backendconvert.icl 83.6 KB
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/*
	module owner: Ronny Wichers Schreur
*/
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implementation module backendconvert

import code from library "backend_library"
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import compilerSwitches
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import StdEnv

import frontend
import backend
import backendsupport, backendpreprocess
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import RWSDebug
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// trace macro
(-*->) infixl
(-*->) value trace
	:==	value // ---> trace
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/*
sfoldr op r l
	:== foldr l
	where
		foldr [] = r
		foldr [a:x] = \s -> op a (foldr x) s
*/
sfoldr op r l s
	:== foldr l s
	where
		foldr [] = r
		foldr [a:x] = op a (foldr x)
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// fix spelling, this will be removed when cases are implemented in the back end
:: BackEndBody :== BackendBody
BackEndBody x :== BackendBody x


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:: BEMonad a :== St !*BackEndState !a
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:: BackEnder :== *BackEndState -> *BackEndState
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//
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:: *BackEndState = {bes_backEnd :: !BackEnd, bes_varHeap :: !*VarHeap, bes_attrHeap :: !*AttrVarHeap, bes_attr_number :: !Int}
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appBackEnd f beState
	:== {beState & bes_backEnd = bes_backEnd}
	where
		bes_backEnd = f beState.bes_backEnd
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accBackEnd f beState
	:== accBackEnd
	where
		accBackEnd
			# (result, bes_backEnd) =	f beState.bes_backEnd
			#! beState2 = {beState & bes_backEnd = bes_backEnd}
			= (result,beState2)
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accVarHeap f beState
	:== (result, {beState & bes_varHeap = varHeap})
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	where
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		(result, varHeap) =	f beState.bes_varHeap
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accAttrHeap f beState
	:== (result, {beState & bes_attrHeap = attrHeap})
	where
		(result, attrHeap) =	f beState.bes_attrHeap


read_from_var_heap :: VarInfoPtr BackEndState -> (VarInfo, BackEndState)
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read_from_var_heap ptr beState
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	= (result, {beState & bes_varHeap = varHeap})
where
		(result, varHeap) =	readPtr ptr beState.bes_varHeap
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write_to_var_heap ptr v beState
	= {beState & bes_varHeap = writePtr ptr v beState.bes_varHeap}
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read_from_attr_heap ptr beState
	= (result, {beState & bes_attrHeap = attrHeap})
where
		(result, attrHeap) =	readPtr ptr beState.bes_attrHeap

write_to_attr_heap ptr v beState
	= {beState & bes_attrHeap = writePtr ptr v beState.bes_attrHeap}
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/*
read_from_var_heap ptr heap be
	= (sreadPtr ptr heap,be)
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::	*BackEndState :== BackEnd

appBackEnd f beState :== f beState
accBackEnd f beState :== f beState
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accVarHeap f beState :== f beState
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*/
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beApFunction0 f
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	:== appBackEnd f
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beApFunction1 f m1
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	:== m1 ==> \a1
	->	appBackEnd (f a1)
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beApFunction2 f m1 m2
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	appBackEnd (f a1 a2)
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beApFunction3 f m1 m2 m3
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	appBackEnd (f a1 a2 a3)
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beApFunction4 f m1 m2 m3 m4
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	appBackEnd (f a1 a2 a3 a4)
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beApFunction5 f m1 m2 m3 m4 m5
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	appBackEnd (f a1 a2 a3 a4 a5)
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beApFunction6 f m1 m2 m3 m4 m5 m6
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	m6 ==> \a6
	->	appBackEnd (f a1 a2 a3 a4 a5 a6)
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beApFunction7 f m1 m2 m3 m4 m5 m6 m7
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	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	m6 ==> \a6
	->	m7 ==> \a7
	->	appBackEnd (f a1 a2 a3 a4 a5 a6 a7)

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beFunction0 f
	:== accBackEnd f
beFunction1 f m1
	:== m1 ==> \a1
	->	accBackEnd (f a1)
beFunction2 f m1 m2
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	accBackEnd (f a1 a2)
beFunction3 f m1 m2 m3
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	accBackEnd (f a1 a2 a3)
beFunction4 f m1 m2 m3 m4
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	accBackEnd (f a1 a2 a3 a4)
beFunction5 f m1 m2 m3 m4 m5
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	accBackEnd (f a1 a2 a3 a4 a5)
beFunction6 f m1 m2 m3 m4 m5 m6
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	m6 ==> \a6
	->	accBackEnd (f a1 a2 a3 a4 a5 a6)
beFunction7 f m1 m2 m3 m4 m5 m6 m7
	:== m1 ==> \a1
	->	m2 ==> \a2
	->	m3 ==> \a3
	->	m4 ==> \a4
	->	m5 ==> \a5
	->	m6 ==> \a6
	->	m7 ==> \a7
	->	accBackEnd (f a1 a2 a3 a4 a5 a6 a7)

