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920 lines
30 KiB
JavaScript
920 lines
30 KiB
JavaScript
(function() {
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var global = this;
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/* ===== Helpers ===== */
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global.throws = function(block, exceptionType) {
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var exception = null;
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try {
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block();
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} catch (e) {
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exception = e;
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}
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ok(
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exception !== null,
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exception !== null ? "okay: thrown something" : "failed, nothing thrown"
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);
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if (exception !== null) {
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ok(
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exception instanceof exceptionType,
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exception instanceof exceptionType
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? "okay: thrown " + exceptionType.name
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: "failed, thrown " + exception.name + " instead of " + exceptionType.name
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);
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}
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return exception;
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};
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global.parses = function(parser, input, expected) {
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deepEqual(parser.parse(input), expected);
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};
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global.doesNotParse = function(parser, input) {
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throws(function() { parser.parse(input); }, PEG.Parser.SyntaxError);
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};
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global.doesNotParseWithMessage = function(parser, input, message) {
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var exception = throws(
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function() { parser.parse(input); },
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PEG.Parser.SyntaxError
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);
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if (exception) {
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strictEqual(exception.message, message);
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}
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};
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global.doesNotParseWithPos = function(parser, input, line, column) {
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var exception = throws(
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function() { parser.parse(input); },
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PEG.Parser.SyntaxError
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);
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if (exception) {
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strictEqual(exception.line, line);
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strictEqual(exception.column, column);
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}
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};
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global.grammarParserParses = function(input, expected) {
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global.parses(PEG.grammarParser, input, expected);
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};
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global.grammarParserDoesNotParse = function(input) {
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global.doesNotParse(PEG.grammarParser, input);
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}
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/* ===== PEG.Compiler ===== */
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module("PEG.Compiler");
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test("formatCode joins parts", function() {
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strictEqual(PEG.Compiler.formatCode("foo", "bar"), "foo\nbar");
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});
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test("formatCode interpolates variables", function() {
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strictEqual(
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PEG.Compiler.formatCode("foo", "${bar}", { bar: "baz" }),
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"foo\nbaz"
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);
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throws(function() {
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PEG.Compiler.formatCode("foo", "${bar}");
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}, Error);
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});
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test("formatCode filters variables", function() {
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strictEqual(
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PEG.Compiler.formatCode("foo", "${bar|string}", { bar: "baz" }),
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"foo\n\"baz\""
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);
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throws(function() {
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PEG.Compiler.formatCode("foo", "${bar|eeek}", { bar: "baz" });
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}, Error);
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});
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test("formatCode indents multiline parts", function() {
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strictEqual(
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PEG.Compiler.formatCode("foo", "${bar}", { bar: " baz\nqux" }),
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"foo\n baz\n qux"
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);
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});
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test("generateUniqueIdentifier", function() {
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notStrictEqual(
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PEG.Compiler.generateUniqueIdentifier("prefix"),
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PEG.Compiler.generateUniqueIdentifier("prefix")
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);
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});
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/* ===== PEG ===== */
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module("PEG");
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test("buildParser reports invalid grammar object", function() {
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throws(function() { PEG.buildParser(42); }, PEG.Grammar.GrammarError);
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});
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test("buildParser reports missing start rule", function() {
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throws(function() { PEG.buildParser({}); }, PEG.Grammar.GrammarError);
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});
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test("buildParser allows custom start rule", function() {
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var parser = PEG.buildParser('s: "abcd"', "s");
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parses(parser, "abcd", "abcd");
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});
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/* ===== Generated Parser ===== */
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module("Generated Parser");
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test("literals", function() {
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var parser = PEG.buildParser('start: "abcd"');
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parses(parser, "abcd", "abcd");
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doesNotParse(parser, "");
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doesNotParse(parser, "abc");
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doesNotParse(parser, "abcde");
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doesNotParse(parser, "efgh");
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/*
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* Test that the parsing position moves forward after successful parsing of
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* a literal.
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*/
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var posTestParser = PEG.buildParser('start: "a" "b"');
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parses(posTestParser, "ab", ["a", "b"]);
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});
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test("anys", function() {
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var parser = PEG.buildParser('start: .');
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parses(parser, "a", "a");
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doesNotParse(parser, "");
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doesNotParse(parser, "ab");
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/*
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* Test that the parsing position moves forward after successful parsing of
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* an any.
