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