diff options
| -rw-r--r-- | Changes.textile | 1 | ||||
| -rw-r--r-- | lib/coderay/helpers/file_type.rb | 1 | ||||
| -rw-r--r-- | lib/coderay/scanners/go.rb | 209 | ||||
| -rw-r--r-- | lib/coderay/styles/alpha.rb | 2 |
4 files changed, 212 insertions, 1 deletions
diff --git a/Changes.textile b/Changes.textile index 7ea4bfe..58427aa 100644 --- a/Changes.textile +++ b/Changes.textile @@ -6,6 +6,7 @@ h2. Changes in 1.1 * New scanner: Lua [#21, #22, thanks to Quintus] * New scanner: Sass [#93] +* New scanner: Go [#28, thanks to Eric Guo and Nathan Youngman] * New scanner: Taskpaper [#39, thanks to shimomura] * Diff scanner: Highlight inline changes in multi-line changes [#99] * JavaScript scanner: Highlight multi-line comments in diff correctly diff --git a/lib/coderay/helpers/file_type.rb b/lib/coderay/helpers/file_type.rb index a0f9fd6..5e3a1e7 100644 --- a/lib/coderay/helpers/file_type.rb +++ b/lib/coderay/helpers/file_type.rb @@ -86,6 +86,7 @@ module CodeRay 'dpr' => :delphi, 'erb' => :erb, 'gemspec' => :ruby, + 'go' => :go, 'groovy' => :groovy, 'gvy' => :groovy, 'h' => :c, diff --git a/lib/coderay/scanners/go.rb b/lib/coderay/scanners/go.rb new file mode 100644 index 0000000..59473f6 --- /dev/null +++ b/lib/coderay/scanners/go.rb @@ -0,0 +1,209 @@ +module CodeRay +module Scanners + + # Scanner for Go, copy from c + class Go < Scanner + + register_for :go + file_extension 'go' + + # http://golang.org/ref/spec#Keywords + KEYWORDS = [ + 'break', 'default', 'func', 'interface', 'select', + 'case', 'defer', 'go', 'map', 'struct', + 'chan', 'else', 'goto', 'package', 'switch', + 'const', 'fallthrough', 'if', 'range', 'type', + 'continue', 'for', 'import', 'return', 'var', + ] # :nodoc: + + # http://golang.org/ref/spec#Types + PREDEFINED_TYPES = [ + 'bool', + 'uint8', 'uint16', 'uint32', 'uint64', + 'int8', 'int16', 'int32', 'int64', + 'float32', 'float64', + 'complex64', 'complex128', + 'byte', 'rune', 'string', 'error', + 'uint', 'int', 'uintptr', + ] # :nodoc: + + PREDEFINED_CONSTANTS = [ + 'nil', 'iota', + 'true', 'false', + ] # :nodoc: + + PREDEFINED_FUNCTIONS = %w[ + append cap close complex copy delete imag len + make new panic print println real recover + ] # :nodoc: + + IDENT_KIND = WordList.new(:ident). + add(KEYWORDS, :keyword). + add(PREDEFINED_TYPES, :predefined_type). + add(PREDEFINED_CONSTANTS, :predefined_constant). + add(PREDEFINED_FUNCTIONS, :predefined) # :nodoc: + + ESCAPE = / [rbfntv\n\\'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} /x # :nodoc: + UNICODE_ESCAPE = / u[a-fA-F0-9]{4} | U[a-fA-F0-9]{8} /x # :nodoc: + + protected + + def scan_tokens encoder, options + + state = :initial + label_expected = true + case_expected = false + label_expected_before_preproc_line = nil + in_preproc_line = false + + until eos? + + case state + + when :initial + + if match = scan(/ \s+ | \\\n /x) + if in_preproc_line && match != "\\\n" && match.index(?\n) + in_preproc_line = false + case_expected = false + label_expected = label_expected_before_preproc_line + end + encoder.text_token match, :space + + elsif match = scan(%r! // [^\n\\]* (?: \\. [^\n\\]* )* | /\* (?: .*? \*/ | .* ) !mx) + encoder.text_token match, :comment + + elsif match = scan(/ <?- (?![\d.]) | [+*=<>?:;,!&^|()\[\]{}~%]+ | \/=? | \.(?!