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changeArrayFunctionIndex selectIndex
	:== selectIndex

beBoolSymbol value
	:==	beFunction0 (BEBoolSymbol value)
beLiteralSymbol type value
	:==	beFunction0 (BELiteralSymbol type value)
beFunctionSymbol functionIndex moduleIndex
	:==	beFunction0 (BEFunctionSymbol functionIndex moduleIndex)
beSpecialArrayFunctionSymbol arrayFunKind functionIndex moduleIndex
	:==	beFunction0 (BESpecialArrayFunctionSymbol arrayFunKind (changeArrayFunctionIndex functionIndex) moduleIndex)
beDictionarySelectFunSymbol
	:==	beFunction0 BEDictionarySelectFunSymbol
beDictionaryUpdateFunSymbol
	:==	beFunction0 BEDictionaryUpdateFunSymbol
beConstructorSymbol moduleIndex constructorIndex
	:==	beFunction0 (BEConstructorSymbol constructorIndex moduleIndex)
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beOverloadedConsSymbol moduleIndex constructorIndex deconsModuleIndex deconsIndex
	:==	beFunction0 (BEOverloadedConsSymbol constructorIndex moduleIndex deconsIndex deconsModuleIndex)

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beFieldSymbol fieldIndex moduleIndex
	:==	beFunction0 (BEFieldSymbol fieldIndex moduleIndex)
beTypeSymbol typeIndex moduleIndex
	:==	beFunction0 (BETypeSymbol typeIndex moduleIndex)
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beBasicSymbol symbolIndex
	:==	beFunction0 (BEBasicSymbol symbolIndex)
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beDontCareDefinitionSymbol
	:==	beFunction0 BEDontCareDefinitionSymbol
beNoArgs
	:==	beFunction0 BENoArgs
beArgs
	:==	beFunction2 BEArgs
beNoTypeArgs
	:==	beFunction0 BENoTypeArgs
beTypeArgs
	:==	beFunction2 BETypeArgs
beNormalNode
	:==	beFunction2 BENormalNode
beIfNode
	:==	beFunction3 BEIfNode
beGuardNode
	:==	beFunction7 BEGuardNode
beSelectorNode selectorKind
	:==	beFunction2 (BESelectorNode selectorKind)
beUpdateNode
	:==	beFunction1 BEUpdateNode
beNormalTypeNode
	:==	beFunction2 BENormalTypeNode
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beAddForAllTypeVariables
	:==	beFunction2 BEAddForAllTypeVariables
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beVarTypeNode name
	:==	beFunction0 (BEVarTypeNode name)
beRuleAlt lineNumber
	:==	beFunction5 (BERuleAlt lineNumber)
beNoRuleAlts
	:==	beFunction0 BENoRuleAlts
beRuleAlts
	:==	beFunction2 BERuleAlts
beTypeAlt
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	:==	beFunction3 BETypeAlt
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beRule index isCaf
	:==	beFunction2 (BERule index isCaf)
beNoRules
	:==	beFunction0 BENoRules
beRules
	:==	beFunction2 BERules
beNodeDef sequenceNumber
	:==	beFunction1 (BENodeDef sequenceNumber)
beNoNodeDefs
	:==	beFunction0 BENoNodeDefs
beNodeDefs
	:==	beFunction2 BENodeDefs
beStrictNodeId
	:==	beFunction1 BEStrictNodeId
beNoStrictNodeIds
	:==	beFunction0 BENoStrictNodeIds
beStrictNodeIds
	:==	beFunction2 BEStrictNodeIds
beNodeIdNode
	:==	beFunction2 BENodeIdNode
beNodeId sequenceNumber
	:==	beFunction0 (BENodeId sequenceNumber)
beWildCardNodeId
	:==	beFunction0 BEWildCardNodeId
beConstructor
	:==	beFunction1 BEConstructor
beNoConstructors
	:==	beFunction0 BENoConstructors
beConstructors
	:==	beFunction2 BEConstructors
beNoFields
	:==	beFunction0 BENoFields
beFields
	:==	beFunction2 BEFields
beField fieldIndex moduleIndex 
	:==	beFunction1 (BEField fieldIndex moduleIndex)
beAnnotateTypeNode annotation
	:==	beFunction1 (BEAnnotateTypeNode annotation)
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beAttributeTypeNode
	:==	beFunction2 BEAttributeTypeNode
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beDeclareRuleType functionIndex moduleIndex name
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	:==	beApFunction0 (BEDeclareRuleType functionIndex moduleIndex name)
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beDefineRuleType functionIndex moduleIndex
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	:==	beApFunction1 (BEDefineRuleType functionIndex moduleIndex)
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beCodeAlt lineNumber
	:==	beFunction3 (BECodeAlt lineNumber)
beString string
	:==	beFunction0 (BEString string)
beStrings
	:==	beFunction2 BEStrings
beNoStrings
	:==	beFunction0 BENoStrings
beCodeParameter location
	:==	beFunction1 (BECodeParameter location)
beCodeParameters
	:==	beFunction2 BECodeParameters
beNoCodeParameters
	:==	beFunction0 BENoCodeParameters
beAbcCodeBlock inline
	:==	beFunction1 (BEAbcCodeBlock inline)
beAnyCodeBlock
	:==	beFunction3 BEAnyCodeBlock
beDeclareNodeId number lhsOrRhs name
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	:==	beApFunction0 (BEDeclareNodeId number lhsOrRhs name)
beAdjustArrayFunction backendId functionIndex moduleIndex
	:==	beApFunction0 (BEAdjustArrayFunction backendId functionIndex moduleIndex)
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beFlatType
	:==	beFunction2 BEFlatType
beNoTypeVars
	:==	beFunction0 BENoTypeVars
beTypeVars
	:==	beFunction2 BETypeVars
beTypeVar name
	:==	beFunction0 (BETypeVar name)
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beTypeVarListElem
	:==	beFunction2 BETypeVarListElem
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beExportType dclTypeIndex iclTypeIndex
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	:==	beApFunction0 (BEExportType dclTypeIndex iclTypeIndex)
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beExportConstructor dclConstructorIndex iclConstructorIndex
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	:==	beApFunction0 (BEExportConstructor dclConstructorIndex iclConstructorIndex)
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beExportField dclFieldIndex iclFieldIndex
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	:==	beApFunction0 (BEExportField dclFieldIndex iclFieldIndex)
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beExportFunction dclIndexFunctionIndex iclFunctionIndex
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	:==	beApFunction0 (BEExportFunction dclIndexFunctionIndex iclFunctionIndex)
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beTupleSelectNode arity index
	:==	beFunction1 (BETupleSelectNode arity index)
beMatchNode arity
	:==	beFunction2 (BEMatchNode arity)
beDefineImportedObjsAndLibs
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	:== beApFunction2 BEDefineImportedObjsAndLibs
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beAbsType
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	:== beApFunction1 BEAbsType
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beSwitchNode
	:==	beFunction2 BESwitchNode
beCaseNode symbolArity
	:== beFunction4 (BECaseNode symbolArity)
bePushNode symbolArity
	:== beFunction3 (BEPushNode symbolArity)
beDefaultNode
	:==	beFunction3 BEDefaultNode
beNoNodeIds
	:==	beFunction0 BENoNodeIds
beNodeIds
	:==	beFunction2 BENodeIds
beNodeIdListElem
	:==	beFunction1 BENodeIdListElem
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beAttributeKind
	:== beFunction1 BEAttributeKind
beNoAttributeKinds
	:== beFunction0 BENoAttributeKinds
beAttributeKinds
	:== beFunction2 BEAttributeKinds
beUniVarEquation
	:== beFunction2 BEUniVarEquation
beNoUniVarEquations
	:== beFunction0 BENoUniVarEquations
beUniVarEquationsList
	:== beFunction2 BEUniVarEquationsList
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beBindSpecialModule specialIdentIndex moduleIndex
	:== beApFunction0 (BEBindSpecialModule specialIdentIndex moduleIndex)
beBindSpecialFunction specialIdentIndex functionIndex moduleIndex
	:== beApFunction0 (BEBindSpecialFunction specialIdentIndex functionIndex moduleIndex)
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// temporary hack
beDynamicTempTypeSymbol
	:== beFunction0 BEDynamicTempTypeSymbol
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notYetImplementedExpr :: Expression
notYetImplementedExpr
	=	(BasicExpr (BVS "\"error in compiler (something was not implemented by lazy Ronny)\"") BT_Int)

