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96cd1faf6b
Regexes like /[/]/ are ES5 compliant and supported by Node and browsers. Needed to parse prettify.js and SockJS!
739 lines
31 KiB
JavaScript
739 lines
31 KiB
JavaScript
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(function() {
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var parserTestOptions = { includeComments: true };
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var allNodeNames = [
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";",
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"array",
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"assignment",
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"binary",
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"blockStmnt",
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"boolean",
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"bracket",
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"breakStmnt",
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"call",
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"case",
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"catch",
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"comma",
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"comment",
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"continueStmnt",
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"debuggerStmnt",
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"default",
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"doStmnt",
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"dot",
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"emptyStmnt",
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"expressionStmnt",
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"finally",
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"forInSpec",
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"forSpec",
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"forStmnt",
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"forVarInSpec",
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"forVarSpec",
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"functionDecl",
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"functionExpr",
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"idPropName",
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"identifier",
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"ifStmnt",
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"labelStmnt",
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"new",
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"newcall",
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"nil",
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"null",
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"numPropName",
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"number",
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"object",
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"parens",
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"postfix",
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"program",
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"prop",
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"regex",
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"returnStmnt",
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"strPropName",
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"string",
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"switchStmnt",
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"ternary",
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"this",
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"throwStmnt",
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"tryStmnt",
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"unary",
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"varDecl",
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"varStmnt",
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"whileStmnt",
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"withStmnt"
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];
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var allNodeNamesSet = {};
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_.each(allNodeNames, function (n) { allNodeNamesSet[n] = true; });
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var makeTester = function (test) {
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return {
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// Parse code and make sure it matches expectedTreeString.
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goodParse: function (code, expectedTreeString, regexTokenHints) {
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var expectedTree = ParseNode.unstringify(expectedTreeString);
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// first use lexer to collect all tokens
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var lexer = new JSLexer(code);
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var allTokensInOrder = [];
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while (! lexer.next().isEOF()) {
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var lex = lexer.lastLexeme;
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if (lex.isError())
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test.fail("Lexer error at " + lex.startPos());
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if (lex.isToken())
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allTokensInOrder.push(lex);
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if (regexTokenHints && regexTokenHints[allTokensInOrder.length])
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lexer.divisionPermitted = false;
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}
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var parser = new JSParser(code, parserTestOptions);
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var actualTree = parser.getSyntaxTree();
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var nextTokenIndex = 0;
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var check = function (tree) {
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if (tree instanceof ParseNode) {
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// This is a NODE (non-terminal).
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var nodeName = tree.name;
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if (! (nodeName && typeof nodeName === "string" &&
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allNodeNamesSet[nodeName] === true))
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test.fail("Not a node name: " + nodeName);
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_.each(tree.children, check);
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} else if (typeof tree === 'object' &&
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typeof tree.text === 'function') {
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// This is a TOKEN (terminal).
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// Make sure we are visiting every token once, in order.
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// Make an exception for any comment lexemes present,
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// because we couldn't know whether to include them in
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// allTokensInOrder.
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if (tree.type() !== "COMMENT") {
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if (nextTokenIndex >= allTokensInOrder.length)
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test.fail("Too many tokens: " + (nextTokenIndex + 1));
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var referenceToken = allTokensInOrder[nextTokenIndex++];
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if (tree.text() !== referenceToken.text())
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test.fail(tree.text() + " !== " + referenceToken.text());
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if (tree.startPos() !== referenceToken.startPos())
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test.fail(tree.startPos() + " !== " + referenceToken.startPos());
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if (code.substring(tree.startPos(), tree.endPos()) !== tree.text())
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test.fail("Didn't see " + tree.text() + " at " + tree.startPos() +
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" in " + code);
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}
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} else {
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test.fail("Unknown tree part: " + tree);
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}
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};
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check(actualTree);
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if (nextTokenIndex !== allTokensInOrder.length)
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test.fail("Too few tokens: " + nextTokenIndex);
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test.equal(parser.pos, code.length);
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test.equal(ParseNode.stringify(actualTree),
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ParseNode.stringify(expectedTree), code);
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},
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// Takes code with part of it surrounding with backticks.
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// Removes the two backtick characters, tries to parse the code,
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// and then asserts that there was a tokenization-level error,
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// with the part that was between the backticks called out as
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// the bad token.
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//
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// For example, the test "123`@`" will try to parse "123@" and
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// assert that a tokenization error occurred at '@'.
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badToken: function (code) {
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var constructMessage = function (pos, text) {
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var nicePos = JSLexer.prettyOffset(code, pos);
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return "Bad token at " + nicePos + ", text `" + text + "`";
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};
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var pos = code.indexOf('`');
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var text = code.match(/`(.*?)`/)[1];
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code = code.replace(/`/g, '');
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var parsed = false;
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var error = null;
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try {
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var tree = new JSParser(code, parserTestOptions).getSyntaxTree();
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parsed = true;
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} catch (e) {
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error = e;
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}
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test.isFalse(parsed);
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test.isTrue(error);
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test.equal(error.message, constructMessage(pos, text));
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},
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// Takes code with a backtick-quoted string embedded in it.
