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var _ = require("underscore");
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var lop = require("lop");
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var documentMatchers = require("./styles/document-matchers");
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var htmlPaths = require("./styles/html-paths");
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var tokenise = require("./styles/parser/tokeniser").tokenise;
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var results = require("./results");
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exports.readHtmlPath = readHtmlPath;
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exports.readDocumentMatcher = readDocumentMatcher;
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exports.readStyle = readStyle;
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function readStyle(string) {
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return parseString(styleRule, string);
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}
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function createStyleRule() {
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return lop.rules.sequence(
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lop.rules.sequence.capture(documentMatcherRule()),
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lop.rules.tokenOfType("whitespace"),
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lop.rules.tokenOfType("arrow"),
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lop.rules.sequence.capture(lop.rules.optional(lop.rules.sequence(
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lop.rules.tokenOfType("whitespace"),
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lop.rules.sequence.capture(htmlPathRule())
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).head())),
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lop.rules.tokenOfType("end")
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).map(function(documentMatcher, htmlPath) {
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return {
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from: documentMatcher,
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to: htmlPath.valueOrElse(htmlPaths.empty)
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};
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});
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}
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function readDocumentMatcher(string) {
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return parseString(documentMatcherRule(), string);
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}
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function documentMatcherRule() {
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var sequence = lop.rules.sequence;
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var identifierToConstant = function(identifier, constant) {
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return lop.rules.then(
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lop.rules.token("identifier", identifier),
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function() {
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return constant;
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}
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);
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};
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var paragraphRule = identifierToConstant("p", documentMatchers.paragraph);
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var runRule = identifierToConstant("r", documentMatchers.run);
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var elementTypeRule = lop.rules.firstOf("p or r or table",
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paragraphRule,
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runRule
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);
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var styleIdRule = lop.rules.sequence(
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lop.rules.tokenOfType("dot"),
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lop.rules.sequence.cut(),
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lop.rules.sequence.capture(identifierRule)
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).map(function(styleId) {
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return {styleId: styleId};
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});
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var styleNameMatcherRule = lop.rules.firstOf("style name matcher",
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lop.rules.then(
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lop.rules.sequence(
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lop.rules.tokenOfType("equals"),
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lop.rules.sequence.cut(),
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lop.rules.sequence.capture(stringRule)
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).head(),
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function(styleName) {
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return {styleName: documentMatchers.equalTo(styleName)};
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}
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),
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lop.rules.then(
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lop.rules.sequence(
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lop.rules.tokenOfType("startsWith"),
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lop.rules.sequence.cut(),
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lop.rules.sequence.capture(stringRule)
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).head(),
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function(styleName) {
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return {styleName: documentMatchers.startsWith(styleName)};
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}
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)
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);
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var styleNameRule = lop.rules.sequence(
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lop.rules.tokenOfType("open-square-bracket"),
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lop.rules.sequence.cut(),
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lop.rules.token("identifier", "style-name"),
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lop.rules.sequence.capture(styleNameMatcherRule),
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lop.rules.tokenOfType("close-square-bracket")
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).head();
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var listTypeRule = lop.rules.firstOf("list type",
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identifierToConstant("ordered-list", {isOrdered: true}),
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identifierToConstant("unordered-list", {isOrdered: false})
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);
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var listRule = sequence(
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lop.rules.tokenOfType("colon"),
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sequence.capture(listTypeRule),
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sequence.cut(),
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lop.rules.tokenOfType("open-paren"),
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sequence.capture(integerRule),
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lop.rules.tokenOfType("close-paren")
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).map(function(listType, levelNumber) {
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return {
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list: {
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isOrdered: listType.isOrdered,
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levelIndex: levelNumber - 1
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}
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};
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});
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function createMatcherSuffixesRule(rules) {
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var matcherSuffix = lop.rules.firstOf.apply(
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lop.rules.firstOf,
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["matcher suffix"].concat(rules)
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);
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var matcherSuffixes = lop.rules.zeroOrMore(matcherSuffix);
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return lop.rules.then(matcherSuffixes, function(suffixes) {
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var matcherOptions = {};
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suffixes.forEach(function(suffix) {
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_.extend(matcherOptions, suffix);
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});
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return matcherOptions;
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});
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}
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var paragraphOrRun = sequence(
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sequence.capture(elementTypeRule),
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sequence.capture(createMatcherSuffixesRule([
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styleIdRule,
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styleNameRule,
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listRule
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]))
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).map(function(createMatcher, matcherOptions) {
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return createMatcher(matcherOptions);
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});
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var table = sequence(
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lop.rules.token("identifier", "table"),
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sequence.capture(createMatcherSuffixesRule([
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styleIdRule,
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styleNameRule
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]))
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).map(function(options) {
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return documentMatchers.table(options);
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});
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var bold = identifierToConstant("b", documentMatchers.bold);
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var italic = identifierToConstant("i", documentMatchers.italic);
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var underline = identifierToConstant("u", documentMatchers.underline);
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var strikethrough = identifierToConstant("strike", documentMatchers.strikethrough);
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var allCaps = identifierToConstant("all-caps", documentMatchers.allCaps);
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var smallCaps = identifierToConstant("small-caps", documentMatchers.smallCaps);
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var highlight = sequence(
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lop.rules.token("identifier", "highlight"),
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lop.rules.sequence.capture(lop.rules.optional(lop.rules.sequence(
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lop.rules.tokenOfType("open-square-bracket"),
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lop.rules.sequence.cut(),
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lop.rules.token("identifier", "color"),
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lop.rules.tokenOfType("equals"),
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lop.rules.sequence.capture(stringRule),
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lop.rules.tokenOfType("close-square-bracket")
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).head()))
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).map(function(color) {
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return documentMatchers.highlight({
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color: color.valueOrElse(undefined)
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});
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});
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var commentReference = identifierToConstant("comment-reference", documentMatchers.commentReference);