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*/
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var posTestParser = PEG.buildParser('start: . .');
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parses(posTestParser, "ab", ["a", "b"]);
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});
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test("classes", function() {
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var emptyClassParser = PEG.buildParser('start: []');
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doesNotParse(emptyClassParser, "");
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doesNotParse(emptyClassParser, "a");
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doesNotParse(emptyClassParser, "ab");
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var nonEmptyClassParser = PEG.buildParser('start: [ab-d]');
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parses(nonEmptyClassParser, "a", "a");
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parses(nonEmptyClassParser, "b", "b");
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parses(nonEmptyClassParser, "c", "c");
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parses(nonEmptyClassParser, "d", "d");
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doesNotParse(nonEmptyClassParser, "");
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doesNotParse(nonEmptyClassParser, "ab");
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/*
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* Test that the parsing position moves forward after successful parsing of
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* a class.
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*/
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var posTestParser = PEG.buildParser('start: [ab-d] [ab-d]');
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parses(posTestParser, "ab", ["a", "b"]);
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});
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test("sequences", function() {
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var emptySequenceParser = PEG.buildParser('start: ');
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parses(emptySequenceParser, "", []);
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doesNotParse(emptySequenceParser, "abc");
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var nonEmptySequenceParser = PEG.buildParser('start: "a" "b" "c"');
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parses(nonEmptySequenceParser, "abc", ["a", "b", "c"]);
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doesNotParse(nonEmptySequenceParser, "");
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doesNotParse(nonEmptySequenceParser, "ab");
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doesNotParse(nonEmptySequenceParser, "abcd");
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doesNotParse(nonEmptySequenceParser, "efg");
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/*
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* Test that the parsing position returns after unsuccessful parsing of a
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* sequence.
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*/
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var posTestParser = PEG.buildParser('start: ("a" "b") / "a"');
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parses(posTestParser, "a", "a");
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});
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test("choices", function() {
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var parser = PEG.buildParser('start: "a" / "b" / "c"');
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parses(parser, "a", "a");
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parses(parser, "b", "b");
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parses(parser, "c", "c");
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doesNotParse(parser, "");
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doesNotParse(parser, "ab");
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doesNotParse(parser, "d");
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});
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test("optional expressions", function() {
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var parser = PEG.buildParser('start: "a"?');
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parses(parser, "", "");
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parses(parser, "a", "a");
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});
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test("zero or more expressions", function() {
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var parser = PEG.buildParser('start: "a"*');
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parses(parser, "", []);
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parses(parser, "a", ["a"]);
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parses(parser, "aaa", ["a", "a", "a"]);
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});
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test("one or more expressions", function() {
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var parser = PEG.buildParser('start: "a"+');
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doesNotParse(parser, "");
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parses(parser, "a", ["a"]);
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parses(parser, "aaa", ["a", "a", "a"]);
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});
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test("and predicate", function() {
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var parser = PEG.buildParser('start: "a" &"b" "b"');
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parses(parser, "ab", ["a", "", "b"]);
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doesNotParse(parser, "ac");
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/*
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* Test that the parsing position returns after successful parsing of a
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* predicate is not needed, it is implicit in the tests above.
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*/
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});
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test("not predicate", function() {
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var parser = PEG.buildParser('start: "a" !"b"');
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parses(parser, "a", ["a", ""]);
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doesNotParse(parser, "ab");
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/*
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* Test that the parsing position returns after successful parsing of a
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* predicate.
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*/
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var posTestParser = PEG.buildParser('start: "a" !"b" "c"');
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parses(posTestParser, "ac", ["a", "", "c"]);
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});
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test("rule references", function() {
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var parser = PEG.buildParser([
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'start: static / dynamic',
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'static: "C" / "C++" / "Java" / "C#"',
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'dynamic: "Ruby" / "Python" / "JavaScript"'
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].join("\n"));
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parses(parser, "Java", "Java");
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parses(parser, "Python", "Python");
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});
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test("actions", function() {
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var singleMatchParser = PEG.buildParser(
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'start: "a" { return Array.prototype.slice.call(arguments).join("").toUpperCase(); }'
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);
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parses(singleMatchParser, "a", "A");
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var multiMatchParser = PEG.buildParser(
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'start: "a" "b" "c" { return Array.prototype.slice.call(arguments).join("").toUpperCase(); }'
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);
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parses(multiMatchParser, "abc", "ABC");
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var innerMatchParser = PEG.buildParser(
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'start: "a" ("b" "c" "d" { return Array.prototype.slice.call(arguments).join("").toUpperCase(); }) "e"'
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);
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parses(innerMatchParser, "abcde", ["a", "BCD", "e"]);
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/* Test that the action is not called when its expression does not match. */
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var notAMatchParser = PEG.buildParser(
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'start: "a" { ok(false, "action got called when it should not be"); }'
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);
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doesNotParse(notAMatchParser, "b");
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var variablesParser = PEG.buildParser([
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'start: "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" {',
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' return [$1, $2, $3, $4, $5, $6, $7, $8, $9, $10].join("").toUpperCase();',
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' }'
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].join("\n"));
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parses(variablesParser, "abcdefghij", "ABCDEFGHIJ");
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});
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test("cache", function() {
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/*
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* Should trigger a codepath where the cache is used (for the "a" rule).
