" Vim syntax file " Language: Fortran 2023 (and Fortran 2018, 2008, 2003, 95, 90, and 77) " Version: (v110) 2024 January 03 " Maintainers: Ajit J. Thakkar ; " Joshua Hollett " Usage: For instructions, do :help fortran-syntax from Vim " Credits: " Version 0.1 for Fortran 95 was created in April 2000 by Ajit Thakkar from an " older Fortran 77 syntax file by Mario Eusebio and Preben Guldberg. " Since then, useful suggestions and contributions have been made, in order, by: " Andrej Panjkov, Bram Moolenaar, Thomas Olsen, Michael Sternberg, Christian Reile, " Walter Dieudonne, Alexander Wagner, Roman Bertle, Charles Rendleman, " Andrew Griffiths, Joe Krahn, Hendrik Merx, Matt Thompson, Jan Hermann, " Stefano Zaghi, Vishnu V. Krishnan, Judicael Grasset, Takuma Yoshida, " Eisuke Kawashima, Andre Chalella, Fritz Reese, Karl D. Hammond, " and Michele Esposito Marzino. if exists("b:current_syntax") finish endif let s:cpo_save = &cpo set cpo&vim " Choose between fixed and free source form if this hasn't been done yet if !exists("b:fortran_fixed_source") if exists("fortran_free_source") " User guarantees free source form for all fortran files let b:fortran_fixed_source = 0 elseif exists("fortran_fixed_source") " User guarantees fixed source form for all fortran files let b:fortran_fixed_source = 1 elseif expand("%:e") =~? '^f\%(90\|95\|03\|08\)$' " Free-form file extension defaults as in Intel ifort, gcc(gfortran), NAG, Pathscale, and Cray compilers let b:fortran_fixed_source = 0 elseif expand("%:e") =~? '^\%(f\|f77\|for\)$' " Fixed-form file extension defaults let b:fortran_fixed_source = 1 else " Modern fortran compilers still allow both free and fixed source form. " Assume fixed source form unless signs of free source form " are detected in the first five columns of the first s:lmax lines. " Detection becomes more accurate and time-consuming if more lines " are checked. Increase the limit below if you keep lots of comments at " the very top of each file and you have a fast computer. let s:lmax = 500 if ( s:lmax > line("$") ) let s:lmax = line("$") endif let b:fortran_fixed_source = 1 let s:ln=1 while s:ln <= s:lmax let s:test = strpart(getline(s:ln),0,5) if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t' let b:fortran_fixed_source = 0 break endif let s:ln = s:ln + 1 endwhile unlet! s:lmax s:ln s:test endif endif syn case ignore if b:fortran_fixed_source == 1 syn match fortranConstructName "^\s\{6,}\zs\a\w*\ze\s*:" else syn match fortranConstructName "^\s*\zs\a\w*\ze\s*:" endif syn match fortranConstructName "\%(\" syn match fortranConstructName "\%(\" syn match fortranConstructName "\%(\" syn match fortranUnitName "\%(\<\%(end\s*\)\?\%(subroutine\|function\|module\|program\|submodule\)\s\+\)\@12<=\a\w\+" syn match fortranUnitHeader "\\ze\s*\%(!.*\)\?$" syn keyword fortranIntrinsic abs acos aimag aint anint asin atan atan2 char cmplx conjg cos cosh exp ichar index int log log10 max min nint sign sin sinh sqrt tan tanh syn keyword fortranIntrinsicR achar iachar transfer dble dprod dim lge lgt lle llt mod syn keyword fortranIntrinsic command_argument_count get_command get_command_argument get_environment_variable is_iostat_end is_iostat_eor move_alloc new_line same_type_as extends_type_of syn keyword fortranIntrinsic selected_real_kind selected_int_kind selected_logical_kind selected_char_kind syn keyword fortranIntrinsic acosh asinh atanh bessel_j0 bessel_j1 bessel_jn bessel_y0 bessel_y1 bessel_yn erf erfc erfc_scaled gamma log_gamma hypot norm2 syn keyword fortranIntrinsic adjustl adjustr all allocated any associated bit_size btest ceiling cshift date_and_time digits syn keyword fortranIntrinsic dot_product eoshift exponent floor fraction iand ibclr