mirror of
https://github.com/overleaf/overleaf.git
synced 2024-09-16 02:52:31 -04:00
add latex syntax checking
This commit is contained in:
Brian Gough
parent
8c7d712738
commit
fe866e54fc
2 changed files with 471 additions and 57 deletions
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@ -205,35 +205,88 @@ var LatexFoldMode = require("./folding/latex").FoldMode;
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var Range = require("../range").Range;
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var WorkerClient = require("ace/worker/worker_client").WorkerClient;
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var Mode = function() {
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this.HighlightRules = LatexHighlightRules;
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this.foldingRules = new LatexFoldMode();
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this.createWorker = function(session) {
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var worker = new WorkerClient(["ace"], "ace/mode/latex_worker", "LatexWorker");
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var doc = session.getDocument();
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var selection = session.getSelection();
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var savedRange = {};
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var suppressions = [];
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var hints = [];
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var changeHandler = null;
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worker.attachToDocument(session.getDocument());
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var worker = new WorkerClient(["ace"], "ace/mode/latex_worker", "LatexWorker");
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worker.attachToDocument(doc);
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worker.on("lint", function(results) {
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doc.on("change", function () {
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if(changeHandler) {
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clearTimeout(changeHandler);
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changeHandler = null;
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}
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});
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selection.on("changeCursor", function () {
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if(suppressions.length > 0) {
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changeHandler = setTimeout(function () {
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updateMarkers();
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suppressions = [];
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changeHandler = null;
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}, 100);
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}
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});
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var updateMarkers = function () {
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var annotations = [];
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var newRange = {};
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for (var i = 0; i<results.data.length; i++) {
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var start_row = results.data[i].start_row;
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var end_row = results.data[i].end_row;
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var key = start_row + ":" + end_row;
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newRange[key] = results.data[i];
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var cursor = selection.getCursor();
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suppressions = [];
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for (var i = 0; i<hints.length; i++) {
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var data = hints[i];
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var start_row = data.start_row;
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var start_col = data.start_col;
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var end_row = data.end_row;
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var end_col = data.end_col;
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if (data.suppressIfEditing &&
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((cursor.row === start_row && cursor.column == start_col+1)
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|| (cursor.row === end_row && (cursor.column+1) == end_col))) {
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suppressions.push([start_row, start_col, end_row, end_col]);
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continue;
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}
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var suppress = false;
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for (var j = 0; j < suppressions.length; j++) {
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var e=suppressions[j];
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var fromRow=e[0], fromCol=e[1], toRow=e[2], toCol=e[3];
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if (start_row == fromRow && start_col >= fromCol && start_row === toRow && start_col <= toCol) {
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suppress = true;
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break;
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}
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}
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if(suppress) { continue; };
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var key = "(" + start_row + "," + start_col + ")" + ":" + "(" + end_row + "," + end_col + ")";
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newRange[key] = data;
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annotations.push(data);
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}
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var newKeys = Object.keys(newRange);
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var oldKeys = Object.keys(savedRange);
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var changes = 0;
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for (i = 0; i < newKeys.length; i++) {
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key = newKeys[i];
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if (!savedRange[key]) {
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var new_range = newRange[key];
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var range = new Range(new_range.start_row, 0, new_range.end_row, Infinity);
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range.id = session.addMarker(range, "ace_error-marker", "fullLine");
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var a = doc.createAnchor(new_range.start_row, new_range.start_col);
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var b = doc.createAnchor(new_range.end_row, new_range.end_col);
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var range = new Range();
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range.start = a;
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range.end = b;
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range.id = session.addMarker(range, "ace_error-marker", "text");
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savedRange[key] = range;
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changes++;
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}
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}
