kind::S_STRING: // "string"
+      case symbol_kind::S_NON_WS: // "text"
+      case symbol_kind::S_CODE_BLOCK_START: // "code block"
+      case symbol_kind::S_CODE_BLOCK_CONTENTS: // "%}"
+      case symbol_kind::S_UNKNOWN_DIRECTIVE: // UNKNOWN_DIRECTIVE
+        value.template destroy< std::string > ();
+        break;
+
+      default:
+        break;
+    }
+
+        Base::clear ();
+      }
+
+      /// The user-facing name of this symbol.
+      std::string name () const YY_NOEXCEPT
+      {
+        return parser::symbol_name (this->kind ());
+      }
+
+      /// Backward compatibility (Bison 3.6).
+      symbol_kind_type type_get () const YY_NOEXCEPT;
+
+      /// Whether empty.
+      bool empty () const YY_NOEXCEPT;
+
+      /// Destructive move, \a s is emptied into this.
+      void move (basic_symbol& s);
+
+      /// The semantic value.
+      semantic_type value;
+
+      /// The location.
+      location_type location;
+
+    private:
+#if YY_CPLUSPLUS < 201103L
+      /// Assignment operator.
+      basic_symbol& operator= (const basic_symbol& that);
+#endif
+    };
+
+    /// Type access provider for token (enum) based symbols.
+    struct by_kind
+    {
+      /// Default constructor.
+      by_kind ();
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Move constructor.
+      by_kind (by_kind&& that);
+#endif
+
+      /// Copy constructor.
+      by_kind (const by_kind& that);
+
+      /// The symbol kind as needed by the constructor.
+      typedef token_kind_type kind_type;
+
+      /// Constructor from (external) token numbers.
+      by_kind (kind_type t);
+
+      /// Record that this symbol is empty.
+      void clear ();
+
+      /// Steal the symbol kind from \a that.
+      void move (by_kind& that);
+
+      /// The (internal) type number (corresponding to \a type).
+      /// \a empty when empty.
+      symbol_kind_type kind () const YY_NOEXCEPT;
+
+      /// Backward compatibility (Bison 3.6).
+      symbol_kind_type type_get () const YY_NOEXCEPT;
+
+      /// The symbol kind.
+      /// \a S_YYEMPTY when empty.
+      symbol_kind_type kind_;
+    };
+
+    /// Backward compatibility for a private implementation detail (Bison 3.6).
+    typedef by_kind by_type;
+
+    /// "External" symbols: returned by the scanner.
+    struct symbol_type : basic_symbol<by_kind>
+    {
+      /// Superclass.
+      typedef basic_symbol<by_kind> super_type;
+
+      /// Empty symbol.
+      symbol_type () {}
+
+      /// Constructor for valueless symbols, and symbols from each type.
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, location_type l)
+        : super_type(token_type (tok), std::move (l))
+      {
+        YY_ASSERT (tok == token::TOK_END || tok == token::TOK_YYerror || tok == token::TOK_YYUNDEF || tok == token::TOK_NEWLINE || tok == token::TOK_COMMA || tok == token::TOK_COLON || tok == token::TOK_LPAREN || tok == token::TOK_RPAREN || tok == token::TOK_LBRACKET || tok == token::TOK_RBRACKET || tok == token::TOK_PLUS || tok == token::TOK_MINUS || tok == token::TOK_MULTIPLY || tok == token::TOK_DIVIDE || tok == token::TOK_OR || tok == token::TOK_AND || tok == token::TOK_XOR || tok == token::TOK_POST_DECREMENT || tok == token::TOK_NOT_EQUAL || tok == token::TOK_NOT || tok == token::TOK_REVERSE || tok == token::TOK_EQUAL || tok == token::TOK_PROGRAM || tok == token::TOK_WRAP_TARGET || tok == token::TOK_WRAP || tok == token::TOK_DEFINE || tok == token::TOK_SIDE_SET || tok == token::TOK_WORD || tok == token::TOK_ORIGIN || tok == token::TOK_LANG_OPT || tok == token::TOK_JMP || tok == token::TOK_WAIT || tok == token::TOK_IN || tok == token::TOK_OUT || tok == token::TOK_PUSH || tok == token::TOK_PULL || tok == token::TOK_MOV || tok == token::TOK_IRQ || tok == token::TOK_SET || tok == token::TOK_NOP || tok == token::TOK_PIN || tok == token::TOK_GPIO || tok == token::TOK_OSRE || tok == token::TOK_PINS || tok == token::TOK_NULL || tok == token::TOK_PINDIRS || tok == token::TOK_BLOCK || tok == token::TOK_NOBLOCK || tok == token::TOK_IFEMPTY || tok == token::TOK_IFFULL || tok == token::TOK_NOWAIT || tok == token::TOK_CLEAR || tok == token::TOK_REL || tok == token::TOK_X || tok == token::TOK_Y || tok == token::TOK_EXEC || tok == token::TOK_PC || tok == token::TOK_ISR || tok == token::TOK_OSR || tok == token::TOK_OPTIONAL || tok == token::TOK_SIDE || tok == token::TOK_STATUS || tok == token::TOK_PUBLIC);