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*/
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var parser = PEG.buildParser([
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'start: (a b) / (a c)',
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'a: "a"',
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'b: "b"',
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'c: "c"'
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].join("\n"));
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parses(parser, "ac", ["a", "c"]);
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});
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test("error messages", function() {
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var literalParser = PEG.buildParser('start: "abcd"');
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doesNotParseWithMessage(
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literalParser,
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"",
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'Expected "abcd" but end of input found.'
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);
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doesNotParseWithMessage(
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literalParser,
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"efgh",
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'Expected "abcd" but "e" found.'
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);
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doesNotParseWithMessage(
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literalParser,
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"abcde",
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'Expected end of input but "e" found.'
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);
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var anyParser = PEG.buildParser('start: .');
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doesNotParseWithMessage(
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anyParser,
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"",
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'Expected any character but end of input found.'
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);
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var namedRuleWithLiteralParser = PEG.buildParser('start "digit": [0-9]');
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doesNotParseWithMessage(
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namedRuleWithLiteralParser,
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"a",
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'Expected digit but "a" found.'
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);
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var namedRuleWithAnyParser = PEG.buildParser('start "whatever": .');
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doesNotParseWithMessage(
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namedRuleWithAnyParser,
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"",
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'Expected whatever but end of input found.'
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);
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var namedRuleWithNamedRuleParser = PEG.buildParser([
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'start "digits": digit+',
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'digit "digit": [0-9]'
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].join("\n"));
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doesNotParseWithMessage(
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namedRuleWithNamedRuleParser,
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"",
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'Expected digits but end of input found.'
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);
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var choiceParser = PEG.buildParser('start: "a" / "b" / "c"');
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doesNotParseWithMessage(
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choiceParser,
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"def",
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'Expected "a", "b" or "c" but "d" found.'
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);
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var emptyParser = PEG.buildParser('start: ');
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doesNotParseWithMessage(
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emptyParser,
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"something",
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'Expected nothing but "s" found.'
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);
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});
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test("error positions", function() {
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var parser = PEG.buildParser([
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'start: line (("\\r" / "\\n" / "\\u2028" / "\\u2029")+ line)*',
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'line: digit (" "+ digit)*',
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'digit: [0-9]+ { return $1.join(""); }'
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].join("\n"));
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doesNotParseWithPos(parser, "a", 1, 1);
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doesNotParseWithPos(parser, "1\n2\n\n3\n\n\n4 5 x", 7, 5);
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/* Non-Unix newlines */
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doesNotParseWithPos(parser, "1\rx", 2, 1); // Old Mac
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doesNotParseWithPos(parser, "1\r\nx", 2, 1); // Windows
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doesNotParseWithPos(parser, "1\n\rx", 3, 1); // mismatched
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/* Strange newlines */
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doesNotParseWithPos(parser, "1\u2028x", 2, 1); // line separator
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doesNotParseWithPos(parser, "1\u2029x", 2, 1); // paragraph separator
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});
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/*
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* Following examples are from Wikipedia, see
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* http://en.wikipedia.org/w/index.php?title=Parsing_expression_grammar&oldid=335106938.
