164 lines
6.6 KiB
Ruby
164 lines
6.6 KiB
Ruby
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# -*- coding: utf-8 -*- #
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# frozen_string_literal: true
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module Rouge
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module Lexers
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class Verilog < RegexLexer
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title "Verilog and System Verilog"
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desc "The System Verilog hardware description language"
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tag 'verilog'
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filenames '*.v', '*.sv', '*.svh'
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mimetypes 'text/x-verilog', 'text/x-systemverilog'
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id = /[a-zA-Z_][a-zA-Z0-9_]*/
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def self.keywords
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@keywords ||= Set.new %w(
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alias always always_comb always_ff always_latch assert assert_strobe
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assign assume automatic attribute before begin bind bins binsof break
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case casex casez clocking config constraint context continue cover
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covergroup coverpoint cross deassign defparam default design dist do
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else end endattribute endcase endclass endclocking endconfig
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endfunction endgenerate endgroup endinterface endmodule endpackage
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endprimitive endprogram endproperty endspecify endsequence endtable
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endtask expect export extends extern final first_match for force
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foreach fork forkjoin forever function generate genvar if iff ifnone
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ignore_bins illegal_bins import incdir include initial inside instance
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interface intersect join join_any join_none liblist library local
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localparam matches module modport new noshowcancelled null package
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parameter primitive priority program property protected
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pulsestyle_onevent pulsestyle_ondetect pure rand randc randcase
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randsequence release return sequence showcancelled solve specify super
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table task this throughout timeprecision timeunit type typedef unique
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use wait wait_order while wildcard with within
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)
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end
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def self.keywords_type
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@keywords_type ||= Set.new %w(
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and bit buf bufif0 bufif1 byte cell chandle class cmos const disable
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edge enum event highz0 highz1 initial inout input int integer join
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logic longint macromodule medium nand negedge nmos nor not
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notif0 notif1 or output packed parameter pmos posedge pull0 pull1
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pulldown pullup rcmos real realtime ref reg repeat rnmos rpmos rtran
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rtranif0 rtranif1 scalared shortint shortreal signed specparam
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static string strength strong0 strong1 struct supply0 supply1 tagged
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time tran tranif0 tranif1 tri tri0 tri1 triand trior trireg union
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unsigned uwire var vectored virtual void wait wand weak[01] wire wor
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xnor xor
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)
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end
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def self.keywords_system_task
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@keyword_system_task ||= Set.new %w(
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acos acosh asin asinh assertfailoff assertfailon assertkill
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assertnonvacuouson assertoff asserton assertpassoff assertpasson
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assertvacuousoff atan atan2 atanh bits bitstoreal bitstoshortreal
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cast ceil changed changed_gclk changing_gclk clog2 cos cosh countones
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coverage_control coverage_get coverage_get_max coverage_merge
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coverage_save dimensions display displayb displayh displayo
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dist_chi_square dist_erlang dist_exponential dist_normal dist_poisson
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dist_t dist_uniform dumpall dumpfile dumpflush dumplimit dumpoff
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dumpon dumpports dumpportsall dumpportsflush dumpportslimit
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dumpportsoff dumpportson dumpvars error exit exp falling_gclk fclose
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fdisplay fdisplayb fdisplayh fdisplayo fell fell_gclk feof ferror
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fflush fgetc fgets finish floor fmonitor fmonitorb fmonitorh fmonitoro
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fopen fread fscanf fseek fstrobe fstrobeb fstrobeh fstrobeo ftell
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future_gclk fwrite fwriteb fwriteh fwriteo get_coverage high hypot
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increment info isunbounded isunknown itor left ln load_coverage_db
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log10 low monitor monitorb monitorh monitoro monitoroff monitoron
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onehot onehot0 past past_gclk pow printtimescale q_add q_exam q_full
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q_initialize q_remove random readmemb readmemh realtime realtobits
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rewind right rising_gclk rose rose_gclk rtoi sampled
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set_coverage_db_name sformat sformatf shortrealtobits signed sin sinh
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size sqrt sscanf stable stable_gclk steady_gclk stime stop strobe
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strobeb strobeh strobeo swrite swriteb swriteh swriteo system tan tanh
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time timeformat typename ungetc unpacked_dimensions unsigned warning
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write writeb writeh writememb writememh writeo
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)
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end
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state :expr_bol do
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mixin :inline_whitespace
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rule %r/`define/, Comment::Preproc, :macro
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rule(//) { pop! }
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end
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# :expr_bol is the same as :bol but without labels, since
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# labels can only appear at the beginning of a statement.
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state :bol do
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rule %r/#{id}:(?!:)/, Name::Label
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mixin :expr_bol
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end
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state :inline_whitespace do
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rule %r/[ \t\r]+/, Text
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rule %r/\\\n/, Text # line continuation
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rule %r(/(\\\n)?[*].*?[*](\\\n)?/)m, Comment::Multiline
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end
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state :whitespace do
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rule %r/\n+/m, Text, :bol
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rule %r(//(\\.|.)*?\n), Comment::Single, :bol
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mixin :inline_whitespace
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end
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state :expr_whitespace do
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rule %r/\n+/m, Text, :expr_bol
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mixin :whitespace
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end
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state :string do
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rule %r/"/, Str, :pop!
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rule %r/\\([\\abfnrtv"']|x[a-fA-F0-9]{2,4}|[0-7]{1,3})/, Str::Escape
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rule %r/[^\\"\n]+/, Str
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rule %r/\\\n/, Str
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rule %r/\\/, Str # stray backslash
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end
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state :statement do
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mixin :whitespace
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rule %r/L?"/, Str, :string
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rule %r/([0-9_]+\.[0-9_]*|[0-9_]*\.[0-9_]+)(e[+-]?[0-9_]+)?/i, Num::Float
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rule %r/[0-9_]+e[+-]?[0-9_]+/i, Num::Float
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rule %r/[0-9]*'h[0-9a-fA-F_?]+/, Num::Hex
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rule %r/[0-9]*'b?[01xz_?]+/, Num::Bin
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rule %r/[0-9]*'d[0-9_?]+/, Num::Integer
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rule %r/[0-9_]+[lu]*/i, Num::Integer
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rule %r([-~!%^&*+=\|?:<>/@{}]), Operator
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rule %r/[()\[\],.$\#;]/, Punctuation
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rule %r/`(\w+)/, Comment::Preproc
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rule id do |m|
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name = m[0]
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if self.class.keywords.include? name
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token Keyword
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elsif self.class.keywords_type.include? name
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token Keyword::Type
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elsif self.class.keywords_system_task.include? name
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token Name::Builtin
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else
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token Name
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end
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end
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end
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state :root do
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mixin :expr_whitespace
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rule(//) { push :statement }
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end
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state :macro do
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rule %r/\n/, Comment::Preproc, :pop!
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mixin :inline_whitespace
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rule %r/;/, Punctuation
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rule %r/\=/, Operator
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rule %r/(\w+)/, Text
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end
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end
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end
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end
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