Improved language_php plugin

* Removed language_phps.lua
* Merged language_phps to language_php to simplify installation
* Allow php syntax coloring inside <style> and <script> tags

1 files changed, 172 insertions, 5 deletions

diff --git a/plugins/language_php.lua b/plugins/language_php.lua
index 4f107aa..5ee6a93 100644
--- a/plugins/language_php.lua
+++ b/plugins/language_php.lua
@@ -1,13 +1,149 @@
 -- mod-version:2 -- lite-xl 2.0
 --[[
-    language_php.lua
-    provides php syntax support allowing mixed html, css and js
-    version: 20210513_144200
-
-    Depends on plugin language_phps.lua version >= 20210512_181200
+  language_php.lua
+  provides php syntax support allowing mixed html, css and js
+  version: 20210902_1
 --]]
 local syntax = require "core.syntax"
 
+-- load syntax dependencies to add additional rules
+require "plugins.language_css"
+require "plugins.language_js"
+
+-- define the core php syntax coloring
+syntax.add {
+  files = { "%.phps$" },
+  headers = "^<%?php",
+  comment = "//",
+  patterns = {
+    -- Attributes
+    { pattern = {"#%[", "%]"},               type = "normal"   },
+    -- Comments
+    { pattern = "//.-\n",                    type = "comment"  },
+    { pattern = "#.-\n",                     type = "comment"  },
+    { pattern = { "/%*", "%*/" },            type = "comment"  },
+    -- The '\\' is for escaping to work on " or '
+    { pattern = { '"', '"', '\\' },          type = "string"   },
+    { pattern = { "'", "'", '\\' },          type = "string"   },
+    { pattern = "0[bB][%d]+",                type = "number"   },
+    { pattern = "0[xX][%da-fA-F]+",          type = "number"   },
+    { pattern = "-?%d[%d_%.eE]*",            type = "number"   },
+    { pattern = "-?%.?%d+",                  type = "number"   },
+    { pattern = "[%.%+%-=/%*%^%%<>!~|&%?:]", type = "operator" },
+     -- Variables
+    { pattern = "%$[%w_]+",                  type = "keyword2" },
+    -- Respect control structures, treat as keyword not function
+    { pattern = "if[%s]*%f[(]",              type = "keyword"  },
+    { pattern = "else[%s]*%f[(]",            type = "keyword"  },
+    { pattern = "elseif[%s]*%f[(]",          type = "keyword"  },
+    { pattern = "for[%s]*%f[(]",             type = "keyword"  },
+    { pattern = "foreach[%s]*%f[(]",         type = "keyword"  },
+    { pattern = "while[%s]*%f[(]",           type = "keyword"  },
+    { pattern = "catch[%s]*%f[(]",           type = "keyword"  },
+    { pattern = "switch[%s]*%f[(]",          type = "keyword"  },
+    { pattern = "match[%s]*%f[(]",           type = "keyword"  },
+    { pattern = "fn[%s]*%f[(]",              type = "keyword"  },
+    -- All functions that aren't control structures
+    { pattern = "[%a_][%w_]*[%s]*%f[(]",     type = "function" },
+    -- Array type hint not added on symbols to also make it work
+    -- as a function call
+    { pattern = "array",                     type = "literal"  },
+    -- Match static or namespace container on sub element access
+    { pattern = "[%a_][%w_]*[%s]*%f[:]",     type = "literal"  },
+    -- Uppercase constants of at least 3 characters in len
+    { pattern = "%u[%u_][%u%d_]+",           type = "number"   },
+    -- Magic constants
+    { pattern = "__[%u]+__",                 type = "number"   },
+    -- Everything else
+    { pattern = "[%a_][%w_]*",               type = "symbol"   },
+  },
+  symbols = {
+    ["return"] = "keyword",
+    ["if"] = "keyword",
+    ["else"] = "keyword",
+    ["elseif"] = "keyword",
+    ["endif"] = "keyword",
+    ["declare"] = "keyword",
+    ["enddeclare"] = "keyword",
+    ["switch"] = "keyword",
+    ["endswitch"] = "keyword",
+    ["as"] = "keyword",
+    ["do"] = "keyword",
+    ["for"] = "keyword",
+    ["endfor"] = "keyword",
+    ["foreach"] = "keyword",
+    ["endforeach"] = "keyword",
+    ["while"] = "keyword",
+    ["endwhile"] = "keyword",
+    ["match"] = "keyword",
+    ["case"] = "keyword",
+    ["continue"] = "keyword",
+    ["default"] = "keyword",
+    ["break"] = "keyword",
+    ["goto"] = "keyword",
+
+    ["try"] = "keyword",
+    ["catch"] = "keyword",
+    ["throw"] = "keyword",
+    ["finally"] = "keyword",
+
+    ["class"] = "keyword",
+    ["trait"] = "keyword",
+    ["interface"] = "keyword",
+    ["public"] = "keyword",
+    ["static"] = "keyword",
+    ["protected"] = "keyword",
+    ["private"] = "keyword",
+    ["abstract"] = "keyword",
+    ["final"] = "keyword",
+    ["$this"] = "literal",
+
+    ["function"] = "keyword",
+    ["fn"] = "keyword",
+    ["global"] = "keyword",
+    ["var"] = "keyword",
+    ["const"] = "keyword",
+
+    ["bool"] = "literal",
+    ["boolean"] = "literal",
+    ["int"] = "literal",
+    ["integer"] = "literal",
+    ["real"] = "literal",
+    ["double"] = "literal",
+    ["float"] = "literal",
+    ["string"] = "literal",
+    ["object"] = "literal",
+    ["callable"] = "literal",
+    ["iterable"] = "literal",
+    ["void"] = "literal",
+    ["parent"] = "literal",
+    ["self"] = "literal",
+    ["mixed"] = "literal",
+
+    ["namespace"] = "keyword",
+    ["extends"] = "keyword",
+    ["implements"] = "keyword",
+    ["instanceof"] = "keyword",
+    ["require"] = "keyword",
+    ["require_once"] = "keyword",
+    ["include"] = "keyword",
+    ["include_once"] = "keyword",
+    ["use"] = "keyword",
+    ["new"] = "keyword",
+    ["clone"] = "keyword",
+
+    ["true"] = "number",
+    ["false"] = "number",
+    ["NULL"] = "number",
+    ["null"] = "number",
+
+    ["print"] = "function",
+    ["echo"] = "function",
+    ["exit"] = "function",
+  },
+}
+
+-- allows html, css and js coloring on php files
 syntax.add {
   files = { "%.php$", "%.phtml" },
   patterns = {
@@ -68,3 +204,34 @@ syntax.add {
   symbols = {},
 }
 
+-- allow coloring of php code inside css and js code
+local syntaxes = { "css", "js" }
+for _, ext in pairs(syntaxes) do
+  local syntax_table = syntax.get("file."..ext, "")
+
+  table.insert(
+    syntax_table.patterns,
+    1,
+    {
+      pattern = {
+        "<%?=?",
+        "%?>"
+      },
+      syntax = ".phps",
+      type = "keyword2"
+    }
+  )
+
+  table.insert(
+    syntax_table.patterns,
+    1,
+    {
+      pattern = {
+        "<%?php%s+",
+        "%?>"
+      },
+      syntax = ".phps",
+      type = "keyword2"
+    }
+  )
+end