Adding support for the OpenSCAD language

runtime/plugins/comment/comment.lua

@@ -37,6 +37,7 @@ ft["nginx"] = "# %s"
 ft["nim"] = "# %s"
 ft["objc"] = "// %s"
 ft["ocaml"] = "(* %s *)"
+ft["openscad"] = "// %s"
 ft["pascal"] = "{ %s }"
 ft["perl"] = "# %s"
 ft["php"] = "// %s"

runtime/syntax/openscad.yaml

@@ -0,0 +1,80 @@
+filetype: openscad
+
+# OpenSCAD is a functional programming language used for representing
+# 2D/3D models for use in the program of the same name.
+#
+# The following documents were used as reference material:
+# https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language
+# https://openscad.org/cheatsheet/index.html
+
+detect:
+    filename: "\\.scad$"
+
+rules:
+    # Keywords (statements, functions, and special OpenSCAD terms)
+    - statement: "\\b(abs|acos|asin|assert|atan|atan2|ceil|child|children|chr|color|concat|cos|cross|cube|cylinder|difference|dxf_cross|dxf_dim|each|echo|else|exp|floor|for|function|hull|if|import|import_dxf|intersection|intersection_for|is_bool|is_function|is_list|is_num|is_string|is_undef|len|let|linear_extrude|ln|log|lookup|max|min|minkowski|mirror|module|multmatrix|norm|offset|ord|parent_module|polygon|polyhedron|pow|projection|rands|render|resize|rotate|rotate_extrude|round|scale|search|sign|sin|sphere|sqrt|square|str|surface|tan|text|translate|union|version|version_num)\\b"
+
+    - statement: "\\b(module|function|include|use|let|for|if|else)\\b"
+    - statement: "\\b(child|each|assign)\\b"
+    - statement: "\\b(intersection_for|import|export)\\b"
+
+    # Functions (OpenSCAD built-in functions)
+    - function: "\\b(circle|square|polygon|cube|sphere|cylinder|polyhedron|translate|rotate|scale|resize|mirror|multmatrix|color|offset|minkowski|hull|projection|surface|render|linear_extrude|rotate_extrude|dxf_linear_extrude|dxf_rotate_extrude)\\b"
+
+    # Constants (numbers, booleans, and other predefined constants)
+    - constant: "\\b(pi|undef|true|false)\\b"
+    - constant.number: "\\b[-+]?[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)?|PI|inf|nan\\b"
+    - constant.bool: "\\b(true|false)\\b"
+
+    # Identifiers (specific variable names, special variables, and built-in OpenSCAD variables)
+    - identifier: "\\b(\\$fn|\\$fa|\\$fs|\\$t|\\$children)\\b"
+    - identifier: "\\b(x|y|z)\\b"
+    - identifier: "\\b(dx|dy|dz|angle|center|height|radius|diameter|r1|r2|h1|h2|points|paths|convexity|size|thickness|anchor)\\b"
+
+    # Symbols (operators, punctuation, and brackets)
+    - symbol: "(\\*|//|/|%|\\+|-|\\^|>|>=|<|<=|!=|==|=|[\\.]{2}|!|&&|\\|\\|)"
+    - symbol.brackets: "[(){}\\[\\]]"
+
+    # Special symbols that alter subtree interpretation (modifiers)
+    - special: "[#%!*]"
+
+    # Special variables (beginning with a dollar sign)
+    - special: "\\B\\$[a-z]+\\b"
+
+    # Preprocessor directives (include and use)
+    - preproc:
+        start: "^ *(use|include) <"
+        end: ">;?"
+
+    # Constants for strings and special characters
+    - constant.string:
+        start: "\""
+        end: "\""
+        skip: "\\\\."
+        rules:
+            - constant.specialChar: "\\\\([abfnrtvz\\'\"]|[0-9]{1,3}|x[0-9a-fA-F][0-9a-fA-F]|u\\{[0-9a-fA-F]+\\})"
+    - constant.string:
+        start: "'"
+        end: "'"
+        skip: "\\\\."
+        rules:
+            - constant.specialChar: "\\\\([abfnrtvz\\'\"]|[0-9]{1,3}|x[0-9a-fA-F][0-9a-fA-F]|u\\{[0-9a-fA-F]+\\})"
+
+    # Comments (single-line and block comments)
+    - comment.block:
+        start: "\\/\\*"
+        end: "\\*\\/"
+        rules:
+            - todo: "(TODO|NOTE|FIXME):?"
+
+    - comment:
+        start: "\\/\\/|\\#"
+        end: "$"
+        rules:
+            - todo: "(TODO|NOTE|FIXME):?"
+
+    # Handle undefined variables and constants
+    - constant: "\\b(undef)\\b"
+
+    # Special handling of numbers (hexadecimal, floating point, etc.)
+    - constant.number: "\\b((0[xX](([0-9A-Fa-f]+\\.[0-9A-Fa-f]*)|(\\.?[0-9A-Fa-f]+))([pP][-+]?[0-9]+)?)|((([0-9]+\\.[0-9]*)|(\\.?[0-9]+))([eE][-+]?[0-9]+)?))"