\d) /x) + if case_expected + label_expected = true if match == ':' + case_expected = false + end + encoder.text_token match, :operator + + elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x) + kind = IDENT_KIND[match] + if kind == :ident && label_expected && !in_preproc_line && scan(/:(?!:)/) + kind = :label + label_expected = false + match << matched + else + label_expected = false + if kind == :keyword + case match + when 'case', 'default' + case_expected = true + end + end + end + encoder.text_token match, kind + + elsif match = scan(/L?"/) + encoder.begin_group :string + if match[0] == ?L + encoder.text_token 'L', :modifier + match = '"' + end + encoder.text_token match, :delimiter + state = :string + + elsif match = scan(/ ` ([^`]+)? (`)? /x) + encoder.begin_group :shell + encoder.text_token '`', :delimiter + encoder.text_token self[1], :content if self[1] + encoder.text_token self[2], :delimiter if self[2] + encoder.end_group :shell + + elsif match = scan(/ \# \s* if \s* 0 /x) + match << scan_until(/ ^\# (?:elif|else|endif) .*? $ | \z /xm) unless eos? + encoder.text_token match, :comment + + elsif match = scan(/#[ \t]*(\w*)/) + encoder.text_token match, :preprocessor + in_preproc_line = true + label_expected_before_preproc_line = label_expected + state = :include_expected if self[1] == 'include' + + elsif match = scan(/ L?' (?: [^\'\n\\] | \\ (?: #{ESCAPE} | #{UNICODE_ESCAPE} ) )? '? /ox) + label_expected = false + encoder.text_token match, :char + + elsif match = scan(/\$/) + encoder.text_token match, :ident + + elsif match = scan(/-?\d*(\.\d*)?([eE][+-]?\d+)?i/) + label_expected = false + encoder.text_token match, :imaginary + + elsif match = scan(/-?0[xX][0-9A-Fa-f]+/) + label_expected = false + encoder.text_token match, :hex + + elsif match = scan(/-?(?:0[0-7]+)(?![89.eEfF])/) + label_expected = false + encoder.text_token match, :octal + + elsif match = scan(/-?(?:\d*\.\d+|\d+\.)(?:[eE][+-]?\d+)?|\d+[eE][+-]?\d+/) + label_expected = false + encoder.text_token match, :float + + elsif match = scan(/-?(?:\d+)(?![.eEfF])L?L?/) + label_expected = false + encoder.text_token match, :integer + + else + encoder.text_token getch, :error + + end + + when :string + if match = scan(/[^\\\n"]+/) + encoder.text_token match, :content + elsif match = scan(/"/) + encoder.text_token match, :delimiter + encoder.end_group :string + state = :initial + label_expected = false + elsif match = scan(/ \\ (?: #{ESCAPE} | #{UNICODE_ESCAPE} ) /mox) + encoder.text_token match, :char + elsif match = scan(/ \\ /x) + encoder.text_token match, :error + elsif match = scan(/$/) + encoder.end_group :string + state = :initial + label_expected = false + else + raise_inspect "else case \" reached; %p not handled." % peek(1), encoder + end + + when :include_expected + if match = scan(/<[^>\n]+>?|"[^"\n\\]*(?:\\.[^"\n\\]*)*"?/) + encoder.text_token match, :include + state = :initial + + elsif match = scan(/\s+/) + encoder.text_token match, :space + state = :initial if match.index ?\n + + else + state = :initial + + end + + else + raise_inspect 'Unknown state', encoder + + end + + end + + if state == :string + encoder.end_group :string + end + + encoder + end + + end + +end +end diff --git a/lib/coderay/styles/alpha.rb b/lib/coderay/styles/alpha.rb index ff85ecc..f4e9d7d 100644 --- a/lib/coderay/styles/alpha.rb +++ b/lib/coderay/styles/alpha.rb @@ -107,7 +107,7 @@ table.CodeRay td { padding: 2px 4px; vertical-align: top; } .operator { } .predefined { color:#369; font-weight:bold } .predefined-constant { color:#069 } -.predefined-type { color:#0a5; font-weight:bold } +.predefined-type { color:#0a8; font-weight:bold } .preprocessor { color:#579 } .pseudo-class { color:#00C; font-weight:bold } .regexp { background-color:hsla(300,100%,50%,0.06); } |