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var breakMatcher = sequence(
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lop.rules.token("identifier", "br"),
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sequence.cut(),
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lop.rules.tokenOfType("open-square-bracket"),
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lop.rules.token("identifier", "type"),
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lop.rules.tokenOfType("equals"),
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sequence.capture(stringRule),
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lop.rules.tokenOfType("close-square-bracket")
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).map(function(breakType) {
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switch (breakType) {
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case "line":
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return documentMatchers.lineBreak;
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case "page":
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return documentMatchers.pageBreak;
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case "column":
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return documentMatchers.columnBreak;
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default:
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// TODO: handle unknown document matchers
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}
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});
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return lop.rules.firstOf("element type",
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paragraphOrRun,
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table,
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bold,
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italic,
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underline,
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strikethrough,
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allCaps,
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smallCaps,
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highlight,
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commentReference,
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breakMatcher
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);
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}
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function readHtmlPath(string) {
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return parseString(htmlPathRule(), string);
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}
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function htmlPathRule() {
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var capture = lop.rules.sequence.capture;
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var whitespaceRule = lop.rules.tokenOfType("whitespace");
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var freshRule = lop.rules.then(
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lop.rules.optional(lop.rules.sequence(
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lop.rules.tokenOfType("colon"),
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lop.rules.token("identifier", "fresh")
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)),
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function(option) {
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return option.map(function() {
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return true;
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}).valueOrElse(false);
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}
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);
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var separatorRule = lop.rules.then(
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lop.rules.optional(lop.rules.sequence(
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lop.rules.tokenOfType("colon"),
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lop.rules.token("identifier", "separator"),
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lop.rules.tokenOfType("open-paren"),
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capture(stringRule),
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lop.rules.tokenOfType("close-paren")
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).head()),
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function(option) {
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return option.valueOrElse("");
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}
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);
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var tagNamesRule = lop.rules.oneOrMoreWithSeparator(
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identifierRule,
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lop.rules.tokenOfType("choice")
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);
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var styleElementRule = lop.rules.sequence(
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capture(tagNamesRule),
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capture(lop.rules.zeroOrMore(attributeOrClassRule)),
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capture(freshRule),
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capture(separatorRule)
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).map(function(tagName, attributesList, fresh, separator) {
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var attributes = Object.create(null);
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var options = {};
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attributesList.forEach(function(attribute) {
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if (attribute.append && attributes[attribute.name]) {
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attributes[attribute.name] += " " + attribute.value;
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} else {
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attributes[attribute.name] = attribute.value;
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}
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});
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if (fresh) {
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options.fresh = true;
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}
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if (separator) {
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options.separator = separator;
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}
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return htmlPaths.element(tagName, attributes, options);
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});
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return lop.rules.firstOf("html path",
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lop.rules.then(lop.rules.tokenOfType("bang"), function() {
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return htmlPaths.ignore;
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}),
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lop.rules.then(
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lop.rules.zeroOrMoreWithSeparator(
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styleElementRule,
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lop.rules.sequence(
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whitespaceRule,
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lop.rules.tokenOfType("gt"),
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whitespaceRule
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)
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),
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htmlPaths.elements
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)
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);
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}
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var identifierRule = lop.rules.then(
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lop.rules.tokenOfType("identifier"),
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decodeEscapeSequences
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);
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var integerRule = lop.rules.tokenOfType("integer");
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var stringRule = lop.rules.then(
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lop.rules.tokenOfType("string"),
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decodeEscapeSequences
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);
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var escapeSequences = {
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"n": "\n",
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"r": "\r",
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"t": "\t"
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};
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function decodeEscapeSequences(value) {
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return value.replace(/\\(.)/g, function(match, code) {
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return escapeSequences[code] || code;
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});
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}
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var attributeRule = lop.rules.sequence(
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lop.rules.tokenOfType("open-square-bracket"),
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lop.rules.sequence.cut(),
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lop.rules.sequence.capture(identifierRule),
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lop.rules.tokenOfType("equals"),
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lop.rules.sequence.capture(stringRule),
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lop.rules.tokenOfType("close-square-bracket")
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).map(function(name, value) {
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return {name: name, value: value, append: false};
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});
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var classRule = lop.rules.sequence(
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lop.rules.tokenOfType("dot"),
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lop.rules.sequence.cut(),
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lop.rules.sequence.capture(identifierRule)
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).map(function(className) {
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return {name: "class", value: className, append: true};
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});
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var attributeOrClassRule = lop.rules.firstOf(
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"attribute or class",
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attributeRule,
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classRule
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);
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function parseString(rule, string) {
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var tokens = tokenise(string);
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var parser = lop.Parser();
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var parseResult = parser.parseTokens(rule, tokens);
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if (parseResult.isSuccess()) {
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return results.success(parseResult.value());
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} else {
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return new results.Result(null, [results.warning(describeFailure(string, parseResult))]);
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}
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}
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function describeFailure(input, parseResult) {
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return "Did not understand this style mapping, so ignored it: " + input + "\n" +
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parseResult.errors().map(describeError).join("\n");
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}
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function describeError(error) {
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return "Error was at character number " + error.characterNumber() + ": " +
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"Expected " + error.expected + " but got " + error.actual;
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}
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var styleRule = createStyleRule();
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