+      }
+#else
+      symbol_type (int tok, const location_type& l)
+        : super_type(token_type (tok), l)
+      {
+        YY_ASSERT (tok == token::TOK_END || tok == token::TOK_YYerror || tok == token::TOK_YYUNDEF || tok == token::TOK_NEWLINE || tok == token::TOK_COMMA || tok == token::TOK_COLON || tok == token::TOK_LPAREN || tok == token::TOK_RPAREN || tok == token::TOK_LBRACKET || tok == token::TOK_RBRACKET || tok == token::TOK_PLUS || tok == token::TOK_MINUS || tok == token::TOK_MULTIPLY || tok == token::TOK_DIVIDE || tok == token::TOK_OR || tok == token::TOK_AND || tok == token::TOK_XOR || tok == token::TOK_POST_DECREMENT || tok == token::TOK_NOT_EQUAL || tok == token::TOK_NOT || tok == token::TOK_REVERSE || tok == token::TOK_EQUAL || tok == token::TOK_PROGRAM || tok == token::TOK_WRAP_TARGET || tok == token::TOK_WRAP || tok == token::TOK_DEFINE || tok == token::TOK_SIDE_SET || tok == token::TOK_WORD || tok == token::TOK_ORIGIN || tok == token::TOK_LANG_OPT || tok == token::TOK_JMP || tok == token::TOK_WAIT || tok == token::TOK_IN || tok == token::TOK_OUT || tok == token::TOK_PUSH || tok == token::TOK_PULL || tok == token::TOK_MOV || tok == token::TOK_IRQ || tok == token::TOK_SET || tok == token::TOK_NOP || tok == token::TOK_PIN || tok == token::TOK_GPIO || tok == token::TOK_OSRE || tok == token::TOK_PINS || tok == token::TOK_NULL || tok == token::TOK_PINDIRS || tok == token::TOK_BLOCK || tok == token::TOK_NOBLOCK || tok == token::TOK_IFEMPTY || tok == token::TOK_IFFULL || tok == token::TOK_NOWAIT || tok == token::TOK_CLEAR || tok == token::TOK_REL || tok == token::TOK_X || tok == token::TOK_Y || tok == token::TOK_EXEC || tok == token::TOK_PC || tok == token::TOK_ISR || tok == token::TOK_OSR || tok == token::TOK_OPTIONAL || tok == token::TOK_SIDE || tok == token::TOK_STATUS || tok == token::TOK_PUBLIC);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, int v, location_type l)
+        : super_type(token_type (tok), std::move (v), std::move (l))
+      {
+        YY_ASSERT (tok == token::TOK_INT);
+      }
+#else
+      symbol_type (int tok, const int& v, const location_type& l)
+        : super_type(token_type (tok), v, l)
+      {
+        YY_ASSERT (tok == token::TOK_INT);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, std::string v, location_type l)
+        : super_type(token_type (tok), std::move (v), std::move (l))
+      {
+        YY_ASSERT (tok == token::TOK_ID || tok == token::TOK_STRING || tok == token::TOK_NON_WS || tok == token::TOK_CODE_BLOCK_START || tok == token::TOK_CODE_BLOCK_CONTENTS || tok == token::TOK_UNKNOWN_DIRECTIVE);
+      }
+#else
+      symbol_type (int tok, const std::string& v, const location_type& l)
+        : super_type(token_type (tok), v, l)
+      {
+        YY_ASSERT (tok == token::TOK_ID || tok == token::TOK_STRING || tok == token::TOK_NON_WS || tok == token::TOK_CODE_BLOCK_START || tok == token::TOK_CODE_BLOCK_CONTENTS || tok == token::TOK_UNKNOWN_DIRECTIVE);
+      }
+#endif
+    };
+
+    /// Build a parser object.
+    parser (pio_assembler& pioasm_yyarg);
+    virtual ~parser ();
+
+#if 201103L <= YY_CPLUSPLUS
+    /// Non copyable.
+    parser (const parser&) = delete;
+    /// Non copyable.
+    parser& operator= (const parser&) = delete;
+#endif
+
+    /// Parse.  An alias for parse ().
+    /// \returns  0 iff parsing succeeded.
+    int operator() ();
+
+    /// Parse.
+    /// \returns  0 iff parsing succeeded.
+    virtual int parse ();
+
+#if YYDEBUG
+    /// The current debugging stream.
+    std::ostream& debug_stream () const YY_ATTRIBUTE_PURE;
+    /// Set the current debugging stream.
+    void set_debug_stream (std::ostream &);
+
+    /// Type for debugging levels.
+    typedef int debug_level_type;
+    /// The current debugging level.
+    debug_level_type debug_level () const YY_ATTRIBUTE_PURE;
+    /// Set the current debugging level.
+    void set_debug_level (debug_level_type l);
+#endif
+
+    /// Report a syntax error.
+    /// \param loc    where the syntax error is found.
+    /// \param msg    a description of the syntax error.
+    virtual void error (const location_type& loc, const std::string& msg);
+
+    /// Report a syntax error.
+    void error (const syntax_error& err);
+
+    /// The user-facing name of the symbol whose (internal) number is
+    /// YYSYMBOL.  No bounds checking.
