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|
#!/usr/bin/tclsh
# Part of MCU 8051 IDE ( http://mcu8051ide.sf.net )
############################################################################
# Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012 by Martin Ošmera #
# martin.osmera@gmail.com #
# #
# This program is free software; you can redistribute it and#or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the #
# Free Software Foundation, Inc., #
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #
############################################################################
# >>> File inclusion guard
if { ! [ info exists _R_ASMSYNTAXHIGHLIGHT_TCL ] } {
set _R_ASMSYNTAXHIGHLIGHT_TCL _
# <<< File inclusion guard
# --------------------------------------------------------------------------
# DESCRIPTION
# Implements syntax highlighting interface for reallocable assembly
# --------------------------------------------------------------------------
namespace eval R_ASMsyntaxHighlight {
## COMPILER DIRECTIVES
# directives without arguments
variable directive_type0 {
.ELSE .ENDIF .PAGE .EVEN .ODD
}
# directives with argument(s) but without any label
variable directive_type1 {
.OPTSDCC .WORD .DW .INCLUDE .SETDP .GLOBL .IF .ORG .AREA .MODULE .TITLE
.SBTTL .ASCII .ASCIS .ASCIZ .RADIX .BYTE .DB .BLKB .BLKW .DS
}
# symbol operators
variable expr_symbols {
= + - * / > < % & | % ^
}
# control sequencies without any argument
variable controls_type0 {
NOLIST NOMOD NOOBJECT NOPAGING NOPRINT
NOSYMBOLS EJECT LIST PAGING SYMBOLS
}
# control sequencies with exactly 1 argument
variable controls_type1 {
PAGEWIDTH PAGELENGTH PRINT TITLE OBJECT DATE INCLUDE
}
# list of all reserved keywords
variable keyword_lists [list \
${::ASMsyntaxHighlight::instructions} \
$directive_type0 $directive_type1 \
]
variable inline_asm ;# Is inline assembler
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable lineStart ;# Index of line start
variable lineEnd ;# Index of line end
variable data ;# Content of the line
variable data_backup ;# Original content of the line
variable last_index ;# Last parse index
variable last_index_backup ;# Auxiliary variable (some index)
variable seg_0 ;# 1st field of the line
variable seg_1 ;# 2nd field of the line
variable seg_2 ;# 3rd field of the line
variable seg_0_start ;# Start index of seg_0
variable seg_1_start ;# Start index of seg_1
variable seg_2_start ;# Start index of seg_2
variable seg_0_end ;# End index of seg_0
variable seg_1_end ;# End index of seg_1
variable seg_2_end ;# End index of seg_2
variable operand ;# Data of the current operand
variable opr_end ;# End index of the current operand
variable opr_start ;# Start index of the current operand
variable validation_L0 1 ;# Bool: Basic validation enabled
variable validation_L1 1 ;# Bool: Advancet validation enabled
## Define highlighting text tags in the given text widget
# @parm Widget text_widget - ID of the target text widget
# @parm Int fontSize - font size
# @parm String fontFamily - font family
# @parm List highlight=default - Highlighting tags definition
# @parm Bool nobold=0 - Ignore bold flag
# @return void
proc create_tags {text_widget fontSize fontFamily {highlight {}} {nobold 0}} {
# Handle arguments
if {$highlight == {}} { ;# highlighting definition
set highlight $::ASMsyntaxHighlight::highlight_tags
}
# Iterate over highlighting tags definition
foreach item $highlight {
# Create array of tag attributes
for {set i 0} {$i < 5} {incr i} {
set tag($i) [lindex $item $i]
}
# Foreground color
if {$tag(1) == {}} {
set tag(1) black
}
# Fonr slant
if {$tag(3) == 1} {
set tag(3) italic
} else {
set tag(3) roman
}
# Font weight
if {$tag(4) == 1 && !$nobold} {
set tag(4) bold
} else {
set tag(4) normal
}
# Create the tag in the target text widget
$text_widget tag configure $tag(0) \
-foreground $tag(1) \
-font [font create \
-overstrike $tag(2) \
-slant $tag(3) \
-weight $tag(4) \