ibits ibset ieor ior ishft ishftc lbound len_trim matmul maxexponent maxloc merge minexponent minloc syn keyword fortranIntrinsic modulo mvbits nearest pack precision present radix random_number random_seed range repeat reshape rrspacing scale scan set_exponent shape size spacing "syn keyword fortranIntrinsic count epsilon maxval minval product sum huge tiny " intrinsic names often used for variables in older Fortran code syn match fortranIntrinsic '\<\%(count\|epsilon\|maxval\|minval\|product\|sum\|huge\|tiny\)\>\ze\s*(' syn keyword fortranIntrinsic spread system_clock transpose trim ubound unpack verify syn keyword fortranIntrinsic atomic_define atomic_ref execute_command_line leadz trailz storage_size merge_bits syn keyword fortranIntrinsic bge bgt ble blt dshiftl dshiftr findloc iall iany iparity image_index lcobound ucobound maskl maskr num_images parity popcnt poppar shifta shiftl shiftr this_image syn keyword fortranIntrinsic null cpu_time failed_images stopped_images image_status co_broadcast co_max co_min co_sum co_reduce syn keyword fortranIntrinsic atomic_add atomic_and atomic_or atomic_xor atomic_fetch_add atomic_fetch_and atomic_fetch_or atomic_fetch_xor atomic_cas syn keyword fortranIntrinsic ieee_arithmetic ieee_support_underflow_control ieee_get_underflow_mode ieee_set_underflow_mode syn keyword fortranIntrinsic ieee_max ieee_max_mag ieee_min ieee_min_mag split tokenize ieee_support_subnormal ieee_get_modes ieee_set_modes syn keyword fortranIntrinsic ieee_set_status ieee_get_rounding_mode ieee_set_rounding_mode syn keyword fortranIntrinsic iso_c_binding c_loc c_funloc c_sizeof c_associated c_f_pointer c_f_procpointer syn keyword fortranIntrinsic out_of_range reduce random_init coshape syn keyword fortranIntrinsic acosd asind atand atan2d cosd sind tand acospi asinpi atanpi atan2pi cospi sinpi tanpi syn keyword fortranIntrinsic compiler_options compiler_version get_team team_number syn match fortranIntrinsic "\" syn match fortranType "^\s*\zsimplicit\s\+none\>" syn match fortranType "\<\%(class\|type\)\%(of\)\?\>" syn match fortranType "\<\%(end\s*\)\?interface\>" syn match fortranType "\" syn match fortranType "\<\%(end\s*\)\?enumeration\s\+type" syn match fortranType "\<\%(end\s*\)\?\%(module\s\+\)\?procedure\>" syn match fortranTypeR display "\" syn match fortranTypeR display "\" syn keyword fortranAttribute value bind deferred contiguous intrinsic non_intrinsic syn keyword fortranAttribute asynchronous nopass non_overridable pass volatile extends syn keyword fortranAttribute abstract external private public protected intent optional syn keyword fortranAttribute pointer target allocatable dimension codimension sequence parameter save syn keyword fortranUnitHeader result operator assignment syn match fortranUnitHeader "\<\%(end\s*\)\?\%(subroutine\|function\|module\|program\|submodule\)\>" syn match fortranBlock "\<\%(end\s*\)\?\%(block\|critical\|associate\)\>" syn match fortranCalled "\<\%(call\s\+\)\@7<=\a\w*" syn match fortranRepeat "\" syn keyword fortranRepeat concurrent syn keyword fortranRepeatR while syn match fortranRepeat "\" syn keyword fortranRepeatOb forall syn match fortranRepeatOb "\" syn keyword fortranTodo contained bug note debug todo fixme "Catch errors caused by too many right parentheses syn region fortranParen transparent start="(" end=")" contains=ALLBUT,fortranParenError,@fortranCommentGroup,cIncluded,@spell syn match fortranParenError ")" syn match fortranOperator "\.\s*n\=eqv\s*\." syn match fortranOperator "\.\s*\%(and\|or\|not\)\s*\." syn match fortranOperator "\%(+\|-\|/\|\*\)" syn match fortranOperator "\%(\%(>\|<\)=\=\|==\|/=\|=\)" syn match fortranOperator "\%(%\|?