Import SQLite 3.10.2.

third_party/sqlite/src/mkopcodec.awk

-#!/usr/bin/awk -f
-#
-# This AWK script scans the opcodes.h file (which is itself generated by
-# another awk script) and uses the information gleaned to create the
-# opcodes.c source file.
-#
-# Opcodes.c contains strings which are the symbolic names for the various
-# opcodes used by the VDBE.  These strings are used when disassembling a
-# VDBE program during tracing or as a result of the EXPLAIN keyword.
-#
-BEGIN {
-  print "/* Automatically generated.  Do not edit */"
-  print "/* See the mkopcodec.awk script for details. */"
-  printf "#if !defined(SQLITE_OMIT_EXPLAIN)"
-  printf    " || defined(VDBE_PROFILE)"
-  print     " || defined(SQLITE_DEBUG)"
-  print "#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) || defined(SQLITE_DEBUG)"
-  print "# define OpHelp(X) \"\\0\" X"
-  print "#else"
-  print "# define OpHelp(X)"
-  print "#endif"
-  print "const char *sqlite3OpcodeName(int i){"
-  print " static const char *const azName[] = { \"?\","
-  mx = 0
-}
-/^.define OP_/ {
-  sub("OP_","",$2)
-  i = $3+0
-  label[i] = $2
-  if( mx<i ) mx = i
-  for(j=5; j<NF; j++) if( $j=="synopsis:" ) break
-  if( j<NF ){
-    j++
-    x = $j
-    for(j=j+1; j<NF; j++) x = x " " $j
-    synopsis[i] = x
-  }else{
-    synopsis[i] = ""
-  }
-}
-END {
-  for(i=1; i<=mx; i++){
-    printf "     /* %3d */ %-18s OpHelp(\"%s\"),\n", i, \
-        "\"" label[i] "\"", synopsis[i]
-  }
-  print "  };"
-  print "  return azName[i];"
-  print "}"
-  print "#endif"
-}