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*/
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test("arithmetics", function() {
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/*
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* Value ← [0-9]+ / '(' Expr ')'
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* Product ← Value (('*' / '/') Value)*
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* Sum ← Product (('+' / '-') Product)*
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* Expr ← Sum
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*/
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var parser = PEG.buildParser([
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'Value : [0-9]+ { return parseInt($1.join("")); }',
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' / "(" Expr ")" { return $2; }',
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'Product : Value (("*" / "/") Value)* {',
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' var result = $1;',
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' for (var i = 0; i < $2.length; i++) {',
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' if ($2[i][0] == "*") { result *= $2[i][1]; }',
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' if ($2[i][0] == "/") { result /= $2[i][1]; }',
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' }',
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' return result;',
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' }',
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'Sum : Product (("+" / "-") Product)* {',
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' var result = $1;',
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' for (var i = 0; i < $2.length; i++) {',
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' if ($2[i][0] == "+") { result += $2[i][1]; }',
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' if ($2[i][0] == "-") { result -= $2[i][1]; }',
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' }',
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' return result;',
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' }',
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'Expr : Sum'
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].join("\n"), "Expr");
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/* Test "value" rule. */
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parses(parser, "0", 0);
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parses(parser, "123", 123);
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parses(parser, "(42+43)", 42+43);
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/* Test "product" rule. */
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parses(parser, "42*43", 42*43);
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parses(parser, "42*43*44*45", 42*43*44*45);
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/* Test "sum" rule. */
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parses(parser, "42*43+44*45", 42*43+44*45);
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parses(parser, "42*43+44*45+46*47+48*49", 42*43+44*45+46*47+48*49);
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/* Test "expr" rule. */
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parses(parser, "42+43", 42+43);
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/* Complex test */
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parses(parser, "(1+2)*(3+4)",(1+2)*(3+4));
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});
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test("non-context-free language", function() {
|
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/* The following parsing expression grammar describes the classic
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* non-context-free language { a^n b^n c^n : n >= 1 }:
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*
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* S ← &(A c) a+ B !(a/b/c)
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* A ← a A? b
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* B ← b B? c
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*/
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var parser = PEG.buildParser([
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'S: &(A "c") "a"+ B !("a" / "b" / "c") { return $2.join("") + $3; }',
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'A: "a" A? "b" { return $1 + $2 + $3; }',
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'B: "b" B? "c" { return $1 + $2 + $3; }',
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].join("\n"), "S");
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parses(parser, "abc", "abc");
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parses(parser, "aaabbbccc", "aaabbbccc");
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doesNotParse(parser, "aabbbccc");