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// Removes the backticks and their contents, tries to parse the code,
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// and then asserts that there was a parse error at the location
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// where the backtick-quoted string was embedded. The embedded
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// string must match whatever the error message says was "expected".
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//
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// For example, the test "{`statement`" will try to parse the code
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// "{" and then assert that an error occured at the end of the string
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// saying "Expected statement". The test "1 `semicolon`2" will try
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// to parse "1 2" and assert that the error "Expected semicolon"
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// appeared after the space and before the 2.
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//
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// A second backtick-quoted string is used as the "found" token
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// in the error message.
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badParse: function (code) {
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var constructMessage = function (whatExpected, pos, found, after) {
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return "Expected " + whatExpected + (after ? " after " + after : "") +
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" at " + JSLexer.prettyOffset(code, pos) + ", found " + found;
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};
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var pos = code.indexOf('`');
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var backticked = code.match(/`.*?`/g);
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var whatExpected = backticked[0] && backticked[0].slice(1,-1);
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var found = backticked[1] && backticked[1].slice(1, -1);
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code = code.replace(/`.*?`/g, '');
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var parsed = false;
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var error = null;
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var parser = new JSParser(code, parserTestOptions);
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try {
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var tree = parser.getSyntaxTree();
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parsed = true;
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} catch (e) {
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error = e;
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}
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test.isFalse(parsed);
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test.isTrue(error);
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if (! parsed && error) {
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var after = parser.oldToken;
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found = (found || parser.newToken);
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test.equal(error.message,
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constructMessage(whatExpected, pos, found, after),
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code);
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}
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}
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};
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};
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Tinytest.add("jsparse - basics", function (test) {
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var tester = makeTester(test);
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tester.goodParse('1', "program(expressionStmnt(number(1) ;()))");
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tester.goodParse('1 + 1', "program(expressionStmnt(binary(number(1) + number(1)) ;()))");
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tester.goodParse('1*2+3*4', "program(expressionStmnt(binary(binary(number(1) * number(2)) + " +
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"binary(number(3) * number(4))) ;()))");
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tester.goodParse('1 + 1;', "program(expressionStmnt(binary(number(1) + number(1)) ;))");
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tester.goodParse('1 + 1;;', "program(expressionStmnt(binary(number(1) + number(1)) ;) emptyStmnt(;))");
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tester.goodParse('', "program()");
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tester.goodParse('\n', "program()");
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tester.goodParse(';;;\n\n;\n', "program(emptyStmnt(;) emptyStmnt(;) emptyStmnt(;) emptyStmnt(;))");
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tester.goodParse('foo', "program(expressionStmnt(identifier(foo) ;()))");