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@ -241,11 +294,27 @@ var Mode = function() {
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key = oldKeys[i];
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if (!newRange[key]) {
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range = savedRange[key];
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range.start.detach();
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range.end.detach();
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session.removeMarker(range.id);
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delete savedRange[key];
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changes++;
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}
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}
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if (changes>0) {
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session.setAnnotations(annotations);
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};
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};
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worker.on("lint", function(results) {
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hints = results.data;
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if (hints.length > 100) {
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hints = hints.slice(0, 100); // limit to 100 errors
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};
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updateMarkers();
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});
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worker.on("terminate", function() {
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var oldKeys = Object.keys(savedRange);
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for (var i = 0; i < oldKeys.length; i++) {
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@ -254,7 +323,7 @@ var Mode = function() {
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session.removeMarker(range.id);
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delete savedRange[key];
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}
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});
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return worker;
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};
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@ -263,7 +332,7 @@ oop.inherits(Mode, TextMode);
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(function() {
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this.type = "text";
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this.lineCommentStart = "%";
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this.$id = "ace/mode/latex";
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@ -1414,67 +1414,412 @@ var Mirror = require("../worker/mirror").Mirror;
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var LatexWorker = exports.LatexWorker = function(sender) {
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Mirror.call(this, sender);
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this.setTimeout(500);
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this.setTimeout(250);
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};
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oop.inherits(LatexWorker, Mirror);
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var Parse = function (text) {
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var lines = text.split('\n');
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var state = [], errors = [];
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var i;
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var regex = /^\s*\\(begin|end)\{(\w+\*?)\}/; // keep the regex outside the loop for performance
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for (i = 0; i < lines.length; i++) {
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var line = lines[i];
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var result;
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var error = null;
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regex.lastIndex = 0;
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if ((result = regex.exec(line))) {
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var type = result[1];
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var env = result[2];
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if (type == "begin") {
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state.push({"env":env, "row": i});
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} else if (type == "end") {
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var last_open = state.pop();
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if (last_open && last_open.env == env) {
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} else if (last_open && last_open.env != env) {
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error = {"type":"info", "text": "end " + env + "with begin " + last_open.env, "start_row": last_open.row, "end_row":i };
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} else if (!last_open) {
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error = {"type":"info", "text": "end without begin " + type, "start_row": 0, "end_row": i};
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var errors = [];
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var Comments = [];
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var Tokens = [];
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var Environments = [];
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var pos = -1;
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var SPECIAL = /[\\\{\}\$\&\#\^\_\~\%]/g;
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var CS = /[^a-zA-Z]/g;
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var idx = 0;
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var lineNumber = 0;
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var linePosition = [];
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linePosition[0] = 0;
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var TokenError = function (token, message) {
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var line = token[0], type = token[1], start = token[2], end = token[3], seq = token[4];
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var start_col = start - linePosition[line];
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var end_col = end - linePosition[line] + 1;
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errors.push({row: line,
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column: start_col,
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start_row:line,
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start_col: start_col,
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end_row:line,
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end_col: end_col,
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type:"error",
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text:message,
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suppressIfEditing:true});
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};
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var TokenErrorFromTo = function (fromToken, toToken, message) {
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var fromLine = fromToken[0], fromStart = fromToken[2], fromEnd = fromToken[3];
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var toLine = toToken[0], toStart = toToken[2], toEnd = toToken[3];
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if (!toEnd) { toEnd = toStart + 1;};