-size -$fontSize \
-family $fontFamily \
]
}
# Add tag error
$text_widget tag configure tag_error -underline 1
}
## Perform syntax highlight on the given line in the given widget
# @parm Widget p_editor - Text widget
# @parm Int linenumber - Number of line to highlight
# @parm Bool inlineasm=0 - Inline assembler
# @parm Int linestart=0 - Start index
# @parm Int lineend=end - End index
# @return Bool - result
proc highlight {p_editor linenumber {inlineasm 0} {linestart {}} {lineend {}}} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable lineStart ;# Index of line start
variable lineEnd ;# Index of line end
variable inline_asm ;# Is inline assembler
variable seg_0 {} ;# 1st field of the line
variable seg_1 {} ;# 2nd field of the line
variable seg_2 {} ;# 3rd field of the line
variable seg_0_start ;# Start index of seg_0
variable seg_1_start ;# Start index of seg_1
variable seg_2_start ;# Start index of seg_2
variable seg_0_end ;# End index of seg_0
variable seg_1_end ;# End index of seg_1
variable seg_2_end ;# End index of seg_2
variable last_index ;# Last parse index
variable data ;# Content of the line
variable validation_L0 ;# Bool: Basic validation enabled
# Parse input arguments
set editor $p_editor
set lineNumber $linenumber
set inline_asm $inlineasm
if {$linestart == {}} {
set lineStart $lineNumber.0
} else {
set lineStart $lineNumber.$linestart
}
if {$lineend == {}} {
set lineEnd [$editor index "$lineStart lineend"]
} else {
set lineEnd $lineNumber.$lineEnd
}
if {$linestart != {}} {
set start_offset $linestart
} else {
set start_offset 0
}
set data [$editor get $lineStart $lineEnd]
set ::ASMsyntaxHighlight::operands_count 0
set ::ASMsyntaxHighlight::opr_types {}
if {$inline_asm} {
delete_tags
}
# check if the line is not empty
if {[regexp {^\s*$} $data]} {
return 0
}
set line_length [string length $data]
if {$line_length == 0} {
return 0
}
# determinate comment field and highlight it (the last field)
set comment_start {}
if {[regexp {;} $data]} {
# remove 'string' from the line
set comment_data [hide_strings $data]
if {[regexp {;.*$} $comment_data comment_start]} {
set comment_start [string length $comment_start]
set comment_start [expr {$line_length - $comment_start}]
# remove comment and trailing space from the line
if {$comment_start == 0} {
set data {}
delete_tags
} else {
set data [string range $data 0 [expr {$comment_start - 1}]]
regsub {\s+$} $data {} data
}
incr comment_start $start_offset
}
}
# Handle line containing only comment
if {![string length $data]} {
if {!$inline_asm} {
delete_tags
}
$editor tag add tag_comment $lineNumber.$comment_start $lineEnd
return 1
}
# determinate 1st segment of the line
regexp {^\s*[^\s:\=]+:?:?} $data seg_0
set seg_0_end [string length $seg_0]
regsub {^\s+} $seg_0 {} seg_0
set seg_0_start [string length $seg_0]
set seg_0_start [expr {$seg_0_end - $seg_0_start}]
set data [string replace $data 0 [expr {$seg_0_end - 1}]]
incr seg_0_end $start_offset
incr seg_0_start $start_offset
set last_index $seg_0_end
#
# SYNTAX HIGHLIGHT
#
# delete existing tags within the line
if {!$inline_asm} {
delete_tags
}
# highlight comment
if {$comment_start != {}} {
$editor tag add tag_comment $lineNumber.$comment_start $lineEnd
}
# highlight 1st and 2nd field
set seg_0_info [parse_segment $seg_0_start $seg_0_end $seg_0]
# Conditional parsing with validation
switch -- [lindex $seg_0_info 0] {
{label} {
determinate_segment_1
set seg_1_info [parse_segment $seg_1_start $seg_1_end $seg_1]
switch -- [lindex $seg_1_info 0] {
{label} {
put_error_on_segment 1
}
{instruction} {
determinate_segment_2
parse_operands
}
{directive_1} {}
{directive_0} {}
{unknown} {
$editor tag add tag_macro \
$lineNumber.$seg_1_start $lineNumber.$seg_1_end
if {
$validation_L0 &&
([regexp {^\d} $seg_1] || ![regexp {^\w+$} $seg_1])
} then {
put_error_on_segment 1
}
determinate_segment_2
parse_operands
}
default {
put_error_on_segment 1
}
}
}
{instruction} {