\|=>\)" syn match fortranOperator "\%([\|]\)" syn match fortranOperatorR "\.\s*[gl][et]\s*\." syn match fortranOperatorR "\.\s*\%(eq\|ne\)\s*\." syn keyword fortranReadWrite print flush syn match fortranReadWrite '\<\%(backspace\|close\|endfile\|inquire\|open\|read\|rewind\|write\)\ze\s*(' "If tabs are allowed then the left margin checks do not work if exists("fortran_have_tabs") syn match fortranTab "\t" transparent else syn match fortranTab "\t" endif "Numbers of various sorts " Integers syn match fortranNumber display "\<\d\+\%(_\a\w*\)\=\>" " floating point number, without a decimal point syn match fortranFloatIll display "\<\d\+[deq][-+]\=\d\+\%(_\a\w*\)\=\>" " floating point number, starting with a decimal point syn match fortranFloatIll display "\.\d\+\%([deq][-+]\=\d\+\)\=\%(_\a\w*\)\=\>" " floating point number, no digits after decimal syn match fortranFloatIll display "\<\d\+\.\%([deq][-+]\=\d\+\)\=\%(_\a\w*\)\=\>" " floating point number, D or Q exponents syn match fortranFloatIll display "\<\d\+\.\d\+\%([dq][-+]\=\d\+\)\=\%(_\a\w*\)\=\>" " floating point number syn match fortranFloat display "\<\d\+\.\d\+\%(e[-+]\=\d\+\)\=\%(_\a\w*\)\=\>" " binary number syn match fortranBinary display "b["'][01]\+["']" " octal number syn match fortranOctal display "o["'][0-7]\+["']" " hexadecimal number syn match fortranHex display "z["'][0-9A-F]\+["']" " Numbers in formats syn match fortranFormatSpec display "\d*f\d\+\.\d\+" syn match fortranFormatSpec display "\d*e[sn]\=\d\+\.\d\+\%(e\d+\>\)\=" syn match fortranFormatSpec display "\d*\%(d\|q\|g\)\d\+\.\d\+\%(e\d+\)\=" syn match fortranFormatSpec display "\d\+x\>" " The next match cannot be used because it would pick up identifiers as well " syn match fortranFormatSpec display "\<\%(a\|i\)\d\+" " Numbers as labels syn match fortranLabelNumber display "^\zs\d\{1,5}\ze\s" syn match fortranLabelNumber display "^ \zs\d\{1,4}\ze\s" syn match fortranLabelNumber display "^ \zs\d\{1,3}\ze\s" syn match fortranLabelNumber display "^ \zs\d\d\=\ze\s" syn match fortranLabelNumber display "^ \zs\d\ze\s" " Numbers as targets syn match fortranTarget display "\%(\" syn match fortranTarget display "\%(\" syn match fortranTarget display "\%(\" syn match fortranBoolean "\.\s*\%(true\|false\)\s*\." syn keyword fortranKeyword call syn keyword fortranKeyword use only contains syn match fortranKeyword "\" syn match fortranKeyword "\<\%(error\s\+\)\=stop\>" syn keyword fortranKeyword continue syn match fortranKeyword "\" syn match fortranKeywordDel "\" syn match fortranConditional "\" syn match fortranConditional "\<\%(end\s*\)\?\%(if\|where\|select\)\>" syn match fortranConditional "\" syn match fortranConditional "\<\%(class\|type\)\s\+is\>" syn match fortranConditional "\<\%(case\|rank\)\%(\s\+default\)\?\>" syn match fortranConditionalDel "\" syn match fortranImageControl "\<\%(change\|form\|end\)\s\+team\>" syn match fortranImageControl "\" syn keyword fortranStorageClass in out syn match fortranStorageClass "\" syn match fortranStorageClass "\\%(\s\+\a\w*\s*/\)\@=" syn match fortranStorageClassOb "^\s*\zscommon\>" syn match fortranStorageClassOb "^\s*\zscommon\>\%(\s*/\)\@=" syn keyword fortranStorageClassOb equivalence syn keyword fortranConstant c_null_char c_alert c_backspace c_form_feed c_new_line c_carriage_return c_horizontal_tab c_vertical_tab syn keyword fortranConstant c_int c_short c_long c_long_long c_signed_char c_size_t c_int8_t c_int16_t c_int32_t c_int64_t c_int_least8_t c_int_least16_t c_int_least32_t c_int_least64_t c_int_fast8_t c_int_fast16_t c_int_fast32_t c_int_fast64_t c_intmax_t C_intptr_t c_float c_double c_long_double c_float_complex c_double_complex c_long_double_complex c_bool c_char c_null_ptr c_null_funptr syn keyword