{
  "displayName": "Scheme",
  "fileTypes": [
    "scm",
    "ss",
    "sch",
    "rkt"
  ],
  "name": "scheme",
  "patterns": [
    {
      "include": "#comment"
    },
    {
      "include": "#block-comment"
    },
    {
      "include": "#sexp"
    },
    {
      "include": "#string"
    },
    {
      "include": "#language-functions"
    },
    {
      "include": "#quote"
    },
    {
      "include": "#illegal"
    }
  ],
  "repository": {
    "block-comment": {
      "begin": "#\\|",
      "contentName": "comment",
      "end": "\\|#",
      "name": "comment",
      "patterns": [
        {
          "include": "#block-comment",
          "name": "comment"
        }
      ]
    },
    "comment": {
      "begin": "(^[\\t ]+)?(?=;)",
      "beginCaptures": {
        "1": {
          "name": "punctuation.whitespace.comment.leading.scheme"
        }
      },
      "end": "(?!\\G)",
      "patterns": [
        {
          "begin": ";",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.comment.scheme"
            }
          },
          "end": "\\n",
          "name": "comment.line.semicolon.scheme"
        }
      ]
    },
    "constants": {
      "patterns": [
        {
          "match": "#[ft|]",
          "name": "constant.language.boolean.scheme"
        },
        {
          "match": "(?<=[(\\s])((#[ei])?[0-9]+(\\.[0-9]+)?|(#x)\\h+|(#o)[0-7]+|(#b)[01]+)(?=[]\"'(),;\\[\\s])",
          "name": "constant.numeric.scheme"
        }
      ]
    },
    "illegal": {
      "match": "[]()\\[]",
      "name": "invalid.illegal.parenthesis.scheme"
    },
    "language-functions": {
      "patterns": [
        {
          "match": "(?<=([(\\[\\s]))(do|or|and|else|quasiquote|begin|if|case|set!|cond|let|unquote|define|let\\*|unquote-splicing|delay|letrec)(?=([(\\s]))",
          "name": "keyword.control.scheme"
        },
        {
          "match": "(?<=([(\\s]))(char-alphabetic|char-lower-case|char-numeric|char-ready|char-upper-case|char-whitespace|(?:char|string)(?:-ci)?(?:=|<=?|>=?)|atom|boolean|bound-identifier=|char|complex|identifier|integer|symbol|free-identifier=|inexact|eof-object|exact|list|(?:in|out)put-port|pair|real|rational|zero|vector|negative|odd|null|string|eq|equal|eqv|even|number|positive|procedure)(\\?)(?=([(\\s]))",
          "name": "support.function.boolean-test.scheme"
        },
        {
          "match": "(?<=([(\\s]))(char->integer|exact->inexact|inexact->exact|integer->char|symbol->string|list->vector|list->string|identifier->symbol|vector->list|string->list|string->number|string->symbol|number->string)(?=([(\\s]))",
          "name": "support.function.convert-type.scheme"
        },
        {
          "match": "(?<=([(\\s]))(set-c[ad]r|(?:vector|string)-(?:fill|set))(!)(?=([(\\s]))",
          "name": "support.function.with-side-effects.scheme"
        },
        {
          "match": "(?<=([(\\s]))(>=?|<=?|[-*+/=])(?=([(\\s]))",
          "name": "keyword.operator.arithmetic.scheme"
        },
        {
          "match": "(?<=([(\\s]))(append|apply|approximate|call-with-current-continuation|call/cc|catch|construct-identifier|define-syntax|display|foo|for-each|force|format|cd|gen-counter|gen-loser|generate-identifier|last-pair|length|let-syntax|letrec-syntax|list|list-ref|list-tail|load|log|macro|magnitude|map|map-streams|max|member|memq|memv|min|newline|nil|not|peek-char|rationalize|read|read-char|return|reverse|sequence|substring|syntax|syntax-rules|transcript-off|transcript-on|truncate|unwrap-syntax|values-list|write|write-char|cons|c([ad]){1,4}r|abs|acos|angle|asin|assoc|assq|assv|atan|ceiling|cos|floor|round|sin|sqrt|tan|(?:real|imag)-part|numerator|denominatormodulo|exp|expt|remainder|quotient|lcm|call-with-(?:in|out)put-file|c(?:lose|urrent)-(?:in|out)put-port|with-(?:in|out)put-from-file|open-(?:in|out)put-file|char-(?:downcase|upcase|ready)|make-(?:polar|promise|rectangular|string|vector)string(?:-(?:append|copy|length|ref))?|vector-(?:length|ref))(?=([(\\s]))",
          "name": "support.function.general.scheme"
        }
      ]
    },
    "quote": {
      "patterns": [
        {
          "captures": {
            "1": {
              "name": "punctuation.section.quoted.symbol.scheme"
            }
          },
          "match": "(')\\s*(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*)",
          "name": "constant.other.symbol.scheme"
        },
        {
          "captures": {
            "1": {
              "name": "punctuation.section.quoted.empty-list.scheme"
            },
            "2": {
              "name": "meta.expression.scheme"
            },
            "3": {
              "name": "punctuation.section.expression.begin.scheme"
            },
            "4": {
              "name": "punctuation.section.expression.end.scheme"
            }
          },
          "match": "(')\\s*((\\()\\s*(\\)))",
          "name": "constant.other.empty-list.schem"
        },
        {
          "begin": "(')\\s*",
          "beginCaptures": {
            "1": {
              "name": "punctuation.section.quoted.scheme"
            }
          },
          "end": "(?=[()\\s])|(?<=\\n)",
          "name": "string.other.quoted-object.scheme",
          "patterns": [
            {
              "include": "#quoted"
            }
          ]
        }
      ]
    },
    "quote-sexp": {
      "begin": "(?<=\\()\\s*(quote)\\s+",
      "beginCaptures": {
        "1": {
