{
  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
  "name": "sx",
  "scopeName": "source.sx",
  "patterns": [
    { "include": "#comments" },
    { "include": "#strings" },
    { "include": "#directives" },
    { "include": "#keywords" },
    { "include": "#types" },
    { "include": "#type-declaration" },
    { "include": "#type-annotation" },
    { "include": "#constants" },
    { "include": "#numbers" },
    { "include": "#operators" },
    { "include": "#function-declaration" },
    { "include": "#enum-literal" },
    { "include": "#identifiers" }
  ],
  "repository": {
    "comments": {
      "patterns": [
        {
          "name": "comment.line.double-slash.sx",
          "match": "//.*$"
        }
      ]
    },
    "strings": {
      "patterns": [
        {
          "comment": "#string GLSL heredoc — embedded GLSL highlighting",
          "begin": "(#string)\\s+(GLSL|VERT|FRAG|VERTEX|FRAGMENT)\\s*$",
          "end": "^(\\2)",
          "beginCaptures": {
            "1": { "name": "keyword.other.directive.sx" },
            "2": { "name": "entity.name.tag.sx" }
          },
          "endCaptures": {
            "1": { "name": "entity.name.tag.sx" }
          },
          "contentName": "meta.embedded.block.glsl",
          "patterns": [
            { "include": "source.glsl" }
          ]
        },
        {
          "comment": "#string SQL heredoc — embedded SQL highlighting",
          "begin": "(#string)\\s+(SQL)\\s*$",
          "end": "^(\\2)",
          "beginCaptures": {
            "1": { "name": "keyword.other.directive.sx" },
            "2": { "name": "entity.name.tag.sx" }
          },
          "endCaptures": {
            "1": { "name": "entity.name.tag.sx" }
          },
          "contentName": "meta.embedded.block.sql",
          "patterns": [
            { "include": "source.sql" }
          ]
        },
        {
          "comment": "#string HTML heredoc — embedded HTML highlighting",
          "begin": "(#string)\\s+(HTML)\\s*$",
          "end": "^(\\2)",
          "beginCaptures": {
            "1": { "name": "keyword.other.directive.sx" },
            "2": { "name": "entity.name.tag.sx" }
          },
          "endCaptures": {
            "1": { "name": "entity.name.tag.sx" }
          },
          "contentName": "meta.embedded.block.html",
          "patterns": [
            { "include": "text.html.basic" }
          ]
        },
        {
          "comment": "#string JSON heredoc — embedded JSON highlighting",
          "begin": "(#string)\\s+(JSON)\\s*$",
          "end": "^(\\2)",
          "beginCaptures": {
            "1": { "name": "keyword.other.directive.sx" },
            "2": { "name": "entity.name.tag.sx" }
          },
          "endCaptures": {
            "1": { "name": "entity.name.tag.sx" }
          },
          "contentName": "meta.embedded.block.json",
          "patterns": [
            { "include": "source.json" }
          ]
        },
        {
          "comment": "#string heredoc — generic (no embedded language)",
          "begin": "(#string)\\s+([a-zA-Z_][a-zA-Z0-9_]*)\\s*$",
          "end": "^(\\2)",
          "beginCaptures": {
            "1": { "name": "keyword.other.directive.sx" },
            "2": { "name": "entity.name.tag.sx" }
          },
          "endCaptures": {
            "1": { "name": "entity.name.tag.sx" }
          },
          "contentName": "string.unquoted.heredoc.sx"
        },
        {
          "comment": "Backtick multi-line string",
          "begin": "`",
          "end": "`",
          "beginCaptures": {
            "0": { "name": "punctuation.definition.string.begin.sx" }
          },
          "endCaptures": {
            "0": { "name": "punctuation.definition.string.end.sx" }
          },
          "patterns": [
            {
              "name": "constant.character.escape.sx",
              "match": "\\\\[ntr`\"\\\\{}0]"
            },
            {
              "begin": "\\{",
              "end": "\\}",
              "beginCaptures": {
                "0": { "name": "punctuation.definition.template-expression.begin.sx" }
              },
              "endCaptures": {
                "0": { "name": "punctuation.definition.template-expression.end.sx" }
              },
              "patterns": [
                { "include": "$self" }
              ]
            },
            {
              "name": "string.quoted.other.sx",
              "match": "[^`\\\\{}]+"
