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replace nil comparisons with calls to isNil

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def
2014-08-01 02:23:13 +02:00
parent 2c6406703c
commit dc756a7618
1 changed files with 52 additions and 52 deletions
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104
lib/pure/xmldom.nim
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@@ -168,7 +168,7 @@ proc documentElement*(doc: PDocument): PElement =
proc findNodes(nl: PNode, name: string): seq[PNode] =
# Made for getElementsByTagName
var r: seq[PNode] = @[]
if nl.childNodes == nil: return @[]
if isNil(nl.childNodes): return @[]
if nl.childNodes.len() == 0: return @[]
for i in items(nl.childNodes):
@@ -176,7 +176,7 @@ proc findNodes(nl: PNode, name: string): seq[PNode] =
if i.FNodeName == name or name == "*":
r.add(i)
if i.childNodes != nil:
if not isNil(i.childNodes):
if i.childNodes.len() != 0:
r.add(findNodes(i, name))
@@ -185,7 +185,7 @@ proc findNodes(nl: PNode, name: string): seq[PNode] =
proc findNodesNS(nl: PNode, namespaceURI: string, localName: string): seq[PNode] =
# Made for getElementsByTagNameNS
var r: seq[PNode] = @[]
if nl.childNodes == nil: return @[]
if isNil(nl.childNodes): return @[]
if nl.childNodes.len() == 0: return @[]
for i in items(nl.childNodes):
@@ -193,7 +193,7 @@ proc findNodesNS(nl: PNode, namespaceURI: string, localName: string): seq[PNode]
if (i.FNamespaceURI == namespaceURI or namespaceURI == "*") and (i.FLocalName == localName or localName == "*"):
r.add(i)
if i.childNodes != nil:
if not isNil(i.childNodes):
if i.childNodes.len() != 0:
r.add(findNodesNS(i, namespaceURI, localName))
@@ -228,7 +228,7 @@ proc createAttributeNS*(doc: PDocument, namespaceURI: string, qualifiedName: str
raise newException(EInvalidCharacterErr, "Invalid character")
# Exceptions
if qualifiedName.contains(':'):
if namespaceURI == nil:
if isNil(namespaceURI):
raise newException(ENamespaceErr, "When qualifiedName contains a prefix namespaceURI cannot be nil")
elif qualifiedName.split(':')[0].toLower() == "xml" and namespaceURI != "http://www.w3.org/XML/1998/namespace":
raise newException(ENamespaceErr,
@@ -304,7 +304,7 @@ proc createElement*(doc: PDocument, tagName: string): PElement =
proc createElementNS*(doc: PDocument, namespaceURI: string, qualifiedName: string): PElement =
## Creates an element of the given qualified name and namespace URI.
if qualifiedName.contains(':'):
if namespaceURI == nil:
if isNIl(namespaceURI):
raise newException(ENamespaceErr, "When qualifiedName contains a prefix namespaceURI cannot be nil")
elif qualifiedName.split(':')[0].toLower() == "xml" and namespaceURI != "http://www.w3.org/XML/1998/namespace":
raise newException(ENamespaceErr,
@@ -445,7 +445,7 @@ proc importNode*(doc: PDocument, importedNode: PNode, deep: bool): PNode =
proc firstChild*(n: PNode): PNode =
## Returns this node's first child
if n.childNodes != nil and n.childNodes.len() > 0:
if not isNil(n.childNodes) and n.childNodes.len() > 0:
return n.childNodes[0]
else:
return nil
@@ -453,7 +453,7 @@ proc firstChild*(n: PNode): PNode =
proc lastChild*(n: PNode): PNode =
## Returns this node's last child
if n.childNodes != nil and n.childNodes.len() > 0:
if not isNil(n.childNodes) and n.childNodes.len() > 0:
return n.childNodes[n.childNodes.len() - 1]
else:
return nil
@@ -474,7 +474,7 @@ proc `namespaceURI=`*(n: PNode, value: string) =
proc nextSibling*(n: PNode): PNode =
## Returns the next sibling of this node
if n.FParentNode == nil or n.FParentNode.childNodes == nil:
if isNil(n.FParentNode) or isNil(n.FParentNode.childNodes):
return nil
var nLow: int = low(n.FParentNode.childNodes)
var nHigh: int = high(n.FParentNode.childNodes)
@@ -506,7 +506,7 @@ proc parentNode*(n: PNode): PNode =
proc previousSibling*(n: PNode): PNode =
## Returns the previous sibling of this node
if n.FParentNode == nil or n.FParentNode.childNodes == nil:
if isNil(n.FParentNode) or isNil(n.FParentNode.childNodes):
return nil
var nLow: int = low(n.FParentNode.childNodes)
var nHigh: int = high(n.FParentNode.childNodes)
@@ -523,7 +523,7 @@ proc `prefix=`*(n: PNode, value: string) =
if illegalChars in value:
raise newException(EInvalidCharacterErr, "Invalid character")
if n.FNamespaceURI == nil:
if isNil(n.FNamespaceURI):
raise newException(ENamespaceErr, "namespaceURI cannot be nil")
elif value.toLower() == "xml" and n.FNamespaceURI != "http://www.w3.org/XML/1998/namespace":