fortranConstant iso_fortran_env character_storage_size error_unit file_storage_size input_unit iostat_end iostat_eor numeric_storage_size output_unit stat_failed_image stat_unlocked_failed_image syn keyword fortranConstant int8 int16 int32 int64 real16 real32 real64 real128 character_kinds integer_kinds logical_kinds real_kinds iostat_inquire_internal_unit syn keyword fortranConstant ieee_negative_subnormal ieee_positive_subnormal " CUDA fortran if exists("fortran_CUDA") syn match fortranTypeCUDA "\" syn keyword fortranTypeCUDA host global device syn keyword fortranTypeCUDA shared constant pinned texture syn keyword fortranTypeCUDA dim1 dim2 dim3 dim4 syn keyword fortranTypeCUDA cudadeviceprop cuda_count_kind cuda_stream_kind syn keyword fortranTypeCUDA cudaEvent cudaFuncAttributes cudaArrayPtr syn keyword fortranTypeCUDA cudaSymbol cudaChannelFormatDesc cudaPitchedPtr syn keyword fortranTypeCUDA cudaExtent cudaMemcpy3DParms syn keyword fortranTypeCUDA cudaFuncCachePreferNone cudaFuncCachePreferShared syn keyword fortranTypeCUDA cudaFuncCachePreferL1 cudaLimitStackSize syn keyword fortranTypeCUDA cudaLimitPrintfSize cudaLimitMallocHeapSize syn keyword fortranTypeCUDA cudaSharedMemBankSizeDefault cudaSharedMemBankSizeFourByte cudaSharedMemBankSizeEightByte syn keyword fortranTypeCUDA cudaEventDefault cudaEventBlockingSync cudaEventDisableTiming syn keyword fortranTypeCUDA cudaMemcpyHostToDevice cudaMemcpyDeviceToHost syn keyword fortranTypeCUDA cudaMemcpyDeviceToDevice syn keyword fortranTypeCUDA cudaErrorNotReady cudaSuccess cudaErrorInvalidValue syn keyword fortranTypeCUDA c_devptr syn match fortranStringCUDA "\" syn match fortranStringCUDA "\" syn match fortranStringCUDA "\" syn match fortranStringCUDA "\" syn keyword fortranIntrinsicCUDA warpsize syncthreads syncthreads_and syncthreads_count syncthreads_or threadfence threadfence_block threadfence_system gpu_time allthreads anythread ballot syn keyword fortranIntrinsicCUDA atomicadd atomicsub atomicmax atomicmin atomicand atomicor atomicxor atomicexch atomicinc atomicdec atomiccas sizeof __shfl __shfl_up __shfl_down __shfl_xor syn keyword fortranIntrinsicCUDA cudaChooseDevice cudaDeviceGetCacheConfig cudaDeviceGetLimit cudaDeviceGetSharedMemConfig cudaDeviceReset cudaDeviceSetCacheConfig cudaDeviceSetLimit cudaDeviceSetSharedMemConfig cudaDeviceSynchronize cudaGetDevice cudaGetDeviceCount cudaGetDeviceProperties cudaSetDevice cudaSetDeviceFlags cudaSetValidDevices syn keyword fortranIntrinsicCUDA cudaThreadExit cudaThreadSynchronize cudaGetLastError cudaGetErrorString cudaPeekAtLastError cudaStreamCreate cudaStreamDestroy cudaStreamQuery cudaStreamSynchronize cudaStreamWaitEvent cudaEventCreate cudaEventCreateWithFlags cudaEventDestroy cudaEventElapsedTime cudaEventQuery cudaEventRecord cudaEventSynchronize syn keyword fortranIntrinsicCUDA cudaFuncGetAttributes cudaFuncSetCacheConfig cudaFuncSetSharedMemConfig cudaSetDoubleForDevice cudaSetDoubleForHost cudaFree cudaFreeArray cudaFreeHost cudaGetSymbolAddress cudaGetSymbolSize syn keyword fortranIntrinsicCUDA cudaHostAlloc cudaHostGetDevicePointer cudaHostGetFlags cudaHostRegister cudaHostUnregister cudaMalloc cudaMallocArray cudaMallocHost cudaMallocPitch cudaMalloc3D cudaMalloc3DArray syn keyword fortranIntrinsicCUDA cudaMemcpy cudaMemcpyArraytoArray cudaMemcpyAsync cudaMemcpyFromArray cudaMemcpyFromSymbol cudaMemcpyFromSymbolAsync cudaMemcpyPeer cudaMemcpyPeerAsync cudaMemcpyToArray cudaMemcpyToSymbol cudaMemcpyToSymbolAsync cudaMemcpy2D cudaMemcpy2DArrayToArray cudaMemcpy2DAsync cudaMemcpy2DFromArray cudaMemcpy2DToArray cudaMemcpy3D cudaMemcpy3DAsync syn keyword fortranIntrinsicCUDA cudaMemGetInfo cudaMemset cudaMemset2D cudaMemset3D cudaDeviceCanAccessPeer cudaDeviceDisablePeerAccess cudaDeviceEnablePeerAccess cudaPointerGetAttributes cudaDriverGetVersion cudaRuntimeGetVersion endif syn region none matchgroup=fortranType start="<<<" end=">>>" contains=ALLBUT,none syn cluster fortranCommentGroup contains=fortranTodo if (b:fortran_fixed_source == 1) if !exists("fortran_have_tabs") if exists("fortran_extended_line_length") " Vendor extensions allow lines with a text width of 132 syn match fortranSerialNumber excludenl "^.