Adding Smithy Lexer

lib/rouge/demos/smithy

@@ -0,0 +1,16 @@
+$version: "2"
+namespace example.weather
+
+service Weather {
+    version: "2006-03-01"
+    resources: [City]
+    operations: [GetCurrentTime]
+}
+
+resource City {
+    identifiers: { cityId: CityId }
+    read: GetCity
+    list: ListCities
+    resources: [Forecast]
+}
+

lib/rouge/lexers/smithy.rb

@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*- #
+# frozen_string_literal: true
+
+module Rouge
+  module Lexers
+    class Smithy < RegexLexer
+      tag 'smithy'
+      filenames '*.smithy'
+
+      title 'Smithy'
+      desc 'Smithy is a language for defining services and SDKs (https://smithy.io).'
+
+      state :whitespace do
+        rule %r/\s+/, Text::Whitespace
+      end
+
+      state :key do
+        rule %r/\w+\:/, Name::Attribute
+      end
+
+      state :comment do
+        rule %r/\/\/.*/, Comment::Single
+      end
+
+      state :annotation do
+        rule %r/@\w+([.#]\w+)*/, Name::Decorator
+      end
+
+      state :simple_string do
+        rule %r/"/, Str::Double, :string
+      end
+
+      state :root do
+        mixin :whitespace
+        mixin :comment
+        mixin :annotation
+
+        rule %r/^\$version:/, Keyword::Reserved
+        rule %r/^\w+/, Keyword::Reserved
+        mixin :simple_string
+
+        rule %r/\(/, Punctuation, :arguments
+        rule %r/\[/, Punctuation, :array
+        rule %r/\{/, Punctuation, :object
+
+        rule %r/\w+([.#]\w+)*/, Name::Class
+      end
+
+      state :arguments do
+        rule %r/"\w+(\.\w+)*":/, Name::Attribute
+        mixin :whitespace
+        mixin :simple_string
+
+        rule %r/,/, Punctuation
+
+        rule %r/(true|false)/, Keyword::Constant
+        rule %r/\d+(\.\d+)?/, Num
+        rule %r/\[/, Punctuation, :array
+        rule %r/\{/, Punctuation, :object
+        rule %r/\w+:/, Name::Attribute
+        rule %r/\)/, Punctuation, :pop!
+      end
+
+      state :value do
+        mixin :whitespace
+        mixin :comment
+        mixin :annotation
+
+        rule %r/:/, Punctuation
+
+        rule %r/\$\w+/, Name::Label
+        mixin :simple_string
+        rule %r/\[/, Punctuation, :array
+        rule %r/\{/, Punctuation, :object
+        rule %r/\w+:/, Name::Attribute
+        rule %r/(\w+)(\s)(:=)/ do
+          groups Name::Attribute, Text::Whitespace, Punctuation
+        end
+        rule %r/[\w.#]+/, Name::Entity
+
+      end
+
+      state :string do
+        rule %r/[^"]/, Str::Double
+        rule %r/"/, Str::Double, :pop!
+      end
+
+
+      state :array do
+        mixin :whitespace
+        mixin :value
+        mixin :key
+
+
+        rule %r/,/, Punctuation
+        rule %r/\]/, Punctuation, :pop!
+      end
+
+      state :object do
+        mixin :annotation
+        rule %r/\(/, Punctuation, :arguments
+        rule %r/:=/, Punctuation
+        rule %r/\=/, Punctuation
+        mixin :whitespace
+        mixin :value
+        mixin :key
+
+
+        rule %r/\}/, Punctuation, :pop!
+        rule %r/,/, Punctuation
+      end
+    end
+  end
+end

spec/lexers/smithy_spec.rb

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*- #
+# frozen_string_literal: true
+
+describe Rouge::Lexers::Smithy do
+    let(:subject) { Rouge::Lexers::Smithy.new }
+
+    describe 'guessing' do
+      include Support::Guessing
+
+      it 'guesses by filename' do
+        assert_guess :filename => 'foo.smithy'
+      end
+
+    end
+
+    describe 'lexing' do
+      include Support::Lexing
+
+      it 'recognizes annotation with dots and hashes' do
+        assert_tokens_equal '@aws.apigateway#integration', ['Name.Decorator', '@aws.apigateway#integration']
+      end
+    end
+  end
+

spec/visual/samples/smithy

@@ -0,0 +1,15 @@
+$version: "2"
+namespace example.weather
+
+service Weather {
+    version: "2006-03-01"
+    resources: [City]
+    operations: [GetCurrentTime]
+}
+
+resource City {
+    identifiers: { cityId: CityId }
+    read: GetCity
+    list: ListCities
+    resources: [Forecast]
+}