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formext.lang
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formext.lang
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<?xml version="1.0" encoding="UTF-8"?>
<!--
This file (formext.lang) defines the FORM language for GtkSourceView.
The main difference from form.lang is that it introduces some extra
styles to make different elements of the FORM grammar better
distinguishable. Those custom styles are not present in the default
style files for GtkSourceView and require a special style file. In this
case the special style file is vlad-dark.xml.
The idea behind introducing formext.lang is that the user can use it as
a minimal working example to create or extend his/her favourite style file.
Here vlad-dark.xml is just the style that I happen to prefer. You are free
to modify it together with the <styles>-container of this file to create
something that best suits you needs.
Author: Vladyslav Shtabovenko <dev.vsht@posteo.de>
Copyright (C) 2018 Vladyslav Shtabovenko <dev.vsht@posteo.de>
formext.lang is covered by the GNU General Public License 3.
formext.lang 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 3 of the License,
or (at your option) any later version.
formext.lang 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 formext.lang. If not, see http://www.gnu.org/licenses/.
FORM is a language for symbolic manipulations developed by
Jos Vermaseren of Nikhef, the Dutch National Institute for
Subatomic Physic. FORM is widely used in the theoretical high
energy physics to automatize complicated Quantum Field Theory (QFT)
calculations, in particular the evaluation of Feynman diagrams.
For more information regarding FORM see
https://www.nikhef.nl/~form/
https://github.com/vermaseren/form
https://en.wikipedia.org/wiki/FORM_(symbolic_manipulation_system)
Here are links to some useful material that I extensively used while
creating form.lang:
https://developer.gnome.org/gtksourceview/stable/lang-reference.html
https://wiki.gnome.org/Projects/GtkSourceView/StyleSchemes
https://github.com/niklongstone/regular-expression-cheat-sheet
-->
<language id="formext" _name="FORM (with custom styling)" version="2.0" _section="Scientific">
<metadata>
<property name="mimetypes">text/x-form</property>
<property name="globs">*.frm;*.prc;*.h;*.hh</property>
<property name="line-comment-start">*</property>
</metadata>
<styles>
<style id="st-escaped-character" _name="Escaped Character" map-to="def:special-char"/>
<style id="st-separator-comment" _name="Separator line" map-to="def:note"/>
<style id="st-fold-comment" _name="Fold" map-to="form:fold"/>
<style id="st-magic-comment" _name="Magic comment" map-to="def:doc-comment-element"/>
<style id="st-line-comment" _name="Comment" map-to="def:comment"/>
<style id="st-boolean" _name="Boolean operator" map-to="def:operator"/>
<style id="st-operator" _name="Operator" map-to="def:operator"/>
<style id="st-numeric" _name="Number" map-to="def:decimal"/>
<style id="st-dollar-variable" _name="Dollar variable" map-to="def:special-constant"/>
<style id="st-builtin-preprocessor-variable" _name="Built in preprocessor variable" map-to="def:constant"/>
<style id="st-preprocessor-variable" _name="Preprocessor variable" map-to="form:preprocessor-variable"/>
<style id="st-string" _name="String" map-to="def:string"/>
<style id="st-set" _name="Built in set" map-to="def:type"/>
<style id="st-preprocessor-statement" _name="Preprocessor statement" map-to="def:preprocessor"/>
<style id="st-preprocessor-setup-parameter" _name="Setup parameter" map-to="def:preprocessor"/>
<style id="st-function-tensor" _name="Tensor function" map-to="def:function"/>
<style id="st-function-reserved" _name="Reserved function" map-to="def:function"/>
<style id="st-function-regular" _name="Regular function" map-to="def:function"/>
<style id="st-module" _name="Module instruction" map-to="form:module"/>
<style id="st-statement-declaration" _name="Declaration statement" map-to="def:type"/>
<style id="st-statement-specification" _name="Specification statement" map-to="def:statement"/>
<style id="st-statement-control" _name="Control statement" map-to="def:statement"/>
<style id="st-statement-executable" _name="Executable statement" map-to="def:statement"/>
<style id="st-statement-option" _name="Statement option" map-to="form:statement-option"/>
</styles>
<definitions>
<!--
In many codes it is common to use separators like ***** or *===== etc.
