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c7379ce442
commentary in the EXPLAIN output. Formerly, this was only available with SQLITE_DEBUG. FossilOrigin-Name: e1a89b56f7173166bb9224e2e360fd67ad3399c3
51 lines
1.4 KiB
Awk
51 lines
1.4 KiB
Awk
#!/usr/bin/awk -f
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#
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# This AWK script scans the opcodes.h file (which is itself generated by
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# another awk script) and uses the information gleaned to create the
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# opcodes.c source file.
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#
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# Opcodes.c contains strings which are the symbolic names for the various
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# opcodes used by the VDBE. These strings are used when disassembling a
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# VDBE program during tracing or as a result of the EXPLAIN keyword.
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#
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BEGIN {
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print "/* Automatically generated. Do not edit */"
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print "/* See the mkopcodec.awk script for details. */"
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printf "#if !defined(SQLITE_OMIT_EXPLAIN)"
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printf " || defined(VDBE_PROFILE)"
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print " || defined(SQLITE_DEBUG)"
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print "#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) || defined(SQLITE_DEBUG)"
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print "# define OpHelp(X) \"\\0\" X"
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print "#else"
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print "# define OpHelp(X)"
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print "#endif"
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print "const char *sqlite3OpcodeName(int i){"
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print " static const char *const azName[] = { \"?\","
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mx = 0
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}
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/^.define OP_/ {
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sub("OP_","",$2)
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i = $3+0
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label[i] = $2
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if( mx<i ) mx = i
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for(j=5; j<NF; j++) if( $j=="synopsis:" ) break
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if( j<NF ){
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j++
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x = $j
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for(j=j+1; j<NF; j++) x = x " " $j
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synopsis[i] = x
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}else{
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synopsis[i] = ""
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}
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}
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END {
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for(i=1; i<=mx; i++){
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printf " /* %3d */ %-18s OpHelp(\"%s\"),\n", i, \
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"\"" label[i] "\"", synopsis[i]
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}
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print " };"
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print " return azName[i];"
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print "}"
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print "#endif"
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}
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