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tester.goodParse('foo();', "program(expressionStmnt(call(identifier(foo) `(` `)`) ;))");
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tester.goodParse('var x = 3', "program(varStmnt(var varDecl(x = number(3)) ;()))");
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tester.goodParse('++x;', "program(expressionStmnt(unary(++ identifier(x)) ;))");
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tester.goodParse('x++;', "program(expressionStmnt(postfix(identifier(x) ++) ;))");
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tester.goodParse(
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'throw new Error',
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"program(throwStmnt(throw new(new identifier(Error)) ;()))");
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tester.goodParse(
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'var x = function () { return 123; };',
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'program(varStmnt(var varDecl(x = functionExpr(function nil() `(` `)` ' +
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'{ returnStmnt(return number(123) ;) })) ;))');
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tester.badParse("var x = `expression`");
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tester.badParse("1 `semicolon`1");
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tester.badParse("1+1`semicolon`:");
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});
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Tinytest.add("jsparse - tokenization errors", function (test) {
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var tester = makeTester(test);
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tester.badToken("123`@`");
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tester.badToken("thisIsATestOf = `'unterminated `\n strings'");
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// make sure newlines aren't quietly included in regex literals
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tester.badToken("var x = `/`a\nb/;");
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tester.badToken("var x = `/`a\\\nb/;");
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tester.badToken("var x = `/`a[\n]b/;");
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});
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Tinytest.add("jsparse - syntax forms", function (test) {
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var tester = makeTester(test);
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var trials = [
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// STATEMENTS
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['1',
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'program(expressionStmnt(number(1) ;()))'],
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['1;;;;2',
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'program(expressionStmnt(number(1) ;) emptyStmnt(;) emptyStmnt(;) emptyStmnt(;) ' +
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'expressionStmnt(number(2) ;()))'],
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['{}',
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'program(blockStmnt({ }))'],
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['{null}',
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'program(blockStmnt({ expressionStmnt(null(null) ;()) }))'],
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['{\nfoo()\nbar();\n}',
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'program(blockStmnt({ expressionStmnt(call(identifier(foo) `(` `)`) ;()) ' +
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'expressionStmnt(call(identifier(bar) `(` `)`) ;) }))'],
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['{{{}}}',
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'program(blockStmnt({ blockStmnt({ blockStmnt({ }) }) }))'],
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['var x = y, z,\n a = b = c;',
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'program(varStmnt(var varDecl(x = identifier(y)) , varDecl(z) , varDecl(a = ' +
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'assignment(identifier(b) = identifier(c))) ;))'],
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['if (x === y);',
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'program(ifStmnt(if `(` binary(identifier(x) === identifier(y)) `)` emptyStmnt(;)))'],
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['if (z) return',
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'program(ifStmnt(if `(` identifier(z) `)` returnStmnt(return nil() ;())))'],
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['if (a) b; else c',
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'program(ifStmnt(if `(` identifier(a) `)` expressionStmnt(identifier(b) ;) else ' +
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'expressionStmnt(identifier(c) ;())))'],
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['if (n === 1) { foo(); } else if (n === 2) { bar(); } else { baz(); }',
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'program(ifStmnt(if `(` binary(identifier(n) === number(1)) `)` blockStmnt(' +
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'{ expressionStmnt(call(identifier(foo) `(` `)`) ;) }) else ifStmnt(' +
