fixes for Nim 0.20.0, closes #1

Author: ba0f3

.travis.yml

@@ -0,0 +1,8 @@
+sudo: required
+services:
+  - docker
+before_install:
+  - docker pull nimlang/nim
+script:
+  - docker run nimlang/nim nim --version
+  - docker run -v "$(pwd):/project" -w /project nimlang/nim sh -c "nimble install -dy && nimble test"

src/xml.nim

@@ -111,7 +111,7 @@ iterator tokens*(input: string): XmlToken {.inline.} =
       inc(pos)
       var next_ch = input.find(ch, pos)
       if next_ch == -1:
-        error(fmt"unable to find matching string quote last found {pos}") 
+        error(fmt"unable to find matching string quote last found {pos}")
       yield token(STRING, input[pos..<next_ch])
       pos = next_ch+1
     of '>':
@@ -167,7 +167,7 @@ proc newNode(name: string, text = ""): XmlNode =
 proc child*(node: XmlNode, name: string): XmlNode =
   ## finds the first element of `node` with name `name`
   ## returns `nil` on failure
-  if not node.children.isNil:
+  if node.children.len > 0:
     for n in node.children:
       if n.name == name:
         result = n
@@ -179,22 +179,22 @@ proc `$`*(node: XmlNode): string =
   if not node.attributes.isNil:
     for k, v in node.attributes.pairs:
       result.add(fmt" {k}=""{v}""")
-  if node.text.len == 0 and node.children.isNil:
+  if node.text.len == 0 and node.children.len == 0:
     result.add(" />")
     return
   elif node.text.len > 0:
     result.add(">" & node.text)
   else:
     result.add(">")
 
-  if not node.children.isNil:
+  if node.children.len > 0:
     for child in node.children:
       result.add($child)
   result.add("</" & node.name & ">")
 
 
 proc addChild*(node, child: XmlNode) =
-  if node.children.isNil:
+  if node.children.len == 0:
     node.children = @[]
   node.children.add(child)
 
@@ -302,7 +302,3 @@ when isMainModule:
 
   assert class1.children[3].hasAttr("type")
   assert class1.children[3].attr("type") == "Date"
-
-
-
-

src/xml/selector.nim

@@ -115,7 +115,7 @@ proc searchCombined(parent: XmlNode, selectors: seq[Selector], found: var seq[Xm
     matches = @[]
 
     for j in starts:
-      if parent.children.isNil:
+      if parent.children.len == 0:
         continue
       for k in j..parent.children.len-1:
         var child = parent.children[k]
@@ -148,7 +148,7 @@ proc parseSelector(token: string): Selector =
   # Type selector
   elif token =~ pselectors:
     for i in 0..matches.len-1:
-      if matches[i].isNil:
+      if matches[i].len == 0:
         continue
 
       let ch = matches[i][0]

xml.nimble

@@ -1,11 +1,11 @@
 # Package
 
-version       = "0.1.1"
+version       = "0.1.2"
 author        = "Huy Doan"
 description   = "Pure Nim XML parser"
 license       = "MIT"
 srcDir        = "src"
 
 # Dependencies
 
-requires "nim >= 0.18.1"
+requires "nim >= 0.19.6"