File: /home/confeduphaar/backip-old-files/media/editors/codemirror/mode/scheme/scheme.js
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE
/**
* Author: Koh Zi Han, based on implementation by Koh Zi Chun
*/
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineMode("scheme", function () {
var BUILTIN = "builtin", COMMENT = "comment", STRING = "string",
ATOM = "atom", NUMBER = "number", BRACKET = "bracket";
var INDENT_WORD_SKIP = 2;
function makeKeywords(str) {
var obj = {}, words = str.split(" ");
for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
return obj;
}
var keywords = makeKeywords("λ case-lambda call/cc class define-class exit-handler field import inherit init-field interface let*-values let-values let/ec mixin opt-lambda override protect provide public rename require require-for-syntax syntax syntax-case syntax-error unit/sig unless when with-syntax and begin call-with-current-continuation call-with-input-file call-with-output-file case cond define define-syntax delay do dynamic-wind else for-each if lambda let let* let-syntax letrec letrec-syntax map or syntax-rules abs acos angle append apply asin assoc assq assv atan boolean? caar cadr call-with-input-file call-with-output-file call-with-values car cdddar cddddr cdr ceiling char->integer char-alphabetic? char-ci<=? char-ci<? char-ci=? char-ci>=? char-ci>? char-downcase char-lower-case? char-numeric? char-ready? char-upcase char-upper-case? char-whitespace? char<=? char<? char=? char>=? char>? char? close-input-port close-output-port complex? cons cos current-input-port current-output-port denominator display eof-object? eq? equal? eqv? eval even? exact->inexact exact? exp expt #f floor force gcd imag-part inexact->exact inexact? input-port? integer->char integer? interaction-environment lcm length list list->string list->vector list-ref list-tail list? load log magnitude make-polar make-rectangular make-string make-vector max member memq memv min modulo negative? newline not null-environment null? number->string number? numerator odd? open-input-file open-output-file output-port? pair? peek-char port? positive? procedure? quasiquote quote quotient rational? rationalize read read-char real-part real? remainder reverse round scheme-report-environment set! set-car! set-cdr! sin sqrt string string->list string->number string->symbol string-append string-ci<=? string-ci<? string-ci=? string-ci>=? string-ci>? string-copy string-fill! string-length string-ref string-set! string<=? string<? string=? string>=? string>? string? substring symbol->string symbol? #t tan transcript-off transcript-on truncate values vector vector->list vector-fill! vector-length vector-ref vector-set! with-input-from-file with-output-to-file write write-char zero?");
var indentKeys = makeKeywords("define let letrec let* lambda");
function stateStack(indent, type, prev) { // represents a state stack object
this.indent = indent;
this.type = type;
this.prev = prev;
}
function pushStack(state, indent, type) {
state.indentStack = new stateStack(indent, type, state.indentStack);
}
function popStack(state) {
state.indentStack = state.indentStack.prev;
}
var binaryMatcher = new RegExp(/^(?:[-+]i|[-+][01]+#*(?:\/[01]+#*)?i|[-+]?[01]+#*(?:\/[01]+#*)?@[-+]?[01]+#*(?:\/[01]+#*)?|[-+]?[01]+#*(?:\/[01]+#*)?[-+](?:[01]+#*(?:\/[01]+#*)?)?i|[-+]?[01]+#*(?:\/[01]+#*)?)(?=[()\s;"]|$)/i);
var octalMatcher = new RegExp(/^(?:[-+]i|[-+][0-7]+#*(?:\/[0-7]+#*)?i|[-+]?[0-7]+#*(?:\/[0-7]+#*)?@[-+]?[0-7]+#*(?:\/[0-7]+#*)?|[-+]?[0-7]+#*(?:\/[0-7]+#*)?[-+](?:[0-7]+#*(?:\/[0-7]+#*)?)?i|[-+]?[0-7]+#*(?:\/[0-7]+#*)?)(?=[()\s;"]|$)/i);
var hexMatcher = new RegExp(/^(?:[-+]i|[-+][\da-f]+#*(?:\/[\da-f]+#*)?i|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?@[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?[-+](?:[\da-f]+#*(?:\/[\da-f]+#*)?)?i|[-+]?[\da-f]+#*(?:\/[\da-f]+#*)?)(?=[()\s;"]|$)/i);
var decimalMatcher = new RegExp(/^(?:[-+]i|[-+](?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)i|[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)@[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)|[-+]?(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)[-+](?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*)?i|(?:(?:(?:\d+#+\.?#*|\d+\.\d*#*|\.\d+#*|\d+)(?:[esfdl][-+]?\d+)?)|\d+#*\/\d+#*))(?=[()\s;"]|$)/i);
function isBinaryNumber (stream) {
return stream.match(binaryMatcher);
}
function isOctalNumber (stream) {
return stream.match(octalMatcher);
}
function isDecimalNumber (stream, backup) {
if (backup === true) {
stream.backUp(1);
}
return stream.match(decimalMatcher);
}
function isHexNumber (stream) {
return stream.match(hexMatcher);
}
return {
startState: function () {
return {
indentStack: null,
indentation: 0,
mode: false,
sExprComment: false,
sExprQuote: false
};
},
token: function (stream, state) {