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'if `(` binary(identifier(n) === number(2)) `)` blockStmnt(' +
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'{ expressionStmnt(call(identifier(bar) `(` `)`) ;) }) else blockStmnt(' +
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'{ expressionStmnt(call(identifier(baz) `(` `)`) ;) }))))'],
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['while (false);',
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'program(whileStmnt(while `(` boolean(false) `)` emptyStmnt(;)))'],
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['while (/foo/.test(bar.baz)) {\n bar = bar.baz;\n}',
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'program(whileStmnt(while `(` call(dot(regex(/foo/) . test) `(` ' +
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'dot(identifier(bar) . baz) `)`) `)` blockStmnt({ expressionStmnt(' +
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'assignment(identifier(bar) = dot(identifier(bar) . baz)) ;) })))'],
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['while (false) while (false);',
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'program(whileStmnt(while `(` boolean(false) `)` ' +
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'whileStmnt(while `(` boolean (false) `)` emptyStmnt(;))))'],
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['do a; while (b);',
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'program(doStmnt(do expressionStmnt(identifier(a) ;) while `(` identifier(b) `)` ;))'],
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['do { x-- } while (x);',
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'program(doStmnt(do blockStmnt({ expressionStmnt(postfix(identifier(x) --) ;()) }) ' +
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'while `(` identifier(x) `)` ;))'],
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['do a\n while (b)\n x++',
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'program(doStmnt(do expressionStmnt(identifier(a) ;()) while `(` identifier(b) `)` ;()) ' +
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'expressionStmnt(postfix(identifier(x) ++) ;()))'],
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["for(;;);",
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"program(forStmnt(for `(` forSpec(nil() ; nil() ; nil()) `)` emptyStmnt(;)))"],
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["for(x in y);",
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"program(forStmnt(for `(` forInSpec(identifier(x) in identifier(y)) `)` emptyStmnt(;)))"],
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["for(var x in y);",
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"program(forStmnt(for `(` forVarInSpec(var varDecl(x) in identifier(y)) `)` emptyStmnt(;)))"],
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["for(var x;;);",
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"program(forStmnt(for `(` forVarSpec(var varDecl(x) ; nil() ; nil()) `)` emptyStmnt(;)))"],
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["for(var i=0;i<N;i++) {}",
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"program(forStmnt(for `(` forVarSpec(var varDecl(i = number(0)) ; " +
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"binary(identifier(i) < identifier(N)) ; postfix(identifier(i) ++)) `)` blockStmnt({ })))"],
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["for (var x=3 in y);",
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"program(forStmnt(for `(` forVarInSpec(var varDecl(x = number(3)) in identifier(y)) `)` " +
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"emptyStmnt(;)))"],
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["for (x.foo in y);",
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"program(forStmnt(for `(` forInSpec(dot(identifier(x) . foo) in identifier(y)) `)` emptyStmnt(;)))"],
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["return",
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"program(returnStmnt(return nil() ;()))"],
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["return;",
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"program(returnStmnt(return nil() ;))"],
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["return null",
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"program(returnStmnt(return null(null) ;()))"],
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["return null;",
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"program(returnStmnt(return null(null) ;))"],
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["return\n1+1",
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"program(returnStmnt(return nil() ;()) expressionStmnt(binary(number(1) + number(1)) ;()))"],
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["return 1\n +1",
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"program(returnStmnt(return binary(number(1) + number(1)) ;()))"],
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["continue",
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"program(continueStmnt(continue nil() ;()))"],
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["continue foo",
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"program(continueStmnt(continue foo ;()))"],