determinate_segment_2
parse_operands
}
{directive_1} {
determinate_segment_2
if {[string tolower $seg_0] == {.optsdcc}} {
$editor tag add tag_string $lineNumber.$seg_0_end $lineEnd
} else {
parse_expressions
}
}
{directive_0} {
determinate_segment_1
put_error_on_segment 1
determinate_segment_2
put_error_on_segment 2
}
{unknown} {
determinate_segment_1
set seg_1_info [parse_segment $seg_1_start $seg_1_end $seg_1]
switch -- [lindex $seg_1_info 0] {
{label} {
put_error_on_segment 0
}
{instruction} {
put_error_on_segment 0
determinate_segment_2
parse_operands
}
{directive_1} {
put_error_on_segment 0
determinate_segment_2
parse_expressions
}
{directive_0} {
put_error_on_segment 0
determinate_segment_2
put_error_on_segment 2
}
{unknown} {
}
{assignment} {
determinate_segment_2
incr seg_0_start -1
parse_expressions
$editor tag add tag_constant $lineNumber.$seg_0_start $lineNumber.$seg_0_end
}
default {
}
}
}
default {}
}
return 1
}
## Remove previously defined syntax highlighting tags
# @return void
proc delete_tags {} {
variable editor ;# ID of the text widget
variable lineStart ;# Index of line start
variable lineEnd ;# Index of line end
set lineStart_truestart [$editor index [list $lineStart linestart]]
# Remove tag error
$editor tag remove tag_error $lineStart_truestart $lineEnd
# Remove tags according to pattern
foreach tag $::ASMsyntaxHighlight::highlight_tags {
$editor tag remove [lindex $tag 0] $lineStart_truestart $lineEnd
}
}
## Take back extraction of segment 1
# @return void
proc determinate_segment_1_take_back {} {
variable data ;# Content of the line
variable data_backup ;# Original content of the line
variable last_index ;# Last parse index
variable last_index_backup ;# Auxiliary variable (some index)
set data $data_backup
set last_index $last_index_backup
}
## Extract segment 1 from the line
# @return void
proc determinate_segment_1 {} {
variable seg_1 ;# 2nd field of the line
variable seg_1_start ;# Start index of seg_1
variable seg_1_end ;# End index of seg_1
variable last_index ;# Last parse index
variable data ;# Content of the line
variable data_backup ;# Original content of the line
variable last_index_backup ;# Auxiliary variable (some index)
# Line is empty
if {![regexp {^\s*[^\s\.]+} $data seg_1]} {
set seg_1 {}
set seg_1_end $last_index
set seg_1_start $last_index
# Line is not empty
} else {
set data_backup $data
set last_index_backup $last_index
set seg_1_end [string length $seg_1]
set data [string replace $data 0 $seg_1_end]
incr seg_1_end $last_index
regsub {^\s+} $seg_1 {} seg_1
set seg_1_start [string length $seg_1]
set seg_1_start [expr {$seg_1_end - $seg_1_start}]
set last_index $seg_1_end
incr last_index
}
}
## Extract segment 2 from the line
# @return void
proc determinate_segment_2 {} {
variable seg_2 ;# 3rd field of the line
variable seg_2_start ;# Start index of seg_2
variable seg_2_end ;# End index of seg_2
variable last_index ;# Last parse index
variable data ;# Content of the line
# determinate the last segment of the line
set seg_2_start $last_index
if {[regexp {^\s+} $data space]} {
incr seg_2_start [string length $space]
}
regsub {^\s+} $data {} seg_2
regsub {\s+$} $seg_2 {} seg_2
set seg_2_end [string length $seg_2]
incr seg_2_end $last_index
set data {}
}
## Shorthand for 'parse_expression $seg_2 $seg_2_start $seg_2_end'
# @return void
proc parse_expressions {} {
variable seg_2 ;# 3rd field of the line
variable seg_2_start ;# Start index of seg_2
variable seg_2_end ;# End index of seg_2
parse_expression $seg_2 $seg_2_start $seg_2_end
}
## Parse given segment, highlight it and determinate its type
# @parm Int start - start column
# @parm int end - end column
# @parm String segment_data - content of segment to parse
# @return List - {segment_type expression_length} or {segment_type {}} or {{} {}}
proc parse_segment {start end segment_data} {
variable controls_type0 ;# control sequencies without any argument
