switch to vuepress

1 files changed, 166 insertions, 0 deletions

diff --git a/node_modules/stylus-loader/lib/evaluator.js b/node_modules/stylus-loader/lib/evaluator.js
new file mode 100644
index 00000000..dc6013d8
--- /dev/null
+++ b/node_modules/stylus-loader/lib/evaluator.js
@@ -0,0 +1,166 @@
+// Except for a block in #visitImport, everything here is an exact copy of the
+// source in stylus this currently depends on. If stylus is updated, update
+// this appropriately.
+
+var Evaluator = require('stylus/lib/visitor/evaluator')
+  , nodes = require('stylus/lib/nodes')
+  , Stack = require('stylus/lib/stack')
+  , Frame = require('stylus/lib/stack/frame')
+  , Scope = require('stylus/lib/stack/scope')
+  , utils = require('stylus/lib/utils')
+  , bifs = require('stylus/lib/functions')
+  , basename = require('path').basename
+  , dirname = require('path').dirname
+  , relative = require('path').relative
+  , join = require('path').join
+  , colors = require('stylus/lib/colors')
+  // , debug = require('debug')('stylus:evaluator')
+  , fs = require('fs');
+
+module.exports = CachedPathEvaluator;
+
+/**
+ * Import `file` and return Block node.
+ *
+ * @api private
+ */
+function importFile(node, file, literal, index) {
+  var importStack = this.importStack
+    , Parser = require('stylus/lib/parser')
+    , stat;
+
+  // Handling the `require`
+  if (node.once) {
+    if (this.requireHistory[file]) return nodes.null;
+    this.requireHistory[file] = true;
+
+    if (literal && !this.includeCSS) {
+      return node;
+    }
+  }
+
+  // Expose imports
+  node.path = file;
+  node.dirname = dirname(file);
+  // Store the modified time
+  stat = fs.statSync(file);
+  node.mtime = stat.mtime;
+  this.paths.push(node.dirname);
+
+  // Avoid overflows from importing the same file over again
+  if (file === importStack[importStack.length - 1]) return nodes.null;
+
+  if (this.options._imports) this.options._imports.push(node.clone());
+
+  // Parse the file
+  importStack.push(file);
+  nodes.filename = file;
+
+  var str;
+  if (this.cache.sources && this.cache.sources[file]) {
+    str = this.cache.sources[file];
+  } else {
+    str = fs.readFileSync(file, 'utf8');
+  }
+
+  if (literal && !this.resolveURL) return new nodes.Literal(str.replace(/\r\n?/g, '\n'));
+
+  // parse
+  var block = new nodes.Block
+    , parser = new Parser(str, utils.merge({ root: block }, this.options));
+
+  try {
+    block = parser.parse();
+  } catch (err) {
+    err.filename = file;
+    err.lineno = parser.lexer.lineno;
+    err.input = str;
+    throw err;
+  }
+
+  // Evaluate imported "root"
+  block.parent = this.root;
+  block.scope = false;
+  var ret = this.visit(block);
+  importStack.pop();
+  if (importStack.length || index) this.paths.pop();
+
+  return ret;
+}
+
+function CachedPathEvaluator(root, options) {
+  Evaluator.apply(this, arguments);
+
+  this.cache = options.cache;
+}
+
+CachedPathEvaluator.prototype = Object.create(Evaluator.prototype);
+CachedPathEvaluator.prototype.constructor = CachedPathEvaluator;
+
+CachedPathEvaluator.prototype.visitImport = function(imported) {
+  this.return++;
+
+  var path = this.visit(imported.path).first
+    , nodeName = imported.once ? 'require' : 'import'
+    , found
+    , literal
+    , index;
+
+  this.return--;
+  // debug('import %s', path);
+
+  // url() passed
+  if ('url' == path.name) {
+    if (imported.once) throw new Error('You cannot @require a url');
+
+    return imported;
+  }
+
+  // Ensure string
+  if (!path.string) throw new Error('@' + nodeName + ' string expected');
+
+  var name = path = path.string;
+
+  // Absolute URL
+  if (/url\s*\(\s*['"]?(?:https?:)?\/\//i.test(path)) {
+    if (imported.once) throw new Error('You cannot @require a url');
+    return imported;
+  }
+
+  // Literal
+  if (/\.css(?:"|$)/.test(path)) {
+    literal = true;
+    if (!imported.once && !this.includeCSS) {
+      return imported;
+    }
+  }
+
+  // support optional .styl
+  if (!literal && !/\.styl$/i.test(path)) path += '.styl';
+
+  /*****************************************************************************
+  * THIS IS THE ONLY BLOCK THAT DIFFERS FROM THE ACTUAL STYLUS IMPLEMENTATION. *
+  *****************************************************************************/
+  // Lookup
+  var dirname = this.paths[this.paths.length - 1];
+  found = this.cache.find(path, dirname);
+  index = this.cache.isIndex(path, dirname);
+  if (!found) {
+    found = utils.find(path, this.paths, this.filename);
+    if (!found) {
+      found = utils.lookupIndex(name, this.paths, this.filename);
+      index = true;
+    }
+  }
+
+  // Throw if import failed
+  if (!found) throw new Error('failed to locate @' + nodeName + ' file ' + path);
+
+  var block = new nodes.Block;
+
+  for (var i = 0, len = found.length; i < len; ++i) {
+    block.push(importFile.call(this, imported, found[i], literal, index));
+  }
+
+  return block;
+}