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backEndConvertModules :: PredefinedSymbols FrontEndSyntaxTree !Int *VarHeap *AttrVarHeap *BackEnd -> (!*VarHeap, *AttrVarHeap, !*BackEnd)
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/*
backEndConvertModules p s main_dcl_module_n v be
	= (newHeap,backEndConvertModulesH p s v be)
*/
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backEndConvertModules p s main_dcl_module_n var_heap attr_var_heap be
	# {bes_varHeap,bes_attrHeap,bes_backEnd} = backEndConvertModulesH p s main_dcl_module_n {bes_varHeap=var_heap,bes_attrHeap=attr_var_heap,bes_backEnd=be, bes_attr_number = 0}
	= (bes_varHeap,bes_attrHeap,bes_backEnd)
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import RWSDebug

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backEndConvertModulesH :: PredefinedSymbols FrontEndSyntaxTree !Int *BackEndState -> *BackEndState
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backEndConvertModulesH predefs {fe_icl = 
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	fe_icl =: {icl_name, icl_functions, icl_common,icl_global_functions,icl_imported_objects,icl_used_module_numbers, icl_modification_time},
	fe_components, fe_dcls, fe_arrayInstances}
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	main_dcl_module_n backEnd
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	// sanity check ...
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//	| cIclModIndex <> kIclModuleIndex || cPredefinedModuleIndex <> kPredefinedModuleIndex
//		=	undef <<- "backendconvert, backEndConvertModules: module index mismatch"
	// ... sanity check
/*
	#  backEnd
		=	ruleDoesNotMatch 1 backEnd
			with
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				ruleDoesNotMatch 0 backEnd
					=	backEnd
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	#  backEnd
		=	abort "front end abort" backEnd
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*/	#! backEnd = appBackEnd (BESetMainDclModuleN main_dcl_module_n) backEnd
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	#! backEnd
		=	appBackEnd (BEDeclareModules (size fe_dcls)) backEnd
	#! backEnd
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		=	predefineSymbols fe_dcls.[cPredefinedModuleIndex] predefs backEnd
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	#  currentDcl
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	   	=	fe_dcls.[main_dcl_module_n]
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/*
	#  backEnd
		=	backEnd ->>
				(	"dcl conversions"
				,	currentDcl.dcl_conversions
				,	"dcl constructors"
				,	[constructor.cons_symb.id_name \\ constructor <-: currentDcl.dcl_common.com_cons_defs]
				,	"dcl selectors"
				,	[selector.sd_symb.id_name \\ selector <-: currentDcl.dcl_common.com_selector_defs]
				,	"dcl types"
				,	[type.td_name.id_name \\ type <-: currentDcl.dcl_common.com_type_defs]
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				,	"icl constructors"
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				,	[constructor.cons_symb.id_name \\ constructor <-: icl_common.com_cons_defs]
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				,	"icl selectors"
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				,	[selector.sd_symb.id_name \\ selector <-: icl_common.com_selector_defs]
				,	"icl types"
				,	[type.td_name.id_name \\ type <-: icl_common.com_type_defs]
				)
*/
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	#! backEnd
		=	declareCurrentDclModule fe_icl fe_dcls.[main_dcl_module_n] main_dcl_module_n (backEnd -*-> "declareCurrentDclModule")
	#! backEnd
		=	declareOtherDclModules fe_dcls main_dcl_module_n icl_used_module_numbers (backEnd -*-> "declareOtherDclModules")
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// tempory hack
	#! backEnd
		=	declareDynamicTemp predefs (backEnd -*-> "declareDynamicTemp")