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doesNotParse(parser, "aaaabbbccc");
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doesNotParse(parser, "aaabbccc");
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doesNotParse(parser, "aaabbbbccc");
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doesNotParse(parser, "aaabbbcc");
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doesNotParse(parser, "aaabbbcccc");
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});
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test("nested comments", function() {
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/*
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* Begin ← "(*"
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* End ← "*)"
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* C ← Begin N* End
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* N ← C / (!Begin !End Z)
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* Z ← any single character
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*/
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var parser = PEG.buildParser([
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'Begin : "(*"',
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'End : "*)"',
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'C : Begin N* End { return $1 + $2.join("") + $3; }',
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'N : C',
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' / (!Begin !End Z) { return $3; }',
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'Z : .'
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].join("\n"), "C");
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parses(parser, "(**)", "(**)");
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parses(parser, "(*abc*)", "(*abc*)");
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parses(parser, "(*(**)*)", "(*(**)*)");
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parses(
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parser,
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"(*abc(*def*)ghi(*(*(*jkl*)*)*)mno*)",
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"(*abc(*def*)ghi(*(*(*jkl*)*)*)mno*)"
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);
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});
|
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|
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/* ===== Grammar Parser ===== */
|
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module("Grammar Parser");
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with (PEG.Grammar) {
|
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var literalEmpty = new Literal("");
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var literalAbcd = new Literal("abcd");
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var literalEfgh = new Literal("efgh");
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var literalIjkl = new Literal("ijkl");
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var choice = new Choice([literalAbcd, literalEmpty]);
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|
|
var notAbcd = new NotPredicate(literalAbcd);
|
|
var notEfgh = new NotPredicate(literalEfgh);
|
|
var notIjkl = new NotPredicate(literalIjkl);
|
|
|
|
var sequenceEmpty = new Sequence([]);
|
|
var sequenceNots = new Sequence([notAbcd, notEfgh, notIjkl]);
|
|
var sequenceLiterals = new Sequence([literalAbcd, literalEfgh, literalIjkl]);
|
|
|
|
function oneRuleGrammar(expression) {
|
|
return { start: new PEG.Grammar.Rule("start", null, expression) };
|
|
}
|
|
|
|
var simpleGrammar = oneRuleGrammar(new Literal("abcd"));
|
|
|
|
function identifierGrammar(identifier) {
|
|
return oneRuleGrammar(new PEG.Grammar.RuleRef(identifier));
|
|
}
|
|
|
|
function literalGrammar(literal) {
|
|
return oneRuleGrammar(new PEG.Grammar.Literal(literal));
|
|
}
|
|
|
|
function classGrammar(chars) {
|
|
return oneRuleGrammar(new PEG.Grammar.Choice(
|
|
PEG.ArrayUtils.map(
|
|
chars.split(""),
|
|
function(char) { return new PEG.Grammar.Literal(char); }
|
|
)
|
|
));
|
|
}
|
|
|
|
var anyGrammar = oneRuleGrammar(new Any());
|
|
|
|
function actionGrammar(action) {
|
|
return oneRuleGrammar(new PEG.Grammar.Action(new PEG.Grammar.Literal("a"), action));
|
|
}
|
|
|
|
/* Canonical grammar is "a: \"abcd\";\nb: \"efgh\";\nc: \"ijkl\";". */
|
|
test("parses grammar", function() {
|
|
grammarParserParses('a: "abcd"', { a: new Rule("a", null, literalAbcd) });
|
|
grammarParserParses(
|
|
'a: "abcd"\nb: "efgh"\nc: "ijkl"',
|
|
{
|
|
a: new Rule("a", null, literalAbcd),
|
|
b: new Rule("b", null, literalEfgh),
|
|
c: new Rule("c", null, literalIjkl)
|
|
}
|
|
);
|
|
});
|
|
|
|
/* Canonical rule is "a: \"abcd\"". */
|
|
test("parses rule", function() {
|
|
grammarParserParses(
|
|
'start: "abcd" / "efgh" / "ijkl"',
|
|
oneRuleGrammar(new Choice([literalAbcd, literalEfgh, literalIjkl]))
