diff options
Diffstat (limited to 'ds9/parsers/fitslex.tcl')
| -rw-r--r-- | ds9/parsers/fitslex.tcl | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/ds9/parsers/fitslex.tcl b/ds9/parsers/fitslex.tcl new file mode 100644 index 0000000..7126931 --- /dev/null +++ b/ds9/parsers/fitslex.tcl @@ -0,0 +1,319 @@ +package provide DS9 1.0 + +###### +# Begin autogenerated fickle (version 2.1) routines. +# Although fickle itself is protected by the GNU Public License (GPL) +# all user-supplied functions are protected by their respective +# author's license. See http://mini.net/tcl/fickle for other details. +###### + +namespace eval fits { + variable yylval + + variable yytext {} + variable yyleng 0 + variable yyin stdin + variable yyout stdout + variable yy_current_buffer {} + + variable yylineno 1 + + variable index_ 0 + variable done_ 0 +} + +# ECHO copies yytext to the scanner's output if no arguments are +# given. The scanner writes its ECHO output to the yyout global +# (default, stdout), which may be redefined by the user simply by +# assigning it to some other channel. +# -- from the flex(1) man page +proc fits::ECHO {{s ""}} { + variable yytext + variable yyout + + if {$s == ""} { + puts -nonewline $yyout $yytext + } else { + puts -nonewline $yyout $s + } +} + +# YY_FLUSH_BUFFER flushes the scanner's internal buffer so that the +# next time the scanner attempts to match a token, it will first +# refill the buffer using YY_INPUT. +# -- from the flex(1) man page +proc fits::YY_FLUSH_BUFFER {} { + variable yy_current_buffer + variable index_ + variable done_ + + set yy_current_buffer "" + set index_ 0 + set done_ 0 +} + +# yyrestart(new_file) may be called to point yyin at the new input +# file. The switch-over to the new file is immediate (any previously +# buffered-up input is lost). Note that calling yyrestart with yyin +# as an argument thus throws away the current input buffer and +# continues scanning the same input file. +# -- from the flex(1) man page +proc fits::yyrestart {new_file} { + variable yyin + + set yyin $new_file + YY_FLUSH_BUFFER +} + +# The nature of how it gets its input can be controlled by defining +# the YY_INPUT macro. YY_INPUT's calling sequence is +# "YY_INPUT(buf,result,max_size)". Its action is to place up to +# max_size characters in the character array buf and return in the +# integer variable result either the number of characters read or the +# constant YY_NULL (0 on Unix systems) to indicate EOF. The default +# YY_INPUT reads from the global file-pointer "yyin". +# -- from the flex(1) man page +proc fits::YY_INPUT {buf result max_size} { + variable yyin + + upvar $result ret_val + upvar $buf new_data + if {$yyin != ""} { + set new_data [read $yyin $max_size] + set ret_val [string length $new_data] + } else { + set new_data "" + set ret_val 0 + } +} + +# yy_scan_string sets up input buffers for scanning in-memory +# strings instead of files. Note that switching input sources does +# not change the start condition. +# -- from the flex(1) man page +proc fits::yy_scan_string {str} { + variable yy_current_buffer + variable yyin + + append yy_current_buffer $str + set yyin "" +} + +# unput(c) puts the character c back onto the input stream. It will +# be the next character scanned. +# -- from the flex(1) man page +proc fits::unput {c} { + variable yy_current_buffer + variable index_ + + set s [string range $yy_current_buffer 0 [expr {$index_ - 1}]] + append s $c + set yy_current_buffer [append s [string range $yy_current_buffer $index_ end]] +} + +# Returns all but the first n characters of the current token back to +# the input stream, where they will be rescanned when the scanner +# looks for the next match. yytext and yyleng are adjusted +# appropriately. +# -- from the flex(1) man page +proc fits::yyless {n} { + variable yy_current_buffer + variable index_ + variable yytext + variable yyleng + + set s [string range $yy_current_buffer 0 [expr {$index_ - 1}]] + append s [string range $yytext $n end] + set yy_current_buffer [append s [string range $yy_current_buffer $index_ end]] + set yytext [string range $yytext 0 [expr {$n - 1}]] + set yyleng [string