raise newException(ENamespaceErr,
@@ -549,7 +549,7 @@ proc appendChild*(n: PNode, newChild: PNode) =
## If the newChild is already in the tree, it is first removed.
# Check if n contains newChild
if n.childNodes != nil:
if not isNil(n.childNodes):
for i in low(n.childNodes)..high(n.childNodes):
if n.childNodes[i] == newChild:
raise newException(EHierarchyRequestErr, "The node to append is already in this nodes children.")
@@ -564,7 +564,7 @@ proc appendChild*(n: PNode, newChild: PNode) =
if n.nodeType in childlessObjects:
raise newException(ENoModificationAllowedErr, "Cannot append children to a childless node")
if n.childNodes == nil: n.childNodes = @[]
if isNil(n.childNodes): n.childNodes = @[]
newChild.FParentNode = n
for i in low(n.childNodes)..high(n.childNodes):
@@ -590,7 +590,7 @@ proc cloneNode*(n: PNode, deep: bool): PNode =
# Import the childNodes
var tmp: seq[PNode] = n.childNodes
n.childNodes = @[]
if deep and tmp != nil:
if deep and not isNil(tmp):
for i in low(tmp.len())..high(tmp.len()):
n.childNodes.add(cloneNode(tmp[i], deep))
return newNode
@@ -602,11 +602,11 @@ proc cloneNode*(n: PNode, deep: bool): PNode =
proc hasAttributes*(n: PNode): bool =
## Returns whether this node (if it is an element) has any attributes.
return n.attributes != nil and n.attributes.len() > 0
return not isNil(n.attributes) and n.attributes.len() > 0
proc hasChildNodes*(n: PNode): bool =
## Returns whether this node has any children.
return n.childNodes != nil and n.childNodes.len() > 0
return not isNil(n.childNodes) and n.childNodes.len() > 0
proc insertBefore*(n: PNode, newChild: PNode, refChild: PNode): PNode =
## Inserts the node ``newChild`` before the existing child node ``refChild``.
@@ -616,7 +616,7 @@ proc insertBefore*(n: PNode, newChild: PNode, refChild: PNode): PNode =
if n.FOwnerDocument != newChild.FOwnerDocument:
raise newException(EWrongDocumentErr, "This node belongs to a different document, use importNode.")
if n.childNodes == nil:
if isNil(n.childNodes):
n.ChildNodes = @[]
for i in low(n.childNodes)..high(n.childNodes):
@@ -633,7 +633,7 @@ proc isSupported*(n: PNode, feature: string, version: string): bool =
proc isEmpty(s: string): bool =
if s == "" or s == nil:
if isNil(s) or s == "":
return True
for i in items(s):
if i != ' ':
@@ -647,7 +647,7 @@ proc normalize*(n: PNode) =
var newChildNodes: seq[PNode] = @[]
while True:
if n.childNodes == nil or i >= n.childNodes.len:
if isNil(n.childNodes) or i >= n.childNodes.len:
break
if n.childNodes[i].nodeType == TextNode:
@@ -655,7 +655,7 @@ proc normalize*(n: PNode) =
if PText(n.childNodes[i]).data.isEmpty():
inc(i)
if curTextNode == nil:
if isNil(curTextNode):
curTextNode = n.childNodes[i]
else:
PText(curTextNode).data.add(PText(n.childNodes[i]).data)
@@ -671,7 +671,7 @@ proc normalize*(n: PNode) =
proc removeChild*(n: PNode, oldChild: PNode): PNode =
## Removes the child node indicated by ``oldChild`` from the list of children, and returns it.
if n.childNodes != nil:
if not isNil(n.childNodes):
for i in low(n.childNodes)..high(n.childNodes):
if n.childNodes[i] == oldChild:
result = n.childNodes[i]
@@ -687,7 +687,7 @@ proc replaceChild*(n: PNode, newChild: PNode, oldChild: PNode): PNode =
if n.FOwnerDocument != newChild.FOwnerDocument:
raise newException(EWrongDocumentErr, "This node belongs to a different document, use importNode.")