|
|
);
|
|
grammarParserParses(
|
|
'start "start rule": "abcd" / "efgh" / "ijkl"',
|
|
{
|
|
start:
|
|
new Rule(
|
|
"start",
|
|
"start rule",
|
|
new Choice([literalAbcd, literalEfgh, literalIjkl])
|
|
)
|
|
}
|
|
);
|
|
});
|
|
|
|
/* Canonical expression is "\"abcd\" / \"efgh\" / \"ijkl\"". */
|
|
test("parses expression", function() {
|
|
grammarParserParses(
|
|
'start: "abcd" / "efgh" / "ijkl"',
|
|
oneRuleGrammar(new Choice([literalAbcd, literalEfgh, literalIjkl]))
|
|
);
|
|
});
|
|
|
|
/* Canonical choice is "\"abcd\" / \"efgh\" / \"ijkl\"". */
|
|
test("parses choice", function() {
|
|
grammarParserParses(
|
|
'start: "abcd" "efgh" "ijkl"',
|
|
oneRuleGrammar(sequenceLiterals)
|
|
);
|
|
grammarParserParses(
|
|
'start: "abcd" "efgh" "ijkl" / "abcd" "efgh" "ijkl" / "abcd" "efgh" "ijkl"',
|
|
oneRuleGrammar(new Choice([
|
|
sequenceLiterals,
|
|
sequenceLiterals,
|
|
sequenceLiterals
|
|
]))
|
|
);
|
|
});
|
|
|
|
/* Canonical sequence is "\"abcd\" \"efgh\" \"ijkl\"". */
|
|
test("parses sequence", function() {
|
|
grammarParserParses(
|
|
'start: { code }',
|
|
oneRuleGrammar(new Action(sequenceEmpty, " code "))
|
|
);
|
|
grammarParserParses(
|
|
'start: !"abcd" { code }',
|
|
oneRuleGrammar(new Action(notAbcd, " code "))
|
|
);
|
|
grammarParserParses(
|
|
'start: !"abcd" !"efgh" !"ijkl" { code }',
|
|
oneRuleGrammar(new Action(sequenceNots, " code "))
|
|
);
|
|
|
|
grammarParserParses('start: ', oneRuleGrammar(sequenceEmpty));
|
|
grammarParserParses('start: !"abcd"', oneRuleGrammar(notAbcd));
|
|
grammarParserParses(
|
|
'start: !"abcd" !"efgh" !"ijkl"',
|
|
oneRuleGrammar(sequenceNots)
|
|
);
|
|
});
|
|
|
|
/* Canonical prefixed is "!\"abcd\"". */
|
|
test("parses prefixed", function() {
|
|
grammarParserParses(
|
|
'start: &"abcd"?',
|
|
oneRuleGrammar(new NotPredicate(new NotPredicate(choice)))
|
|
);
|
|
grammarParserParses('start: !"abcd"?', oneRuleGrammar(new NotPredicate(choice)));
|
|
grammarParserParses('start: "abcd"?', oneRuleGrammar(choice));
|
|
});
|
|
|
|
/* Canonical suffixed is "\"abcd\"?". */
|
|
test("parses suffixed", function() {
|
|
grammarParserParses('start: "abcd"?', oneRuleGrammar(choice));
|
|
grammarParserParses('start: "abcd"*', oneRuleGrammar(new ZeroOrMore(literalAbcd)));
|
|
grammarParserParses(
|
|
'start: "abcd"+',
|
|
oneRuleGrammar(new Action(
|
|
new Sequence([literalAbcd, new ZeroOrMore(literalAbcd)]),
|
|
function(first, rest) { return [first].concat(rest); }
|
|
))
|
|
);
|
|
grammarParserParses('start: "abcd"', literalGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical primary is "\"abcd\"". */
|
|
test("parses primary", function() {
|
|
grammarParserParses('start: a', identifierGrammar("a"));
|
|
grammarParserParses('start: "abcd"', literalGrammar("abcd"));
|
|
grammarParserParses('start: .', anyGrammar);
|
|
grammarParserParses('start: [a-d]', classGrammar("abcd"));
|
|
grammarParserParses('start: ("abcd")', literalGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical action is "{ code }". */
|
|
test("parses action", function() {
|
|
grammarParserParses('start: "a" { code }', actionGrammar(" code "));
|
|
});
|
|
|
|
/* Canonical braced is "{ code }". */
|
|
test("parses braced", function() {
|
|
grammarParserParses('start: "a" {}', actionGrammar(""));
|
|
grammarParserParses('start: "a" {a}', actionGrammar("a"));
|
|
grammarParserParses('start: "a" {{a}}', actionGrammar("{a}"));
|
|
grammarParserParses('start: "a" {aaa}', actionGrammar("aaa"));
|
|
});
|
|
|
|
/* Trivial character rules are not tested. */
|
|
|
|
/* Canonical identifier is "a". */
|
|
test("parses identifier", function() {
|
|
grammarParserParses('start: a', identifierGrammar("a"));
|
|
grammarParserParses('start: z', identifierGrammar("z"));
|
|
grammarParserParses('start: A', identifierGrammar("A"));
|
|
grammarParserParses('start: Z', identifierGrammar("Z"));
|
|
grammarParserParses('start: _', identifierGrammar("_"));
|
|
grammarParserParses('start: $', identifierGrammar("$"));
|
|
grammarParserParses('start: aa', identifierGrammar("aa"));
|
|
grammarParserParses('start: az', identifierGrammar("az"));
|
|
grammarParserParses('start: aA', identifierGrammar("aA"));
|
|
grammarParserParses('start: aZ', identifierGrammar("aZ"));
|
|
grammarParserParses('start: a0', identifierGrammar("a0"));
|
|
grammarParserParses('start: a9', identifierGrammar("a9"));
|
|
grammarParserParses('start: a_', identifierGrammar("a_"));
|
|
grammarParserParses('start: a$', identifierGrammar("a$"));
|
|
grammarParserParses('start: abcd', identifierGrammar("abcd"));
|
|
|
|
grammarParserParses('start: a\n', identifierGrammar("a"));
|
|
});
|
|
|
|
/* Canonical literal is "\"abcd\"". */
|
|
test("parses literal", function() {
|
|
grammarParserParses('start: "abcd"', literalGrammar("abcd"));
|
|
grammarParserParses("start: 'abcd'", literalGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical doubleQuotedLiteral is "\"abcd\"". */