+    static std::string symbol_name (symbol_kind_type yysymbol);
+
+    // Implementation of make_symbol for each symbol type.
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_END (location_type l)
+      {
+        return symbol_type (token::TOK_END, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_END (const location_type& l)
+      {
+        return symbol_type (token::TOK_END, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_YYerror (location_type l)
+      {
+        return symbol_type (token::TOK_YYerror, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_YYerror (const location_type& l)
+      {
+        return symbol_type (token::TOK_YYerror, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_YYUNDEF (location_type l)
+      {
+        return symbol_type (token::TOK_YYUNDEF, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_YYUNDEF (const location_type& l)
+      {
+        return symbol_type (token::TOK_YYUNDEF, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NEWLINE (location_type l)
+      {
+        return symbol_type (token::TOK_NEWLINE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NEWLINE (const location_type& l)
+      {
+        return symbol_type (token::TOK_NEWLINE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_COMMA (location_type l)
+      {
+        return symbol_type (token::TOK_COMMA, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_COMMA (const location_type& l)
+      {
+        return symbol_type (token::TOK_COMMA, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_COLON (location_type l)
+      {
+        return symbol_type (token::TOK_COLON, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_COLON (const location_type& l)
+      {
+        return symbol_type (token::TOK_COLON, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LPAREN (location_type l)
+      {
+        return symbol_type (token::TOK_LPAREN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LPAREN (const location_type& l)
+      {
+        return symbol_type (token::TOK_LPAREN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_RPAREN (location_type l)
+      {
+        return symbol_type (token::TOK_RPAREN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_RPAREN (const location_type& l)
+      {
+        return symbol_type (token::TOK_RPAREN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LBRACKET (location_type l)
+      {
+        return symbol_type (token::TOK_LBRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LBRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOK_LBRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_RBRACKET (location_type l)
+      {
+        return symbol_type (token::TOK_RBRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_RBRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOK_RBRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PLUS (location_type l)
+      {
+        return symbol_type (token::TOK_PLUS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PLUS (const location_type& l)
+      {
+        return symbol_type (token::TOK_PLUS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MINUS (location_type l)
+      {
+        return symbol_type (token::TOK_MINUS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MINUS (const location_type& l)
+      {
+        return symbol_type (token::TOK_MINUS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MULTIPLY (location_type l)
+      {
+        return symbol_type (token::TOK_MULTIPLY, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MULTIPLY (const location_type& l)
+      {
+        return symbol_type (token::TOK_MULTIPLY, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_DIVIDE (location_type l)
+      {
+        return symbol_type (token::TOK_DIVIDE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_DIVIDE (const location_type& l)
+      {
+        return symbol_type (token::TOK_DIVIDE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OR (location_type l)
+      {
+        return symbol_type (token::TOK_OR, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OR (const location_type& l)
+      {
+        return symbol_type (token::TOK_OR, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_AND (location_type l)
+      {
+        return symbol_type (token::TOK_AND, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_AND (const location_type& l)
+      {
+        return symbol_type (token::TOK_AND, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_XOR (location_type l)
+      {
+        return symbol_type (token::TOK_XOR, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_XOR (const location_type& l)
+      {
+        return symbol_type (token::TOK_XOR, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_POST_DECREMENT (location_type l)
+      {
+        return symbol_type (token::TOK_POST_DECREMENT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_POST_DECREMENT (const location_type& l)
+      {
+        return symbol_type (token::TOK_POST_DECREMENT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NOT_EQUAL (location_type l)
+      {
+        return symbol_type (token::TOK_NOT_EQUAL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NOT_EQUAL (const location_type& l)
+      {
+        return symbol_type (token::TOK_NOT_EQUAL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NOT (location_type l)
+      {
+        return symbol_type (token::TOK_NOT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NOT (const location_type& l)
+      {
+        return symbol_type (token::TOK_NOT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_REVERSE (location_type l)
+      {
+        return symbol_type (token::TOK_REVERSE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_REVERSE (const location_type& l)
+      {
+        return symbol_type (token::TOK_REVERSE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_EQUAL (location_type l)
+      {
+        return symbol_type (token::TOK_EQUAL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_EQUAL (const location_type& l)
+      {
+        return symbol_type (token::TOK_EQUAL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PROGRAM (location_type l)
+      {
+        return symbol_type (token::TOK_PROGRAM, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PROGRAM (const location_type& l)
+      {
+        return symbol_type (token::TOK_PROGRAM, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_WRAP_TARGET (location_type l)
+      {
+        return symbol_type (token::TOK_WRAP_TARGET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_WRAP_TARGET (const location_type& l)
+      {
+        return symbol_type (token::TOK_WRAP_TARGET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_WRAP (location_type l)
+      {
+        return symbol_type (token::TOK_WRAP, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_WRAP (const location_type& l)
+      {
+        return symbol_type (token::TOK_WRAP, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_DEFINE (location_type l)
+      {
+        return symbol_type (token::TOK_DEFINE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_DEFINE (const location_type& l)
+      {
+        return symbol_type (token::TOK_DEFINE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SIDE_SET (location_type l)