if n.childNodes != nil:
if not isNil(n.childNodes):
for i in low(n.childNodes)..high(n.childNodes):
if n.childNodes[i] == oldChild:
result = n.childNodes[i]
@@ -756,7 +756,7 @@ proc removeNamedItemNS*(NList: var seq[PNode], namespaceURI: string, localName:
proc setNamedItem*(NList: var seq[PNode], arg: PNode): PNode =
## Adds ``arg`` as a ``Node`` to the ``NList``
## If a node with the same name is already present in this map, it is replaced by the new one.
if NList != nil:
if not isNil(NList):
if NList.len() > 0:
#Check if newChild is from this nodes document
if NList[0].FOwnerDocument != arg.FOwnerDocument:
@@ -764,7 +764,7 @@ proc setNamedItem*(NList: var seq[PNode], arg: PNode): PNode =
#Exceptions End
var item: PNode = NList.getNamedItem(arg.NodeName())
if item == nil:
if isNil(item):
NList.add(arg)
return nil
else:
@@ -780,18 +780,18 @@ proc setNamedItem*(NList: var seq[PNode], arg: PNode): PNode =
proc setNamedItem*(NList: var seq[PAttr], arg: PAttr): PAttr =
## Adds ``arg`` as a ``Node`` to the ``NList``
## If a node with the same name is already present in this map, it is replaced by the new one.
if NList != nil:
if not isNil(NList):
if NList.len() > 0:
# Check if newChild is from this nodes document
if NList[0].FOwnerDocument != arg.FOwnerDocument:
raise newException(EWrongDocumentErr, "This node belongs to a different document, use importNode.")
if arg.FOwnerElement != nil:
if not isNil(arg.FOwnerElement):
raise newException(EInuseAttributeErr, "This attribute is in use by another element, use cloneNode")
# Exceptions end
var item: PAttr = NList.getNamedItem(arg.nodeName())
if item == nil:
if isNil(item):
NList.add(arg)
return nil
else:
@@ -806,7 +806,7 @@ proc setNamedItem*(NList: var seq[PAttr], arg: PAttr): PAttr =
proc setNamedItemNS*(NList: var seq[PNode], arg: PNode): PNode =
## Adds a node using its ``namespaceURI`` and ``localName``
if NList != nil:
if not isNil(NList):
if NList.len() > 0:
# Check if newChild is from this nodes document
if NList[0].FOwnerDocument != arg.FOwnerDocument:
@@ -814,7 +814,7 @@ proc setNamedItemNS*(NList: var seq[PNode], arg: PNode): PNode =
#Exceptions end
var item: PNode = NList.getNamedItemNS(arg.namespaceURI(), arg.localName())
if item == nil:
if isNil(item):
NList.add(arg)
return nil
else:
@@ -829,18 +829,18 @@ proc setNamedItemNS*(NList: var seq[PNode], arg: PNode): PNode =
proc setNamedItemNS*(NList: var seq[PAttr], arg: PAttr): PAttr =
## Adds a node using its ``namespaceURI`` and ``localName``
if NList != nil:
if not isNil(NList):
if NList.len() > 0:
# Check if newChild is from this nodes document
if NList[0].FOwnerDocument != arg.FOwnerDocument:
raise newException(EWrongDocumentErr, "This node belongs to a different document, use importNode.")
if arg.FOwnerElement != nil:
if not isNil(arg.FOwnerElement):
raise newException(EInuseAttributeErr, "This attribute is in use by another element, use cloneNode")
# Exceptions end
var item: PAttr = NList.getNamedItemNS(arg.namespaceURI(), arg.localName())
if item == nil:
if isNil(item):
NList.add(arg)
return nil
else:
@@ -884,20 +884,20 @@ proc tagName*(el: PElement): string =
# Procedures
proc getAttribute*(el: PElement, name: string): string =
## Retrieves an attribute value by ``name``
if el.attributes == nil:
if isNil(el.attributes):
return nil
var attribute = el.attributes.getNamedItem(name)
if attribute != nil:
if not isNil(attribute):
return attribute.value
else:
return nil
proc getAttributeNS*(el: PElement, namespaceURI: string, localName: string): string =
## Retrieves an attribute value by ``localName`` and ``namespaceURI``
if el.attributes == nil:
if isNil(el.attributes):
return nil
var attribute = el.attributes.getNamedItemNS(namespaceURI, localName)
if attribute != nil:
if not isNil(attribute):
return attribute.value
else:
return nil
@@ -905,13 +905,13 @@ proc getAttributeNS*(el: PElement, namespaceURI: string, localName: string): str
proc getAttributeNode*(el: PElement, name: string): PAttr =
## Retrieves an attribute node by ``name``
## To retrieve an attribute node by qualified name and namespace URI, use the `getAttributeNodeNS` method
if el.attributes == nil:
if isNil(el.attributes):
return nil
return el.attributes.getNamedItem(name)
proc getAttributeNodeNS*(el: PElement, namespaceURI: string, localName: string): PAttr =
## Retrieves an `Attr` node by ``localName`` and ``namespaceURI``
if el.attributes == nil:
if isNil(el.attributes):
return nil
return el.attributes.getNamedItemNS(namespaceURI, localName)
@@ -930,27 +930,27 @@ proc getElementsByTagNameNS*(el: PElement, namespaceURI: string, localName: stri
