v6

node_modules/ajv/lib/compile/util.js

@@ -0,0 +1,274 @@
+'use strict';
+
+
+module.exports = {
+  copy: copy,
+  checkDataType: checkDataType,
+  checkDataTypes: checkDataTypes,
+  coerceToTypes: coerceToTypes,
+  toHash: toHash,
+  getProperty: getProperty,
+  escapeQuotes: escapeQuotes,
+  equal: require('fast-deep-equal'),
+  ucs2length: require('./ucs2length'),
+  varOccurences: varOccurences,
+  varReplace: varReplace,
+  cleanUpCode: cleanUpCode,
+  finalCleanUpCode: finalCleanUpCode,
+  schemaHasRules: schemaHasRules,
+  schemaHasRulesExcept: schemaHasRulesExcept,
+  schemaUnknownRules: schemaUnknownRules,
+  toQuotedString: toQuotedString,
+  getPathExpr: getPathExpr,
+  getPath: getPath,
+  getData: getData,
+  unescapeFragment: unescapeFragment,
+  unescapeJsonPointer: unescapeJsonPointer,
+  escapeFragment: escapeFragment,
+  escapeJsonPointer: escapeJsonPointer
+};
+
+
+function copy(o, to) {
+  to = to || {};
+  for (var key in o) to[key] = o[key];
+  return to;
+}
+
+
+function checkDataType(dataType, data, negate) {
+  var EQUAL = negate ? ' !== ' : ' === '
+    , AND = negate ? ' || ' : ' && '
+    , OK = negate ? '!' : ''
+    , NOT = negate ? '' : '!';
+  switch (dataType) {
+    case 'null': return data + EQUAL + 'null';
+    case 'array': return OK + 'Array.isArray(' + data + ')';
+    case 'object': return '(' + OK + data + AND +
+                          'typeof ' + data + EQUAL + '"object"' + AND +
+                          NOT + 'Array.isArray(' + data + '))';
+    case 'integer': return '(typeof ' + data + EQUAL + '"number"' + AND +
+                           NOT + '(' + data + ' % 1)' +
+                           AND + data + EQUAL + data + ')';
+    default: return 'typeof ' + data + EQUAL + '"' + dataType + '"';
+  }
+}
+
+
+function checkDataTypes(dataTypes, data) {
+  switch (dataTypes.length) {
+    case 1: return checkDataType(dataTypes[0], data, true);
+    default:
+      var code = '';
+      var types = toHash(dataTypes);
+      if (types.array && types.object) {
+        code = types.null ? '(': '(!' + data + ' || ';
+        code += 'typeof ' + data + ' !== "object")';
+        delete types.null;
+        delete types.array;
+        delete types.object;
+      }
+      if (types.number) delete types.integer;
+      for (var t in types)
+        code += (code ? ' && ' : '' ) + checkDataType(t, data, true);
+
+      return code;
+  }
+}
+
+
+var COERCE_TO_TYPES = toHash([ 'string', 'number', 'integer', 'boolean', 'null' ]);
+function coerceToTypes(optionCoerceTypes, dataTypes) {
+  if (Array.isArray(dataTypes)) {
+    var types = [];
+    for (var i=0; i<dataTypes.length; i++) {
+      var t = dataTypes[i];
+      if (COERCE_TO_TYPES[t]) types[types.length] = t;
+      else if (optionCoerceTypes === 'array' && t === 'array') types[types.length] = t;
+    }
+    if (types.length) return types;
+  } else if (COERCE_TO_TYPES[dataTypes]) {
+    return [dataTypes];
+  } else if (optionCoerceTypes === 'array' && dataTypes === 'array') {
+    return ['array'];
+  }
+}
+
+
+function toHash(arr) {
+  var hash = {};
+  for (var i=0; i<arr.length; i++) hash[arr[i]] = true;
+  return hash;
+}
+
+
+var IDENTIFIER = /^[a-z$_][a-z$_0-9]*$/i;
+var SINGLE_QUOTE = /'|\\/g;
+function getProperty(key) {
+  return typeof key == 'number'
+          ? '[' + key + ']'
+          : IDENTIFIER.test(key)
+            ? '.' + key
+            : "['" + escapeQuotes(key) + "']";
+}
+
+
+function escapeQuotes(str) {
+  return str.replace(SINGLE_QUOTE, '\\$&')
+            .replace(/\n/g, '\\n')
+            .replace(/\r/g, '\\r')
+            .replace(/\f/g, '\\f')
+            .replace(/\t/g, '\\t');
+}
+
+
+function varOccurences(str, dataVar) {
+  dataVar += '[^0-9]';
+  var matches = str.match(new RegExp(dataVar, 'g'));
+  return matches ? matches.length : 0;
+}
+
+
+function varReplace(str, dataVar, expr) {
+  dataVar += '([^0-9])';
+  expr = expr.replace(/\$/g, '$$$$');
+  return str.replace(new RegExp(dataVar, 'g'), expr + '$1');
+}
+
+
+var EMPTY_ELSE = /else\s*{\s*}/g
+  , EMPTY_IF_NO_ELSE = /if\s*\([^)]+\)\s*\{\s*\}(?!\s*else)/g
+  , EMPTY_IF_WITH_ELSE = /if\s*\(([^)]+)\)\s*\{\s*\}\s*else(?!\s*if)/g;