+      {
+        return symbol_type (token::TOK_SIDE_SET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SIDE_SET (const location_type& l)
+      {
+        return symbol_type (token::TOK_SIDE_SET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_WORD (location_type l)
+      {
+        return symbol_type (token::TOK_WORD, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_WORD (const location_type& l)
+      {
+        return symbol_type (token::TOK_WORD, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_ORIGIN (location_type l)
+      {
+        return symbol_type (token::TOK_ORIGIN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_ORIGIN (const location_type& l)
+      {
+        return symbol_type (token::TOK_ORIGIN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LANG_OPT (location_type l)
+      {
+        return symbol_type (token::TOK_LANG_OPT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LANG_OPT (const location_type& l)
+      {
+        return symbol_type (token::TOK_LANG_OPT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_JMP (location_type l)
+      {
+        return symbol_type (token::TOK_JMP, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_JMP (const location_type& l)
+      {
+        return symbol_type (token::TOK_JMP, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_WAIT (location_type l)
+      {
+        return symbol_type (token::TOK_WAIT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_WAIT (const location_type& l)
+      {
+        return symbol_type (token::TOK_WAIT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_IN (location_type l)
+      {
+        return symbol_type (token::TOK_IN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_IN (const location_type& l)
+      {
+        return symbol_type (token::TOK_IN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OUT (location_type l)
+      {
+        return symbol_type (token::TOK_OUT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OUT (const location_type& l)
+      {
+        return symbol_type (token::TOK_OUT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PUSH (location_type l)
+      {
+        return symbol_type (token::TOK_PUSH, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PUSH (const location_type& l)
+      {
+        return symbol_type (token::TOK_PUSH, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PULL (location_type l)
+      {
+        return symbol_type (token::TOK_PULL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PULL (const location_type& l)
+      {
+        return symbol_type (token::TOK_PULL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MOV (location_type l)
+      {
+        return symbol_type (token::TOK_MOV, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MOV (const location_type& l)
+      {
+        return symbol_type (token::TOK_MOV, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_IRQ (location_type l)
+      {
+        return symbol_type (token::TOK_IRQ, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_IRQ (const location_type& l)
+      {
+        return symbol_type (token::TOK_IRQ, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SET (location_type l)
+      {
+        return symbol_type (token::TOK_SET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SET (const location_type& l)
+      {
+        return symbol_type (token::TOK_SET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NOP (location_type l)
+      {
+        return symbol_type (token::TOK_NOP, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NOP (const location_type& l)
+      {
+        return symbol_type (token::TOK_NOP, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PIN (location_type l)
+      {
+        return symbol_type (token::TOK_PIN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PIN (const location_type& l)
+      {
+        return symbol_type (token::TOK_PIN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_GPIO (location_type l)
+      {
+        return symbol_type (token::TOK_GPIO, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_GPIO (const location_type& l)
+      {
+        return symbol_type (token::TOK_GPIO, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OSRE (location_type l)
+      {
+        return symbol_type (token::TOK_OSRE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OSRE (const location_type& l)
+      {
+        return symbol_type (token::TOK_OSRE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PINS (location_type l)
+      {
+        return symbol_type (token::TOK_PINS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PINS (const location_type& l)
+      {
+        return symbol_type (token::TOK_PINS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NULL (location_type l)
+      {
+        return symbol_type (token::TOK_NULL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NULL (const location_type& l)
+      {
+        return symbol_type (token::TOK_NULL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PINDIRS (location_type l)
+      {
+        return symbol_type (token::TOK_PINDIRS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PINDIRS (const location_type& l)
+      {
+        return symbol_type (token::TOK_PINDIRS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_BLOCK (location_type l)
+      {
+        return symbol_type (token::TOK_BLOCK, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_BLOCK (const location_type& l)
+      {
+        return symbol_type (token::TOK_BLOCK, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NOBLOCK (location_type l)
+      {
+        return symbol_type (token::TOK_NOBLOCK, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NOBLOCK (const location_type& l)
+      {
+        return symbol_type (token::TOK_NOBLOCK, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_IFEMPTY (location_type l)
+      {
+        return symbol_type (token::TOK_IFEMPTY, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_IFEMPTY (const location_type& l)
+      {
+        return symbol_type (token::TOK_IFEMPTY, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_IFFULL (location_type l)
+      {
+        return symbol_type (token::TOK_IFFULL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_IFFULL (const location_type& l)
+      {
+        return symbol_type (token::TOK_IFFULL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NOWAIT (location_type l)
+      {
+        return symbol_type (token::TOK_NOWAIT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NOWAIT (const location_type& l)
+      {
+        return symbol_type (token::TOK_NOWAIT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_CLEAR (location_type l)
+      {
+        return symbol_type (token::TOK_CLEAR, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_CLEAR (const location_type& l)
+      {
+        return symbol_type (token::TOK_CLEAR, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_REL (location_type l)
+      {
+        return symbol_type (token::TOK_REL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_REL (const location_type& l)
+      {
+        return symbol_type (token::TOK_REL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_X (location_type l)