proc hasAttribute*(el: PElement, name: string): bool =
## Returns ``true`` when an attribute with a given ``name`` is specified
## on this element , ``false`` otherwise.
if el.attributes == nil:
if isNil(el.attributes):
return false
return el.attributes.getNamedItem(name) != nil
return not isNil(el.attributes.getNamedItem(name))
proc hasAttributeNS*(el: PElement, namespaceURI: string, localName: string): bool =
## Returns ``true`` when an attribute with a given ``localName`` and
## ``namespaceURI`` is specified on this element , ``false`` otherwise
if el.attributes == nil:
if isNil(el.attributes):
return false
return el.attributes.getNamedItemNS(namespaceURI, localName) != nil
return not isNil(el.attributes.getNamedItemNS(namespaceURI, localName))
proc removeAttribute*(el: PElement, name: string) =
## Removes an attribute by ``name``
if el.attributes != nil:
if not isNil(el.attributes):
for i in low(el.attributes)..high(el.attributes):
if el.attributes[i].FName == name:
el.attributes.delete(i)
proc removeAttributeNS*(el: PElement, namespaceURI: string, localName: string) =
## Removes an attribute by ``localName`` and ``namespaceURI``
if el.attributes != nil:
if not isNil(el.attributes):
for i in low(el.attributes)..high(el.attributes):
if el.attributes[i].FNamespaceURI == namespaceURI and
el.attributes[i].FLocalName == localName:
@@ -959,7 +959,7 @@ proc removeAttributeNS*(el: PElement, namespaceURI: string, localName: string) =
proc removeAttributeNode*(el: PElement, oldAttr: PAttr): PAttr =
## Removes the specified attribute node
## If the attribute node cannot be found raises ``ENotFoundErr``
if el.attributes != nil:
if not isNil(el.attributes):
for i in low(el.attributes)..high(el.attributes):
if el.attributes[i] == oldAttr:
result = el.attributes[i]
@@ -978,12 +978,12 @@ proc setAttributeNode*(el: PElement, newAttr: PAttr): PAttr =
raise newException(EWrongDocumentErr,
"This node belongs to a different document, use importNode.")
if newAttr.FOwnerElement != nil:
if not isNil(newAttr.FOwnerElement):
raise newException(EInuseAttributeErr,
"This attribute is in use by another element, use cloneNode")
# Exceptions end
if el.attributes == nil: el.attributes = @[]
if isNil(el.attributes): el.attributes = @[]
return el.attributes.setNamedItem(newAttr)
proc setAttributeNodeNS*(el: PElement, newAttr: PAttr): PAttr =
@@ -996,12 +996,12 @@ proc setAttributeNodeNS*(el: PElement, newAttr: PAttr): PAttr =
raise newException(EWrongDocumentErr,
"This node belongs to a different document, use importNode.")
if newAttr.FOwnerElement != nil:
if not isNil(newAttr.FOwnerElement):
raise newException(EInuseAttributeErr,
"This attribute is in use by another element, use cloneNode")
# Exceptions end
if el.attributes == nil: el.attributes = @[]
if isNil(el.attributes): el.attributes = @[]
return el.attributes.setNamedItemNS(newAttr)
proc setAttribute*(el: PElement, name: string, value: string) =
@@ -1051,7 +1051,7 @@ proc splitData*(TextNode: PText, offset: int): PText =
TextNode.data = left
var right: string = TextNode.data.substr(offset, TextNode.data.len())
if TextNode.FParentNode != nil and TextNode.FParentNode.childNodes != nil:
if not isNil(TextNode.FParentNode) and not isNil(TextNode.FParentNode.childNodes):
for i in low(TextNode.FParentNode.childNodes)..high(TextNode.FParentNode.childNodes):
if TextNode.FParentNode.childNodes[i] == TextNode:
var newNode: PText = TextNode.FOwnerDocument.createTextNode(right)
@@ -1083,11 +1083,11 @@ proc addEscaped(s: string): string =
proc nodeToXml(n: PNode, indent: int = 0): string =
result = repeatChar(indent, ' ') & "<" & n.nodeName
if n.attributes != nil:
if not isNil(n.attributes):
for i in items(n.attributes):
result.add(" " & i.name & "=\"" & addEscaped(i.value) & "\"")
if n.childNodes == nil or n.childNodes.len() == 0:
if isNil(n.childNodes) or n.childNodes.len() == 0:
result.add("/>") # No idea why this doesn't need a \n :O
else:
# End the beginning of this tag