if (state.indentStack == null && stream.sol()) {
// update indentation, but only if indentStack is empty
state.indentation = stream.indentation();
}
// skip spaces
if (stream.eatSpace()) {
return null;
}
var returnType = null;
switch(state.mode){
case "string": // multi-line string parsing mode
var next, escaped = false;
while ((next = stream.next()) != null) {
if (next == "\"" && !escaped) {
state.mode = false;
break;
}
escaped = !escaped && next == "\\";
}
returnType = STRING; // continue on in scheme-string mode
break;
case "comment": // comment parsing mode
var next, maybeEnd = false;
while ((next = stream.next()) != null) {
if (next == "#" && maybeEnd) {
state.mode = false;
break;
}
maybeEnd = (next == "|");
}
returnType = COMMENT;
break;
case "s-expr-comment": // s-expr commenting mode
state.mode = false;
if(stream.peek() == "(" || stream.peek() == "["){
// actually start scheme s-expr commenting mode
state.sExprComment = 0;
}else{
// if not we just comment the entire of the next token
stream.eatWhile(/[^\s\(\)\[\]]/); // eat symbol atom
returnType = COMMENT;
break;
}
default: // default parsing mode
var ch = stream.next();
if (ch == "\"") {
state.mode = "string";
returnType = STRING;
} else if (ch == "'") {
if (stream.peek() == "(" || stream.peek() == "["){
if (typeof state.sExprQuote != "number") {
state.sExprQuote = 0;
} // else already in a quoted expression
returnType = ATOM;
} else {
stream.eatWhile(/[\w_\-!$%&*+\.\/:<=>?@\^~]/);
returnType = ATOM;
}
} else if (ch == '#') {
if (stream.eat("|")) { // Multi-line comment
state.mode = "comment"; // toggle to comment mode
returnType = COMMENT;
} else if (stream.eat(/[tf]/i)) { // #t/#f (atom)
returnType = ATOM;
} else if (stream.eat(';')) { // S-Expr comment
state.mode = "s-expr-comment";
returnType = COMMENT;
} else {
var numTest = null, hasExactness = false, hasRadix = true;
if (stream.eat(/[ei]/i)) {
hasExactness = true;
} else {
stream.backUp(1); // must be radix specifier
}
if (stream.match(/^#b/i)) {
numTest = isBinaryNumber;
} else if (stream.match(/^#o/i)) {
numTest = isOctalNumber;
} else if (stream.match(/^#x/i)) {
numTest = isHexNumber;
} else if (stream.match(/^#d/i)) {
numTest = isDecimalNumber;
} else if (stream.match(/^[-+0-9.]/, false)) {
hasRadix = false;
numTest = isDecimalNumber;
// re-consume the intial # if all matches failed
} else if (!hasExactness) {
stream.eat('#');
}
if (numTest != null) {
if (hasRadix && !hasExactness) {
// consume optional exactness after radix
stream.match(/^#[ei]/i);
}
if (numTest(stream))
returnType = NUMBER;
}
}
} else if (/^[-+0-9.]/.test(ch) && isDecimalNumber(stream, true)) { // match non-prefixed number, must be decimal
returnType = NUMBER;
} else if (ch == ";") { // comment
stream.skipToEnd(); // rest of the line is a comment
returnType = COMMENT;
} else if (ch == "(" || ch == "[") {
var keyWord = ''; var indentTemp = stream.column(), letter;
/**
Either
(indent-word ..
(non-indent-word ..
(;something else, bracket, etc.
*/
while ((letter = stream.eat(/[^\s\(\[\;\)\]]/)) != null) {
keyWord += letter;
}
if (keyWord.length > 0 && indentKeys.propertyIsEnumerable(keyWord)) { // indent-word
pushStack(state, indentTemp + INDENT_WORD_SKIP, ch);
} else { // non-indent word
// we continue eating the spaces
stream.eatSpace();
if (stream.eol() || stream.peek() == ";") {
// nothing significant after
// we restart indentation 1 space after
pushStack(state, indentTemp + 1, ch);
} else {
pushStack(state, indentTemp + stream.current().length, ch); // else we match
}
}
stream.backUp(stream.current().length - 1); // undo all the eating
if(typeof state.sExprComment == "number") state.sExprComment++;
if(typeof state.sExprQuote == "number") state.sExprQuote++;
returnType = BRACKET;
} else if (ch == ")" || ch == "]") {
returnType = BRACKET;
if (state.indentStack != null && state.indentStack.type == (ch == ")" ? "(" : "[")) {
popStack(state);
if(typeof state.sExprComment == "number"){
if(--state.sExprComment == 0){
returnType = COMMENT; // final closing bracket
state.sExprComment = false; // turn off s-expr commenting mode
}
}
if(typeof state.sExprQuote == "number"){
if(--state.sExprQuote == 0){
returnType = ATOM; // final closing bracket
state.sExprQuote = false; // turn off s-expr quote mode
}
}
}
} else {
stream.eatWhile(/[\w_\-!$%&*+\.\/:<=>?@\^~]/);
if (keywords && keywords.propertyIsEnumerable(stream.current())) {
returnType = BUILTIN;
} else returnType = "variable";
}
}
return (typeof state.sExprComment == "number") ? COMMENT : ((typeof state.sExprQuote == "number") ? ATOM : returnType);
},
indent: function (state) {
if (state.indentStack == null) return state.indentation;
return state.indentStack.indent;
},
closeBrackets: {pairs: "()[]{}\"\""},
lineComment: ";;"
};
});
CodeMirror.defineMIME("text/x-scheme", "scheme");
});
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