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["continue foo;",
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"program(continueStmnt(continue foo ;))"],
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["continue\n foo;",
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"program(continueStmnt(continue nil() ;()) expressionStmnt(identifier(foo) ;))"],
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["break",
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"program(breakStmnt(break nil() ;()))"],
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["break foo",
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"program(breakStmnt(break foo ;()))"],
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["break foo;",
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"program(breakStmnt(break foo ;))"],
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["break\n foo;",
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"program(breakStmnt(break nil() ;()) expressionStmnt(identifier(foo) ;))"],
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["throw e;",
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"program(throwStmnt(throw identifier(e) ;))"],
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["throw e",
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"program(throwStmnt(throw identifier(e) ;()))"],
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["throw new Error;",
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"program(throwStmnt(throw new(new identifier(Error)) ;))"],
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["with(x);",
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"program(withStmnt(with `(` identifier(x) `)` emptyStmnt(;)))"],
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["with(a=b) {}",
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"program(withStmnt(with `(` assignment(identifier(a) = identifier(b)) `)` blockStmnt({ })))"],
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["switch(x) {}",
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"program(switchStmnt(switch `(` identifier(x) `)` { }))"],
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["switch(x) {case 1:case 2:case 3:default:case 4:}",
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"program(switchStmnt(switch `(` identifier(x) `)` { " +
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"case(case number(1) :) case(case number(2) :) case(case number(3) :) " +
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"default(default :) case(case number(4) :) }))"],
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["switch(x) {\ncase 1:\n return\ncase 2:\ncase 3:\n throw e}",
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"program(switchStmnt(switch `(` identifier(x) `)` { " +
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"case(case number(1) : returnStmnt(return nil() ;())) " +
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"case(case number(2) :) case(case number(3) : " +
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"throwStmnt(throw identifier(e) ;())) }))"],
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["switch(x) {default:;}",
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"program(switchStmnt(switch `(` identifier(x) `)` { default(default : emptyStmnt(;)) }))"],
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["try {} catch (e) {} finally {}",
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"program(tryStmnt(try blockStmnt({ }) catch(catch `(` e `)` blockStmnt({ })) " +
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"finally(finally blockStmnt({ }))))"],
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["try {} finally {}",
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"program(tryStmnt(try blockStmnt({ }) nil() finally(finally blockStmnt({ }))))"],
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["try {} catch (e) {}",
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"program(tryStmnt(try blockStmnt({ }) catch(catch `(` e `)` blockStmnt({ })) nil()))"],
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["a:;",
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"program(labelStmnt(a : emptyStmnt(;)))"],
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["{x:1}",
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"program(blockStmnt({ labelStmnt(x : expressionStmnt(number(1) ;())) }))"],
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["{x:y:z:1}",
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"program(blockStmnt({ labelStmnt(x : labelStmnt(y : " +
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"labelStmnt(z : expressionStmnt(number(1) ;())))) }))"],
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[";;foo:\nfor(;;);",
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"program(emptyStmnt(;) emptyStmnt(;) labelStmnt(foo : " +
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"forStmnt(for `(` forSpec(nil() ; nil() ; nil()) `)` emptyStmnt(;))))"],
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["debugger",
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"program(debuggerStmnt(debugger ;()))"],
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["debugger;",
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"program(debuggerStmnt(debugger ;))"],