-->
<context id="separator-comment" style-ref="st-separator-comment">
<match>(^\*{2,}\s*$|^\*\-{2,}\s*$|^\*\_{2,}\s*$|^\*\={2,}\s*$)</match>
</context>
<!--
The folds, cf. Section 3.34 (#include) of the FORM manual
-->
<context id="fold-comment" style-ref="st-fold-comment">
<match>^\*\-\-\#[\[;\]].*$</match>
</context>
<!--
There are actually no intrinsic magic comment words in FORM, but a TODO is
quite convenient for many purposes.
-->
<context id="magic-comment" style-ref="st-magic-comment">
<keyword>TODO</keyword>
</context>
<!--
Comments that start with an asterisk (except for the folds).
Asterisk is the default commentary charcter in FORM, cf.
Chapter 17 of the FORM manual. AFAIK there are no other
popular choices that are used in practice
-->
<context id="line-comment" style-ref="st-line-comment" end-at-line-end="true" class="comment">
<start>(^\*)</start>
<include>
<context ref="def:in-comment"/>
<context ref="magic-comment"/>
</include>
</context>
<!--
Boolean operators, cf. Section 3.31 (#if) of the FORM manual.
This covers >=, <=, !=, &&, ||, ==, < and >
-->
<context id="boolean" style-ref="st-boolean" extend-parent="false">
<match extended="true">
(
<\= |
>\= |
\!\= |
\=\= |
\s&&\s |
\s\|\|\s |
[<>]
)
</match>
</context>
<!--
This covers ->, :, =, +, -, *, ^, %, |, &, !, ? and different variations of the triple dot opreator
-->
<context id="operator" style-ref="st-operator">
<match extended="true">
(
[\+\-]\.\.\.[\+\-] |
\*\.\.\.\* |
\/\.\.\.\/ |
\,\.\.\.\, |
\:\.\.\.\: |
\-> |
[\:\=\+\-\*\/^\%\|&\!\?]
)
</match>
</context>
<!--
Integers and floats
-->
<context id="numeric" style-ref="st-numeric">
<match extended="true">
(\b([0-9]*\.?[0-9]+)\b)
</match>
</context>
<!--
Dollar variables, cf. Chapter 6 of the FORM manual
-->
<context id="dollar-variable" style-ref="st-dollar-variable" class="no-spell-check">
<match extended="true">
(\$[_a-zA-Z][_a-zA-Z0-9]*)
</match>
</context>
<!--
User-defined preprocessor variables, cf. Chapter 3.1 of the FORM manual
-->
<context id="preprocessor-variable" style-ref="st-preprocessor-variable" class="string no-spell-check">
<start>`</start>
<end>'</end>
<include>
<!--
Built in preprocessor variables, cf. Chapter 3.1 of the FORM manual
-->
<context style-ref="st-builtin-preprocessor-variable">
<match extended="true" case-sensitive="false">
(
activeexprnames |
cmodule |
date |
extrasymbols |
numactiveexprs |
oldnumextrasymbols |
optimmaxvar |
optimminvar |
optimscheme |
optimvalue |
pid |
random |
showiput |
stopwatch |
subversion |
time |
timer |
tolower |
toupper |
version
)\_
</match>
</context>
</include>
</context>
<!--
Strings
-->
<context id="string" style-ref="st-string" end-at-line-end="true" class="string no-spell-check">
<start>"</start>
<end>"</end>
<include>
<context ref="preprocessor-variable"/>
<context id="escaped-character" style-ref="st-escaped-character">
<match extended="true">\\([\\\"\'nrbtf])</match>
</context>
</include>
</context>
<!--
The built in sets, cf. Chapter 2.6 of the FORM manual.
Here for convenience we also include explicit dummy indices
of the type Nxyz
-->
<context id="set" style-ref="st-set" class="no-spell-check">
<match extended="true" case-sensitive="false">
(
pos |
pos0 |
neg |
neg0 |
even |
odd |
int |
symbol |
fixed |
index |
number |
dummyindices |
vector |
N[0-9]+
)\_
</match>
</context>
<!--
====================================================================================================
=========================================== PREPROCESSOR ===========================================
====================================================================================================
-->
<!--
The setup parameters, cf. Chapter 17 of the FORM manual.