+      {
+        return symbol_type (token::TOK_X, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_X (const location_type& l)
+      {
+        return symbol_type (token::TOK_X, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_Y (location_type l)
+      {
+        return symbol_type (token::TOK_Y, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_Y (const location_type& l)
+      {
+        return symbol_type (token::TOK_Y, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_EXEC (location_type l)
+      {
+        return symbol_type (token::TOK_EXEC, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_EXEC (const location_type& l)
+      {
+        return symbol_type (token::TOK_EXEC, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PC (location_type l)
+      {
+        return symbol_type (token::TOK_PC, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PC (const location_type& l)
+      {
+        return symbol_type (token::TOK_PC, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_ISR (location_type l)
+      {
+        return symbol_type (token::TOK_ISR, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_ISR (const location_type& l)
+      {
+        return symbol_type (token::TOK_ISR, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OSR (location_type l)
+      {
+        return symbol_type (token::TOK_OSR, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OSR (const location_type& l)
+      {
+        return symbol_type (token::TOK_OSR, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OPTIONAL (location_type l)
+      {
+        return symbol_type (token::TOK_OPTIONAL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OPTIONAL (const location_type& l)
+      {
+        return symbol_type (token::TOK_OPTIONAL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SIDE (location_type l)
+      {
+        return symbol_type (token::TOK_SIDE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SIDE (const location_type& l)
+      {
+        return symbol_type (token::TOK_SIDE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_STATUS (location_type l)
+      {
+        return symbol_type (token::TOK_STATUS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_STATUS (const location_type& l)
+      {
+        return symbol_type (token::TOK_STATUS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PUBLIC (location_type l)
+      {
+        return symbol_type (token::TOK_PUBLIC, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PUBLIC (const location_type& l)
+      {
+        return symbol_type (token::TOK_PUBLIC, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_ID (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_ID, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_ID (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_ID, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_STRING (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_STRING, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_STRING (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_STRING, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NON_WS (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_NON_WS, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NON_WS (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_NON_WS, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_CODE_BLOCK_START (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_CODE_BLOCK_START, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_CODE_BLOCK_START (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_CODE_BLOCK_START, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_CODE_BLOCK_CONTENTS (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_CODE_BLOCK_CONTENTS, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_CODE_BLOCK_CONTENTS (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_CODE_BLOCK_CONTENTS, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_UNKNOWN_DIRECTIVE (std::string v, location_type l)
+      {
+        return symbol_type (token::TOK_UNKNOWN_DIRECTIVE, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_UNKNOWN_DIRECTIVE (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_UNKNOWN_DIRECTIVE, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_INT (int v, location_type l)
+      {
+        return symbol_type (token::TOK_INT, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_INT (const int& v, const location_type& l)
+      {
+        return symbol_type (token::TOK_INT, v, l);
+      }
+#endif
+
+
+    class context
+    {
+    public:
+      context (const parser& yyparser, const symbol_type& yyla);
+      const symbol_type& lookahead () const { return yyla_; }
+      symbol_kind_type token () const { return yyla_.kind (); }
+      const location_type& location () const { return yyla_.location; }
+
+      /// Put in YYARG at most YYARGN of the expected tokens, and return the
+      /// number of tokens stored in YYARG.  If YYARG is null, return the
+      /// number of expected tokens (guaranteed to be less than YYNTOKENS).
+      int expected_tokens (symbol_kind_type yyarg[], int yyargn) const;
+
+    private:
+      const parser& yyparser_;
+      const symbol_type& yyla_;
+    };
+
+  private:
+#if YY_CPLUSPLUS < 201103L
+    /// Non copyable.
+    parser (const parser&);
+    /// Non copyable.
+    parser& operator= (const parser&);
+#endif
+
+    /// Check the lookahead yytoken.
+    /// \returns  true iff the token will be eventually shifted.
+    bool yy_lac_check_ (symbol_kind_type yytoken) const;
+    /// Establish the initial context if no initial context currently exists.
+    /// \returns  true iff the token will be eventually shifted.
+    bool yy_lac_establish_ (symbol_kind_type yytoken);
+    /// Discard any previous initial lookahead context because of event.
+    /// \param event  the event which caused the lookahead to be discarded.
+    ///               Only used for debbuging output.
+    void yy_lac_discard_ (const char* event);
+
+    /// Stored state numbers (used for stacks).
+    typedef unsigned char state_type;
+
+    /// The arguments of the error message.
+    int yy_syntax_error_arguments_ (const context& yyctx,
+                                    symbol_kind_type yyarg[], int yyargn) const;
+
+    /// Generate an error message.
+    /// \param yyctx     the context in which the error occurred.
+    virtual std::string yysyntax_error_ (const context& yyctx) const;
+    /// Compute post-reduction state.
+    /// \param yystate   the current state
+    /// \param yysym     the nonterminal to push on the stack
+    static state_type yy_lr_goto_state_ (state_type yystate, int yysym);
+
+    /// Whether the given \c yypact_ value indicates a defaulted state.
+    /// \param yyvalue   the value to check
+    static bool yy_pact_value_is_default_ (int yyvalue);
+
+    /// Whether the given \c yytable_ value indicates a syntax error.
+    /// \param yyvalue   the value to check
+    static bool yy_table_value_is_error_ (int yyvalue);
+
+    static const signed char yypact_ninf_;
+    static const signed char yytable_ninf_;
+
+    /// Convert a scanner token kind \a t to a symbol kind.
