Add OpenSCAD support, closes #702

syntax/openscad.vim

@@ -0,0 +1,93 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'openscad', 'syntax/openscad.vim')
+  finish
+endif
+
+" Vim syntax file
+" Language:     OpenSCAD
+" Maintainer:   Sirtaj Singh Kang <sirtaj-vim@sirtaj.net>
+" Last Changed: 2013 March 05
+
+if version < 600
+    syntax clear
+elseif exists("b:current_syntax")
+    finish
+endif
+
+
+"syn keyword openscadFunctionDef function
+syn keyword openscadFunctionDef function nextgroup=openscadFunction skipwhite skipempty
+syn match openscadFunction /\<\h\w*\>/ contained display
+
+"syn keyword openscadModuleDef module
+syn keyword openscadModuleDef module nextgroup=openscadModule skipwhite skipempty
+syn match openscadModule /\<\h\w*\>/ contained display
+
+syn keyword openscadStatement echo assign let assert
+syn keyword openscadConditional if else
+syn keyword openscadRepeat for intersection_for
+syn keyword openscadInclude include use
+syn keyword openscadCsgKeyword union difference intersection render intersection_for
+syn keyword openscadTransform scale rotate translate mirror multmatrix color minkowski hull projection linear_extrude rotate_extrude offset
+syn keyword openscadPrimitiveSolid cube sphere cylinder polyhedron surface
+syn keyword openscadPrimitive2D square circle polygon import_dxf text
+syn keyword openscadPrimitiveImport import child children
+
+syn match openscadSpecialVariable "\$[a-zA-Z]\+\>" display
+syn match openscadModifier "^\s*[\*\!\#\%]" display
+
+syn match openscadNumbers "\<\d\|\.\d" contains=openscadNumber display transparent
+syn match openscadNumber "\d\+" display contained 
+syn match openscadNumber "\.\d\+" display contained 
+
+syn region openscadString start=/"/ skip=/\\"/ end=/"/
+
+syn keyword openscadBoolean true false
+
+syn keyword openscadCommentTodo TODO FIXME XXX contained display
+syn match openscadInlineComment ://.*$: contains=openscadCommentTodo
+syn region openscadBlockComment start=:/\*: end=:\*/: fold contains=openscadCommentTodo
+
+syn region openscadBlock start="{" end="}" transparent fold
+syn region openscadVector start="\[" end="\]" transparent fold
+
+syn keyword openscadBuiltin abs acos asin atan atan2 ceil cos exp floor ln log
+syn keyword openscadBuiltin lookup max min pow rands round sign sin sqrt tan
+syn keyword openscadBuiltin str len search version version_num concat chr
+syn keyword openscadBuiltin dxf_cross dxf_dim
+
+hi def link openscadFunctionDef			Structure
+hi def link openscadFunction			Function
+hi def link openscadModuleDef			Structure
+hi def link openscadModule			    Function
+hi def link openscadBlockComment		Comment
+hi def link openscadBoolean			    Boolean
+hi def link openscadBuiltin			    Function
+hi def link openscadConditional			Conditional
+hi def link openscadCsgKeyword			Structure
+hi def link openscadInclude			    Include
+hi def link openscadInlineComment	    Comment
+hi def link openscadModifier			Special
+hi def link openscadStatement			Statement
+hi def link openscadNumbers			    Number
+hi def link openscadNumber			    Number
+hi def link openscadPrimitiveSolid		Keyword
+hi def link openscadPrimitive2D 		Keyword
+hi def link openscadPrimitiveImport 	Keyword
+hi def link openscadRepeat			    Repeat
+hi def link openscadSpecialVariable		Special
+hi def link openscadString			    String
+hi def link openscadTransform			Statement
+hi def link openscadCommentTodo			Todo
+
+" Blatantly stolen from vim74\syntax\c.vim
+"when wanted, highlight trailing white space
+if exists("openscad_space_errors")
+  if !exists("openscad_no_trail_space_error")
+    syn match	openscadSpaceError	display excludenl "\s\+$"
+  endif
+  if !exists("openscad_no_tab_space_error")
+    syn match	openscadSpaceError	display " \+\t"me=e-1
+  endif
+endif
+
+let b:current_syntax = "openscad"