test/langtrans_d.txl

   1 include "testcase.txl"
   2
   3 define d_statements
   4                 [repeat d_lang_stmt]
   5 end define
   6
   7 define d_lang_stmt
   8                 [al_ragel_stmt]
   9         |       [d_variable_decl]
  10         |       [d_expr_stmt]
  11         |       [d_if_stmt]
  12         |       [EX] '{ [IN] [NL] [d_statements] [EX] '} [IN] [NL]
  13 end define
  14
  15 define d_variable_decl
  16                 [d_type_decl] [id] [opt union] '; [NL]
  17 end define
  18
  19 define d_type_decl
  20                 [al_type_decl]
  21         |       'char '*
  22 end define
  23
  24 define d_expr_stmt
  25                 [d_expr] '; [NL]
  26 end define
  27
  28 define d_expr
  29                 [d_term] [repeat d_expr_extend]
  30 end define
  31
  32 define d_expr_extend
  33                 [al_expr_op] [d_term]
  34 end define
  35
  36 define d_term
  37                 [al_term]
  38         |       [id] '( [d_args] ')
  39 end define
  40
  41 define d_args
  42                 [list d_expr]
  43 end define
  44
  45 define d_sign
  46                 '- | '+
  47 end define
  48
  49 define d_if_stmt
  50                 'if '( [d_expr] ') [NL] [IN]
  51                         [d_lang_stmt] [EX]
  52                 [opt d_else]
  53 end define
  54
  55 define d_else
  56                 'else [NL] [IN]
  57                         [d_lang_stmt] [EX]
  58 end define
  59
  60 define d_lang
  61                 [d_statements]
  62                 '%% [NL]
  63                 [d_statements]
  64                 [ragel_def]
  65 end define
  66
  67 define program
  68                 [lang_indep]
  69         |       [d_lang]
  70 end define
  71
  72 redefine al_host_block
  73                 '{ [NL] [IN] [al_statements] [EX] '} [NL]
  74         |       '{ [NL] [IN] [d_statements] [EX] '} [NL]
  75 end define
  76
  77 rule ptrTypes
  78         replace [d_type_decl]
  79                 'ptr
  80         by
  81                 'char '*
  82 end rule
  83
  84 function alStmtToD1 AlStmt [action_lang_stmt]
  85         deconstruct AlStmt
  86                 VarDecl [al_variable_decl]
  87         deconstruct VarDecl
  88                 Type [al_type_decl] Id [id] OptUnion [opt union] ';
  89         construct DType [d_type_decl]
  90                 Type
  91         construct Result [d_variable_decl]
  92                 DType [ptrTypes] Id OptUnion ';
  93         replace [repeat d_lang_stmt]
  94         by
  95                 Result
  96 end function
  97
  98 function alExprExtendToD AlExprExtend [repeat al_expr_extend]
  99         deconstruct AlExprExtend
 100                 Op [al_expr_op] Term [al_term] Rest [repeat al_expr_extend]
 101         construct DRest [repeat d_expr_extend]
 102                 _ [alExprExtendToD Rest]
 103         replace [repeat d_expr_extend]
 104         by
 105                 Op Term DRest
 106 end function
 107
 108 function alExprToD AlExpr [al_expr]
 109         deconstruct AlExpr
 110                 ALTerm [al_term] AlExprExtend [repeat al_expr_extend]
 111         construct DExprExtend [repeat d_expr_extend]
 112                 _ [alExprExtendToD AlExprExtend]
 113         construct Result [opt d_expr]
 114                 ALTerm DExprExtend
 115         replace [opt d_expr]
 116         by
 117                 Result
 118 end function
 119
 120 function alStmtToD2 AlStmt [action_lang_stmt]
 121         deconstruct AlStmt
 122                 AlExpr [al_expr] ';
 123         construct OptDExpr [opt d_expr]
 124                 _ [alExprToD AlExpr]
 125         deconstruct OptDExpr
 126                 DExpr [d_expr]
 127         replace [repeat d_lang_stmt]
 128         by
 129                 DExpr ';
 130 end function
 131
 132 function alOptElseD AlOptElse [opt al_else]
 133         deconstruct AlOptElse
 134                 'else
 135                         AlSubStmt [action_lang_stmt]
 136         construct AlSubStmts [repeat action_lang_stmt]
 137                 AlSubStmt
 138         construct DSubStmts [repeat d_lang_stmt]
 139                 _ [alToD AlSubStmts]