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var start_col = fromStart - linePosition[fromLine];
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var end_col = toEnd - linePosition[toLine] + 1;
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errors.push({row: line,
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column: start_col,
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start_row: fromLine,
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start_col: start_col,
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end_row: toLine,
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end_col: end_col,
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type:"error",
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text:message,
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suppressIfEditing:true});
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};
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var EnvErrorFromTo = function (fromEnv, toEnv, message, options) {
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if(!options) { options = {} ; };
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var fromToken = fromEnv.token, toToken = toEnv.closeToken || toEnv.token;
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var fromLine = fromToken[0], fromStart = fromToken[2], fromEnd = fromToken[3], fromSeq = fromToken[4];
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if (!toToken) {toToken = fromToken;};
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var toLine = toToken[0], toStart = toToken[2], toEnd = toToken[3], toSeq = toToken[4];
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if (!toEnd) { toEnd = toStart + 1;};
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var start_col = fromStart - linePosition[fromLine];
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var end_col = toEnd - linePosition[toLine] + 1;
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errors.push({row:toLine,
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column:end_col,
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start_row:fromLine,
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start_col: start_col,
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end_row:toLine,
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end_col: end_col,
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type:"error",
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text:message,
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suppressIfEditing:options.suppressIfEditing});
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};
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var EnvErrorTo = function (toEnv, message) {
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var token = toEnv.closeToken || toEnv.token;
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var line = token[0], type = token[1], start = token[2], end = token[3], seq = token[4];
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if (!end) { end = start + 1; };
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var end_col = end - linePosition[line] + 1;
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var err = {row: line,
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column: end_col,
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start_row:0,
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start_col: 0,
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end_row: line,
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end_col: end_col,
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type:"error",
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text:message};
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errors.push(err);
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};
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var EnvErrorFrom = function (env, message) {
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var token = env.token;
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var line = token[0], type = token[1], start = token[2], end = token[3], seq = token[4];
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var start_col = start - linePosition[line];
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var end_col = Infinity;
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errors.push({row: line,
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column: start_col,
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start_row:line,
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start_col: start_col,
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end_row: lineNumber,
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end_col: end_col,
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type:"error",
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text:message});
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};
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var checkingDisabled = false;
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while (true) {
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var result = SPECIAL.exec(text);
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if (result == null) {
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if (idx < text.length) {
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Tokens.push([lineNumber, "Text", idx, text.length]);
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}
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break;
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}
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if (result && result.index <= pos) {
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break;
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};
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pos = result.index;
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var newIdx = SPECIAL.lastIndex;
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if (pos > idx) {
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Tokens.push([lineNumber, "Text", idx, pos]);
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}
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for (var i = idx; i < pos; i++) {
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if (text[i] === "\n") {
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lineNumber++;
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linePosition[lineNumber] = i+1;
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}
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}
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idx = newIdx;
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var code = result[0];
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if (code === "%") {
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var newLinePos = text.indexOf("\n", idx);
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if (newLinePos === -1) {
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newLinePos = text.length;
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};
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var commentString = text.substring(idx, newLinePos);
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if (commentString.indexOf("%novalidate") === 0) {
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return [];
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} else if(!checkingDisabled && commentString.indexOf("%begin novalidate") === 0) {
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checkingDisabled = true;
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} else if (checkingDisabled && commentString.indexOf("%end novalidate") === 0) {
