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#!/usr/bin/tclsh
#
# This script appends additional token codes to the end of the
# parse.h file that lemon generates. These extra token codes are
# not used by the parser. But they are used by the tokenizer and/or
# the code generator.
#
#
set in [open [lindex $argv 0] rb]
set max 0
while {![eof $in]} {
set line [gets $in]
if {[regexp {^#define TK_} $line]} {
puts $line
set x [lindex $line 2]
if {$x>$max} {set max $x}
}
}
close $in
# The following are the extra token codes to be added. SPACE and
# ILLEGAL *must* be the last two token codes and they must be in that order.
#
set extras {
ISNOT
FUNCTION
COLUMN
AGG_FUNCTION
AGG_COLUMN
UMINUS
UPLUS
REGISTER
VECTOR
SELECT_COLUMN
IF_NULL_ROW
ASTERISK
SPAN
END_OF_FILE
UNCLOSED_STRING
SPACE
ILLEGAL
}
if {[lrange $extras end-1 end]!="SPACE ILLEGAL"} {
error "SPACE and ILLEGAL must be the last two token codes and they\
must be in that order"
}
foreach x $extras {
incr max
puts [format "#define TK_%-29s %4d" $x $max]
}
# Some additional #defines related to token codes.
#
puts "\n/* The token codes above must all fit in 8 bits */"
puts [format "#define %-20s %-6s" TKFLG_MASK 0xff]
puts "\n/* Flags that can be added to a token code when it is not"
puts "** being stored in a u8: */"
foreach {fg val comment} {
TKFLG_DONTFOLD 0x100 {/* Omit constant folding optimizations */}
} {
puts [format "#define %-20s %-6s %s" $fg $val $comment]
}
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