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	#! backEnd
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		=	defineDclModule main_dcl_module_n fe_dcls.[main_dcl_module_n] (backEnd -*-> "defineDclModule(cIclMoIndex)")
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	#! backEnd
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		=	defineOtherDclModules fe_dcls main_dcl_module_n icl_used_module_numbers (backEnd -*-> "defineOtherDclModules")
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	#! backEnd
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		=	appBackEnd (BEDeclareIclModule icl_name.id_name icl_modification_time (size icl_functions) (size icl_common.com_type_defs) (size icl_common.com_cons_defs) (size icl_common.com_selector_defs)) (backEnd -*-> "BEDeclareIclModule")
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	#! backEnd
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		=	declareFunctionSymbols icl_functions functionIndices icl_global_functions (backEnd -*-> "declareFunctionSymbols")
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	#! backEnd
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		=	declare main_dcl_module_n icl_common (backEnd -*-> "declare (main_dcl_module_n)")
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	#! backEnd
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		=	declareArrayInstances /*fe_arrayInstances.ali_instances_range*/fe_arrayInstances.ali_array_first_instance_indices predefs main_dcl_module_n icl_functions fe_dcls (backEnd -*-> "declareArrayInstances")
	#! backEnd
		=	declareListInstances fe_arrayInstances.ali_list_first_instance_indices PD_UListClass predefs main_dcl_module_n icl_functions fe_dcls backEnd
	#! backEnd
		=	declareListInstances fe_arrayInstances.ali_tail_strict_list_first_instance_indices PD_UTSListClass predefs main_dcl_module_n icl_functions fe_dcls backEnd
	#! backEnd
		=	adjustArrayFunctions /*fe_arrayInstances.ali_instances_range*/fe_arrayInstances.ali_array_first_instance_indices predefs main_dcl_module_n icl_functions fe_dcls icl_common.com_instance_defs icl_used_module_numbers (backEnd -*-> "adjustArrayFunctions")
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	#! backEnd
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		=	adjustStrictListFunctions fe_arrayInstances.ali_list_first_instance_indices fe_arrayInstances.ali_tail_strict_list_first_instance_indices predefs fe_dcls icl_used_module_numbers main_dcl_module_n backEnd;
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	#! (rules, backEnd)
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		=	convertRules [(index, icl_functions.[index]) \\ (_, index) <- functionIndices] main_dcl_module_n predefs.[PD_DummyForStrictAliasFun].pds_ident (backEnd -*-> "convertRules")
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	#! backEnd
		=	appBackEnd (BEDefineRules rules) (backEnd -*-> "BEDefineRules")
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	#! backEnd
		=	beDefineImportedObjsAndLibs
				(convertStrings [imported.io_name \\ imported <- icl_imported_objects | not imported.io_is_library])
				(convertStrings [imported.io_name \\ imported <- icl_imported_objects | imported.io_is_library])
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				(backEnd -*-> "beDefineImportedObjsAndLibs")
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	#! backEnd
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		=	markExports fe_dcls.[main_dcl_module_n] dcl_common.com_class_defs dcl_common.com_type_defs icl_common.com_class_defs icl_common.com_type_defs (backEnd -*-> "markExports")
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			with
				dcl_common
					=	currentDcl.dcl_common
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	# backEnd = bindSpecialIdents predefs icl_used_module_numbers backEnd
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	#! backEnd = removeExpandedTypesFromDclModules fe_dcls icl_used_module_numbers backEnd
	=	(backEnd -*-> "backend done")
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	where
		functionIndices
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			=	flatten [[(componentIndex, member) \\ member <- group.group_members] \\ group <-: fe_components & componentIndex <- [1..]]
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declareOtherDclModules :: {#DclModule} Int NumberSet -> BackEnder
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declareOtherDclModules dcls main_dcl_module_n used_module_numbers
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	=	foldStateWithIndexA declareOtherDclModule dcls
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where
	declareOtherDclModule :: ModuleIndex DclModule -> BackEnder
	declareOtherDclModule moduleIndex dclModule
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		| moduleIndex == main_dcl_module_n || moduleIndex == cPredefinedModuleIndex || not (inNumberSet moduleIndex used_module_numbers)
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			=	identity
		// otherwise
			=	declareDclModule moduleIndex dclModule

