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ed94af5eb9
lower-bound test on "switch(opcode){...}", making the code smaller and faster.
FossilOrigin-Name: 4c9222f75bfac47f5422fff86b2d69a61933b3a2
51 lines
1.5 KiB
Tcl
51 lines
1.5 KiB
Tcl
#!/usr/bin/tclsh
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#
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# This TCL script scans the opcodes.h file (which is itself generated by
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# another TCL 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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puts "/* Automatically generated. Do not edit */"
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puts "/* See the tool/mkopcodec.tcl script for details. */"
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puts "#if !defined(SQLITE_OMIT_EXPLAIN) \\"
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puts " || defined(VDBE_PROFILE) \\"
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puts " || defined(SQLITE_DEBUG)"
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puts "#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) || defined(SQLITE_DEBUG)"
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puts "# define OpHelp(X) \"\\0\" X"
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puts "#else"
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puts "# define OpHelp(X)"
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puts "#endif"
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puts "const char *sqlite3OpcodeName(int i)\173"
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puts " static const char *const azName\[\] = \173"
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set mx 0
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set in [open [lindex $argv 0] rb]
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while {![eof $in]} {
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set line [gets $in]
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if {[regexp {^#define OP_} $line]} {
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set name [lindex $line 1]
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regsub {^OP_} $name {} name
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set i [lindex $line 2]
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set label($i) $name
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if {$mx<$i} {set mx $i}
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if {[regexp {synopsis: (.*) \*/} $line all x]} {
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set synopsis($i) [string trim $x]
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} else {
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set synopsis($i) {}
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}
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}
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}
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close $in
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for {set i 0} {$i<=$mx} {incr i} {
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puts [format " /* %3d */ %-18s OpHelp(\"%s\")," \
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$i \"$label($i)\" $synopsis($i)]
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}
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puts " \175;"
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puts " return azName\[i\];"
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puts "\175"
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puts "#endif"
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