variable controls_type1 ;# control sequencies with exactly 1 argument
variable inline_asm ;# Is inline assembler
variable keyword_lists ;# list of all reserved keywords
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable lineStart ;# Index of line start
variable lineEnd ;# Index of line end
variable data ;# Content of the line
variable validation_L0 ;# Bool: Basic validation enabled
# Local variables
set seg_type {} ;# segment type
set expr_len 0 ;# length of expression
# Handle empty segments
if {$segment_data == {}} {
return "$seg_type $expr_len"
}
# Convert segment data to uppre case (patterns are uppper-case)
set segment_data [string toupper $segment_data]
# Try to determinate segment type and perform highlight
foreach keyword_list $keyword_lists \
tag {tag_instruction tag_directive tag_directive} \
type {instruction directive_0 directive_1} {
if {[lsearch -ascii -exact $keyword_list $segment_data] != -1} {
$editor tag add $tag $lineNumber.$start $lineNumber.$end
set seg_type $type
break
}
}
if {$seg_type == {}} {
if {[regexp -nocase {^[^\s]+\:\:?$} $segment_data]} {
$editor tag add tag_label $lineNumber.$start $lineNumber.$end
set seg_type label
} elseif {$segment_data == {=} || $segment_data == {==}} {
$editor tag add tag_symbol $lineNumber.$start $lineNumber.$end
set seg_type {assignment}
} else {
set seg_type {unknown}
}
}
# Return result
return "$seg_type $expr_len"
}
## Tag the given segment as error
# @parm Int segment_number - number of the target segment
# @return void
proc put_error_on_segment {segment_number} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable validation_L0 ;# Bool: Basic validation enabled
variable seg_0_start ;# Start index of seg_0
variable seg_1_start ;# Start index of seg_1
variable seg_2_start ;# Start index of seg_2
variable seg_0_end ;# End index of seg_0
variable seg_1_end ;# End index of seg_1
variable seg_2_end ;# End index of seg_2
return
if {!$validation_L0} {
return
}
# Determinate start and end index
switch -- $segment_number {
0 {
set start $seg_0_start
set end $seg_0_end
}
1 {
set start $seg_1_start
set end $seg_1_end
}
2 {
set start $seg_2_start
set end $seg_2_end
}
}
}
## Parse attributes in defintion of macro instruction
# @retunr void
proc parse_arguments {} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable seg_2_start ;# Start index of seg_2
variable seg_2 ;# 3rd field of the line
variable validation_L0 ;# Bool: Basic validation enabled
if {[regexp {^\s*$} $seg_2]} {return 0}
while {1} {
# Handle redutant commas
while {1} {
if {![regexp {^\s*\,} $seg_2]} {break}
set space_len 0
if {[regexp {^\s+} $seg_2 space_len]} {
set space_len [string length $space_len]
}
incr seg_2_start $space_len
set seg_2 [string range $seg_2 [expr {$space_len + 1}] end]
$editor tag add tag_oper_sep \
$lineNumber.$seg_2_start \
$lineNumber.[expr {$seg_2_start + 1}]
incr seg_2_start
}
# Determinate argument
if {![regexp {^[^\,]+} $seg_2 argument]} {break}
set argument_len_org [string length $argument]
set seg_2 [string range $seg_2 $argument_len_org end]
set argument [string trimleft $argument]
set argument_len [string length $argument]
incr seg_2_start [expr {$argument_len_org - $argument_len}]
# Highlight argument
$editor tag add tag_constant \
$lineNumber.$seg_2_start \
$lineNumber.[expr {$seg_2_start + $argument_len}]
set argument [string trimright $argument]
incr seg_2_start $argument_len
# highlight argument separator
if {[string index $seg_2 0] == {,}} {
set sep_end $seg_2_start
incr sep_end
$editor tag add tag_oper_sep $lineNumber.$seg_2_start $lineNumber.$sep_end
incr seg_2_start
set seg_2 [string range $seg_2 1 end]
}
}
}
## Highlight all operands (segment 2) and their separators
# @return void
proc parse_operands {} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable seg_2_start ;# Start index of seg_2
variable seg_2 ;# 3rd field of the line
variable operand ;# Data of the current operand