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defineOtherDclModules :: {#DclModule} Int NumberSet -> BackEnder
defineOtherDclModules dcls main_dcl_module_n used_module_numbers
	=	foldStateWithIndexA defineOtherDclModule dcls
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where
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	defineOtherDclModule :: ModuleIndex DclModule -> BackEnder
	defineOtherDclModule moduleIndex dclModule
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		| moduleIndex == main_dcl_module_n || moduleIndex == cPredefinedModuleIndex || not (inNumberSet moduleIndex used_module_numbers)
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			=	identity
		// otherwise
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			=	defineDclModule moduleIndex dclModule
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isSystem :: ModuleKind -> Bool
isSystem MK_System
	=	True
isSystem MK_Module
	=	False
isSystem _
	=	abort "backendconvert:isSystem, unknown module kind"

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declareCurrentDclModule :: IclModule DclModule Int -> BackEnder
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declareCurrentDclModule _ {dcl_module_kind=MK_None} _
	=	identity
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declareCurrentDclModule {icl_common} {dcl_name, dcl_modification_time, dcl_functions, dcl_module_kind, dcl_common} main_dcl_module_n
	=	appBackEnd (BEDeclareDclModule main_dcl_module_n dcl_name.id_name dcl_modification_time  (isSystem dcl_module_kind) (size dcl_functions) (size icl_common.com_type_defs) (size dcl_common.com_cons_defs) (size dcl_common.com_selector_defs))
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declareDclModule :: ModuleIndex DclModule -> BackEnder
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declareDclModule moduleIndex {dcl_name, dcl_modification_time, dcl_common, dcl_functions, dcl_module_kind}
	=	appBackEnd (BEDeclareDclModule moduleIndex dcl_name.id_name dcl_modification_time (isSystem dcl_module_kind) (size dcl_functions) (size dcl_common.com_type_defs) (size dcl_common.com_cons_defs) (size dcl_common.com_selector_defs))
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/*
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defineCurrentDclModule :: IclModule DclModule {#Int} -> BackEnder
defineCurrentDclModule {icl_common} {dcl_name, dcl_common, dcl_functions, dcl_is_system, dcl_conversions} typeConversions
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	=	declareCurrentDclModuleTypes icl_common.com_type_defs typeConversions
	o`	defineCurrentDclModuleTypes dcl_common.com_cons_defs dcl_common.com_selector_defs dcl_common.com_type_defs typeConversions
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*/
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defineDclModule :: ModuleIndex DclModule -> BackEnder
defineDclModule moduleIndex {dcl_name, dcl_common, dcl_functions,dcl_instances}
	=	declare moduleIndex dcl_common
	o`	declareFunTypes moduleIndex dcl_functions dcl_instances.ir_from
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removeExpandedTypesFromDclModules :: {#DclModule} NumberSet -> BackEnder
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removeExpandedTypesFromDclModules dcls used_module_numbers
	=	foldStateWithIndexA removeExpandedTypesFromDclModule dcls
where
	removeExpandedTypesFromDclModule :: ModuleIndex DclModule -> BackEnder
	removeExpandedTypesFromDclModule moduleIndex dclModule=:{dcl_functions}
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		| moduleIndex == cPredefinedModuleIndex || not (inNumberSet moduleIndex used_module_numbers)
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			= identity
			= foldStateWithIndexA (removeExpandedTypesFromFunType moduleIndex)  dcl_functions
			where
				removeExpandedTypesFromFunType :: ModuleIndex Index FunType -> BackEnder
				removeExpandedTypesFromFunType moduleIndex functionIndex {ft_symb, ft_type_ptr}
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					= \be0 ->	let (ft_type,be) = read_from_var_heap ft_type_ptr be0 in
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						(case ft_type of
							VI_ExpandedType expandedType
								->	write_to_var_heap ft_type_ptr VI_Empty	
							_
								->	identity) be
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:: DeclVarsInput :== Ident
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class declareVars a :: a !DeclVarsInput -> BackEnder
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instance declareVars [a] | declareVars a where
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	declareVars :: [a] !DeclVarsInput -> BackEnder | declareVars a
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	declareVars list dvInput
		=	foldState (flip declareVars dvInput) list

instance declareVars (Ptr VarInfo) where
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	declareVars varInfoPtr _
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		=	declareVariable BELhsNodeId varInfoPtr "_var???"	// +++ name
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instance declareVars FreeVar where
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	declareVars :: FreeVar !DeclVarsInput -> BackEnder
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	declareVars freeVar _
		=	declareVariable BELhsNodeId freeVar.fv_info_ptr freeVar.fv_name.id_name
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instance declareVars LetBind where
	declareVars :: LetBind !DeclVarsInput -> BackEnder
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	declareVars {lb_src=App {app_symb, app_args=[Var _:_]}, lb_dst=freeVar} aliasDummyId
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		| not (isNilPtr app_symb.symb_name.id_info) && app_symb.symb_name==aliasDummyId
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			= identity		// we have an alias. Don't declare the same variable twice
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		= declareVariable BERhsNodeId freeVar.fv_info_ptr freeVar.fv_name.id_name
	declareVars {lb_dst=freeVar} _
		= declareVariable BERhsNodeId freeVar.fv_info_ptr freeVar.fv_name.id_name
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declareVariable :: Int (Ptr VarInfo) {#Char} -> BackEnder
declareVariable lhsOrRhs varInfoPtr name
	= \be0 -> let (variable_sequence_number,be) = getVariableSequenceNumber varInfoPtr be0 in
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		beDeclareNodeId variable_sequence_number lhsOrRhs name be
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instance declareVars (Optional a) | declareVars a where
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	declareVars :: (Optional a) !DeclVarsInput -> BackEnder | declareVars a
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	declareVars (Yes x) dvInput
		=	declareVars x dvInput
	declareVars No _
		=	identity