|
|
test("parses doubleQuotedLiteral", function() {
|
|
grammarParserParses('start: ""', literalGrammar(""));
|
|
grammarParserParses('start: "a"', literalGrammar("a"));
|
|
grammarParserParses('start: "abc"', literalGrammar("abc"));
|
|
|
|
grammarParserParses('start: "abcd"\n', literalGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical doubleQuotedCharacter is "a". */
|
|
test("parses doubleQuotedCharacter", function() {
|
|
grammarParserParses('start: "a"', literalGrammar("a"));
|
|
grammarParserParses('start: "\\n"', literalGrammar("\n"));
|
|
grammarParserParses('start: "\\0"', literalGrammar("\0"));
|
|
grammarParserParses('start: "\\x00"', literalGrammar("\x00"));
|
|
grammarParserParses('start: "\\u0120"', literalGrammar("\u0120"));
|
|
grammarParserParses('start: "\\\n"', literalGrammar("\n"));
|
|
});
|
|
|
|
/* Canonical simpleDoubleQuotedCharacter is "a". */
|
|
test("parses simpleDoubleQuotedCharacter", function() {
|
|
grammarParserParses('start: "a"', literalGrammar("a"));
|
|
grammarParserParses('start: "\'"', literalGrammar("'"));
|
|
grammarParserDoesNotParse('start: """');
|
|
grammarParserDoesNotParse('start: "\\"');
|
|
grammarParserDoesNotParse('start: "\n"');
|
|
grammarParserDoesNotParse('start: "\r"');
|
|
grammarParserDoesNotParse('start: "\u2028"');
|
|
grammarParserDoesNotParse('start: "\u2029"');
|
|
});
|
|
|
|
/* Canonical singleQuotedLiteral is "'abcd'". */
|
|
test("parses singleQuotedLiteral", function() {
|
|
grammarParserParses("start: ''", literalGrammar(""));
|
|
grammarParserParses("start: 'a'", literalGrammar("a"));
|
|
grammarParserParses("start: 'abc'", literalGrammar("abc"));
|
|
|
|
grammarParserParses("start: 'abcd'\n", literalGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical singleQuotedCharacter is "a". */
|
|
test("parses singleQuotedCharacter", function() {
|
|
grammarParserParses("start: 'a'", literalGrammar("a"));
|
|
grammarParserParses("start: '\\n'", literalGrammar("\n"));
|
|
grammarParserParses("start: '\\0'", literalGrammar("\0"));
|
|
grammarParserParses("start: '\\x00'", literalGrammar("\x00"));
|
|
grammarParserParses("start: '\\u0120'", literalGrammar("\u0120"));
|
|
grammarParserParses("start: '\\\n'", literalGrammar("\n"));
|
|
});
|
|
|
|
/* Canonical simpleSingleQuotedCharacter is "a". */
|
|
test("parses simpleSingleQuotedCharacter", function() {
|
|
grammarParserParses("start: 'a'", literalGrammar("a"));
|
|
grammarParserParses("start: '\"'", literalGrammar("\""));
|
|
grammarParserDoesNotParse("start: '''");
|
|
grammarParserDoesNotParse("start: '\\'");
|
|
grammarParserDoesNotParse("start: '\n'");
|
|
grammarParserDoesNotParse("start: '\r'");
|
|
grammarParserDoesNotParse("start: '\u2028'");
|
|
grammarParserDoesNotParse("start: '\u2029'");
|
|
});
|
|
|
|
/* Canonical class is "[a-d]". */
|
|
test("parses classCharacterRange", function() {
|
|
grammarParserParses("start: []", classGrammar(""));
|
|
grammarParserParses("start: [a-d]", classGrammar("abcd"));
|
|
grammarParserParses("start: [a]", classGrammar("a"));
|
|
grammarParserParses("start: [a-de-hi-l]", classGrammar("abcdefghijkl"));
|
|
|
|
grammarParserParses("start: [a-d]\n", classGrammar("abcd"));
|
|
});
|
|
|
|
/* Canonical classCharacterRange is "a-d". */
|
|
test("parses classCharacterRange", function() {
|
|
grammarParserParses("start: [a-d]", classGrammar("abcd"));
|
|
grammarParserParses("start: [a-a]", classGrammar("a"));
|
|
grammarParserDoesNotParse("start: [b-a]");
|
|
});
|
|
|
|
/* Canonical classCharacter is "a". */
|
|
test("parses classCharacter", function() {
|
|
grammarParserParses("start: [a]", classGrammar("a"));
|
|
});
|
|
|
|
/* Canonical bracketDelimitedCharacter is "a". */
|
|
test("parses bracketDelimitedCharacter", function() {
|
|
grammarParserParses("start: [a]", classGrammar("a"));
|
|
grammarParserParses("start: [\\n]", classGrammar("\n"));
|
|
grammarParserParses("start: [\\0]", classGrammar("\0"));
|
|
grammarParserParses("start: [\\x00]", classGrammar("\x00"));
|
|
grammarParserParses("start: [\\u0120]", classGrammar("\u0120"));
|
|
grammarParserParses("start: [\\\n]", classGrammar("\n"));
|
|
});
|
|
|
|
/* Canonical simpleBracketDelimiedCharacter is "a". */
|
|
test("parses simpleBracketDelimitedCharacter", function() {
|
|
grammarParserParses("start: [a]", classGrammar("a"));
|
|
grammarParserParses("start: [[]", classGrammar("["));
|
|
grammarParserDoesNotParse("start: []]");
|
|
grammarParserDoesNotParse("start: [\\]");
|
|
grammarParserDoesNotParse("start: [\n]");
|
|
grammarParserDoesNotParse("start: [\r]");
|
|
grammarParserDoesNotParse("start: [\u2028]");
|
|
grammarParserDoesNotParse("start: [\u2029]");
|
|
});
|
|
|
|
/* Canonical simpleEscapeSequence is "\\n". */
|
|
test("parses simpleEscapeSequence", function() {
|
|
grammarParserParses('start: "\\\'"', literalGrammar("'"));
|
|
grammarParserParses('start: "\\""', literalGrammar("\""));
|
|