variable opr_end ;# End index of the current operand
variable opr_start ;# Start index of the current operand
variable validation_L0 ;# Bool: Basic validation enabled
variable validation_L1 ;# Bool: Advancet validation enabled
if {[regexp {^\s*$} $seg_2]} {return 0}
set ::ASMsyntaxHighlight::operands_count 0
set ::ASMsyntaxHighlight::opr_types {}
# split data into single operands
set i 0
set last_index $seg_2_start
set original_data $seg_2
set data [hide_strings $seg_2]
while {1} {
# Handle redutant commas
while {1} {
if {![regexp {^\s*\,} $data]} {break}
set space_len 0
if {[regexp {^\s+} $data space_len]} {
set space_len [string length $space_len]
}
incr last_index $space_len
set data [string range $data [expr {$space_len + 1}] end]
set original_data [string range $original_data [expr {$space_len + 1}] end]
$editor tag add tag_oper_sep \
$lineNumber.$last_index \
$lineNumber.[expr {$last_index + 1}]
incr last_index
}
# gain operand data
if {![regexp {^[^\,]+} $data operand]} {break}
set operand_len [string length $operand]
set data [string range $data $operand_len end]
set operand [string range $original_data 0 [expr {$operand_len - 1}]]
set original_data [string range $original_data $operand_len end]
# determinate start index
if {[regexp {^\s+} $operand space]} {
set space_len [string length $space]
set opr_start [expr {$last_index + $space_len}]
set operand [string range $operand $space_len end]
} else {
set opr_start $last_index
}
# determinate end index
if {[regexp {\s+$} $operand space]} {
set space_len [string length $space]
set opr_end [expr {$operand_len - $space_len}]
set operand [string range $operand 0 $opr_end]
} else {
set opr_end $operand_len
}
incr opr_end $last_index
incr last_index $operand_len
set operand [string trimright $operand "\t "]
if {$validation_L1} {
add_aperand_to__opr_types
}
highlight_operand
incr ::ASMsyntaxHighlight::operands_count
# highlight operand separator
if {[string index $data 0] == {,}} {
set sep_end $last_index
incr sep_end
$editor tag add tag_oper_sep $lineNumber.$last_index $lineNumber.$sep_end
incr last_index
set data [string range $data 1 end]
set original_data [string range $original_data 1 end]
}
incr i
}
}
## Append current operand (variable operand) to list of operand types in ::ASMsyntaxHighlight::opr_types
# Purpose of this function is to enable searching in instruction
#+ details panel while this syntaxt highlight pattern is used
# @return void
proc add_aperand_to__opr_types {} {
variable operand ;# Data of the current operand
set opr [string toupper $operand]
switch -- [string index $opr 0] {
{#} {lappend ::ASMsyntaxHighlight::opr_types {#}}
{/} {lappend ::ASMsyntaxHighlight::opr_types {/}}
{@} {lappend ::ASMsyntaxHighlight::opr_types $opr}
default {
if {[lsearch -ascii -exact {R0 R1 R2 R3 R4 R5 R6 R7 DPTR A AB C} $opr] != -1} {
lappend ::ASMsyntaxHighlight::opr_types $opr
} else {
lappend ::ASMsyntaxHighlight::opr_types {D}
}
}
}
}
## Highlight current operand
# @return void
proc highlight_operand {} {
variable editor ;# ID of the text widget
variable operand ;# Data of the current operand
variable opr_end ;# End index of the current operand
variable opr_start ;# Start index of the current operand
variable validation_L0 ;# Bool: Basic validation enabled
variable inline_asm ;# Is inline assembler
variable lineNumber ;# Number of current line
## Determinate addressing type
set addr_type [string index $operand 0]
# Immediate adresing
if {$addr_type == {#}} {
set operand [string range $operand 1 end]
# Immediate char value
if {[string index $operand 0] == {'} && [string index $operand end] == {'}} {
set len [string length $operand]
if {$len > 3} {
put_tag_on_operand tag_string
} else {
put_tag_on_operand tag_imm_char
}
# Label in inline assembler
} elseif {[regexp {^\d+\$$} $operand]} {
put_tag_on_operand tag_imm_constant
# Operand has no value => incorrect operand
} elseif {[regexp { |\(|\)|\+|\-|\%|\=|\>|\<|\*|\/} $operand]} {