-->
<context id="preprocessor-setup-parameter" style-ref="st-preprocessor-setup-parameter" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*\#:\s+)\%[(
bracketindexsize |
commentchar |
compresssize |
constindex |
continuationlines |
define |
dotchar |
factorizationcache |
filepatches |
functionlevels |
hidesize |
incdir |
indentspace |
insidefirst |
largepatches |
largesize |
maxnumbersize |
maxtermsize |
maxwildcards |
nospacesinnumbers |
numstorecaches |
nwritefinalstatistics |
nwriteprocessstatistics |
nwritestatistics |
nwritethreadstatistics |
oldfactarg |
oldgcd |
oldorder |
oldparallelstatistics |
parentheses |
path |
procedureextension |
processbucketsize |
resettimeonclear |
scratchsize |
shmwinsize |
sizestorecache |
smallextension |
smallsize |
sortiosize |
sorttype |
spectatorsize |
subfilepatches |
sublargepatches |
sublargesize |
subsmallextension |
subsmallsize |
subsortiosize |
subtermsinsmall |
tempdir |
tempsortdir |
termsinsmall |
threadbucketsize |
threadloadbalancing |
threads |
threadscratchoutsize |
threadscratchsize |
threadsortfilesynch |
totalsize |
workspace |
wtimestats
)\%]
</match>
</context>
<!--
The preprocessor statements, cf. Chapter 3 of the FORM manual.
-->
<context id="preprocessor-statement" style-ref="st-preprocessor-statement" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*\#)\%[(
add |
addseparator |
append |
appendpath |
assign |
break |
breakdo |
call |
case |
clearoptimize |
close |
closedictionary |
commentchar |
create |
debug |
default |
define |
do |
else |
elseif |
enddo |
endif |
endinside |
endprocedure |
endswitch |
exchange |
external |
factdollar |
fromexternal |
if |
ifdef |
ifndef |
include |
inside |
message |
opendictionary |
optimize |
pipe |
preout |
prependpath |
printtimes |
procedure |
procedureextension |
prompt |
redefine |
remove |
reset |
reverseinclude |
rmexternal |
rmseparator |
setexternal |
setexternalattr |
setrandom |
show |
skipextrasymbols |
switch |
system |
terminate |
toexternal |
undefine |
usedictionary |
write
)\%]
</match>
</context>
<!--
====================================================================================================
=========================================== MODULES ================================================
====================================================================================================
-->
<!--
Modules: cf. Chapter 4 of the FORM Manual
-->
<context id="module" style-ref="st-module" end-at-line-end="true" class="no-spell-check">
<start extended="true">(^\s*\.)</start>
<include>
<context ref="numeric"/>
<context ref="string"/>
<context>
<match extended="true" case-sensitive="false">
\%[(
clear |
global |
end |
sort |
store
)\%]
</match>
</context>
</include>
</context>
<!--
====================================================================================================
======================================== FUNCTIONS ================================================
====================================================================================================
-->
<!--
The tensor functions: cf. Chapter 8 of the FORM manual
-->
<context id="function-tensor" style-ref="st-function-tensor" class="no-spell-check">
<match extended="true" case-sensitive="false">
(
d |
dd |
dummyten |
e |
g |
gi |
g5 |
g6 |
g7
)\_
</match>
</context>
<!--
The reserved functions: cf. Chapter 8 of the FORM manual
-->
<context id="function-reserved" style-ref="st-function-reserved" class="no-spell-check">
<match extended="true" case-sensitive="false">
(
acos |
acosh |
asin |
asinh |
atan |
atan2 |
atanh |
cos |
cosh |
li2 |
lin |
ln |
sin |
sinh |
sqrt |
tan |
tanh
)\_
</match>
</context>
<!--
The regular functions: cf. Chapter 8 of the FORM manual
-->
<context id="function-regular" style-ref="st-function-regular" class="no-spell-check">
<match extended="true" case-sensitive="false">
(
abs |
bernoulli |
binom |
conjg |
content |
count |
delta |
deltap |
denom |
distrib |
div |
dum |
dummy |
exp |
exteuclidean |
extrasymbol |
fac |
factorin |
farg |
firstbracket |
firstterm |
gcd |
id |
integer |
inverse |
invfac |
makerational |
match |
max |
maxpowerof |
min |
minpowerof |
mod |
mod2 |
mul |
nargs |
nterms |
numfactors |
partitions |
pattern |
perm |
prime |
putfirst |
random |
ranperm |
rem |
replace |
reverse |
root |
setfun |
sig |
sign |
sum |
sump |
table |
tbl |
term |
termsin |
termsinbracket |
theta |
thetap
)\_
</match>
</context>
<!--
====================================================================================================
======================================== STATEMENTS ================================================
====================================================================================================
-->
<!--
Declaration and definition statements, cf. Chapter 7 of the FORM manual.
