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venbrace-test-old.html
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venbrace-test-old.html
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<!Doctype HTML>
<html>
<head>
<meta charset="UTF-8">
<script src='lib/require.js'></script>
<!-- /* code for CodeMirror editor */ -->
<link rel=stylesheet href="codemirror-5.49.2/doc/docs.css">
<link rel="stylesheet" href="codemirror-5.49.2/lib/codemirror.css">
<script src="codemirror-5.49.2/lib/codemirror.js"></script>
<script src="codemirror-5.49.2/addon/edit/closebrackets.js"></script>
<script src="codemirror-5.49.2/addon/edit/matchbracketsvenbrace.js"></script>
<script src="codemirror-5.49.2/mode/venbrace/venbrace.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<style>
.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
.highlighted-scope { background-color: #e0e0e0; }
</style>
</head>
<body>
<textarea id="input" name="input" rows="10" cols="100"
placeholder="// Enter your input text to parse here..."></textarea>
<br>
<button id="submit" onClick="parse();">Parse Above Text!</button>
<p id="isBalanced">nothing</p>
<pre id="output">Output will go here....</pre>
<pre id="raw">Raw input will go here....</pre>
<p id="solution" style="display:none">((not (Button1.enabled)) or ((length ("cat")) >= (get num)))</p>
</body>
<script type="text/javascript">
// Begin local JavaScript code for this page
var antlr4 = require('./antlr4/index.js');
var VenbraceLexer = require('./VenbraceLexer').VenbraceLexer;
var VenbraceParserLib = require('./VenbraceParser')
var VenbraceParser = VenbraceParserLib.VenbraceParser;
var token_NEG_NUM = VenbraceParserLib.NEG_NUM;
var errorMsg = undefined;
'use strict';
var editor = CodeMirror.fromTextArea(document.getElementById("input"), {
mode: "venbrace",
lineNumbers: true,
autoCloseBrackets: true, // do we still want to enable this?
matchBrackets: true,
// scanForBracket: true,
cursorBlinkRate: 0}
);
var Pos = CodeMirror.Pos;
var tokenMarks = [];
class VenbraceErrorListener extends antlr4.error.ErrorListener {
syntaxError(recognizer, offendingSymbol, line, column, msg, err) {
var sourceName = recognizer.getInputStream();
// console.log(sourceName);
errorMsg = `line ${line}, col ${column}: ${msg}\n`;
// console.log(`Error found: ${offendingSymbol} line ${line}, col ${column}: ${msg}`);
this.underlineError(recognizer, offendingSymbol, line, column);
console.log(errorMsg);
}
underlineError(recognizer, offendingToken, line, column) {
var tokens = recognizer.getInputStream();
// var input = tokens.getTokenSource().getInputStream().toString();
var input = tokens.tokenSource.inputStream.strdata
var lines = input.split("\n");
var errorLine = lines[line - 1];
errorMsg += errorLine + "\n";
// console.log(errorLine);
for (var i=0; i<column; i++) errorMsg += " ";
var start = offendingToken.start;
var stop = offendingToken.stop;
if ( start>=0 && stop>=0 ) {
for (var i=start; i<=stop; i++) errorMsg += "^";
}
// console.log(editor);
this.markError(editor, line-1, start, stop+1, "CodeMirror-invalidToken");
// editor.markText(Pos(line, start), Pos(line, stop + 1),
// {className: "CodeMirror-invalidToken"})
// tokenMarks.push(editor.markText(Pos(line, start), Pos(line, stop + 1),
// {className: "CodeMirror-invalidToken"}));
// console.log(tokenMarks);
}
markError(editor, line, start, end, style) {
var mark = editor.markText(Pos(line, start), Pos(line, end), {className: style});
tokenMarks.push(mark);
// console.log("marked!");
}
}
var parse = function () {
// Attempt to parse the text in the input text area.