instance declareVars FunctionPattern where
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	declareVars :: FunctionPattern !DeclVarsInput -> BackEnder
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	declareVars (FP_Algebraic _ freeVars optionalVar) dvInput
		=	declareVars freeVars dvInput
		o`	declareVars optionalVar dvInput
	declareVars (FP_Variable freeVar) dvInput
		=	declareVars freeVar dvInput
	declareVars (FP_Basic _ optionalVar) dvInput
		=	declareVars optionalVar dvInput
	declareVars FP_Empty dvInput
		=	identity

instance declareVars Expression where
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	declareVars :: Expression !DeclVarsInput -> BackEnder
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	declareVars (Let {let_strict_binds, let_lazy_binds, let_expr}) dvInput
		=	declareVars let_strict_binds dvInput
		o`	declareVars let_lazy_binds dvInput
		o`	declareVars let_expr dvInput
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	declareVars (Conditional {if_cond, if_then, if_else}) dvInput
		=	declareVars if_cond dvInput
		o`	declareVars if_then dvInput
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		o`	declareVars if_else dvInput
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	declareVars (Case caseExpr) dvInput
		=	declareVars caseExpr dvInput
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	declareVars (AnyCodeExpr _ outParams _) _
		=	foldState declVar outParams 
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	  where
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		declVar {bind_dst=freeVar} 
			= declareVariable BERhsNodeId freeVar.fv_info_ptr freeVar.fv_name.id_name
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	declareVars _ _
		=	identity

instance declareVars TransformedBody where
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	declareVars :: TransformedBody !DeclVarsInput -> BackEnder
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	declareVars {tb_args, tb_rhs} dvInput
		=	declareVars tb_args dvInput
		o`	declareVars tb_rhs dvInput

instance declareVars BackendBody where
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	declareVars :: BackendBody !DeclVarsInput -> BackEnder
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	declareVars {bb_args, bb_rhs} dvInput
		=	declareVars bb_args dvInput
		o`	declareVars bb_rhs dvInput

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instance declareVars Case where
	declareVars {case_expr, case_guards, case_default} dvInput
		=	declareVars case_guards dvInput
		o`	declareVars case_default dvInput

instance declareVars CasePatterns where
	declareVars (AlgebraicPatterns _ patterns) dvInput
		=	declareVars patterns dvInput
	declareVars (BasicPatterns _ patterns) dvInput
		=	declareVars patterns dvInput
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	declareVars (OverloadedListPatterns _ decons_expr patterns) dvInput
		=	declareVars patterns dvInput
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instance declareVars AlgebraicPattern where
	declareVars {ap_vars, ap_expr} dvInput
		=	declareVars ap_vars dvInput
		o`	declareVars ap_expr dvInput

instance declareVars BasicPattern where
	declareVars {bp_expr} dvInput
		=	declareVars bp_expr dvInput

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:: ModuleIndex :== Index

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class declare a :: ModuleIndex a  -> BackEnder
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class declareWithIndex a :: Index ModuleIndex a -> BackEnder
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//1.3
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instance declare {#a} | declareWithIndex a & ArrayElem a where
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	declare :: ModuleIndex  {#a} -> BackEnder | declareWithIndex a & ArrayElem a 
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//3.1
/*2.0
instance declare {#a} | declareWithIndex a & Array {#} a where
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	declare :: ModuleIndex  {#a} -> BackEnder | declareWithIndex a & Array {#} a 
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0.2*/
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	declare moduleIndex array
		=	foldStateWithIndexA (\i -> declareWithIndex i moduleIndex) array
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declareFunctionSymbols :: {#FunDef} [(Int, Int)] [IndexRange] *BackEndState -> *BackEndState
declareFunctionSymbols functions functionIndices globalFunctions backEnd
	=	foldl declare backEnd [(functionIndex, componentIndex, functions.[functionIndex]) \\ (componentIndex, functionIndex) <- functionIndices]
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	where
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		declare backEnd (functionIndex, componentIndex, function)
			=	appBackEnd (BEDeclareFunction (functionName function.fun_symb.id_name functionIndex globalFunctions) 
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					function.fun_arity functionIndex componentIndex) backEnd
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			where
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				functionName :: {#Char} Int [IndexRange] -> {#Char}
				functionName name functionIndex icl_global_functions
//					| trace_t ("|"+++toString functionIndex)
					| index_in_ranges functionIndex icl_global_functions
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						=	name
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						=	(name +++ ";" +++ toString functionIndex)
					where
						index_in_ranges index [{ir_from, ir_to}:ranges]
							= (index>=ir_from && index < ir_to) || index_in_ranges index ranges;
						index_in_ranges index []
							= False
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// move to backendsupport
foldStateWithIndexRangeA function frm to array
	:== foldStateWithIndexRangeA frm
	where
		foldStateWithIndexRangeA index
			| index == to
				=	identity
			// otherwise
				=	function index array.[index]
				o`	foldStateWithIndexRangeA (index+1)