+    /// In theory \a t should be a token_kind_type, but character literals
+    /// are valid, yet not members of the token_type enum.
+    static symbol_kind_type yytranslate_ (int t);
+
+    /// Convert the symbol name \a n to a form suitable for a diagnostic.
+    static std::string yytnamerr_ (const char *yystr);
+
+    /// For a symbol, its name in clear.
+    static const char* const yytname_[];
+
+
+    // Tables.
+    // YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+    // STATE-NUM.
+    static const short yypact_[];
+
+    // YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
+    // Performed when YYTABLE does not specify something else to do.  Zero
+    // means the default is an error.
+    static const signed char yydefact_[];
+
+    // YYPGOTO[NTERM-NUM].
+    static const short yypgoto_[];
+
+    // YYDEFGOTO[NTERM-NUM].
+    static const short yydefgoto_[];
+
+    // YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
+    // positive, shift that token.  If negative, reduce the rule whose
+    // number is the opposite.  If YYTABLE_NINF, syntax error.
+    static const short yytable_[];
+
+    static const unsigned char yycheck_[];
+
+    // YYSTOS[STATE-NUM] -- The (internal number of the) accessing
+    // symbol of state STATE-NUM.
+    static const signed char yystos_[];
+
+    // YYR1[YYN] -- Symbol number of symbol that rule YYN derives.
+    static const signed char yyr1_[];
+
+    // YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.
+    static const signed char yyr2_[];
+
+
+#if YYDEBUG
+    // YYRLINE[YYN] -- Source line where rule number YYN was defined.
+    static const short yyrline_[];
+    /// Report on the debug stream that the rule \a r is going to be reduced.
+    virtual void yy_reduce_print_ (int r) const;
+    /// Print the state stack on the debug stream.
+    virtual void yy_stack_print_ () const;
+
+    /// Debugging level.
+    int yydebug_;
+    /// Debug stream.
+    std::ostream* yycdebug_;
+
+    /// \brief Display a symbol kind, value and location.
+    /// \param yyo    The output stream.
+    /// \param yysym  The symbol.
+    template <typename Base>
+    void yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const;
+#endif
+
+    /// \brief Reclaim the memory associated to a symbol.
+    /// \param yymsg     Why this token is reclaimed.
+    ///                  If null, print nothing.
+    /// \param yysym     The symbol.
+    template <typename Base>
+    void yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const;
+
+  private:
+    /// Type access provider for state based symbols.
+    struct by_state
+    {
+      /// Default constructor.
+      by_state () YY_NOEXCEPT;
+
+      /// The symbol kind as needed by the constructor.
+      typedef state_type kind_type;
+
+      /// Constructor.
+      by_state (kind_type s) YY_NOEXCEPT;
+
+      /// Copy constructor.
+      by_state (const by_state& that) YY_NOEXCEPT;
+
+      /// Record that this symbol is empty.
+      void clear () YY_NOEXCEPT;
+
+      /// Steal the symbol kind from \a that.
+      void move (by_state& that);
+
+      /// The symbol kind (corresponding to \a state).
+      /// \a symbol_kind::S_YYEMPTY when empty.
+      symbol_kind_type kind () const YY_NOEXCEPT;
+
+      /// The state number used to denote an empty symbol.
+      /// We use the initial state, as it does not have a value.
+      enum { empty_state = 0 };
+
+      /// The state.
+      /// \a empty when empty.
+      state_type state;
+    };
+
+    /// "Internal" symbol: element of the stack.
+    struct stack_symbol_type : basic_symbol<by_state>
+    {
+      /// Superclass.
+      typedef basic_symbol<by_state> super_type;
+      /// Construct an empty symbol.
+      stack_symbol_type ();
+      /// Move or copy construction.
+      stack_symbol_type (YY_RVREF (stack_symbol_type) that);
+      /// Steal the contents from \a sym to build this.
+      stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) sym);
+#if YY_CPLUSPLUS < 201103L
+      /// Assignment, needed by push_back by some old implementations.
+      /// Moves the contents of that.
+      stack_symbol_type& operator= (stack_symbol_type& that);
+
+      /// Assignment, needed by push_back by other implementations.
+      /// Needed by some other old implementations.
+      stack_symbol_type& operator= (const stack_symbol_type& that);
+#endif
+    };
+
+    /// A stack with random access from its top.
+    template <typename T, typename S = std::vector<T> >
+    class stack
+    {
+    public:
+      // Hide our reversed order.
+      typedef typename S::iterator iterator;
+      typedef typename S::const_iterator const_iterator;
+      typedef typename S::size_type size_type;
+      typedef typename std::ptrdiff_t index_type;
+
+      stack (size_type n = 200)
+        : seq_ (n)
+      {}
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Non copyable.
+      stack (const stack&) = delete;
+      /// Non copyable.
+      stack& operator= (const stack&) = delete;
+#endif
+
+      /// Random access.
+      ///
+      /// Index 0 returns the topmost element.
+      const T&
+      operator[] (index_type i) const
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
+
+      /// Random access.