\{133,}$"lc=132 else " Standard requires fixed format to have a text width of 72, " but all current compilers use 80 instead syn match fortranSerialNumber excludenl "^.\{81,}$"lc=80 endif "Flag left margin errors syn match fortranLabelError "^.\{-,4}[^0-9 ]" contains=fortranTab syn match fortranLabelError "^.\{4}\d\S" endif syn match fortranComment excludenl "^[!c*].*$" contains=@fortranCommentGroup,@spell syn match fortranLeftMargin transparent "^ \{5}" syn match fortranContinueMark display "^.\{5}\S"lc=5 else syn match fortranContinueMark display "&" endif syn match fortranComment excludenl "!.*$" contains=@fortranCommentGroup,@spell syn match fortranOpenMP excludenl "^\s*\zs!\$\%(OMP\)\=&\=\s.*$" syn match fortranEndStatement display ";" "cpp is often used with Fortran syn match cPreProc "^\s*#\s*\%(define\|ifdef\)\>.*" syn match cPreProc "^\s*#\s*\%(elif\|if\)\>.*" syn match cPreProc "^\s*#\s*\%(ifndef\|undef\)\>.*" syn match cPreCondit "^\s*#\s*\%(else\|endif\)\>.*" syn region cIncluded contained start=+"[^("]+ skip=+\\\\\|\\"+ end=+"+ contains=fortranLeftMargin,fortranContinueMark,fortranSerialNumber "syn region cIncluded contained start=+"[^("]+ skip=+\\\\\|\\"+ end=+"+ syn match cIncluded contained "<[^>]*>" syn match cInclude "^\s*#\s*include\>\s*["<]" contains=cIncluded "Synchronising limits assume that comment and continuation lines are not mixed if exists("fortran_fold") syn sync fromstart elseif (b:fortran_fixed_source == 0) syn sync linecont "&" minlines=30 else syn sync minlines=30 endif if exists("fortran_fold") if has("folding") setlocal foldmethod=syntax endif if (b:fortran_fixed_source == 1) syn region fortranProgram transparent fold keepend start="^\s*program\s\+\z(\a\w*\)" skip="^\%([!c*]\|\s*#\).*$" excludenl end="\\)\=\|$\)" contains=ALLBUT,fortranModule syn region fortranModule transparent fold keepend start="^\s*submodule\s\+(\a\w*\s*\%(:\a\w*\s*\)*)\s*\z\(\a\w*\)" skip="^\%([!c*]\|\s*#\).*$" excludenl end="\\)\=\|$\)" contains=ALLBUT,fortranProgram,fortranModule syn region fortranModule transparent fold keepend start="^\s*module\s\+\%(procedure\)\@!\z(\a\w*\)" skip="^\%([!c*]\|\s*#\).*$" excludenl end="\\)\=\|$\)" contains=ALLBUT,fortranProgram syn region fortranFunction transparent fold keepend extend start="^\s*\%(elemental \|pure \|impure \|module \|recursive \)\=\s*\%(\%(\%(real \|integer \|logical \|complex \|double \s*precision \)\s*\%((\%(\s*kind\s*=\)\=\s*\w\+\s*)\)\=\)\|type\s\+(\s*\w\+\s*) \|character \%((\%(\s*len\s*=\)\=\s*\d\+\s*)\|(\%(\s*kind\s*=\)\=\s*\w\+\s*)\)\=\)\=\s*function\s\+\z(\a\w*\)" skip="^\%([!c*]\|\s*#\).*$" excludenl end="\\)\=\)" contains=ALLBUT,fortranProgram,fortranModule syn region fortranSubroutine transparent fold keepend extend start="^\s*\%(elemental \|pure \|impure \|module \|recursive \)\=\s*subroutine\s\+\z(\a\w*\)" skip="^\%([!c*]\|\s*#\).*$" excludenl end="\\)\=\)" contains=ALLBUT,fortranProgram,fortranModule syn region fortranBlockData transparent fold keepend start="\" skip="^\s*[!#].*$" excludenl end="\" contains=ALLBUT,fortranProgram,fortranModule,fortranSubroutine,fortranFunction,fortran77Loop,fortranCase,fortran90Loop,fortranIfBlock syn region fortranAssociate transparent fold keepend start="^\s*\