Some common (longer) shortcuts like cfunction instead of cfunctions are also included.
Further shortcuts can be added upon request.
-->
<context id="statement-declaration" style-ref="st-statement-declaration" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*)\%[(
auto |
autodeclare |
cfunction |
cfunctions |
cleartable |
commuteinset |
commuting |
comp |
compress |
copyspectator |
createspectator |
ctable |
ctensor |
ctensors |
deallocatetable |
dim |
dimension |
extrasymbol |
fill |
fillexpression |
fixindex |
function |
functions |
funpowers |
gfactorized |
global |
globalfactorized |
indexes |
indices |
insidefirst |
lfactorized |
loa |
load |
local |
localfactorized |
metric |
modulus |
nfunction |
nfunctions |
ntable |
ntensor |
ntensors |
off |
on |
polyfun |
polyratfun |
processbucketsize |
propercount |
save |
set |
symbol |
symbols |
table |
tablebase |
tensor |
tensors |
threadbucketsize |
unittrace |
vector |
vectors
)\%]
</match>
</context>
<!--
Some statements can be abbreviated to just one or two characters.
Since here it is impossible to distinguish such abbreviations from
user-defined variables, we adopt the following rule: If the corresponding
word is no more than 3 spaces away from the beginning of the line, we
interpret it as an abbreviated statement. Otherwise it will
be treated as a user-defined variable.
The current shortcuts are for symbol, vector, index, nfunction, cfunction,
commuting, tensor, ntensor, ctensor, local, global, dimension, unittrace,
save and fixindex.
-->
<context id="statement-declaration-short" style-ref="st-statement-declaration" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s{0,3})\%[(
s |
v |
i |
f |
nf |
cf |
co |
t |
nt |
ct |
l |
g |
d |
u |
sa |
fi
)\%]\s+
</match>
</context>
<!--
This is an ugly hack for the auto and autodeclare statements. Unfortunately,
this positive look-behind is quite expensive, so that we cannot allow an arbitrary
number of spaces auto or autodeclare and the variable type.
-->
<define-regex id="statement-declaration-special-regex" extended="true" case-sensitive="false">
\%[(s|v|i|f|nf|cf|co|t|nt|ct|symbol|vector|index|
indices|function|function|nfunction|nfunctions|cfunction|cfunctions|commuting|tensor|
tensors|ntensor|ntensors|ctensor|ctensors)\%]
</define-regex>
<context id="statement-declaration-special" style-ref="st-statement-declaration" class="no-spell-check">
<match extended="true" case-sensitive="false">
(
((?<=(\b(auto)\b\s))\%{statement-declaration-special-regex}) |
((?<=(\b(auto)\b\s{2}))\%{statement-declaration-special-regex}) |
((?<=(\b(auto)\b\s{3}))\%{statement-declaration-special-regex}) |
((?<=(\b(auto)\b\s{4}))\%{statement-declaration-special-regex}) |
((?<=(\b(autodeclare)\b\s))\%{statement-declaration-special-regex}) |
((?<=(\b(autodeclare)\b\s{2}))\%{statement-declaration-special-regex}) |
((?<=(\b(autodeclare)\b\s{3}))\%{statement-declaration-special-regex}) |
((?<=(\b(autodeclare)\b\s{4}))\%{statement-declaration-special-regex})
)
</match>
</context>
<!--
Specification statements: cf. Chapter 8 of the FORM manual.
-->
<context id="statement-specification" style-ref="st-statement-specification" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*)\%[(
collect |
delete |
drop |
hide |
inparallel |
intohide |
keep |
ndrop |
nhide |
notinparallel |
nskip |
nunhide |
pophide |
pushhide |
skip |
unhide
)\%]
</match>
</context>
<!--
Control statements: cf. Chapter 8 of the FORM manual.
