SCSS: new parser based on @Roy-Orbison's work

Close universal-ctags#801. This is derrived from https://gist.github.com/Roy-Orbison/71bc81f488f85adaeacfb76a7967eda0. Some modifications are done to align the kind and the behavior of this parser to our css parser. Noteworthy changes from the original version: * The name of kind for "identifier" is changed to "id", * The pseudo kind is removed, (my comments at universal-ctags#801) * The parameter kind is added and * The parser captures variables defined at @for ... and @each ... TODO: * table optimizations, and * adding scope for parameters
smr1113 · Sep 11, 2019 · e1f9334 · e1f9334
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diff --git a/Units/parser-scss.r/function.d/args.ctags b/Units/parser-scss.r/function.d/args.ctags
@@ -0,0 +1 @@
+--sort=no
diff --git a/Units/parser-scss.r/function.d/expected.tags b/Units/parser-scss.r/function.d/expected.tags
@@ -0,0 +1,10 @@
+remove-where	input.scss	/^@function remove-where($list, $condition) {$/;"	f
+list	input.scss	/^@function remove-where($list, $condition) {$/;"	z
+condition	input.scss	/^@function remove-where($list, $condition) {$/;"	z
+new-list	input.scss	/^  $new-list: ();$/;"	v
+separator	input.scss	/^  $separator: list-separator($list);$/;"	v
+element	input.scss	/^  @each $element in $list {$/;"	v
+new-list	input.scss	/^      $new-list: append($new-list, $element, $separator: $separator);$/;"	v
+fonts	input.scss	/^$fonts: Tahoma, Geneva, "Helvetica Neue", Helvetica, Arial, sans-serif;$/;"	v
+contains-helvetica	input.scss	/^  @function contains-helvetica($string) {$/;"	f
+string	input.scss	/^  @function contains-helvetica($string) {$/;"	z
diff --git a/Units/parser-scss.r/function.d/input.scss b/Units/parser-scss.r/function.d/input.scss
@@ -0,0 +1,22 @@
+// Taken from https://sass-lang.com/documentation/values/functions
+/// Return a copy of $list with all elements for which $condition returns `true`
+/// removed.
+@function remove-where($list, $condition) {
+  $new-list: ();
+  $separator: list-separator($list);
+  @each $element in $list {
+    @if not call($condition, $element) {
+      $new-list: append($new-list, $element, $separator: $separator);
+    }
+  }
+  @return $new-list;
+}
+
+$fonts: Tahoma, Geneva, "Helvetica Neue", Helvetica, Arial, sans-serif;
+
+content {
+  @function contains-helvetica($string) {
+    @return str-index($string, "Helvetica");
+  }
+  font-family: remove-where($fonts, get-function("contains-helvetica"));
+}
diff --git a/Units/parser-scss.r/mixin.d/args.ctags b/Units/parser-scss.r/mixin.d/args.ctags
@@ -0,0 +1 @@
+--sort=no
diff --git a/Units/parser-scss.r/mixin.d/expected.tags b/Units/parser-scss.r/mixin.d/expected.tags
@@ -0,0 +1,2 @@
+reset-list	input.scss	/^@mixin reset-list {$/;"	m
+horizontal-list	input.scss	/^@mixin horizontal-list {$/;"	m
diff --git a/Units/parser-scss.r/mixin.d/input.scss b/Units/parser-scss.r/mixin.d/input.scss
@@ -0,0 +1,22 @@
+// Taken from https://sass-lang.com/documentation/at-rules/mixin
+@mixin reset-list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+@mixin horizontal-list {
+  @include reset-list;
+
+  li {
+    display: inline-block;
+    margin: {
+      left: -2px;
+      right: 2em;
+    }
+  }
+}
+
+nav ul {
+  @include horizontal-list;
+}
diff --git a/Units/parser-scss.r/placeholder.d/args.ctags b/Units/parser-scss.r/placeholder.d/args.ctags
@@ -0,0 +1 @@
+--sort=no
diff --git a/Units/parser-scss.r/placeholder.d/expected.tags b/Units/parser-scss.r/placeholder.d/expected.tags
@@ -0,0 +1,6 @@
+.alert:hover	input.scss	/^.alert:hover, %strong-alert {$/;"	c
+%strong-alert	input.scss	/^.alert:hover, %strong-alert {$/;"	P
+%strong-alert:hover	input.scss	/^%strong-alert:hover {$/;"	P
