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-- mod-version:3
-- Refrence: https://ring-lang.github.io/doc1.21.2/syntaxflexibility.html
local syntax = require "core.syntax"
-- Keywords
local keywords = {
"enablehashcomments", "disablehashcomments", "call", "class", "from", "get", "give",
"import", "load", "new", "package", "private", "changeringkeyword", "changeringoperator",
"loadsyntax", "endclass", "endpackage", "if", "but", "else", "elseif", "ok", "for",
"foreach", "to", "next", "catch", "step", "endfor", "while", "other", "end", "do",
"endwhile", "endswitch", "endtry", "try", "break", "bye", "continue", "default",
"endfunc", "endfunction", "return", "switch", "case", "on", "off", "again", "exit",
"loop", "done", "in", "func", "def", "nl"
}
-- Types using ring type hints library
local types = {
"char", "unsigned", "signed", "int", "short", "long", "float", "double", "void",
"byte", "boolean", "string", "list", "number", "object", "public", "static",
"abstract", "protected", "override"
}
-- Special values
local literals = {
"true", "false", "null"
}
-- Built-in functions
local builtin_functions = {
"see", "put", "print"
}
local symbols = {}
for _, keyword in ipairs(keywords) do
symbols[keyword:upper()] = "keyword"
symbols[keyword:gsub("^%l", string.upper)] = "keyword"
symbols[keyword] = "keyword"
end
for _, type in ipairs(types) do
symbols[type:upper()] = "keyword2"
symbols[type:gsub("^%l", string.upper)] = "keyword2"
symbols[type] = "keyword2"
end
for _, literal in ipairs(literals) do
symbols[literal:upper()] = "literal"
symbols[literal:gsub("^%l", string.upper)] = "literal"
symbols[literal] = "literal"
end
for _, func in ipairs(builtin_functions) do
symbols[func:upper()] = "function"
symbols[func:gsub("^%l", string.upper)] = "function"
symbols[func] = "function"
end
local string_syntax = {
patterns = {
{ pattern = {"%#{", "}", "\\"}, type="keyword", syntax = ".ring" },
{ pattern = "[^#\"`']+", type = "string"},
{ pattern = "[#\"`']", type = "string"}
},
symbols = {}
}
syntax.add {
name = "Ring",
files = { "%.ring$", "%.rh$", "%.rform$" },
comment = "//",
patterns = {
{ pattern = "#.*", type = "comment" },
{ pattern = "//.*", type = "comment" },
{ pattern = { "/%*", "%*/" }, type = "comment" },
{ pattern = { '"', '"', '\\' }, type = "string", syntax = string_syntax },
{ pattern = { "'", "'", '\\' }, type = "string", syntax = string_syntax },
{ pattern = { "`", "`", '\\' }, type = "string", syntax = string_syntax },
{ pattern = "-?%d+[%d%.]*f?", type = "number" },
{ pattern = "-?0x%x+", type = "number" },
{ pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
{ pattern = "[%a_][%w_]*%f[(]", type = "function" },
{ pattern = "[Dd][Ee][Ff]()%s+()[%a_][%w_]*", type = { "keyword", "normal", "function" } },
{ pattern = "[Ff][Uu][Nn][Cc]()%s+()[%a_][%w_]*", type = { "keyword", "normal", "function" } },
{ pattern = "[Cc][Ll][Aa][Ss][Ss]()%s+()[%a_][%w_]*", type = { "keyword", "normal", "function" } },
{ pattern = "[%a_][%w_]*", type = "symbol" },
{ pattern = "%?", type = "keyword" },
{ pattern = ":[%a_][%w_]*", type = "literal" },
},
symbols = symbols
}
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