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GeezerVison is showing github.com — Makes expression cast config point a callable. · hellcoderz/java2python@21f8779

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java2python
- compiler
  - visitor.py
- config
  - default.py
- mod
  - basic.py
test
- Cast0.java
- configs
  - Cast0.py

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`‎java2python/compiler/visitor.py‎`

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+5-10Lines changed: 5 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -699,21 +699,16 @@ def acceptCastExpr(self, node, memo):`
`699`	`699`	`typeName = typeIdent.text`
`700`	`700`	`if typeIdent.type == tokens.QUALIFIED_TYPE_IDENT:`
`701`	`701`	`typeName = typeIdent.firstChild().text`
`702`		`-`
	`702`	`+`
`703`	`703`	`if typeName in tokens.primitiveTypeNames:`
`704`	`704`	`# Cast using the primitive type constructor`
`705`	`705`	`self.fs = typeName + '(' + FS.r + ')'`
`706`	`706`	`else:`
`707`		`- mode = self.config.last('objCastMode')`
`708`		`- if mode == 'drop':`
`709`		`- # Use drop policy`
`710`		`- self.fs = FS.r`
`711`		`- elif mode == 'ctor':`
`712`		`- # Make constructor`
`713`		`- self.fs = FS.l + '(' + FS.r + ')'`
	`707`	`+ handler = self.configHandler('Cast')`
	`708`	`+ if handler:`
	`709`	`+ handler(self, node)`
`714`	`710`	`else:`
`715`		`- warn('Couldn\'t perform cast operation. ' + typeName + \`
`716`		`- ' is not a primitive and objCastMode in the config file has wrong value.')`
	`711`	`+ warn('No handler to perform cast of non-primitive type %s.', typeName)`
`717`	`712`	`self.left, self.right = visitors = factory(parent=self), factory(parent=self)`
`718`	`713`	`self.zipWalk(node.children, visitors, memo)`
`719`	`714`

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`‎java2python/config/default.py‎`

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+6-9Lines changed: 6 additions & 9 deletions

Original file line number	Diff line number	Diff line change
`@@ -168,20 +168,17 @@`
`168`	`168`	`# in method declarations. set to 0 to disable.`
`169`	`169`	`#minIndentParams = 5`
`170`	`170`
	`171`	`+# Specifies handler for cast operations of non-primitive types are handled`
	`172`	`+# (primitive types are automatically handled). Use basic.castDrop to leave`
	`173`	`+# cast expressions out of generated source. Use basic.castCtor to transform`
	`174`	`+# casts into constructor calls. Or you can specify a function of your own.`
	`175`	`+expressionCastHandler = basic.castDrop`
	`176`	`+`
`171`	`177`
`172`	`178`	`# Values below are used by the handlers. They're here for`
`173`	`179`	`# convenience.`
`174`	`180`
`175`	`181`
`176`		`-# Specifies how cast operations of non-primitive types are handled`
`177`		`-# (primitive types are automatically handled)`
`178`		`-# Valid values:`
`179`		`-# - 'drop': completely drops type and cast info`
`180`		`-# - 'ctor': converts the cast in a constructor call`
`181`		`-# E.g.: (Cast) x -> Cast(x)`
`182`		`-objCastMode = 'drop'`
`183`		`-`
`184`		`-`
`185`	`182`	`# module output subs.`
`186`	`183`	`moduleOutputSubs = [`
`187`	`184`	`(r'System\.out\.println\((.*)\)', r'print \1'),`

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`‎java2python/mod/basic.py‎`

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+8Lines changed: 8 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -7,6 +7,8 @@`
`7`	`7`	`from os import path`
`8`	`8`	`from re import sub as rxsub`
`9`	`9`
	`10`	`+from java2python.lib import FS`
	`11`	`+`
`10`	`12`
`11`	`13`	`def shebangLine(module):`
`12`	`14`	`""" yields the canonical python shebang line. """`
`@@ -237,3 +239,9 @@ def moveStaticExpressions(cls):`
`237`	`239`	`module.adopt(newExpr, index=len(module.children))`
`238`	`240`
`239`	`241`
	`242`	`+def castCtor(expr, node):`
	`243`	`+ expr.fs = FS.l + '(' + FS.r + ')'`
	`244`	`+`
	`245`	`+`
	`246`	`+def castDrop(expr, node):`
	`247`	`+ expr.fs = FS.r`

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`‎test/Cast0.java‎`

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+40Lines changed: 40 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,40 @@`
	`1`	`+interface Something {`
	`2`	`+ public int foo();`
	`3`	`+}`
	`4`	`+`
	`5`	`+`
	`6`	`+interface SomethingElse {`
	`7`	`+ public int foo();`
	`8`	`+}`
	`9`	`+`
	`10`	`+`
	`11`	`+class Both implements Something {`
	`12`	`+ public int foo() {`
	`13`	`+ return 100;`
	`14`	`+ }`
	`15`	`+}`
	`16`	`+`
	`17`	`+class What extends Both {`
	`18`	`+ public int foo() {`
	`19`	`+ return 200;`
	`20`	`+ }`
	`21`	`+}`
	`22`	`+`
	`23`	`+`
	`24`	`+class Cast0 {`
	`25`	`+ public static void main(String[] args) {`
	`26`	`+ int x = 33;`
	`27`	`+ Integer ix = (Integer) x;`
	`28`	`+ System.out.println(x);`
	`29`	`+ System.out.println(ix);`
	`30`	`+`
	`31`	`+ What w = new What();`
	`32`	`+`
	`33`	`+ System.out.println( w.foo() );`
	`34`	`+`
	`35`	`+ Both b = (Both) w;`
	`36`	`+`
	`37`	`+ System.out.println( b.foo() );`
	`38`	`+`
	`39`	`+ }`
	`40`	`+}`

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`‎test/configs/Cast0.py‎`

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+3Lines changed: 3 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+from java2python.mod import basic`
	`2`	`+`
	`3`	`+expressionCastHandler = basic.castDrop`

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