length $yytext] +} + +# input() reads the next character from the input stream. +# -- from the flex(1) man page +proc fits::input {} { + variable yy_current_buffer + variable index_ + variable done_ + + if {[string length $yy_current_buffer] - $index_ < 1024} { + set new_buffer "" + set new_buffer_size 0 + if {$done_ == 0} { + YY_INPUT new_buffer new_buffer_size 1024 + append yy_current_buffer $new_buffer + if {$new_buffer_size == 0} { + set done_ 1 + } + } + if $done_ { + if {[string length $yy_current_buffer] - $index_ == 0} { + return {} + } + } + } + set c [string index $yy_current_buffer $index_] + incr index_ + return $c +} + +###### +# autogenerated yylex function created by fickle +###### + +# Whenever yylex() is called, it scans tokens from the global input +# file yyin (which defaults to stdin). It continues until it either +# reaches an end-of-file (at which point it returns the value 0) or +# one of its actions executes a return statement. +# -- from the flex(1) man page +proc fits::yylex {} { + variable yylval + + variable yytext + variable yylineno + variable yyleng + variable yy_current_buffer + variable yy_flex_debug + + variable index_ + variable done_ + variable state_table_ + +set STRING_ 257 +set MASK_ 258 +set NEW_ 259 +set SLICE_ 260 + + while {1} { + if {[string length $yy_current_buffer] - $index_ < 1024} { + if {$done_ == 0} { + set buffer_size 0 + set new_buffer "" + YY_INPUT new_buffer buffer_size 1024 + append yy_current_buffer $new_buffer + if {$buffer_size == 0 && \ + [string length $yy_current_buffer] - $index_ == 0} { + set done_ 1 + } + } + if $done_ { + if {[string length $yy_current_buffer] - $index_ == 0} { + break + } + } + } + set yyleng 0 + set matched_rule -1 + # rule 0: mask + if {[regexp -start $index_ -indices -line -nocase -- {\A(mask)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 0 + } + # rule 1: new + if {[regexp -start $index_ -indices -line -nocase -- {\A(new)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 1 + } + # rule 2: slice + if {[regexp -start $index_ -indices -line -nocase -- {\A(slice)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 2 + } + # rule 3: \"[^\"]*\" + if {[regexp -start $index_ -indices -line -nocase -- {\A(\"[^\"]*\")} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 3 + } + # rule 4: \'[^\']*\' + if {[regexp -start $index_ -indices -line -nocase -- {\A(\'[^\']*\')} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 4 + } + # rule 5: \{[^\}]*\} + if {[regexp -start $index_ -indices -line -nocase -- {\A(\{[^\}]*\})} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 5 + } + # rule 6: \S+\S+ + if {[regexp -start $index_ -indices -line -nocase -- {\A(\S+\S+)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 6 + } + # rule 7: \s + if {[regexp -start $index_ -indices -line -nocase -- {\A(\s)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 7 + } + # rule 8: . + if {[regexp -start $index_ -indices -line -nocase -- {\A(.)} $yy_current_buffer match] > 0 && \ + [lindex $match 1] - $index_ + 1 > $yyleng} { + set yytext [string range $yy_current_buffer $index_ [lindex $match 1]] + set yyleng [string length $yytext] + set matched_rule 8 + } + if {$matched_rule == -1} { + set yytext [string index $yy_current_buffer $index_] + set yyleng 1 + } + incr index_ $yyleng + # workaround for Tcl's circumflex behavior + if {[string index $yytext end] == "\n"} { + set yy_current_buffer [string range $yy_current_buffer $index_ end] + set index_ 0 + } + set numlines [expr {[llength [split $yytext "\n"]] - 1}] + switch -- $matched_rule { + 0 { +return $MASK_ + } + 1 { +return $NEW_ + } + 2 { +return $SLICE_ + } + 3 { +set yylval [string range $yytext 1 end-1]; return $STRING_ + } + 4 { +set yylval [string range $yytext 1 end-1]; return $STRING_ + } + 5 { +set yylval [string range $yytext 1 end-1]; return $STRING_ + } + 6 { +set yylval $yytext; return $STRING_ + } + 7 { +# ignore whitespace + } + 8 { +set yylval $yytext; return $yylval + } + default + { puts stderr "unmatched token: $yytext"; exit -1 } + } + incr yylineno $numlines + } + return 0 +} +###### +# end autogenerated fickle functions +###### + |