//var input = document.getElementById("input").value;
if (tokenMarks.length) {
editor.operation(function() {
for (var i = 0; i < tokenMarks.length; i++) tokenMarks[i].clear();
});
tokenMakrs = [];
}
//solution
var solution = $("#solution").html().replace(">", ">");
// console.log(`solution: ${solution}`);
var sol_lexer = new VenbraceLexer(new antlr4.InputStream(solution));
var sol_stream = new antlr4.CommonTokenStream(sol_lexer);
sol_stream.fill(); //test code
var sol_parser = new VenbraceParser(sol_stream);
var sol_tokens = sol_parser.test_program().tokens;
var sol_tokens_count = getSolutionTokens(sol_tokens);
console.log("solution tokens:");
console.log(sol_tokens_count);
//input
var input = editor.getValue();
// console.log(input);
var cstream = new antlr4.InputStream(input);
var lexer = new VenbraceLexer(cstream);
var tstream = new antlr4.CommonTokenStream(lexer);
tstream.fill(); //test code
var rawTokens = tstream.tokens.filter(function (t) {return t.type !== antlr4.Token.EOF;})
var lexTokens = preprocessing(rawTokens); //type: CommonToken
var parser = new VenbraceParser(tstream);
parser.buildParseTrees = true;
parser.removeErrorListeners();
parser.addErrorListener(new VenbraceErrorListener());
var dom = undefined;
// var xml = undefined;
// var tokens = undefined;
// var valueTokens = undefined;
var visit = undefined;
var parserErrors = [];
if (lexer.getErrors().length === 0) {
// try {
// console.log(parseTokens); // will be empty if parse fails
var tokenCount = countTokens(lexTokens);
console.log("tokens from input:");
dom = parser.test_program();
// xml = dom.elt;
var parseTokens = dom.tokens;
console.log(tokenCount);
var tokenCheckResult = tokenCheck(tokenCount, sol_tokens_count);
console.log("compare input tokens with solution tokens:");
console.log(tokenCheckResult);
// }
// catch (e) {
// // parserErrors = parser.getErrors();
// // console.log(parserErrors);
// console.log("before error");
// throw(e);
// console.log("im here");
// // console.log(parseErrors);
// }
/** OLD CODE FOR TESTING XML **/
// parserErrors = parser.getErrors();
// try {
// console.log("Try to parse as expr.");
// // Try to parse as expression first
// dom = parser.expr_block();
// console.log("Parsing as expr succeeded!");
// console.log("Parsing succeeded!");
// xml = dom.elt;
// } catch (expErr) {
// //TODO: write my own ErrorReportStrategy
// console.log("Parsing as expr failed!");
// // console.log(expErr);
// }
// try {
// console.log("Try to parse as statement.");
// dom = parser.stat_block();
// console.log("Parsing as statement succeeded!");
// console.log("Parsing succeeded!");
// xml = dom.elt;
// } catch (statError) {
// console.log("Parsing as statement failed!");
// console.log(statError);
// }
// try {
// console.log("Try to parse as decl.");
// dom = parser.decl_block();
// console.log("Parsing as decl succeeded!");
// console.log("Parsing succeeded!");
// xml = dom.elt;
// } catch (declError) {
// console.log("Parsing as decl failed!");
// console.log(declError);
// }
// console.log("Parsing succeeded!");
// xml = dom.elt;
/* END OF OLD CODE */
// console.log("Number of parser errors is " + parserErrors.length);
// trace tokens from the parse tree
// dom.accept(new Visitor());
if (parserErrors.length === 0) {
if (dom === undefined) {
console.log("Unable to parse due to parsing errors.");
document.getElementById("output").innerHTML = "Parsing failed.";
} else {
// document.getElementById("output").innerHTML = escapeHTML(domToPrettyText(xml));
document.getElementById("output").innerHTML = escapeHTML(printTokens(parseTokens));
}
} else {
console.log("Parser errors:");
parserErrors.forEach(function(error){
console.log(error);
});
}
} else {
console.log("Lexer errors:");
lexer.getErrors().forEach(function(error){
console.log(error);
});
}
}
function preprocessing(tokens) {
