yzhliu commented on a change in pull request #10660: [MXNET-357] New Scala API
Design (Symbol)
URL: https://github.com/apache/incubator-mxnet/pull/10660#discussion_r185150798
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File path:
scala-package/macros/src/main/scala/org/apache/mxnet/SymbolMacro.scala
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@@ -136,20 +98,67 @@ private[mxnet] object SymbolImplMacros {
result
}
+ // Convert C++ Types to Scala Types
+ private def typeConversion(in : String, argType : String = "") : String = {
+ in match {
+ case "Shape(tuple)" | "ShapeorNone" => "Shape"
+ case "Symbol" | "NDArray" | "NDArray-or-Symbol" => "Symbol"
+ case "Symbol[]" | "NDArray[]" | "NDArray-or-Symbol[]" |
"SymbolorSymbol[]" => "Array[Symbol]"
+ case "float" | "real_t" => "MXFloat"
+ case "int" | "intorNone" | "int(non-negative)" => "Int"
+ case "long" | "long(non-negative)" => "Long"
+ case "double" => "Double"
+ case "string" => "String"
+ case "boolean" => "Boolean"
+ case "tupleof<float>" => "Any"
+ case default => throw new IllegalArgumentException(
+ s"Invalid type for args: $default, $argType")
+ }
+ }
+
+ private def argumentCleaner(argType : String) : (String, Boolean) = {
+ val spaceRemoved = argType.replaceAll("\\s+", "")
+ var commaRemoved : Array[String] = new Array[String](0)
+ // Deal with the case e.g: stype : {'csr', 'default', 'row_sparse'}
+ if (spaceRemoved.charAt(0)== '{') {
+ val endIdx = spaceRemoved.indexOf('}')
+ commaRemoved = spaceRemoved.substring(endIdx + 1).split(",")
+ // commaRemoved(0) = spaceRemoved.substring(0, endIdx+1)
+ commaRemoved(0) = "string"
+ } else {
+ commaRemoved = spaceRemoved.split(",")
+ }
+ // Optional Field
+ if (commaRemoved.length >= 3) {
Review comment:
We'd better make the pattern clear. For example, do assertion
```scala
if (commaRemoved.length >= 3) {
// arg: Type, optional, default = Null
require(commaRemoved[1] == "required")
require(commaRemoved[2].startsWith("default = ")
```
so that if some other patterns appear one day, we can fail immediately and
have chance to fix it before it leaks to public and causes strange error.
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