 140         deconstruct DSubStmts
 141                 DSubStmt [d_lang_stmt]
 142         replace [opt d_else]
 143         by
 144                 'else
 145                         DSubStmt
 146 end function
 147
 148 function alStmtToD3 AlStmt [action_lang_stmt]
 149         deconstruct AlStmt
 150                 'if '( AlExpr [al_expr] ')
 151                         AlSubStmt [action_lang_stmt]
 152                 AlOptElse [opt al_else]
 153         construct OptDExpr [opt d_expr]
 154                 _ [alExprToD AlExpr]
 155         deconstruct OptDExpr
 156                 DExpr [d_expr]
 157         construct AlSubStmts [repeat action_lang_stmt]
 158                 AlSubStmt
 159         construct DSubStmts [repeat d_lang_stmt]
 160                 _ [alToD AlSubStmts]
 161         deconstruct DSubStmts
 162                 DSubStmt [d_lang_stmt]
 163         construct OptDElse [opt d_else]
 164                 _ [alOptElseD AlOptElse]
 165         replace [repeat d_lang_stmt]
 166         by
 167                 'if '( DExpr ')
 168                         DSubStmt
 169                 OptDElse
 170 end function
 171
 172 function alStmtToD4a AlStmt [action_lang_stmt]
 173         deconstruct AlStmt
 174                 'printi Id [id] ';
 175         replace [repeat d_lang_stmt]
 176         by
 177                 'writef '( '"%d" ', Id ');
 178 end function
 179
 180 function alStmtToD4b AlStmt [action_lang_stmt]
 181         deconstruct AlStmt
 182                 'prints String [stringlit] ';
 183         replace [repeat d_lang_stmt]
 184         by
 185                 'writef '( '"%s" ', String ');
 186 end function
 187
 188 function alStmtToD5 AlStmt [action_lang_stmt]
 189         deconstruct AlStmt
 190                 '{ AlSubStmts [repeat action_lang_stmt] '}
 191         construct DSubStmts [repeat d_lang_stmt]
 192                 _ [alToD AlSubStmts]
 193         replace [repeat d_lang_stmt]
 194         by
 195                 '{ DSubStmts '}
 196 end function
 197
 198 function alStmtToD6 AlStmt [action_lang_stmt]
 199         deconstruct AlStmt
 200                 RagelStmt [al_ragel_stmt]
 201         replace [repeat d_lang_stmt]
 202         by
 203                 RagelStmt
 204 end function
 205
 206 function alToD AlStmts [repeat action_lang_stmt]
 207         deconstruct AlStmts
 208                 FirstStmt [action_lang_stmt] Rest [repeat action_lang_stmt]
 209         construct DFirst [repeat d_lang_stmt]
 210                 _
 211                         [alStmtToD1 FirstStmt]
 212                         [alStmtToD2 FirstStmt]
 213                         [alStmtToD3 FirstStmt]
 214                         [alStmtToD4a FirstStmt]
 215                         [alStmtToD4b FirstStmt]
 216                         [alStmtToD5 FirstStmt]
 217                         [alStmtToD6 FirstStmt]
 218         construct DRest [repeat d_lang_stmt]
 219                 _ [alToD Rest]
 220         replace [repeat d_lang_stmt]
 221         by
 222                 DFirst [. DRest]
 223 end function
 224
 225 rule actionTransD
 226         replace [al_host_block]
 227                 '{ AlStmts [repeat action_lang_stmt] '}
 228         construct DStmts [repeat d_lang_stmt]
 229                 _ [alToD AlStmts]
 230         by
 231                 '{ DStmts '}
 232 end rule
 233
 234 function langTransD
 235         replace [program]
 236                 Definitions [repeat action_lang_stmt]
 237                 '%%
 238                 Initializations [repeat action_lang_stmt]
 239                 RagelDef [ragel_def]
 240         construct DDefinitions [repeat d_lang_stmt]
 241                 _ [alToD Definitions]
 242         construct DInitializations [repeat d_lang_stmt]
 243                 _ [alToD Initializations]
 244         by
 245                 DDefinitions
 246                 '%%
 247                 DInitializations
 248                 RagelDef [actionTransD]
 249 end function
 250
 251 function main
 252         replace [program]
 253                 P [program]
 254         by
 255                 P [langTransD]
 256 end function