+%toolbelt	input.scss	/^%toolbelt {$/;"	P
+.action-buttons	input.scss	/^.action-buttons {$/;"	c
+.reset-buttons	input.scss	/^.reset-buttons {$/;"	c
diff --git a/Units/parser-scss.r/placeholder.d/input.scss b/Units/parser-scss.r/placeholder.d/input.scss
@@ -0,0 +1,26 @@
+.alert:hover, %strong-alert {
+  font-weight: bold;
+}
+
+%strong-alert:hover {
+  color: red;
+}
+
+%toolbelt {
+  box-sizing: border-box;
+  border-top: 1px rgba(#000, .12) solid;
+  padding: 16px 0;
+  width: 100%;
+
+  &:hover { border: 2px rgba(#000, .5) solid; }
+}
+
+.action-buttons {
+  @extend %toolbelt;
+  color: #4285f4;
+}
+
+.reset-buttons {
+  @extend %toolbelt;
+  color: #cddc39;
+}
diff --git a/Units/parser-scss.r/selectors.d/args.ctags b/Units/parser-scss.r/selectors.d/args.ctags
@@ -0,0 +1 @@
+--sort=no
diff --git a/Units/parser-scss.r/selectors.d/expected.tags b/Units/parser-scss.r/selectors.d/expected.tags
@@ -0,0 +1,5 @@
+.alert	input.scss	/^.alert, .warning {$/;"	c
+.warning	input.scss	/^.alert, .warning {$/;"	c
+.modal-open	input.scss	/^.modal-open {$/;"	c
+.modal	input.scss	/^  .modal {$/;"	c
+foo	input.scss	/^  #foo {$/;"	i
diff --git a/Units/parser-scss.r/selectors.d/input.scss b/Units/parser-scss.r/selectors.d/input.scss
@@ -0,0 +1,23 @@
+/* Taken from https://sass-lang.com/documentation/style-rules */
+.alert, .warning {
+  ul, p {
+    margin-right: 0;
+    margin-left: 0;
+    padding-bottom: 0;
+  }
+}
+
+/* Taken from _bodal.scss of bootstrap */
+.modal-open {
+  // Kill the scroll on the body
+  overflow: hidden;
+
+  .modal {
+    overflow-x: hidden;
+    overflow-y: auto;
+  }
+
+  #foo {
+      color: red;
+  }
+}
diff --git a/Units/parser-scss.r/variable.d/args.ctags b/Units/parser-scss.r/variable.d/args.ctags
@@ -0,0 +1 @@
+--sort=no
diff --git a/Units/parser-scss.r/variable.d/expected.tags b/Units/parser-scss.r/variable.d/expected.tags
@@ -0,0 +1,7 @@
+base-color	input.scss	/^$base-color: #c6538c;$/;"	v
+border-dark	input.scss	/^$border-dark: rgba($base-color, 0.88);$/;"	v
+.alert	input.scss	/^.alert {$/;"	c
+i	input.scss	/^@for $i from 1 through 3 {$/;"	v
+sizes	input.scss	/^$sizes: 40px, 50px, 80px;$/;"	v
+size	input.scss	/^@each $size in $sizes {$/;"	v
+.icon-	input.scss	/^  .icon-#{$size} {$/;"	c
diff --git a/Units/parser-scss.r/variable.d/input.scss b/Units/parser-scss.r/variable.d/input.scss
@@ -0,0 +1,25 @@
+// Taken from https://sass-lang.com/documentation/variables
+$base-color: #c6538c;
+$border-dark: rgba($base-color, 0.88);
+
+.alert {
+  border: 1px solid $border-dark;
+}
+
+// Taken from https://sass-lang.com/documentation/at-rules/control/for
+@for $i from 1 through 3 {
+  ul:nth-child(3n + #{$i}) {
+    background-color: lighten($base-color, $i * 5%);
+  }
+}
+
+// Taken from https://sass-lang.com/documentation/at-rules/control/each
+$sizes: 40px, 50px, 80px;
+
+@each $size in $sizes {
+  .icon-#{$size} {
+    font-size: $size;
+    height: $size;
+    width: $size;
+  }
+}
diff --git a/docs/news.rst b/docs/news.rst
@@ -87,6 +87,7 @@ The following parsers have been added:
 * RpmSpec
 * RSpec *optlib*
 * Rust
+* SCSS *optlib*
 * SystemdUnit
 * SystemTap *optlib*
 * SystemVerilog

diff --git a/main/parsers_p.h b/main/parsers_p.h
@@ -124,6 +124,7 @@
 	RubyParser, \
 	RustParser, \
 	SchemeParser, \
+	SCSSParser, \
 	ShParser, \
 	SlangParser, \
 	SmlParser, \

diff --git a/makefiles/optlib2c_input.mak b/makefiles/optlib2c_input.mak
@@ -13,6 +13,7 @@ OPTLIB2C_INPUT = \
 	optlib/pod.ctags			\
 	optlib/qemuhx.ctags			\
 	optlib/puppetManifest.ctags		\
+	optlib/scss.ctags			\
 	optlib/systemtap.ctags			\
 	\
 	$(NULL)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		reset-list input.scss /^@mixin reset-list {$/;" m
		horizontal-list input.scss /^@mixin horizontal-list {$/;" m