-->
<context id="statement-control" style-ref="st-statement-control" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*)\%[(
abracket |
abrackets |
antibracket |
antiabrackets |
antib |
bracket |
brackets |
factorize |
format |
moduleoption |
nfactorize |
nprint |
nunfactorize |
print |
print\[\] |
printtable |
unfactorize
)\%]
</match>
</context>
<!--
Some statements can be abbreviated to just one or two characters.
Since here it is impossible to distinguish such abbreviations from
user-defined variables, we adopt the following rule: If the corresponding
word is no more than 3 spaces away from the beginning of the line, we
interpret it as an abbreviated statement. Otherwise it will
be treated as a user-defined variable.
The current shortcuts are for antibrackets, brackets, format and nprint.
-->
<context id="statement-control-short" style-ref="st-statement-control" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s{0,3})\%[(
a |
ab |
b |
fo |
np
)\%]
</match>
</context>
<!--
Executable statements: cf. Chapter 8 of the FORM manual.
-->
<context id="statement-executable" style-ref="st-statement-executable" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s*)\%[(
also |
antiputinside |
antisymm |
antisymmetrize |
apply |
aputinside |
argexplode |
argimplode |
argtoextrasymbol |
argument |
assign |
chainin |
chainout |
chisholm |
contract |
cyclesymmetrize |
denominators |
dis |
discard |
disorder |
do |
dropcoefficient |
dropsymbols |
else |
elseif |
emptyspectator |
endargument |
enddo |
endif |
endinexpression |
endinside |
endrepeat |
endterm |
endwhile |
exit |
extrasymbols |
factarg |
factdollar |
frompolynomial |
goto |
id |
identify |
iden |
ident |
idn |
idnew |
ido |
idold |
if |
ifmatch |
ifnomatch |
ifnotmatch |
inexpression |
inside |
label |
makeinteger |
many |
merge |
mul |
multi |
multibracket |
multiply |
normalize |
nwrite |
once |
only |
putinside |
ratio |
rcyclesymmetrize |
redefine |
removespectator |
renumber |
repeat |
replaceloop |
select |
setexitflag |
shuffle |
sort |
splitarg |
splitfirstarg |
splitlastarg |
stuffle |
sum |
symm |
symmetrize |
term |
testuse |
topolynomial |
tospectator |
totensor |
tovector |
trace4 |
tracen |
transform |
tryreplace |
unfactorize |
while |
write
)\%]
</match>
</context>
<!--
Some statements can be abbreviated to just one or two characters.
Since here it is impossible to distinguish such abbreviations from
user-defined variables, we adopt the following rule: If the corresponding
word is no more than 3 spaces away from the beginning of the line, we
interpret it as an abbreviated statement. Otherwise it will
be treated as a user-defined variable.
The current shortcuts are for antisymmetrize, multiply, cyclesymmetrize,
goto, nwrite, rcyclesymmetrize, redefine and write.
-->
<context id="statement-executable-short" style-ref="st-statement-executable" class="no-spell-check">
<match extended="true" case-sensitive="false">
(^\s{0,3})\%[(
an |
cy |
go |
la |
mu |
nw |
rc |
r |
w
)\%]
</match>
</context>
<!--
Options for some of the statements: cf. Chapter 8 of the FORM manual.
-->
<context id="statement-option" style-ref="st-statement-option" class="no-spell-check">
<match extended="true" case-sensitive="false">
\%[(
O0 |
O1 |
O2 |
O3 |
O4 |
addargs |
all |
alln |
allnames |
allnormalize |
allwarnings |
alsodollars |
alsofunctions |
alsopowers |
antisymm |
antisymmetric |
arguments |
array |
brackets |
check |
checkpoint |
codes |
coefficientsonly |
compress |
contract |
count |
cycle |
cyclesymm |
cyclesymmetric |
decode |
dedup |
disorder |
doublefortran |
dropargs |
encode |
expression |
fewerstatistics |
fewerstats |
finalstats |
findloop |
flag |
float |
fortran |
fortran90 |
gzip |
highfirst |
id |
ifmatch |
ifnomatch |
include |
indentspace |
innertest |
inparallel |
insidefirst |
inversetable |
islyndon |
left |
local |