parse_expression $operand $opr_start $opr_end
$editor tag add tag_symbol \
$lineNumber.$opr_start $lineNumber.$opr_start+1c
} elseif {
$validation_L0 &&
([string length $operand] == 0 || ![regexp {^[\w\.\\]+$} $operand])
} then {
# put_tag_on_operand tag_error
# Operand value determinated successfully
} else {
parse_operand_auxiliary2 {
tag_imm_unknown tag_imm_hex tag_imm_dec
tag_imm_oct tag_imm_bin tag_imm_char
tag_imm_constant tag_string
}
}
# Indirect adresing
} elseif {$addr_type == {@}} {
set operand [string range $operand 1 end]
put_tag_on_operand tag_indirect
# Check for operand validity
if {!$validation_L0} {return}
set operand [string toupper $operand]
# Direct bit adresing
} elseif {$addr_type == {/}} {
set operand [string range $operand 1 end]
if {[regexp {\(|\)|\+|\-|\%|\=|\>|\<|\*|\/} $operand]} {
parse_expression $operand $opr_start $opr_end
$editor tag add tag_symbol \
$lineNumber.$opr_start $lineNumber.$opr_start+1c
} elseif {
$validation_L0 &&
([string length $operand] == 0 || ![regexp {^'?[\w\.]+'?$} $operand])
} then {
# Operand has no value => incorrect operand
# put_tag_on_operand tag_error
} else {
parse_operand_auxiliary $::ASMsyntaxHighlight::spec_bits {
tag_unknown_base tag_hex tag_dec
tag_oct tag_bin tag_char
tag_constant tag_string
}
}
# Another kind of direct adresing
} else {
parse_operand_auxiliary $::ASMsyntaxHighlight::spec_registers {
tag_unknown_base tag_hex tag_dec
tag_oct tag_bin tag_char
tag_constant tag_string
}
}
}
## Auxiliary procedure for procedure highlight_operand
# @parm List SFR_set - List of SFR keywords
# @parm List tag_list - List of tags for procedure parse_operand_auxiliary2
# @return void
proc parse_operand_auxiliary {SFR_set tag_list} {
variable operand ;# Data of the current operand
# SFR
if {[lsearch -ascii -exact $SFR_set [string toupper $operand]] != -1} {
put_tag_on_operand tag_sfr
# Something else than SFR
} else {
parse_operand_auxiliary2 $tag_list
}
}
## Auxiliary procedure for procedures highlight_operand and parse_operand_auxiliary
# @parm List tag_list - list of text tags (see code)
# @return void
proc parse_operand_auxiliary2 {tag_list} {
variable operand ;# Data of the current operand
variable opr_start ;# Start index of the current operand
variable opr_end ;# End index of the current operand
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable validation_L0 ;# Bool: Basic validation enabled
variable inline_asm ;# Is inline assembler
# Label
if {[regexp {^\d+\$$} $operand]} {
put_tag_on_operand [lindex $tag_list 6]
# Expression
} elseif {[regexp {\(|\)|\+|\-|\%|\=|\>|\<|\*|\/} $operand]} {
parse_expression $operand $opr_start $opr_end
# Dot notation (bit addressing)
} elseif {[regexp {^\w+\.\w+$} $operand]} {
set opr [split $operand {.}]
set operand [lindex $opr 0]
set opr_true_end $opr_end
set opr_end $opr_start
incr opr_end [string length $operand]
parse_operand_auxiliary $::ASMsyntaxHighlight::spec_registers $tag_list
set opr_start [expr {$opr_end + 1}]
$editor tag add tag_symbol $lineNumber.$opr_end $lineNumber.$opr_start
set opr_end $opr_true_end
set operand [lindex $opr 1]
parse_operand_auxiliary2 $tag_list
# Direct value
} elseif {[regexp {^(\d|')} $operand]} {
# gain information about the openand (radix and decimal value)
set opr_info [which_radix 0 $operand]
set opr_base [lindex $opr_info 0]
set opr_in_dec [lindex $opr_info 1]
# Radix determinated incorrectly => unknown number
if {$opr_base == {}} {
put_tag_on_operand [lindex $tag_list 0]
# Radix determinated correctly - continue normaly
} else {
# highlight according to numeric base
switch -- $opr_base {
{hex} {put_tag_on_operand [lindex $tag_list 1]}
{dec} {put_tag_on_operand [lindex $tag_list 2]}
{oct} {put_tag_on_operand [lindex $tag_list 3]}
{bin} {put_tag_on_operand [lindex $tag_list 4]}
{ascii} {put_tag_on_operand [lindex $tag_list 5]}
{string} {put_tag_on_operand [lindex $tag_list 7]}
}
}
# defined by a symbolic name
} else {
