third_party/sqlite/src/mkopcodec.awk

   1 #!/usr/bin/awk -f
   2 #
   3 # This AWK script scans the opcodes.h file (which is itself generated by
   4 # another awk script) and uses the information gleaned to create the
   5 # opcodes.c source file.
   6 #
   7 # Opcodes.c contains strings which are the symbolic names for the various
   8 # opcodes used by the VDBE.  These strings are used when disassembling a
   9 # VDBE program during tracing or as a result of the EXPLAIN keyword.
  10 #
  11 BEGIN {
  12   print "/* Automatically generated.  Do not edit */"
  13   print "/* See the mkopcodec.awk script for details. */"
  14   printf "#if !defined(SQLITE_OMIT_EXPLAIN)"
  15   printf    " || !defined(NDEBUG)"
  16   printf    " || defined(VDBE_PROFILE)"
  17   print     " || defined(SQLITE_DEBUG)"
  18   print "const char *sqlite3OpcodeName(int i){"
  19   print " static const char *const azName[] = { \"?\","
  20 }
  21 /define OP_/ {
  22   sub("OP_","",$2)
  23   i++
  24   printf "     /* %3d */ \"%s\",\n", $3, $2
  25 }
  26 END {
  27   print "  };"
  28   print "  return azName[i];"
  29   print "}"
  30   print "#endif"
  31 }