+      ///
+      /// Index 0 returns the topmost element.
+      T&
+      operator[] (index_type i)
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
+
+      /// Steal the contents of \a t.
+      ///
+      /// Close to move-semantics.
+      void
+      push (YY_MOVE_REF (T) t)
+      {
+        seq_.push_back (T ());
+        operator[] (0).move (t);
+      }
+
+      /// Pop elements from the stack.
+      void
+      pop (std::ptrdiff_t n = 1) YY_NOEXCEPT
+      {
+        for (; 0 < n; --n)
+          seq_.pop_back ();
+      }
+
+      /// Pop all elements from the stack.
+      void
+      clear () YY_NOEXCEPT
+      {
+        seq_.clear ();
+      }
+
+      /// Number of elements on the stack.
+      index_type
+      size () const YY_NOEXCEPT
+      {
+        return index_type (seq_.size ());
+      }
+
+      /// Iterator on top of the stack (going downwards).
+      const_iterator
+      begin () const YY_NOEXCEPT
+      {
+        return seq_.begin ();
+      }
+
+      /// Bottom of the stack.
+      const_iterator
+      end () const YY_NOEXCEPT
+      {
+        return seq_.end ();
+      }
+
+      /// Present a slice of the top of a stack.
+      class slice
+      {
+      public:
+        slice (const stack& stack, index_type range)
+          : stack_ (stack)
+          , range_ (range)
+        {}
+
+        const T&
+        operator[] (index_type i) const
+        {
+          return stack_[range_ - i];
+        }
+
+      private:
+        const stack& stack_;
+        index_type range_;
+      };
+
+    private:
+#if YY_CPLUSPLUS < 201103L
+      /// Non copyable.
+      stack (const stack&);
+      /// Non copyable.
+      stack& operator= (const stack&);
+#endif
+      /// The wrapped container.
+      S seq_;
+    };
+
+
+    /// Stack type.
+    typedef stack<stack_symbol_type> stack_type;
+
+    /// The stack.
+    stack_type yystack_;
+    /// The stack for LAC.
+    /// Logically, the yy_lac_stack's lifetime is confined to the function
+    /// yy_lac_check_. We just store it as a member of this class to hold
+    /// on to the memory and to avoid frequent reallocations.
+    /// Since yy_lac_check_ is const, this member must be mutable.
+    mutable std::vector<state_type> yylac_stack_;
+    /// Whether an initial LAC context was established.
+    bool yy_lac_established_;
+
+
+    /// Push a new state on the stack.
+    /// \param m    a debug message to display
+    ///             if null, no trace is output.
+    /// \param sym  the symbol
+    /// \warning the contents of \a s.value is stolen.
+    void yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym);
+
+    /// Push a new look ahead token on the state on the stack.
+    /// \param m    a debug message to display
+    ///             if null, no trace is output.
+    /// \param s    the state
+    /// \param sym  the symbol (for its value and location).
+    /// \warning the contents of \a sym.value is stolen.
+    void yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym);
+
+    /// Pop \a n symbols from the stack.
+    void yypop_ (int n = 1);
+
+    /// Constants.
+    enum
+    {
+      yylast_ = 205,     ///< Last index in yytable_.
+      yynnts_ = 27,  ///< Number of nonterminal symbols.
+      yyfinal_ = 96 ///< Termination state number.
+    };
+
+
+    // User arguments.
+    pio_assembler& pioasm;
+
+  };
+
+  inline
+  parser::symbol_kind_type
+  parser::yytranslate_ (int t)
+  {
+    // YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to
+    // TOKEN-NUM as returned by yylex.
+    static
+    const signed char
+    translate_table[] =
+    {
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
+      15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
+      25,    26,    27,    28,    29,    30,    31,    32,    33,    34,
+      35,    36,    37,    38,    39,    40,    41,    42,    43,    44,
+      45,    46,    47,    48,    49,    50,    51,    52,    53,    54,
+      55,    56,    57,    58,    59,    60,    61,    62,    63,    64,
+      65,    66,    67,    68,    69
+    };
+    // Last valid token kind.
+    const int code_max = 324;
+
+    if (t <= 0)
+      return symbol_kind::S_YYEOF;
+    else if (t <= code_max)
+      return YY_CAST (symbol_kind_type, translate_table[t]);
+    else
+      return symbol_kind::S_YYUNDEF;
+  }
+
+  // basic_symbol.