put_tag_on_operand [lindex $tag_list 6]
}
}
## Highlight current operand by the given tag
# @parm String tag_name - tag name
# @return void
proc put_tag_on_operand {tag_name} {
variable lineNumber ;# Number of current line
variable opr_end ;# End index of the current operand
variable opr_start ;# Start index of the current operand
variable editor ;# ID of the text widget
$editor tag add $tag_name $lineNumber.$opr_start $lineNumber.$opr_end
}
## Determinate numeric base of the given number
# @parm Bool norange - 1 == determinate decimal value (sometimes...) and validate it (see code)
# @parm String number - number to analyze
# @return List - {base decimal_value} or {base "error"}
proc which_radix {norange number} {
set original_len [string length $number]
set len [string length [string trimleft $number {0}]]
if {$original_len > 1 && $len == 1} {
incr len
}
incr len -1
set radix [string index $number end]
set number [string range $number 0 {end-1}]
set dec_val error
set base {}
# Character or string
if {$radix == {'}} {
if {[string index $number 0] == {'}} {
set number [string range $number 1 end]
set base ascii
if {[string length $number] == 1} {
set dec_val 0
} elseif {[string length $number] > 1} {
set base string
set dec_val 0
}
}
# Prefix hexadecimal notation
} elseif {[string range $number 0 1] == {0x} || [string range $number 0 1] == {0X}} {
append number $radix
set base hex
if {[regexp {^0[Xx][A-Fa-f0-9]+$} $number]} {
set dec_val 0
}
# Regular numbers
} else {
set radix [string tolower $radix]
switch -- $radix {
{h} { ;# Hexadecimal
set base hex
if {$norange || ($len <= 4 && $len >= 1)} {
if {[regexp {^[A-Fa-f0-9]*$} $number]} {
set dec_val 0
}
}
}
{d} { ;# Decimal
set base dec
if {$norange || ($len <= 5 && $len >= 1)} {
if {[regexp {^[0-9]*$} $number]} {
set dec_val $number
}
}
}
{o} { ;# Octal
set base oct
if {$norange} {
if {[regexp {^[0-7]*$} $number]} {
set dec_val 0
}
} elseif {$len <= 6 && $len >= 1} {
if {[regexp {^[0-7]*$} $number]} {
if {$len != 3} {
set dec_val 0
} else {
if {[string index $number 0] <= 3} {
set dec_val 0
}
}
}
}
}
{q} { ;# Octal
set base oct
if {$norange} {
if {[regexp {^[0-7]*$} $number]} {
set dec_val 0
}
} elseif {$len <= 6 && $len >= 1} {
if {[regexp {^[0-7]*$} $number]} {
if {$len != 3} {
set dec_val 0
} else {
if {[string index $number 0] <= 3} {
set dec_val 0
}
}
}
}
}
{b} { ;# Binary
set base bin
if {$norange || ($len <= 16 && $len >= 1)} {
if {[regexp {^[01]*$} $number]} {
set dec_val 0
}
}
}
default { ;# Default
set dec_val {}
}
}
}
# done ...
return [list $base $dec_val]
}
## Highlight expressions (eg. '( 10d - X MOD 55h)')
# @parm String data - expression to highlight
# @parm Int start_index - expresssion start index
# @parm Int end_index - expresssion end index
# @return void
proc parse_expression {data start_index end_index} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable expr_symbols ;# symbol operators
variable validation_L0 ;# Bool: Basic validation enabled
variable validation_L1 ;# Bool: Advancet validation enabled
# Adjust data to fit the given boundaries
set data_len [string length $data]
set dif [expr {$end_index - $start_index - $data_len}]
if {$dif != 0} {
set space [string repeat { } $dif]
set data $space$data
}
# Remove strings
set e_idx 0
while {1} {
if {![regexp -start $e_idx -- {'[^']*'} $data string_data]} {
break
}
set len [string length $string_data]
set s_idx [string first {'} $data $e_idx]
set e_idx [expr {$s_idx + $len}]
if {$len > 2} {
set data [string replace $data \
[expr {$s_idx + 1}] [expr {$e_idx - 2}] \
[string repeat { } [expr {$len - 2}]] \
]
}
}
# remove and highlight '('
set opened_par 0
while {1} {
set symbol_idx [string first {(} $data]
if {$symbol_idx == -1} {break}
incr opened_par
set data [string replace $data $symbol_idx $symbol_idx { }]
incr symbol_idx $start_index
$editor tag add tag_symbol $lineNumber.$symbol_idx $lineNumber.[expr {$symbol_idx + 1}]
}