          "name": "keyword.control.quote.scheme"
        }
      },
      "contentName": "string.other.quote.scheme",
      "end": "(?=[)\\s])|(?<=\\n)",
      "patterns": [
        {
          "include": "#quoted"
        }
      ]
    },
    "quoted": {
      "patterns": [
        {
          "include": "#string"
        },
        {
          "begin": "(\\()",
          "beginCaptures": {
            "1": {
              "name": "punctuation.section.expression.begin.scheme"
            }
          },
          "end": "(\\))",
          "endCaptures": {
            "1": {
              "name": "punctuation.section.expression.end.scheme"
            }
          },
          "name": "meta.expression.scheme",
          "patterns": [
            {
              "include": "#quoted"
            }
          ]
        },
        {
          "include": "#quote"
        },
        {
          "include": "#illegal"
        }
      ]
    },
    "sexp": {
      "begin": "(\\()",
      "beginCaptures": {
        "1": {
          "name": "punctuation.section.expression.begin.scheme"
        }
      },
      "end": "(\\))(\\n)?",
      "endCaptures": {
        "1": {
          "name": "punctuation.section.expression.end.scheme"
        },
        "2": {
          "name": "meta.after-expression.scheme"
        }
      },
      "name": "meta.expression.scheme",
      "patterns": [
        {
          "include": "#comment"
        },
        {
          "begin": "(?<=\\()(define)\\s+(\\()(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*)((\\s+(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*|[._]))*)\\s*(\\))",
          "captures": {
            "1": {
              "name": "keyword.control.scheme"
            },
            "2": {
              "name": "punctuation.definition.function.scheme"
            },
            "3": {
              "name": "entity.name.function.scheme"
            },
            "4": {
              "name": "variable.parameter.function.scheme"
            },
            "7": {
              "name": "punctuation.definition.function.scheme"
            }
          },
          "end": "(?=\\))",
          "name": "meta.declaration.procedure.scheme",
          "patterns": [
            {
              "include": "#comment"
            },
            {
              "include": "#sexp"
            },
            {
              "include": "#illegal"
            }
          ]
        },
        {
          "begin": "(?<=\\()(lambda)\\s+(\\()((?:(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*|[._])\\s+)*(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*|[._])?)(\\))",
          "captures": {
            "1": {
              "name": "keyword.control.scheme"
            },
            "2": {
              "name": "punctuation.definition.variable.scheme"
            },
            "3": {
              "name": "variable.parameter.scheme"
            },
            "6": {
              "name": "punctuation.definition.variable.scheme"
            }
          },
          "end": "(?=\\))",
          "name": "meta.declaration.procedure.scheme",
          "patterns": [
            {
              "include": "#comment"
            },
            {
              "include": "#sexp"
            },
            {
              "include": "#illegal"
            }
          ]
        },
        {
          "begin": "(?<=\\()(define)\\s(\\p{alnum}[!$%\\&*-/:<-@^_~[:alnum:]]*)\\s*.*?",
          "captures": {
            "1": {
              "name": "keyword.control.scheme"
            },
            "2": {
              "name": "variable.other.scheme"
            }
          },
          "end": "(?=\\))",
          "name": "meta.declaration.variable.scheme",
          "patterns": [
            {
              "include": "#comment"
            },
            {
              "include": "#sexp"
            },
            {
              "include": "#illegal"
            }
          ]
        },
        {
          "include": "#quote-sexp"
        },
        {
          "include": "#quote"
        },
        {
          "include": "#language-functions"
        },
        {
          "include": "#string"
        },
        {
          "include": "#constants"
        },
        {
          "match": "(?<=[(\\s])(#\\\\)(space|newline|tab)(?=[)\\s])",
          "name": "constant.character.named.scheme"
        },
        {
          "match": "(?<=[(\\s])(#\\\\)x[0-9A-F]{2,4}(?=[)\\s])",
          "name": "constant.character.hex-literal.scheme"
        },
        {
          "match": "(?<=[(\\s])(#\\\\).(?=[)\\s])",
          "name": "constant.character.escape.scheme"
        },
        {
          "match": "(?<=[ ()])\\.(?=[ ()])",
          "name": "punctuation.separator.cons.scheme"
        },
        {
          "include": "#sexp"
        },
        {
          "include": "#illegal"
        }
      ]
    },
    "string": {
      "begin": "(\")",
      "beginCaptures": {
        "1": {
          "name": "punctuation.definition.string.begin.scheme"
        }
      },
      "end": "(\")",
      "endCaptures": {
        "1": {
          "name": "punctuation.definition.string.end.scheme"
        }
      },
      "name": "string.quoted.double.scheme",
      "patterns": [
        {
          "match": "\\\\.",
          "name": "constant.character.escape.scheme"
        }
      ]
    }
  },
  "scopeName": "source.scheme"
}