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["function foo() {}",
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"program(functionDecl(function foo `(` `)` { }))"],
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["function foo() {function bar() {}}",
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"program(functionDecl(function foo `(` `)` { functionDecl(function bar `(` `)` { }) }))"],
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[";;function f() {};;",
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"program(emptyStmnt(;) emptyStmnt(;) functionDecl(function f `(` `)` { }) " +
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"emptyStmnt(;) emptyStmnt(;))"],
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["function foo(a,b,c) {}",
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"program(functionDecl(function foo `(` a , b , c `)` { }))"],
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// EXPRESSIONS
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["null + this - 3 + true",
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"program(expressionStmnt(binary(binary(binary(null(null) + this(this)) - " +
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"number(3)) + boolean(true)) ;()))"],
|
|
["+.5",
|
|
"program(expressionStmnt(unary(+ number(.5)) ;()))"],
|
|
["a1a1a",
|
|
"program(expressionStmnt(identifier(a1a1a) ;()))"],
|
|
["/abc/mig",
|
|
"program(expressionStmnt(regex(/abc/mig) ;()))"],
|
|
["/[]/",
|
|
"program(expressionStmnt(regex(/[]/) ;()))"],
|
|
["/[/]/",
|
|
"program(expressionStmnt(regex(/[/]/) ;()))"],
|
|
["/[[/]/",
|
|
"program(expressionStmnt(regex(/[[/]/) ;()))"],
|
|
["/.\\/[a//b]\\[\\][[\\d/]/",
|
|
"program(expressionStmnt(regex(/.\\/[a//b]\\[\\][[\\d/]/) ;()))"],
|
|
["a / /b/mgi / c",
|
|
"program(expressionStmnt(binary(binary(identifier(a) / " +
|
|
"regex(/b/mgi)) / identifier(c)) ;()))"],
|
|
["'a' + \"\" + \"b\" + '\\''",
|
|
"program(expressionStmnt(binary(binary(binary(string('a') + string(\"\")) + " +
|
|
"string(\"b\")) + string('\\'')) ;()))"],
|
|
["_ + x0123 + $",
|
|
"program(expressionStmnt(binary(binary(identifier(_) + " +
|
|
"identifier(x0123)) + identifier($)) ;()))"],
|
|
["if ((x = 1)) return ((1+2))*((1<<2));",
|
|
"program(ifStmnt(if `(` parens(`(` assignment(identifier(x) = number(1)) `)`) " +
|
|
"`)` returnStmnt(return binary(parens(`(` parens(`(` binary(number(1) + " +
|
|
"number(2)) `)`) `)`) * parens(`(` parens(`(` binary(number(1) << number(2)) " +
|
|
"`)`) `)`)) ;)))"],
|
|
["[];",
|
|
"program(expressionStmnt(array([ ]) ;))"],
|
|
["[,,,];",
|
|
"program(expressionStmnt(array([ , , , ]) ;))"],
|
|
["[(1,2),,3];",
|
|
"program(expressionStmnt(array([ parens(`(` comma(number(1) , " +
|
|
"number(2)) `)`) , , number(3) ]) ;))"],
|
|
["({});",
|
|
"program(expressionStmnt(parens(`(` object({ }) `)`) ;))"],
|
|
["({1:1});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(numPropName(1) : number(1)) }) `)`) ;))"],
|
|
["({x:true});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(x) : boolean(true)) }) `)`) ;))"],
|
|
["({'a':b, c:'d', 1:null});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(strPropName('a') : " +
|
|
"identifier(b)) , prop(idPropName(c) : string('d')) , prop(numPropName(1) " +
|
|
": null(null)) }) `)`) ;))"],
|
|
["(function () {});",
|
|
"program(expressionStmnt(parens(`(` functionExpr(function nil() `(` `)` { }) `)`) ;))"],
|
|
["(function foo() {});",
|
|
"program(expressionStmnt(parens(`(` functionExpr(function foo `(` `)` { }) `)`) ;))"],
|
|
["x = function () {}.y;",
|
|
"program(expressionStmnt(assignment(identifier(x) = dot(functionExpr(" +
|
|
"function nil() `(` `)` { }) . y)) ;))"],
|
|
["(function (a) {})",
|
|
"program(expressionStmnt(parens(`(` functionExpr(function nil() " +
|
|
"`(` a `)` { }) `)`) ;()))"],
|
|
["(function (a,b,c) {})",
|
|
"program(expressionStmnt(parens(`(` functionExpr(function nil() `(` " +
|
|
"a , b , c `)` { }) `)`) ;()))"],
|
|
["foo.bar.baz;",
|
|
"program(expressionStmnt(dot(dot(identifier(foo) . bar) . baz) ;))"],
|
|
["foo[bar,bar][baz].qux[1+1];",
|
|
"program(expressionStmnt(bracket(dot(bracket(bracket(identifier(foo) " +
|
|
"[ comma(identifier(bar) , identifier(bar)) ]) [ identifier(baz) ]) . qux) " +
|
|
"[ binary(number(1) + number(1)) ]) ;))"],
|
|
["new new a.b.c[d]",
|
|
"program(expressionStmnt(new(new new(new bracket(dot(dot(identifier(a) " +
|
|
". b) . c) [ identifier(d) ]))) ;()))"],
|
|
["new new a.b.c[d]()",
|
|
"program(expressionStmnt(new(new newcall(new " +
|
|
"bracket(dot(dot(identifier(a) . b) . c) [ identifier(d) ]) `(` `)`)) ;()))"],
|
|
["new new a.b.c[d]()()",
|
|
"program(expressionStmnt(newcall(new newcall(new " +
|
|
"bracket(dot(dot(identifier(a) . b) . c) [ identifier(d) ]) `(` `)`) `(` `)`) ;()))"],
|
|
["new foo(x).bar(y)",
|
|
"program(expressionStmnt(call(dot(newcall(new identifier(foo) `(` " +
|
|
"identifier(x) `)`) . bar) `(` identifier(y) `)`) ;()))"],
|
|
["new new foo().bar",
|
|
"program(expressionStmnt(new(new dot(newcall(new identifier(foo) `(` `)`) . bar)) ;()))"],
|
|
["delete void typeof - + ~ ! -- ++ x;",
|
|
"program(expressionStmnt(unary(delete unary(void unary(typeof unary(- unary(+ " +
|
|
"unary(~ unary(! unary(-- unary(++ identifier(x)))))))))) ;))"],
|
|
["x++ + ++y",
|