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checkingDisabled = false;
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};
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idx = SPECIAL.lastIndex = newLinePos + 1;
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Comments.push([lineNumber, idx, newLinePos]);
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lineNumber++;
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linePosition[lineNumber] = idx;
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} else if (checkingDisabled) {
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continue;
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} else if (code === '\\') {
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CS.lastIndex = idx;
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var controlSequence = CS.exec(text);
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var nextSpecialPos = controlSequence === null ? idx : controlSequence.index;
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if (nextSpecialPos === idx) {
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Tokens.push([lineNumber, code, pos, idx + 1, text[idx]]);
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idx = SPECIAL.lastIndex = idx + 1;
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char = text[nextSpecialPos];
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if (char === '\n') { lineNumber++; linePosition[lineNumber] = nextSpecialPos;};
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} else {
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Tokens.push([lineNumber, code, pos, nextSpecialPos, text.slice(idx, nextSpecialPos)]);
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var char;
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while ((char = text[nextSpecialPos]) === ' ' || char === '\t' || char === '\r' || char === '\n') {
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nextSpecialPos++;
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if (char === '\n') { lineNumber++; linePosition[lineNumber] = nextSpecialPos;};
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}
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idx = SPECIAL.lastIndex = nextSpecialPos;
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}
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} else if (code === "{") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "}") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "$") {
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if (text[idx] === "$") {
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idx = SPECIAL.lastIndex = idx + 1;
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Tokens.push([lineNumber, "$$", pos]);
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} else {
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Tokens.push([lineNumber, code, pos]);
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}
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} else if (code === "&") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "#") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "^") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "_") {
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Tokens.push([lineNumber, code, pos]);
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} else if (code === "~") {
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Tokens.push([lineNumber, code, pos]);
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} else {
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throw "unrecognised character " + code;
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}
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}
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var read1arg = function (k) {
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var open = Tokens[k+1];
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var env = Tokens[k+2];
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var close = Tokens[k+3];
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var envName;
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if(open && open[1] === "\\") {
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envName = open[4];
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return k + 1;
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} else if(open && open[1] === "{" && env && env[1] === "\\" && close && close[1] === "}") {
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envName = env[4];
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return k + 3;
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} else {
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return null;
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}
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};
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var read1name = function (k) {
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var open = Tokens[k+1];
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var env = Tokens[k+2];
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var close = Tokens[k+3];
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if(open && open[1] === "{" && env && env[1] === "Text" && close && close[1] === "}") {
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var envName = text.substring(env[2], env[3]);
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return k + 3;
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} else {
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return null;
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}
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};
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var readOptionalParams = function(k) {
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var params = Tokens[k+1];
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if(params && params[1] === "Text") {
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var paramNum = text.substring(params[2], params[3]);
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if (paramNum.match(/^\[\d+\]$/)) {
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return k + 1;
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};
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};
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if (error) {
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errors.push(error);
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};
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return null;
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};
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if (state.length > 0) {
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for (i = 0; i < state.length; i++) {
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var unclosed = state[i];
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error = {"type":"info", "text": "begin without end " + unclosed.type, "start_row": unclosed.row, "end_row": lines.length-1};
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errors.push(error);
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};
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var readDefinition = function(k) {
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k = k + 1;
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var count = 0;
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var nextToken = Tokens[k];
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while (nextToken && nextToken[1] === "Text") {
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var start = nextToken[2], end = nextToken[3];