grammarParserParses('start: "\\\\"', literalGrammar("\\"));
|
|
grammarParserParses('start: "\\b"', literalGrammar("\b"));
|
|
grammarParserParses('start: "\\f"', literalGrammar("\f"));
|
|
grammarParserParses('start: "\\n"', literalGrammar("\n"));
|
|
grammarParserParses('start: "\\r"', literalGrammar("\r"));
|
|
grammarParserParses('start: "\\t"', literalGrammar("\t"));
|
|
grammarParserParses('start: "\\v"', literalGrammar("\v"));
|
|
|
|
grammarParserParses('start: "\\a"', literalGrammar("a"));
|
|
});
|
|
|
|
/* Canonical zeroEscapeSequence is "\\0". */
|
|
test("parses zeroEscapeSequence", function() {
|
|
grammarParserParses('start: "\\0"', literalGrammar("\0"));
|
|
grammarParserDoesNotParse('start: "\\00"');
|
|
grammarParserDoesNotParse('start: "\\09"');
|
|
});
|
|
|
|
/* Canonical hexEscapeSequence is "\\x00". */
|
|
test("parses hexEscapeSequence", function() {
|
|
grammarParserParses('start: "\\x00"', literalGrammar("\x00"));
|
|
grammarParserParses('start: "\\x09"', literalGrammar("\x09"));
|
|
grammarParserParses('start: "\\x0a"', literalGrammar("\x0a"));
|
|
grammarParserParses('start: "\\x0f"', literalGrammar("\x0f"));
|
|
grammarParserParses('start: "\\x0A"', literalGrammar("\x0A"));
|
|
grammarParserParses('start: "\\x0F"', literalGrammar("\x0F"));
|
|
grammarParserDoesNotParse('start: "\\x0"');
|
|
grammarParserParses('start: "\\x000"', literalGrammar("\x000"));
|
|
});
|
|
|
|
/* Canonical unicodeEscapeSequence is "\\u0120". */
|
|
test("parses unicodeEscapeSequence", function() {
|
|
grammarParserParses('start: "\\u0120"', literalGrammar("\u0120"));
|
|
grammarParserParses('start: "\\u0129"', literalGrammar("\u0129"));
|
|
grammarParserParses('start: "\\u012a"', literalGrammar("\u012a"));
|
|
grammarParserParses('start: "\\u012f"', literalGrammar("\u012f"));
|
|
grammarParserParses('start: "\\u012A"', literalGrammar("\u012A"));
|
|
grammarParserParses('start: "\\u012F"', literalGrammar("\u012F"));
|
|
grammarParserDoesNotParse('start: "\\u012"');
|
|
grammarParserParses('start: "\\u01234"', literalGrammar("\u01234"));
|
|
});
|
|
|
|
/* Canonical eolEscapeSequence is "\\\n". */
|
|
test("parses eolEscapeSequence", function() {
|
|
grammarParserParses('start: "\\\n"', literalGrammar("\n"));
|
|
grammarParserParses('start: "\\\r\n"', literalGrammar("\r\n"));
|
|
grammarParserParses('start: "\\\r"', literalGrammar("\r"));
|
|
grammarParserParses('start: "\\\u2028"', literalGrammar("\u2028"));
|
|
grammarParserParses('start: "\\\u2029"', literalGrammar("\u2029"));
|
|
});
|
|
|
|
/* Canonical __ is "\n". */
|
|
test("parses __", function() {
|
|
grammarParserParses('start:"abcd"', simpleGrammar);
|
|
grammarParserParses('start: "abcd"', simpleGrammar);
|
|
grammarParserParses('start:\n"abcd"', simpleGrammar);
|
|
grammarParserParses('start: "abcd"', simpleGrammar);
|
|
});
|
|
|
|
/* Trivial character class rules are not tested. */
|
|
|
|
/* Canonical eol is "\n". */
|
|
test("parses eol", function() {
|
|
grammarParserParses('start:\n"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\r\n"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\r"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2028"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2029"abcd"', simpleGrammar);
|
|
});
|
|
|
|
/* Canonical eolChar is "\n". */
|
|
test("parses eolChar", function() {
|
|
grammarParserParses('start:\n"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\r"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2028"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2029"abcd"', simpleGrammar);
|
|
});
|
|
|
|
/* Canonical whitespace is " ". */
|
|
test("parses whitespace", function() {
|
|
grammarParserParses('start:\t"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\v"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\f"abcd"', simpleGrammar);
|
|
grammarParserParses('start: "abcd"', simpleGrammar);
|
|
grammarParserParses('start:\xA0"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\uFEFF"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u1680"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u180E"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2000"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2001"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2002"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2003"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2004"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2005"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2006"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2007"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2008"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u2009"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u200A"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u202F"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u205F"abcd"', simpleGrammar);
|
|
grammarParserParses('start:\u3000"abcd"', simpleGrammar);
|
|
});
|
|
}
|
|
|
|
})();
|