|
"program(expressionStmnt(binary(postfix(identifier(x) ++) + " +
|
|
"unary(++ identifier(y))) ;()))"],
|
|
["1*2+3*4",
|
|
"program(expressionStmnt(binary(binary(number(1) * number(2)) " +
|
|
"+ binary(number(3) * number(4))) ;()))"],
|
|
["a*b/c%d+e-f<<g>>h>>>i<j>k<=l>=m instanceof n in o==p!=q===r!==s&t^u|v&&w||x",
|
|
"program(expressionStmnt(binary(binary(binary(binary(binary(binary(binary(" +
|
|
"binary(binary(binary(binary(binary(binary(binary(binary(binary(binary(binary(" +
|
|
"binary(binary(binary(binary(binary(identifier(a) * identifier(b)) / " +
|
|
"identifier(c)) % identifier(d)) + identifier(e)) - identifier(f)) << identifier(g)) " +
|
|
">> identifier(h)) >>> identifier(i)) < identifier(j)) > identifier(k)) <= " +
|
|
"identifier(l)) >= identifier(m)) instanceof identifier(n)) in identifier(o)) == " +
|
|
"identifier(p)) != identifier(q)) === identifier(r)) !== identifier(s)) & " +
|
|
"identifier(t)) ^ identifier(u)) | identifier(v)) && identifier(w)) || " +
|
|
"identifier(x)) ;()))"],
|
|
["a||b&&c|d^e&f!==g===h!=i==j in k instanceof l>=m<=n<o<p>>>q>>r<<s-t+u%v/w*x",
|
|
"program(expressionStmnt(binary(identifier(a) || binary(identifier(b) && " +
|
|
"binary(identifier(c) | binary(identifier(d) ^ binary(identifier(e) & " +
|
|
"binary(binary(binary(binary(identifier(f) !== identifier(g)) === identifier(h)) " +
|
|
"!= identifier(i)) == binary(binary(binary(binary(binary(binary(identifier(j) in " +
|
|
"identifier(k)) instanceof identifier(l)) >= identifier(m)) <= identifier(n)) < " +
|
|
"identifier(o)) < binary(binary(binary(identifier(p) >>> identifier(q)) >> " +
|
|
"identifier(r)) << binary(binary(identifier(s) - identifier(t)) + " +
|
|
"binary(binary(binary(identifier(u) % identifier(v)) / identifier(w)) * " +
|
|
"identifier(x))))))))))) ;()))"],
|
|
["a?b:c",
|
|
"program(expressionStmnt(ternary(identifier(a) ? identifier(b) : " +
|
|
"identifier(c)) ;()))"],
|
|
["1==2?3=4:5=6",
|
|
"program(expressionStmnt(ternary(binary(number(1) == number(2)) ? " +
|
|
"assignment(number(3) = number(4)) : assignment(number(5) = number(6))) ;()))"],
|
|
["a=b,c=d",
|
|
"program(expressionStmnt(comma(assignment(identifier(a) = identifier(b)) , " +
|
|
"assignment(identifier(c) = identifier(d))) ;()))"],
|
|
["a=b=c=d",
|
|
"program(expressionStmnt(assignment(identifier(a) = assignment(identifier(b) " +
|
|
"= assignment(identifier(c) = identifier(d)))) ;()))"],
|
|
["x[0]=x[1]=true",
|
|
"program(expressionStmnt(assignment(bracket(identifier(x) [ number(0) ]) = " +
|
|
"assignment(bracket(identifier(x) [ number(1) ]) = boolean(true))) ;()))"],
|
|
["a*=b/=c%=d+=e-=f<<=g>>=h>>>=i&=j^=k|=l",
|
|
"program(expressionStmnt(assignment(identifier(a) *= assignment(identifier(b) " +
|
|
"/= assignment(identifier(c) %= assignment(identifier(d) += " +
|
|
"assignment(identifier(e) -= assignment(identifier(f) <<= " +
|
|
"assignment(identifier(g) >>= assignment(identifier(h) >>>= " +
|
|
"assignment(identifier(i) &= assignment(identifier(j) ^= " +
|
|
"assignment(identifier(k) |= identifier(l)))))))))))) ;()))"],
|
|
["1;\n\n\n\n/* foo */\n// bar\n", // trailing whitespace and comments
|
|
"program(expressionStmnt(number(1) ;) comment(`/* foo */`) comment(`// bar`))"],
|
|
// includeComments option; comments in AST
|
|
["//foo",
|
|
"program(comment(//foo))"],
|
|
["//foo\n",
|
|
"program(comment(//foo))"],
|
|
["/*foo*/",
|
|
"program(comment(/*foo*/))"],
|
|
["/*foo*/\n",
|
|
"program(comment(/*foo*/))"],
|
|
[";\n//foo",
|
|
"program(emptyStmnt(;) comment(//foo))"],
|
|
[";\n/*foo*/",
|
|
"program(emptyStmnt(;) comment(/*foo*/))"],
|
|
[";\n//foo\n;",
|
|
"program(emptyStmnt(;) comment(//foo) emptyStmnt(;))"],
|
|
[";\n/*foo*/\n;",
|
|
"program(emptyStmnt(;) comment(/*foo*/) emptyStmnt(;))"],
|
|
[";\n//foo\n//bar\n;",
|
|
"program(emptyStmnt(;) comment(//foo) comment(//bar) emptyStmnt(;))"],
|
|
[";\n/*foo*/ /*bar*/\n;",
|
|
"program(emptyStmnt(;) comment(/*foo*/) comment(/*bar*/) emptyStmnt(;))"],
|
|
[";//foo\n//bar\n;",
|
|
"program(emptyStmnt(;) comment(//bar) emptyStmnt(;))"],
|
|
[";/*foo*/\n/*bar*/\n;",
|
|
"program(emptyStmnt(;) comment(/*bar*/) emptyStmnt(;))"],
|
|
[";/*foo*//*bar*///baz\n;",
|
|
"program(emptyStmnt(;) emptyStmnt(;))"],
|
|
[";/*foo*//*bar*///baz",
|
|
"program(emptyStmnt(;))"],
|
|
["/*foo*//*bar*///baz",
|
|
"program(comment(/*foo*/) comment(/*bar*/) comment(//baz))"],
|
|
["//foo\n//bar\nfunction aaa() {}\nfunction bbb() {}",
|
|
"program(comment(//foo) comment(//bar) functionDecl(function aaa `(` `)` { }) " +
|
|
"functionDecl(function bbb `(` `)` { }))"],
|
|
// comments don't interfere with parse
|
|
["if (true)\n//comment\nfoo();",
|
|
"program(ifStmnt(if `(` boolean(true) `)` " +
|
|
"expressionStmnt(call(identifier(foo) `(` `)`) ;)))"],
|
|
// bare keywords allowed in property access and object literal
|
|
["foo.return();",
|
|
"program(expressionStmnt(call(dot(identifier(foo) . return) `(` `)`) ;))"],
|
|
["foo.true();",
|
|
"program(expressionStmnt(call(dot(identifier(foo) . true) `(` `)`) ;))"],
|
|
["foo.null();",
|
|
"program(expressionStmnt(call(dot(identifier(foo) . null) `(` `)`) ;))"],
|
|
["({true:3})",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(true) : number(3)) }) `)`) ;()))"],
|
|
["({null:3})",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(null) : number(3)) }) `)`) ;()))"],
