139 lines
4.1 KiB
JavaScript
139 lines
4.1 KiB
JavaScript
CodeMirror.defineMode("pascal", function(config) {
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function words(str) {
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var obj = {}, words = str.split(" ");
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for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
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return obj;
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}
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var keywords = words("and array begin case const div do downto else end file for forward integer " +
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"boolean char function goto if in label mod nil not of or packed procedure " +
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"program record repeat set string then to type until var while with");
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var blockKeywords = words("case do else for if switch while struct then of");
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var atoms = {"null": true};
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var isOperatorChar = /[+\-*&%=<>!?|\/]/;
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var curPunc;
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function tokenBase(stream, state) {
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var ch = stream.next();
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if (ch == "#" && state.startOfLine) {
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stream.skipToEnd();
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return "meta";
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}
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if (ch == '"' || ch == "'") {
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state.tokenize = tokenString(ch);
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return state.tokenize(stream, state);
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}
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if (ch == "(" && stream.eat("*")) {
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state.tokenize = tokenComment;
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return tokenComment(stream, state);
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}
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if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
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curPunc = ch;
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return null
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}
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if (/\d/.test(ch)) {
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stream.eatWhile(/[\w\.]/);
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return "number";
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}
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if (ch == "/") {
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if (stream.eat("/")) {
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stream.skipToEnd();
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return "comment";
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}
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}
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if (isOperatorChar.test(ch)) {
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stream.eatWhile(isOperatorChar);
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return "operator";
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}
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stream.eatWhile(/[\w\$_]/);
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var cur = stream.current();
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if (keywords.propertyIsEnumerable(cur)) {
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if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
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return "keyword";
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}
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if (atoms.propertyIsEnumerable(cur)) return "atom";
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return "word";
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}
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function tokenString(quote) {
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return function(stream, state) {
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var escaped = false, next, end = false;
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while ((next = stream.next()) != null) {
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if (next == quote && !escaped) {end = true; break;}
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escaped = !escaped && next == "\\";
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}
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if (end || !escaped) state.tokenize = null;
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return "string";
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};
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}
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function tokenComment(stream, state) {
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var maybeEnd = false, ch;
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while (ch = stream.next()) {
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if (ch == ")" && maybeEnd) {
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state.tokenize = null;
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break;
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}
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maybeEnd = (ch == "*");
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}
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return "comment";
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}
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function Context(indented, column, type, align, prev) {
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this.indented = indented;
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this.column = column;
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this.type = type;
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this.align = align;
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this.prev = prev;
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}
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function pushContext(state, col, type) {
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return state.context = new Context(state.indented, col, type, null, state.context);
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}
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function popContext(state) {
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var t = state.context.type;
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if (t == ")" || t == "]" )
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state.indented = state.context.indented;
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return state.context = state.context.prev;
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}
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// Interface
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return {
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startState: function(basecolumn) {
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return {
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tokenize: null,
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context: new Context((basecolumn || 0) - config.indentUnit, 0, "top", false),
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indented: 0,
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startOfLine: true
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};
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},
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token: function(stream, state) {
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var ctx = state.context;
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if (stream.sol()) {
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if (ctx.align == null) ctx.align = false;
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state.indented = stream.indentation();
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state.startOfLine = true;
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}
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if (stream.eatSpace()) return null;
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curPunc = null;
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var style = (state.tokenize || tokenBase)(stream, state);
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if (style == "comment" || style == "meta") return style;
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if (ctx.align == null) ctx.align = true;
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if ((curPunc == ";" || curPunc == ":") && ctx.type == "statement") popContext(state);
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else if (curPunc == "[") pushContext(state, stream.column(), "]");
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else if (curPunc == "(") pushContext(state, stream.column(), ")");
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else if (curPunc == ctx.type) popContext(state);
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else if ( ctx.type == "top" || (ctx.type == "statement" && curPunc == "newstatement"))
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pushContext(state, stream.column(), "statement");
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state.startOfLine = false;
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return style;
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},
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electricChars: "{}"
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};
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});
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CodeMirror.defineMIME("text/x-pascal", "pascal");
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