node_modules

1 files changed, 170 insertions, 0 deletions

diff --git a/node_modules/concordance/lib/describe.js b/node_modules/concordance/lib/describe.js
new file mode 100644
index 000000000..a8aa94572
--- /dev/null
+++ b/node_modules/concordance/lib/describe.js
@@ -0,0 +1,170 @@
+'use strict'
+
+const argumentsValue = require('./complexValues/arguments')
+const arrayBufferValue = require('./complexValues/arrayBuffer')
+const boxedValue = require('./complexValues/boxed')
+const dataViewValue = require('./complexValues/dataView')
+const dateValue = require('./complexValues/date')
+const errorValue = require('./complexValues/error')
+const functionValue = require('./complexValues/function')
+const globalValue = require('./complexValues/global')
+const mapValue = require('./complexValues/map')
+const objectValue = require('./complexValues/object')
+const promiseValue = require('./complexValues/promise')
+const regexpValue = require('./complexValues/regexp')
+const setValue = require('./complexValues/set')
+const typedArrayValue = require('./complexValues/typedArray')
+
+const itemDescriptor = require('./metaDescriptors/item')
+const mapEntryDescriptor = require('./metaDescriptors/mapEntry')
+const propertyDescriptor = require('./metaDescriptors/property')
+
+const booleanValue = require('./primitiveValues/boolean')
+const nullValue = require('./primitiveValues/null')
+const numberValue = require('./primitiveValues/number')
+const stringValue = require('./primitiveValues/string')
+const symbolValue = require('./primitiveValues/symbol')
+const undefinedValue = require('./primitiveValues/undefined')
+
+const getCtor = require('./getCtor')
+const getStringTag = require('./getStringTag')
+const pluginRegistry = require('./pluginRegistry')
+const Registry = require('./Registry')
+
+const SpecializedComplexes = new Map([
+  ['Arguments', argumentsValue.describe],
+  ['ArrayBuffer', arrayBufferValue.describe],
+  ['DataView', dataViewValue.describe],
+  ['Date', dateValue.describe],
+  ['Error', errorValue.describe],
+  ['Float32Array', typedArrayValue.describe],
+  ['Float64Array', typedArrayValue.describe],
+  ['Function', functionValue.describe],
+  ['GeneratorFunction', functionValue.describe],
+  ['global', globalValue.describe],
+  ['Int16Array', typedArrayValue.describe],
+  ['Int32Array', typedArrayValue.describe],
+  ['Int8Array', typedArrayValue.describe],
+  ['Map', mapValue.describe],
+  ['Promise', promiseValue.describe],
+  ['RegExp', regexpValue.describe],
+  ['Set', setValue.describe],
+  ['Uint16Array', typedArrayValue.describe],
+  ['Uint32Array', typedArrayValue.describe],
+  ['Uint8Array', typedArrayValue.describe],
+  ['Uint8ClampedArray', typedArrayValue.describe]
+])
+
+function describePrimitive (value) {
+  if (value === null) return nullValue.describe()
+  if (value === undefined) return undefinedValue.describe()
+  if (value === true || value === false) return booleanValue.describe(value)
+
+  const type = typeof value
+  if (type === 'number') return numberValue.describe(value)
+  if (type === 'string') return stringValue.describe(value)
+  if (type === 'symbol') return symbolValue.describe(value)
+
+  return null
+}
+
+function unboxComplex (tag, complex) {
+  // Try to unbox by calling `valueOf()`. `describePrimitive()` will return
+  // `null` if the resulting value is not a primitive, in which case it's
+  // ignored.
+  if (typeof complex.valueOf === 'function') {
+    const value = complex.valueOf()
+    if (value !== complex) return describePrimitive(value)
+  }
+
+  return null
+}
+
+function registerPlugins (plugins) {
+  if (!Array.isArray(plugins) || plugins.length === 0) return () => null
+
+  const tryFns = pluginRegistry.getTryDescribeValues(plugins)
+  return (value, stringTag, ctor) => {
+    for (const tryDescribeValue of tryFns) {
+      const describeValue = tryDescribeValue(value, stringTag, ctor)
+      if (describeValue) return describeValue
+    }
+
+    return null
+  }
+}
+
+function describeComplex (value, registry, tryPlugins, describeAny, describeItem, describeMapEntry, describeProperty) {
+  if (registry.has(value)) return registry.get(value)
+
+  const stringTag = getStringTag(value)
+  const ctor = getCtor(stringTag, value)
+  const pointer = registry.alloc(value)
+
+  let unboxed
+  let describeValue = tryPlugins(value, stringTag, ctor)
+  if (describeValue === null) {
+    if (SpecializedComplexes.has(stringTag)) {
+      describeValue = SpecializedComplexes.get(stringTag)
+    } else {
+      unboxed = unboxComplex(stringTag, value)
+      if (unboxed !== null) {
+        describeValue = boxedValue.describe
+      } else {
+        describeValue = objectValue.describe
+      }
+    }
+  }
+
+  const descriptor = describeValue({
+    ctor,
+    describeAny,
+    describeItem,
+    describeMapEntry,
+    describeProperty,
+    pointer: pointer.index,
+    stringTag,
+    unboxed,
+    value
+  })
+  pointer.descriptor = descriptor
+  return descriptor
+}
+
+function describe (value, options) {
+  const primitive = describePrimitive(value)
+  if (primitive !== null) return primitive
+
+  const registry = new Registry()
+  const tryPlugins = registerPlugins(options && options.plugins)
+  const curriedComplex = c => {
+    return describeComplex(c, registry, tryPlugins, describeAny, describeItem, describeMapEntry, describeProperty)
+  }
+
+  const describeAny = any => {
+    const descriptor = describePrimitive(any)
+    return descriptor !== null
+      ? descriptor
+      : curriedComplex(any)
+  }
+
+  const describeItem = (index, valueDescriptor) => {
+    return valueDescriptor.isPrimitive === true
+      ? itemDescriptor.describePrimitive(index, valueDescriptor)
+      : itemDescriptor.describeComplex(index, valueDescriptor)
+  }
+
+  const describeMapEntry = (keyDescriptor, valueDescriptor) => {
+    return mapEntryDescriptor.describe(keyDescriptor, valueDescriptor)
+  }
+
+  const describeProperty = (key, valueDescriptor) => {
+    const keyDescriptor = describePrimitive(key)
+    return valueDescriptor.isPrimitive === true
+      ? propertyDescriptor.describePrimitive(keyDescriptor, valueDescriptor)
+      : propertyDescriptor.describeComplex(keyDescriptor, valueDescriptor)
+  }
+
+  return curriedComplex(value)
+}
+module.exports = describe