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for (i = start; i < end; i++) {
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var char = text[i];
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if (char === ' ' || char === '\t' || char === '\r' || char === '\n') { continue; }
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return null;
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}
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k++;
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nextToken = Tokens[k];
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}
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if (nextToken && nextToken[1] === "{") {
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count++;
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while (count>0) {
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k++;
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nextToken = Tokens[k];
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if(!nextToken) { break; };
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if (nextToken[1] === "}") { count--; }
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if (nextToken[1] === "{") { count++; }
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}
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return k;
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}
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return null;
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};
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if (errors.length) {
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return [errors[0]];
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};
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for (var _j = 0, _len = Tokens.length; _j < _len; _j++) {
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var token = Tokens[_j];
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var line = token[0], type = token[1], start = token[2], end = token[3], seq = token[4];
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if (type === "\\") {
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if (seq === "begin" || seq === "end") {
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var open = Tokens[_j+1];
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var env = Tokens[_j+2];
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var close = Tokens[_j+3];
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if(open && open[1] === "{" && env && env[1] === "Text" && close && close[1] === "}") {
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var envName = text.substring(env[2], env[3]);
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Environments.push({command: seq, name: envName, token: token, closeToken: close});
|
||||
_j = _j + 3; // advance past these tokens
|
||||
} else {
|
||||
var endToken = null;
|
||||
if (open && open[1] === "{") {
|
||||
endToken = open;
|
||||
|
||||
if (env && env[1] === "Text") {
|
||||
endToken = env.slice();
|
||||
start = endToken[2]; end = endToken[3];
|
||||
for (i = start; i < end; i++) {
|
||||
char = text[i];
|
||||
if (char === ' ' || char === '\t' || char === '\r' || char === '\n') { break; }
|
||||
}
|
||||
endToken[3] = i;
|
||||
};
|
||||
};
|
||||
|
||||
if (endToken) {
|
||||
TokenErrorFromTo(token, endToken, "invalid environment command" + text.substring(token[2], endToken[3] || endToken[2]));
|
||||
} else {
|
||||
TokenError(token, "invalid environment command");
|
||||
};
|
||||
}
|
||||
} else if (seq === "newcommand" || seq === "renewcommand" || seq === "def" || seq === "DeclareRobustCommand") {
|
||||
|
||||
var newPos = read1arg(_j);
|
||||
if (newPos === null) { continue; } else {_j = newPos;};
|
||||
|
||||
newPos = readOptionalParams(_j);
|
||||
if (newPos === null) { /* do nothing */ } else {_j = newPos;};
|
||||
|
||||
newPos = readDefinition(_j);
|
||||
if (newPos === null) { /* do nothing */ } else {_j = newPos;};
|
||||
|
||||
} else if (seq === "newenvironment") {
|
||||
|
||||
newPos = read1name(_j);
|
||||
if (newPos === null) { continue; } else {_j = newPos;};
|
||||
|
||||
newPos = readOptionalParams(_j);
|
||||
if (newPos === null) { /* do nothing */ } else {_j = newPos;};
|
||||
|
||||
newPos = readDefinition(_j);
|
||||
if (newPos === null) { /* do nothing */ } else {_j = newPos;};
|
||||
|
||||
newPos = readDefinition(_j);
|
||||
if (newPos === null) { /* do nothing */ } else {_j = newPos;};
|
||||
}
|
||||
} else if (type === "{") {
|
||||
Environments.push({command:"{", token:token});
|
||||
} else if (type === "}") {
|
||||
Environments.push({command:"}", token:token});
|
||||
};
|
||||
|
||||
if ((start != null) && (end != null) && (seq != null)) {
|
||||
} else if ((start != null) && (end != null)) {
|
||||
} else if (start != null) {
|
||||
} else {
|
||||
}
|
||||
}
|
||||
var state = [];
|
||||
for (i = 0; i < Environments.length; i++) {
|
||||
var thisEnv = Environments[i];
|
||||
if(thisEnv.command === "begin" || thisEnv.command === "{") {
|
||||
state.push(thisEnv);
|
||||
} else if (thisEnv.command === "end" || thisEnv.command === "}") {
|
||||
var lastEnv = state.pop();
|
||||
if (!lastEnv) {
|
||||
if (thisEnv.command === "}") {
|
||||
EnvErrorTo(thisEnv, "unexpected end group }");
|
||||
} else if (thisEnv.command === "end") {
|
||||
EnvErrorTo(thisEnv, "unexpected \\end{" + thisEnv.name + "}");
|
||||
}
|
||||
} else if (lastEnv.command === "{" && thisEnv.command === "}") {
|
||||
continue; // closed group correctly
|
||||
} else if (lastEnv.name === thisEnv.name) {
|
||||
continue; // closed environment correctly
|
||||
} else if (thisEnv.command === "}") {
|
||||
EnvErrorFromTo(lastEnv, thisEnv, "unexpected end group } after \\begin{" + lastEnv.name +"}");
|
||||
state.push(lastEnv);
|
||||
} else if (lastEnv.command === "{" && thisEnv.command === "end") {
|
||||
EnvErrorFromTo(lastEnv, thisEnv, "unexpected \\end{" + thisEnv.name + "} inside group {", {suppressIfEditing:true});
|
||||
i--;
|
||||
} else if (lastEnv.command === "begin" && thisEnv.command === "end") {
|
||||
EnvErrorFromTo(lastEnv, thisEnv, "unexpected \\end{" + thisEnv.name + "} after \\begin{" + lastEnv.name + "}");
|
||||
for (var j = i + 1; j < Environments.length; j++) {
|
||||
var futureEnv = Environments[j];
|
||||
if (futureEnv.command === "end" && futureEnv.name === lastEnv.name) {
|
||||
state.push(lastEnv);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
lastEnv = state.pop();
|
||||
if(lastEnv) {
|
||||
if (thisEnv.name === lastEnv.name) {
|
||||
continue;
|
||||
} else {
|
||||
state.push(lastEnv);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
while (state.length > 0) {
|
||||
thisEnv = state.pop();
|
||||
if (thisEnv.command === "{") {
|
||||
EnvErrorFrom(thisEnv, "unclosed group {");
|
||||
} else if (thisEnv.command === "begin") {
|
||||
EnvErrorFrom(thisEnv, "unclosed environment \\begin{" + thisEnv.name + "}");
|
||||
};
|
||||
}
|
||||
return errors;
|
||||
};
|
||||
|
||||
|
||||
(function() {
|
||||
var disabled = false;
|
||||
|
||||
this.onUpdate = function() {
|
||||
var value = this.doc.getValue();
|
||||
var errors = [];
|
||||
if (disabled) { return ; };
|
||||
|
||||
var value = this.doc.getValue();
|
||||
var errors = [];
|
||||
try {
|
||||
if (value)
|
||||
errors = Parse(value);
|
||||
} catch (e) {
|
||||
console.log("latex worker error",e);
|
||||
}
|
||||
this.sender.emit("lint", errors);
|
||||
if (value)
|
||||
errors = Parse(value);
|
||||
} catch (e) {
|
||||
disabled = true;
|
||||
errors = [];
|
||||
}
|
||||
this.sender.emit("lint", errors);
|
||||
};
|
||||
|
||||
}).call(LatexWorker.prototype);
|
||||
|
|
|
|||
Loading…
Reference in a new issue