+  template <typename Base>
+  parser::basic_symbol<Base>::basic_symbol (const basic_symbol& that)
+    : Base (that)
+    , value ()
+    , location (that.location)
+  {
+    switch (this->kind ())
+    {
+      case symbol_kind::S_if_full: // if_full
+      case symbol_kind::S_if_empty: // if_empty
+      case symbol_kind::S_blocking: // blocking
+        value.copy< bool > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_condition: // condition
+        value.copy< enum condition > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_in_source: // in_source
+      case symbol_kind::S_out_target: // out_target
+      case symbol_kind::S_set_target: // set_target
+        value.copy< enum in_out_set > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_irq_modifiers: // irq_modifiers
+        value.copy< enum irq > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_mov_target: // mov_target
+      case symbol_kind::S_mov_source: // mov_source
+        value.copy< enum mov > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_mov_op: // mov_op
+        value.copy< enum mov_op > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_INT: // "integer"
+        value.copy< int > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_instruction: // instruction
+      case symbol_kind::S_base_instruction: // base_instruction
+        value.copy< std::shared_ptr<instruction> > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_expression: // expression
+      case symbol_kind::S_delay: // delay
+      case symbol_kind::S_sideset: // sideset
+        value.copy< std::shared_ptr<resolvable> > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_label_decl: // label_decl
+      case symbol_kind::S_symbol_def: // symbol_def
+        value.copy< std::shared_ptr<symbol> > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_wait_source: // wait_source
+        value.copy< std::shared_ptr<wait_source> > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_ID: // "identifier"
+      case symbol_kind::S_STRING: // "string"
+      case symbol_kind::S_NON_WS: // "text"
+      case symbol_kind::S_CODE_BLOCK_START: // "code block"
+      case symbol_kind::S_CODE_BLOCK_CONTENTS: // "%}"
+      case symbol_kind::S_UNKNOWN_DIRECTIVE: // UNKNOWN_DIRECTIVE
+        value.copy< std::string > (YY_MOVE (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+  }
+
+
+
+  template <typename Base>
+  parser::symbol_kind_type
+  parser::basic_symbol<Base>::type_get () const YY_NOEXCEPT
+  {
+    return this->kind ();
+  }
+
+  template <typename Base>
+  bool
+  parser::basic_symbol<Base>::empty () const YY_NOEXCEPT
+  {
+    return this->kind () == symbol_kind::S_YYEMPTY;
+  }
+
+  template <typename Base>
+  void
+  parser::basic_symbol<Base>::move (basic_symbol& s)
+  {
+    super_type::move (s);
+    switch (this->kind ())
+    {
+      case symbol_kind::S_if_full: // if_full
+      case symbol_kind::S_if_empty: // if_empty
+      case symbol_kind::S_blocking: // blocking
+        value.move< bool > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_condition: // condition
+        value.move< enum condition > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_in_source: // in_source
+      case symbol_kind::S_out_target: // out_target
+      case symbol_kind::S_set_target: // set_target
+        value.move< enum in_out_set > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_irq_modifiers: // irq_modifiers
+        value.move< enum irq > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_mov_target: // mov_target
+      case symbol_kind::S_mov_source: // mov_source
+        value.move< enum mov > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_mov_op: // mov_op
+        value.move< enum mov_op > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_INT: // "integer"
+        value.move< int > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_instruction: // instruction
+      case symbol_kind::S_base_instruction: // base_instruction
+        value.move< std::shared_ptr<instruction> > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_expression: // expression
+      case symbol_kind::S_delay: // delay
+      case symbol_kind::S_sideset: // sideset
+        value.move< std::shared_ptr<resolvable> > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_label_decl: // label_decl
+      case symbol_kind::S_symbol_def: // symbol_def
+        value.move< std::shared_ptr<symbol> > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_wait_source: // wait_source
+        value.move< std::shared_ptr<wait_source> > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_ID: // "identifier"
+      case symbol_kind::S_STRING: // "string"
+      case symbol_kind::S_NON_WS: // "text"
+      case symbol_kind::S_CODE_BLOCK_START: // "code block"
+      case symbol_kind::S_CODE_BLOCK_CONTENTS: // "%}"
+      case symbol_kind::S_UNKNOWN_DIRECTIVE: // UNKNOWN_DIRECTIVE
+        value.move< std::string > (YY_MOVE (s.value));
+        break;
+
+      default:
+        break;
+    }
+
+    location = YY_MOVE (s.location);
+  }
+
+  // by_kind.
+  inline
+  parser::by_kind::by_kind ()
+    : kind_ (symbol_kind::S_YYEMPTY)
+  {}
+
+#if 201103L <= YY_CPLUSPLUS
+  inline
+  parser::by_kind::by_kind (by_kind&& that)
+    : kind_ (that.kind_)
+  {
+    that.clear ();
+  }
+#endif
+
+  inline
+  parser::by_kind::by_kind (const by_kind& that)
+    : kind_ (that.kind_)
+  {}
+
+  inline
+  parser::by_kind::by_kind (token_kind_type t)
+    : kind_ (yytranslate_ (t))
+  {}
+
+  inline
+  void
+  parser::by_kind::clear ()
+  {
+    kind_ = symbol_kind::S_YYEMPTY;
+  }
+
+  inline
+  void
+  parser::by_kind::move (by_kind& that)
+  {
+    kind_ = that.kind_;
+    that.clear ();
+  }
+
+  inline
+  parser::symbol_kind_type
+  parser::by_kind::kind () const YY_NOEXCEPT
+  {
+    return kind_;
+  }
+
+  inline
+  parser::symbol_kind_type
+  parser::by_kind::type_get () const YY_NOEXCEPT
+  {
+    return this->kind ();
+  }
+
+} // yy
+
+
+
+
+#endif // !YY_YY_HOME_GRAHAM_DEV_MU_PICO_SDK_TOOLS_PIOASM_GEN_PARSER_HPP_INCLUDED