diff options
Diffstat (limited to 'codemirror_ui/lib/CodeMirror-2.3/mode/scheme/scheme.js')
| -rw-r--r-- | codemirror_ui/lib/CodeMirror-2.3/mode/scheme/scheme.js | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/codemirror_ui/lib/CodeMirror-2.3/mode/scheme/scheme.js b/codemirror_ui/lib/CodeMirror-2.3/mode/scheme/scheme.js new file mode 100644 index 0000000..f981b23 --- /dev/null +++ b/codemirror_ui/lib/CodeMirror-2.3/mode/scheme/scheme.js @@ -0,0 +1,230 @@ +/** + * Author: Koh Zi Han, based on implementation by Koh Zi Chun + */ +CodeMirror.defineMode("scheme", function (config, mode) { + var BUILTIN = "builtin", COMMENT = "comment", STRING = "string", + ATOM = "atom", NUMBER = "number", BRACKET = "bracket", KEYWORD="keyword"; + var INDENT_WORD_SKIP = 2, KEYWORDS_SKIP = 1; + + 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 + }; + }, + + 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 non spaces + returnType = COMMENT; + break; + } + default: // default parsing mode + var ch = stream.next(); + + if (ch == "\"") { + state.mode = "string"; + returnType = STRING; + + } else if (ch == "'") { + 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(); + /** + 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++; + + 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 + } + } + } + } else { + stream.eatWhile(/[\w\$_\-!$%&*+\.\/:<=>?@\^~]/); + + if (keywords && keywords.propertyIsEnumerable(stream.current())) { + returnType = BUILTIN; + } else returnType = "variable"; + } + } + return (typeof state.sExprComment == "number") ? COMMENT : returnType; + }, + + indent: function (state, textAfter) { + if (state.indentStack == null) return state.indentation; + return state.indentStack.indent; + } + }; +}); + +CodeMirror.defineMIME("text/x-scheme", "scheme"); |