var result = [];
for (var i=0; i<tokens.length; i++) {
var t = tokens[i].clone();
////console.log(t);
if (t.type == 122 && i > 0) { // t is NEG_NUM
var prev = tokens[i-1];
if (prev.type == 121
|| prev.type == 122
|| prev.type == 124
|| prev.type == 7) { // prev is NUM, NEG_NUM, ID, or RPAREN (end of an expr)
var op = t.clone();
op.text = "-";
op.type = 63;
op.stop = op.start;
t.text = t.text.substring(1);
t.type = 121;
t.start = t.start + 1;
t.column = t.column + 1;
result.push(op);
}
}
result.push(t);
}
return result;
}
function getSolutionTokens(ts) {
var result = {"required": {}, "optional": {}};
for (var i = 0; i < ts.length; i++) {
var t = ts[i];
var t_text = t.text;
if (t.optional) {
if (result.optional[t_text]) {
result.optional[t_text] = result.optional[t_text] + 1;
} else result.optional[t_text] = 1;
} else {
if (result.required[t_text]) {
result.required[t_text] = result.required[t_text] + 1;
} else result.required[t_text] = 1;
}
}
return result;
}
function countTokens(ts) {
var result = {};
for (var i = 0; i < ts.length; i++) {
var t = ts[i].text;
if (result[t]) {
result[t] = result[t] + 1;
} else result[t] = 1;
}
return result;
}
function tokenCheck(input, solution) {
var result = {"missing": {}, "unexpected": {}};
for (var t in input) {
var count = input[t];
if (!(solution.required[t])) {
if (!(solution.optional[t])) {
result.unexpected[t] = count;
} else {
if (count > solution.optional[t]) {
result.unexpected[t] = count - solution.optional[t];
}
}
} else {
if (count < solution.required[t]) {
result.missing[t] = solution.required[t] - count;
} else if (count > solution.required[t]) {
if (!(solution.optional[t])) {
result.unexpected[t] = count - solution.required[t];
} else {
var delta = count - solution.required[t] - solution.optional[t];
if (delta > 0) {
result.unexpected[t] = delta;
}
}
}
}
}
for (var r in solution.required) {
if (!(input[r])) {
result.missing[r] = solution.required[r];
}
}
return result;
}
var printTokens = function(ts) {
if (!ts) return "";
var result = "";
for (var i = 0; i < ts.length; i++) {
var t = ts[i];
var optional = (t.optional ? "(optional)" : "");
var text = t.text;
var line = t.line;
var col = t.column;
var str = `token: ${text}, pos: (${line}, ${col}) ${optional}\n`;
result += str;
}
return result;
}
// From Blockly core xml.js
/**
* Converts a DOM structure into properly indented text.
* @param {!Element} dom A tree of XML elements.
* @return {string} Text representation.
*/
var domToPrettyText = function(dom) {
// This function is not guaranteed to be correct for all XML.
// But it handles the XML that Blockly generates.
var blob = domToText(dom);
// Place every open and close tag on its own line.
var lines = blob.split('<');
// Indent every line.
var indent = '';
for (var x = 1; x < lines.length; x++) {
var line = lines[x];
if (line[0] == '/') {
indent = indent.substring(2);
}
lines[x] = indent + '<' + line;
if (line[0] != '/' && line.slice(-2) != '/>') {
indent += ' ';
}
}
// Pull simple tags back together.
// E.g. <foo></foo>
var text = lines.join('\n');
text = text.replace(/(<(\w+)\b[^>]*>[^\n]*)\n *<\/\2>/g, '$1</$2>');
// Trim leading blank line.
return text.replace(/^\n/, '');
};
/**
* Converts a DOM structure into plain text.
* Currently the text format is fairly ugly: all one line with no whitespace.
* @param {!Element} dom A tree of XML elements.
* @return {string} Text representation.
*/
var domToText = function(dom) {
var oSerializer = new XMLSerializer();
return oSerializer.serializeToString(dom);
};
// From http://forums.asp.net/t/1151879.aspx?HttpUtility+HtmlEncode+in+javaScript+
function escapeHTML (str) {
var div = document.createElement('div');
var text = document.createTextNode(str);
div.appendChild(text);
return div.innerHTML;
}
// End local JavaScript for this page
</script>
</html>