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-- mod-version:3
local syntax = require "core.syntax"
-- integer suffix combinations as a regex
local isuf = [[(?:[lL][uU]|ll[uU]|LL[uU]|[uU][lL]\b|[uU]ll|[uU]LL|[uU]|[lL]\b|ll|LL)?]]
-- float suffix combinations as a Lua pattern / regex
local fsuf = "[fFlL]?"
-- number with digit separator as a regex non-capturing group
local digitsep = [[(?:\d[\d']*)]]
syntax.add {
name = "C",
files = { "%.c$" },
comment = "//",
block_comment = { "/*", "*/" },
symbol_pattern = "[%a_#][%w_]*",
symbol_non_word_chars = " \t\n/\\()\"':,.;<>~!@$%^&*|+=[]{}`?-",
patterns = {
{ pattern = "//.*", type = "comment" },
{ pattern = { "/%*", "%*/" }, type = "comment" },
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ regex = "0x[0-9a-fA-F][0-9a-fA-F']*"..isuf, type = "number" },
{ regex = "0()[0-7][0-7']*"..isuf, type = { "keyword", "number" } },
{ regex = digitsep.."\\.?"..digitsep.."?(?:[Ee][-+]?"..digitsep..")?"..fsuf, type = "number" },
{ regex = "\\."..digitsep.."(?:[Ee][-+]?"..digitsep..")?"..fsuf, type = "number" },
{ pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
{ pattern = "##", type = "operator" },
{ pattern = "struct%s()[%a_][%w_]*", type = {"keyword", "keyword2"} },
{ pattern = "enum%s()[%a_][%w_]*", type = {"keyword", "keyword2"} },
{ pattern = "union%s()[%a_][%w_]*", type = {"keyword", "keyword2"} },
-- static declarations
{ pattern = "static()%s+()inline",
type = { "keyword", "normal", "keyword" }
},
{ pattern = "static()%s+()const",
type = { "keyword", "normal", "keyword" }
},
{ pattern = "static()%s+()[%a_][%w_]*",
type = { "keyword", "normal", "literal" }
},
-- match single line type declarations (exclude keywords)
{ pattern = "^%s*_?%u[%u_][%u%d_]*%s*\n", -- skip uppercase constants
type = "number"
},
{ pattern = "^%s*()[%a_][%w_]*()%s*%*+()%s*\n", -- pointer
type = { "normal", "literal", "operator", "normal" }
},
{ pattern = "^%s*()[%a_][%w_]*()%s*\n", -- non-pointer
type = { "normal", "literal", "normal" }
},
-- match function type declarations (exclude keywords)
{ pattern = "[%a_][%w_]*()%*+()%s+()[%a_][%w_]*()%s*%f[%(]",
type = { "literal", "operator", "normal", "function", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()%*+()[%a_][%w_]*()%s*%f[%(]",
type = { "literal", "normal", "operator", "function", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()[%a_][%w_]*()%s*%f[%(]",
type = { "literal", "normal", "function", "normal" }
},
-- match variable type declarations
{ pattern = "[%a_][%w_]*()%*+()%s+()[%a_][%w_]*",
type = { "literal", "operator", "normal", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()%*+()[%a_][%w_]*",
type = { "literal", "normal", "operator", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()[%a_][%w_]*()%s*()[;,%[%)]",
type = { "literal", "normal", "normal", "normal", "normal" }
},
{ pattern = "^%s*()[%a_][%w_]*()%s+[%a_][%w_]*()%s*\n",
type = { "normal", "literal", "normal", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()[%a_][%w_]*()%s*()=",
type = { "literal", "normal", "normal", "normal", "operator" }
},
{ pattern = "[%a_][%w_]*()&()%s+()[%a_][%w_]*",
type = { "literal", "operator", "normal", "normal" }
},
{ pattern = "[%a_][%w_]*()%s+()&()[%a_][%w_]*",
type = { "literal", "normal", "operator", "normal" }
},
-- Uppercase constants of at least 2 chars in len
{ pattern = "_?%u[%u_][%u%d_]*%s*%f[%(]", -- when used as function
type = "number"
},
{ pattern = "_?%u[%u_][%u%d_]*%f[%s%+%*%-%.%)%]}%?%^%%=/<>~|&;:,!]",
type = "number"
},
-- Magic constants
{ pattern = "__[%u%l]+__", type = "number" },
-- all other functions (excludes keywords)
{ pattern = "[%a_][%w_]*()%s*%f[(]", type = {"function", "normal"} },
-- Macros
{ pattern = "^%s*#%s*define%s+()[%a_][%a%d_]*",
type = { "keyword", "symbol" }
},
{ pattern = "#%s*include%s()<.->", type = {"keyword", "string"} },
{ pattern = "%f[#]#%s*[%a_][%w_]*", type = "keyword" },
-- Everything else to make the tokenizer work properly
{ pattern = "[%a_][%w_]*", type = "symbol" },
},
symbols = {
["if"] = "keyword",
["then"] = "keyword",
["else"] = "keyword",
["elseif"] = "keyword",
["do"] = "keyword",
["while"] = "keyword",
["for"] = "keyword",
["break"] = "keyword",
["continue"] = "keyword",
["return"] = "keyword",
["goto"] = "keyword",
["typedef"] = "keyword",
["enum"] = "keyword",
["extern"] = "keyword",
["static"] = "keyword",
["volatile"] = "keyword",
["const"] = "keyword",
["inline"] = "keyword",
["switch"] = "keyword",
["case"] = "keyword",
["default"] = "keyword",
["auto"] = "keyword",
["struct"] = "keyword",
["union"] = "keyword",
["void"] = "keyword2",
["int"] = "keyword2",
["short"] = "keyword2",
["long"] = "keyword2",
["float"] = "keyword2",
["double"] = "keyword2",
["char"] = "keyword2",
["unsigned"] = "keyword2",
["bool"] = "keyword2",
["true"] = "literal",
["false"] = "literal",
["NULL"] = "literal",
["#include"] = "keyword",
["#if"] = "keyword",
["#ifdef"] = "keyword",
["#ifndef"] = "keyword",
["#elif"] = "keyword",
["#else"] = "keyword",
["#elseif"] = "keyword",
["#endif"] = "keyword",
["#define"] = "keyword",
["#warning"] = "keyword",
["#error"] = "keyword",
["#pragma"] = "keyword",
},
}
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