+function cleanUpCode(out) {
+  return out.replace(EMPTY_ELSE, '')
+            .replace(EMPTY_IF_NO_ELSE, '')
+            .replace(EMPTY_IF_WITH_ELSE, 'if (!($1))');
+}
+
+
+var ERRORS_REGEXP = /[^v.]errors/g
+  , REMOVE_ERRORS = /var errors = 0;|var vErrors = null;|validate.errors = vErrors;/g
+  , REMOVE_ERRORS_ASYNC = /var errors = 0;|var vErrors = null;/g
+  , RETURN_VALID = 'return errors === 0;'
+  , RETURN_TRUE = 'validate.errors = null; return true;'
+  , RETURN_ASYNC = /if \(errors === 0\) return data;\s*else throw new ValidationError\(vErrors\);/
+  , RETURN_DATA_ASYNC = 'return data;'
+  , ROOTDATA_REGEXP = /[^A-Za-z_$]rootData[^A-Za-z0-9_$]/g
+  , REMOVE_ROOTDATA = /if \(rootData === undefined\) rootData = data;/;
+
+function finalCleanUpCode(out, async) {
+  var matches = out.match(ERRORS_REGEXP);
+  if (matches && matches.length == 2) {
+    out = async
+          ? out.replace(REMOVE_ERRORS_ASYNC, '')
+               .replace(RETURN_ASYNC, RETURN_DATA_ASYNC)
+          : out.replace(REMOVE_ERRORS, '')
+               .replace(RETURN_VALID, RETURN_TRUE);
+  }
+
+  matches = out.match(ROOTDATA_REGEXP);
+  if (!matches || matches.length !== 3) return out;
+  return out.replace(REMOVE_ROOTDATA, '');
+}
+
+
+function schemaHasRules(schema, rules) {
+  if (typeof schema == 'boolean') return !schema;
+  for (var key in schema) if (rules[key]) return true;
+}
+
+
+function schemaHasRulesExcept(schema, rules, exceptKeyword) {
+  if (typeof schema == 'boolean') return !schema && exceptKeyword != 'not';
+  for (var key in schema) if (key != exceptKeyword && rules[key]) return true;
+}
+
+
+function schemaUnknownRules(schema, rules) {
+  if (typeof schema == 'boolean') return;
+  for (var key in schema) if (!rules[key]) return key;
+}
+
+
+function toQuotedString(str) {
+  return '\'' + escapeQuotes(str) + '\'';
+}
+
+
+function getPathExpr(currentPath, expr, jsonPointers, isNumber) {
+  var path = jsonPointers // false by default
+              ? '\'/\' + ' + expr + (isNumber ? '' : '.replace(/~/g, \'~0\').replace(/\\//g, \'~1\')')
+              : (isNumber ? '\'[\' + ' + expr + ' + \']\'' : '\'[\\\'\' + ' + expr + ' + \'\\\']\'');
+  return joinPaths(currentPath, path);
+}
+
+
+function getPath(currentPath, prop, jsonPointers) {
+  var path = jsonPointers // false by default
+              ? toQuotedString('/' + escapeJsonPointer(prop))
+              : toQuotedString(getProperty(prop));
+  return joinPaths(currentPath, path);
+}
+
+
+var JSON_POINTER = /^\/(?:[^~]|~0|~1)*$/;
+var RELATIVE_JSON_POINTER = /^([0-9]+)(#|\/(?:[^~]|~0|~1)*)?$/;
+function getData($data, lvl, paths) {
+  var up, jsonPointer, data, matches;
+  if ($data === '') return 'rootData';
+  if ($data[0] == '/') {
+    if (!JSON_POINTER.test($data)) throw new Error('Invalid JSON-pointer: ' + $data);
+    jsonPointer = $data;
+    data = 'rootData';
+  } else {
+    matches = $data.match(RELATIVE_JSON_POINTER);
+    if (!matches) throw new Error('Invalid JSON-pointer: ' + $data);
+    up = +matches[1];
+    jsonPointer = matches[2];
+    if (jsonPointer == '#') {
+      if (up >= lvl) throw new Error('Cannot access property/index ' + up + ' levels up, current level is ' + lvl);
+      return paths[lvl - up];
+    }
+
+    if (up > lvl) throw new Error('Cannot access data ' + up + ' levels up, current level is ' + lvl);
+    data = 'data' + ((lvl - up) || '');
+    if (!jsonPointer) return data;
+  }
+
+  var expr = data;
+  var segments = jsonPointer.split('/');
+  for (var i=0; i<segments.length; i++) {
+    var segment = segments[i];
+    if (segment) {
+      data += getProperty(unescapeJsonPointer(segment));
+      expr += ' && ' + data;
+    }
+  }
+  return expr;
+}
+
+
+function joinPaths (a, b) {
+  if (a == '""') return b;
+  return (a + ' + ' + b).replace(/' \+ '/g, '');
+}
+
+
+function unescapeFragment(str) {
+  return unescapeJsonPointer(decodeURIComponent(str));
+}
+
+
+function escapeFragment(str) {
+  return encodeURIComponent(escapeJsonPointer(str));
+}
+
+
+function escapeJsonPointer(str) {
+  return str.replace(/~/g, '~0').replace(/\//g, '~1');
+}
+
+
+function unescapeJsonPointer(str) {
+  return str.replace(/~1/g, '/').replace(/~0/g, '~');
+}