|
|
["({if:3})",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(if) : number(3)) }) `)`) ;()))"],
|
|
// ES5 line continuations in string literals
|
|
["var x = 'a\\\nb\\\nc';",
|
|
"program(varStmnt(var varDecl(x = string(`'a\\\nb\\\nc'`)) ;))"],
|
|
// ES5 trailing comma in object literal
|
|
["({});",
|
|
"program(expressionStmnt(parens(`(` object({ }) `)`) ;))"],
|
|
["({x:1});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(x) : number(1)) }) `)`) ;))"],
|
|
["({x:1,});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(x) : number(1)) , }) `)`) ;))"],
|
|
["({x:1,y:2});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(x) : number(1)) , " +
|
|
"prop(idPropName(y) : number(2)) }) `)`) ;))"],
|
|
["({x:1,y:2,});",
|
|
"program(expressionStmnt(parens(`(` object({ prop(idPropName(x) : number(1)) , " +
|
|
"prop(idPropName(y) : number(2)) , }) `)`) ;))"]
|
|
];
|
|
_.each(trials, function (tr) {
|
|
tester.goodParse(tr[0], tr[1]);
|
|
});
|
|
});
|
|
|
|
Tinytest.add("jsparse - bad parses", function (test) {
|
|
var tester = makeTester(test);
|
|
// string between backticks is pulled out and becomes what's "expected"
|
|
// at that location, according to the correct error message
|
|
var trials = [
|
|
'{`statement`',
|
|
'if (`expression`)',
|
|
'if `(`else',
|
|
'var`varDecl`;',
|
|
'while (`expression`);',
|
|
'while`(`;',
|
|
'do a `semicolon`while b;',
|
|
'do a\n while `(`b;',
|
|
'1 `semicolon`2',
|
|
'for (`forSpec`);',
|
|
'for (1\n`semicolon`2\n3);',
|
|
'continue `semicolon`1+1;',
|
|
'break `semicolon`1+1;',
|
|
'throw`expression`',
|
|
'throw`expression`;',
|
|
'throw\n`expression`',
|
|
'throw\n`expression``end of line`e',
|
|
'throw `expression`=;',
|
|
'with(`expression`);',
|
|
'switch(`expression`)',
|
|
'switch(x)`{`;',
|
|
'try`block`',
|
|
'try {}`catch`',
|
|
'try {} catch`(`;',
|
|
'try {} catch(e)`block`;',
|
|
'1+1`semicolon`:',
|
|
'{a:`statement`}',
|
|
'function `IDENTIFIER`() {}',
|
|
'foo: `statement`function foo() {}',
|
|
'[`expression`=',
|
|
'[,,`expression`=',
|
|
'({`propertyName`|:3})',
|
|
'({1:2,3`:`})',
|
|
'({1:2,`propertyName`',
|
|
'x.`IDENTIFIER`,',
|
|
'foo;`semicolon`:;',
|
|
'1;`statement`=',
|
|
'a+b`semicolon`=c;',
|
|
'for(1+1 `semicolon`in {});',
|
|
'`statement`=',
|
|
'for(;`expression`var;) {}',
|
|
'({`propertyName`',
|
|
'({`propertyName`,})',
|
|
'({`propertyName`:})',
|
|
'({x`:`})',
|
|
'({x:1,`propertyName`',
|
|
'({x:1,`propertyName`,})',
|
|
'({x:1`,`',
|
|
'({x:1,`propertyName`,y:2})',
|
|
'({x:1,`propertyName`,})',
|
|
'({x:1,y:2`,`:',
|
|
'({x:1,y:2,`propertyName`',
|
|
'({x:1,y:2,`propertyName`:',
|
|
'({x:1,y:2,`propertyName`,})'
|
|
];
|
|
_.each(trials, function (tr) {
|
|
tester.badParse(tr);
|
|
});
|
|
});
|
|
|
|
Tinytest.add("jsparse - regex division ambiguity", function (test) {
|
|
var tester = makeTester(test);
|
|
tester.goodParse("if (e) /f/g;",
|
|
"program(ifStmnt(if `(` identifier(e) `)` expressionStmnt(regex(/f/g) ;)))",
|
|
{4: true});
|
|
tester.goodParse("++/x/.y;",
|
|
"program(expressionStmnt(unary(++ dot(regex(/x/) . y)) ;))",
|
|
{1: true});
|
|
tester.goodParse("x++/2/g;",
|
|
"program(expressionStmnt(binary(binary(postfix(identifier(x) ++) / " +
|
|
"number(2)) / identifier(g)) ;))");
|
|
tester.goodParse("(1+1)/2/g;",
|
|
"program(expressionStmnt(binary(binary(parens(`(` binary(number(1) + " +
|
|
"number(1)) `)`) / " +
|
|
"number(2)) / identifier(g)) ;))");
|
|
tester.goodParse("/x/",
|
|
"program(expressionStmnt(regex(/x/) ;()))");
|
|
});
|
|
|
|
Tinytest.add("jsparse - semicolon insertion", function (test) {
|
|
var tester = makeTester(test);
|
|
// Spec section 7.9.2
|
|
tester.badParse("{ 1 `semicolon`2 } 3");
|
|
tester.goodParse("{ 1\n2 } 3", "program(blockStmnt({ expressionStmnt(number(1) " +
|
|
";()) expressionStmnt(number(2) ;()) }) expressionStmnt(number(3) ;()))");
|
|
tester.badParse("for (a; b\n`semicolon`)");
|
|
tester.goodParse("return\na + b",
|
|
"program(returnStmnt(return nil() ;()) " +
|
|
"expressionStmnt(binary(identifier(a) + identifier(b)) ;()))");
|
|
tester.goodParse("a = b\n++c",
|
|
"program(expressionStmnt(assignment(identifier(a) = identifier(b)) ;())" +
|
|
"expressionStmnt(unary(++ identifier(c)) ;()))");
|
|
tester.badParse("if (a > b)\n`statement`else c = d");
|
|
tester.goodParse("a = b + c\n(d + e).print()",
|
|
"program(expressionStmnt(assignment(identifier(a) = " +
|
|
"binary(identifier(b) + call(dot(call(identifier(c) `(` " +
|
|
"binary(identifier(d) + identifier(e)) `)`) . print) `(` `)`))) ;()))");
|
|
});
|
|
|
|
Tinytest.add("jsparse - comments", function (test) {
|
|
var tester = makeTester(test);
|
|
// newline in multi-line comment makes it into a line break for semicolon
|
|
// insertion purposes
|
|
tester.badParse("1/**/`semicolon`2");
|
|
tester.goodParse("1/*\n*/2",
|
|
"program(expressionStmnt(number(1) ;()) expressionStmnt(number(2) ;()))");
|
|
});
|
|
|
|
Tinytest.add("jsparse - initial lex error", function (test) {
|
|
var doTest = function (code) {
|
|
// this shouldn't throw
|
|
var parser = new JSParser(code, parserTestOptions);
|
|
// this should throw
|
|
try {
|
|
parser.getSyntaxTree();
|
|
test.fail();
|
|
} catch (e) {
|
|
test.isTrue(/^Bad token/.test(e.message), e.message);
|
|
}
|
|
};
|
|
|
|
doTest('/');
|
|
doTest('@');
|
|
});
|
|
|
|
})();
|