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folds op l r :== folds l r
	where
		folds [] r = r
		folds [a:x]	r = folds x (op a r)

declareArrayInstances :: [Int] /*IndexRange*/ PredefinedSymbols Int {#FunDef} {#DclModule} -> BackEnder
declareArrayInstances [] predefs main_dcl_module_n functions dcls
	= identity
declareArrayInstances array_first_instance_indices /*{ir_from, ir_to}*/ predefs main_dcl_module_n functions dcls
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//	| trace_tn ("declareArrayInstances "+++toString ir_from+++" "+++toString ir_to)
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//	=	foldStateWithIndexRangeA declareArrayInstance ir_from ir_to functions
	= folds (declareArrayInstances 0) array_first_instance_indices
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	where
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		arrayModuleIndex = predefs.[PD_StdArray].pds_def
		arrayClassIndex = predefs.[PD_ArrayClass].pds_def
		stdArray = dcls.[arrayModuleIndex]
		arrayClass = stdArray.dcl_common.com_class_defs.[arrayClassIndex]
		n_array_class_members=size arrayClass.class_members

		declareArrayInstances :: Int Index *BackEndState -> *BackEndState
		declareArrayInstances member_n first_member_index backend
			| member_n==n_array_class_members
				= backend
				# function_index=first_member_index+member_n
				# backend = declareArrayInstance function_index functions.[function_index] backend
				= declareArrayInstances (member_n+1) first_member_index backend

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		declareArrayInstance :: Index FunDef -> BackEnder
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		declareArrayInstance index {fun_symb={id_name}, fun_type=Yes type}
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			=	beDeclareRuleType index main_dcl_module_n (id_name +++ ";" +++ toString index)
			o`	beDefineRuleType index main_dcl_module_n (convertTypeAlt index main_dcl_module_n type)
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declareListInstances :: [Int] Int PredefinedSymbols Int {#FunDef} {#DclModule} -> BackEnder
declareListInstances [] predef_list_class_index predefs main_dcl_module_n functions dcls
	= identity
declareListInstances array_first_instance_indices predef_list_class_index predefs main_dcl_module_n functions dcls
	= folds (declareListInstances 0) array_first_instance_indices
	where
		strictListModuleIndex = predefs.[PD_StdStrictLists].pds_def
		listClassIndex = predefs.[predef_list_class_index].pds_def
		stdStrictLists = dcls.[strictListModuleIndex]
		listClass = stdStrictLists.dcl_common.com_class_defs.[listClassIndex]
		n_list_class_members=size listClass.class_members

		declareListInstances :: Int Index *BackEndState -> *BackEndState
		declareListInstances member_n first_member_index backend
			| member_n==n_list_class_members
				= backend
				# function_index=first_member_index+member_n
				# backend = declareListInstance function_index functions.[function_index] backend
				= declareListInstances (member_n+1) first_member_index backend

		declareListInstance :: Index FunDef -> BackEnder
		declareListInstance index {fun_symb={id_name}, fun_type=Yes type}
//			| trace_tn ("declareListInstance "+++toString index+++" "+++toString main_dcl_module_n)
			=	beDeclareRuleType index main_dcl_module_n (id_name +++ ";" +++ toString index)
			o`	beDefineRuleType index main_dcl_module_n (convertTypeAlt index main_dcl_module_n type)

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instance declare CommonDefs where
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	declare :: ModuleIndex CommonDefs -> BackEnder
	declare moduleIndex {com_cons_defs, com_type_defs, com_selector_defs, com_class_defs}
		=	declare moduleIndex com_type_defs
		o`	defineTypes moduleIndex com_cons_defs com_selector_defs com_type_defs
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instance declareWithIndex (TypeDef a) where
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	declareWithIndex :: Index ModuleIndex (TypeDef a) -> BackEnder
	declareWithIndex typeIndex moduleIndex {td_name}
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		=	appBackEnd (BEDeclareType typeIndex moduleIndex td_name.id_name)
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declareFunTypes :: ModuleIndex {#FunType} Int -> BackEnder
declareFunTypes moduleIndex funTypes nrOfDclFunctions
		=	foldStateWithIndexA (declareFunType moduleIndex nrOfDclFunctions) funTypes
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declareFunType :: ModuleIndex Index Int FunType -> BackEnder
declareFunType moduleIndex nrOfDclFunctions functionIndex {ft_symb, ft_type_ptr}
	= \be0 -> let (vi,be) = read_from_var_heap ft_type_ptr be0 in
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					(case vi of
						VI_ExpandedType expandedType
							->	beDeclareRuleType functionIndex moduleIndex (functionName ft_symb.id_name functionIndex nrOfDclFunctions)
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//							->	beDeclareRuleType functionIndex moduleIndex (functionName moduleIndex ft_symb.id_name functionIndex nrOfDclFunctions)
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							o`	beDefineRuleType functionIndex moduleIndex (convertTypeAlt functionIndex moduleIndex expandedType)
						_
							->	identity) be
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		where
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//			functionName :: Int {#Char} Int Int -> {#Char}
//			functionName moduleIndex name functionIndex nrOfDclFunctions 
//				| trace_t (":"+++toString moduleIndex+++" "+++toString functionIndex)