# remove and highlight ')'
while {1} {
set symbol_idx [string first {)} $data]
if {$symbol_idx == -1} {break}
incr opened_par -1
set data [string replace $data $symbol_idx $symbol_idx { }]
incr symbol_idx $start_index
$editor tag add tag_symbol $lineNumber.$symbol_idx $lineNumber.[expr {$symbol_idx + 1}]
}
# highlight expr. symbols (+1 chars) and remove them from the string
set adjusted_data [string toupper $data]
regsub {\t} $adjusted_data { } adjusted_data
# highlight expr. symbols (1 char) and remove them from the string
foreach symbol $expr_symbols {
while {1} {
set symbol_idx [string first $symbol $data]
if {$symbol_idx == -1} {break}
set original_symbol_idx $symbol_idx
set symbol_idx_org_1 [expr {$symbol_idx + 1}]
set data [string replace $data $symbol_idx $symbol_idx { }]
incr symbol_idx $start_index
set symbol_idx_1 [expr {$symbol_idx + 1}]
$editor tag add tag_symbol $lineNumber.$symbol_idx $lineNumber.$symbol_idx_1
}
}
# highlight other parts
set last_index $start_index
set original_data $data
set data [hide_strings $data]
while {1} {
if {![regexp {[^\s]+} $data value]} {break}
set value_S_idx [string first $value $data]
set value_len [string length $value]
set value_E_idx $value_len
incr value_E_idx $value_S_idx
set value [string range $original_data $value_S_idx $value_E_idx]
set data [string range $data $value_E_idx end]
set original_data [string range $original_data $value_E_idx end]
set tmp_idx $value_E_idx
incr value_S_idx $last_index
incr value_E_idx $last_index
incr last_index $tmp_idx
highlight_value [string trimright $value] $value_S_idx $value_E_idx
}
}
## Highlight constant values
# @parm String data - string to highlight
# @parm Int start_index - start index
# @parm Int end_index - end index
# @return void
proc highlight_value {data start_index end_index} {
variable editor ;# ID of the text widget
variable lineNumber ;# Number of current line
variable validation_L0 ;# Bool: Basic validation enabled
# Dot notation -- bit addressing
if {[regexp {^\w+\.\w+$} $data]} {
set data [split $data {.}]
set end_index_org $end_index
set end_index $start_index
incr end_index [string length [lindex $data 0]]
highlight_value [lindex $data 0] $start_index $end_index
$editor tag add tag_symbol $lineNumber.$end_index $lineNumber.[expr {$end_index + 1}]
incr end_index
highlight_value [lindex $data 1] $end_index $end_index_org
return
} elseif {[regexp {^(\d|')} $data]} {
# Gain information about the value
set opr_info [which_radix 1 $data]
set opr_base [lindex $opr_info 0]
set opr_in_dec [lindex $opr_info 1]
# Highlight value according to info
if {$opr_base == {}} {
$editor tag add tag_unknown_base $lineNumber.$start_index $lineNumber.$end_index
return
}
# Highlight according to numeric base
switch -- $opr_base {
{hex} { ;# Hexadecimal
$editor tag add tag_hex $lineNumber.$start_index $lineNumber.$end_index
}
{dec} { ;# Decimal
$editor tag add tag_dec $lineNumber.$start_index $lineNumber.$end_index
}
{oct} { ;# Octal
$editor tag add tag_oct $lineNumber.$start_index $lineNumber.$end_index
}
{bin} { ;# Binary
$editor tag add tag_bin $lineNumber.$start_index $lineNumber.$end_index
}
{ascii} { ;# Char
$editor tag add tag_char $lineNumber.$start_index $lineNumber.$end_index
}
{string} { ;# String
$editor tag add tag_string $lineNumber.$start_index $lineNumber.$end_index
}
}
return
}
# Constant
$editor tag add tag_constant $lineNumber.$start_index $lineNumber.$end_index
}
## Replace all single quoted string with underscores (''abc'' -> '_____')
# @parm String data - input data
# @return String - output data
proc hide_strings {data} {
# Return string which dowsn't contain '''
if {[string first {'} $data] == -1} {return $data}
# Perform replacement
while {1} {
if {![regexp {'[^']*'} $data string]} {
break
}
regsub {'[^']*'} $data [string repeat {_} \
[string length $string] \
] data
}
# Return result
return $data
}
}
# >>> File inclusion guard
}
# <<< File inclusion guard
|