            }
          ]
        },
        {
          "comment": "Double-quoted string",
          "begin": "\"",
          "end": "\"",
          "beginCaptures": {
            "0": { "name": "punctuation.definition.string.begin.sx" }
          },
          "endCaptures": {
            "0": { "name": "punctuation.definition.string.end.sx" }
          },
          "patterns": [
            {
              "name": "constant.character.escape.sx",
              "match": "\\\\[ntr\"\\\\{}0]"
            },
            {
              "begin": "\\{",
              "end": "\\}",
              "beginCaptures": {
                "0": { "name": "punctuation.definition.template-expression.begin.sx" }
              },
              "endCaptures": {
                "0": { "name": "punctuation.definition.template-expression.end.sx" }
              },
              "patterns": [
                { "include": "$self" }
              ]
            },
            {
              "name": "string.quoted.double.sx",
              "match": "[^\"\\\\{}]+"
            }
          ]
        }
      ]
    },
    "directives": {
      "patterns": [
        {
          "name": "keyword.other.directive.sx",
          "match": "#(?:run|import|insert|builtin|foreign|library)\\b"
        }
      ]
    },
    "keywords": {
      "patterns": [
        {
          "name": "keyword.control.sx",
          "match": "\\b(if|else|then|return|case|break|defer)\\b"
        },
        {
          "name": "keyword.other.sx",
          "match": "\\b(enum|struct)\\b"
        },
        {
          "name": "keyword.operator.cast.sx",
          "match": "\\bxx\\b"
        }
      ]
    },
    "types": {
      "patterns": [
        {
          "name": "storage.type.sx",
          "match": "\\b(s[0-9]+|u[0-9]+|f32|f64|bool|string)\\b"
        }
      ]
    },
    "type-declaration": {
      "patterns": [
        {
          "match": "([A-Z][a-zA-Z0-9_]*)\\s*(::)\\s*(?=struct\\b|enum\\b)",
          "captures": {
            "1": { "name": "entity.name.type.sx" },
            "2": { "name": "keyword.operator.declaration.sx" }
          }
        }
      ]
    },
    "type-annotation": {
      "patterns": [
        {
          "match": "(?<![:]):\\s*(?![=:])([A-Z][a-zA-Z0-9_]*)\\b",
          "captures": {
            "1": { "name": "entity.name.type.sx" }
          }
        }
      ]
    },
    "constants": {
      "patterns": [
        {
          "name": "constant.language.sx",
          "match": "\\b(true|false)\\b"
        },
        {
          "name": "constant.language.undefined.sx",
          "match": "---"
        }
      ]
    },
    "numbers": {
      "patterns": [
        {
          "name": "constant.numeric.float.sx",
          "match": "\\b[0-9]+\\.[0-9]+\\b"
        },
        {
          "name": "constant.numeric.integer.sx",
          "match": "\\b[0-9]+\\b"
        }
      ]
    },
    "operators": {
      "patterns": [
        {
          "name": "keyword.operator.declaration.sx",
          "match": "::"
        },
        {
          "name": "keyword.operator.walrus.sx",
          "match": ":="
        },
        {
          "name": "keyword.operator.arrow.sx",
          "match": "->|=>"
        },
        {
          "name": "keyword.operator.comparison.sx",
          "match": "==|!=|<=|>="
        },
        {
          "name": "keyword.operator.assignment.sx",
          "match": "[+\\-*/]="
        },
        {
          "name": "keyword.operator.sx",
          "match": "[+\\-*/=<>!]"
        }
      ]
    },
    "function-declaration": {
      "patterns": [
        {
          "match": "([a-zA-Z_][a-zA-Z0-9_]*)\\s*(::)\\s*(?=\\(|\\{)",
          "captures": {
            "1": { "name": "entity.name.function.sx" },
            "2": { "name": "keyword.operator.declaration.sx" }
          }
        }
      ]
    },
    "enum-literal": {
      "patterns": [
        {
          "match": "\\.([a-zA-Z_][a-zA-Z0-9_]*)",
          "captures": {
            "1": { "name": "variable.other.enummember.sx" }
          }
        }
      ]
    },
    "identifiers": {
      "patterns": [
        {
          "name": "variable.other.generic-type.sx",
          "match": "\\$([a-zA-Z_][a-zA-Z0-9_]*)",
          "captures": {
            "1": { "name": "entity.name.type.parameter.sx" }
          }
        },
        {
          "match": "\\b(io)\\b",
          "name": "support.module.sx"
        }
      ]
    }
  }
}