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			functionName :: {#Char} Int Int -> {#Char}
			functionName name functionIndex nrOfDclFunctions 
				| functionIndex < nrOfDclFunctions
					=	name
				// otherwise
					=	name +++ ";" +++ toString functionIndex
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import StdDebug
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/*
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declareCurrentDclModuleTypes :: {#CheckedTypeDef} {#Int} -> BackEnder
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*/
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defineTypes :: ModuleIndex {#ConsDef} {#SelectorDef} {#CheckedTypeDef} -> BackEnder
defineTypes moduleIndex constructors selectors types
	=	foldStateWithIndexA (defineType moduleIndex constructors selectors) types
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convertTypeLhs :: ModuleIndex Index  [ATypeVar] -> BEMonad BEFlatTypeP
convertTypeLhs moduleIndex typeIndex args
	=	beFlatType (beTypeSymbol typeIndex moduleIndex) (convertTypeVars args)

convertTypeVars :: [ATypeVar] -> BEMonad BETypeVarListP
convertTypeVars typeVars
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	=	sfoldr (beTypeVars o convertTypeVar) beNoTypeVars typeVars
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convertTypeVar :: ATypeVar -> BEMonad BETypeVarListP
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convertTypeVar typeVar
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	=	beTypeVarListElem (beTypeVar typeVar.atv_variable.tv_name.id_name) (convertAttribution typeVar.atv_attribute)
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defineType :: ModuleIndex {#ConsDef} {#SelectorDef} Index CheckedTypeDef *BackEndState -> *BackEndState
defineType moduleIndex constructors _ typeIndex {td_name, td_args, td_rhs=AlgType constructorSymbols} be
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	# (flatType, be)
		=	convertTypeLhs moduleIndex typeIndex td_args be
	# (constructors, be)
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		=	convertConstructors typeIndex td_name.id_name moduleIndex constructors constructorSymbols be
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	=	appBackEnd (BEAlgebraicType flatType constructors) be
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defineType moduleIndex constructors selectors typeIndex {td_args, td_rhs=RecordType {rt_constructor, rt_fields}} be
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	# (flatType, be)
		=	convertTypeLhs moduleIndex typeIndex td_args be
	# (fields, be)
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		=	convertSelectors moduleIndex selectors rt_fields be
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	# (constructorType,be) = constructorTypeFunction be
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	# (constructorTypeNode, be)
		=	beNormalTypeNode
				(beConstructorSymbol moduleIndex constructorIndex)
				(convertSymbolTypeArgs constructorType)
				be
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	=	appBackEnd (BERecordType moduleIndex flatType constructorTypeNode fields) be
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	where
		constructorIndex
			=	rt_constructor.ds_index
		constructorDef
			=	constructors.[constructorIndex]
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		constructorTypeFunction be0
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			= let (cons_type,be) = read_from_var_heap constructorDef.cons_type_ptr be0 in
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					(case cons_type of
						VI_ExpandedType expandedType
							->	(expandedType,be)
						_
							->	(constructorDef.cons_type,be))
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defineType moduleIndex _ _ typeIndex {td_args, td_rhs=AbstractType _} be
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 	=	beAbsType (convertTypeLhs moduleIndex typeIndex td_args) be
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defineType _ _ _ _ _ be
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	=	be

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convertConstructors :: Int {#Char} ModuleIndex {#ConsDef} [DefinedSymbol] -> BEMonad BEConstructorListP
convertConstructors typeIndex typeName moduleIndex constructors symbols
	=	sfoldr (beConstructors o convertConstructor typeIndex typeName moduleIndex constructors) beNoConstructors symbols
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convertConstructor :: Int {#Char} ModuleIndex {#ConsDef} DefinedSymbol -> BEMonad BEConstructorListP
convertConstructor typeIndex typeName moduleIndex constructorDefs {ds_index}
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	= \be0 -> let (constructorType,be) = constructorTypeFunction be0 in
		(appBackEnd (BEDeclareConstructor ds_index moduleIndex constructorDef.cons_symb.id_name) // +++ remove declare
		o`	beConstructor
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			(beNormalTypeNode
				(beConstructorSymbol moduleIndex ds_index)
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				(convertSymbolTypeArgs constructorType))) be
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	where
		constructorDef
			=	constructorDefs.[ds_index]
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		constructorTypeFunction be0
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			= let (cons_type,be) = read_from_var_heap constructorDef.cons_type_ptr be0 in
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					(case cons_type of
						VI_ExpandedType expandedType
							->	(expandedType,be) // ->> (typeName, typeIndex, constructorDef.cons_symb.id_name, ds_index, expandedType)
						_
							->	(constructorDef.cons_type,be)) // ->> (typeName, typeIndex, constructorDef.cons_symb.id_name, ds_index, constructorDef.cons_type)
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convertSelectors :: ModuleIndex {#SelectorDef} {#FieldSymbol} -> BEMonad BEFieldListP
convertSelectors moduleIndex selectors symbols
	=	foldrA (beFields o convertSelector moduleIndex selectors) beNoFields symbols
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convertSelector :: ModuleIndex {#SelectorDef} FieldSymbol -> BEMonad BEFieldListP
convertSelector moduleIndex selectorDefs {fs_index}
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	= \be0 -> let (selectorType,be) = selectorTypeFunction be0 in
		(	appBackEnd (BEDeclareField fs_index moduleIndex selectorDef.sd_symb.id_name)
		o`	beField fs_index moduleIndex (convertAnnotTypeNode (selectorType.st_result))) be
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	where
		selectorDef
			=	selectorDefs.[fs_index]
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		selectorTypeFunction be0
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			= let (sd_type,be) = read_from_var_heap selectorDef.sd_type_ptr be0 in
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				(case sd_type of
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					VI_ExpandedType expandedType
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						->	(expandedType,be)
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					_