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' Copyright (c) 2013-2016 Bruce A Henderson
'
' Based on the public domain Monkey "trans" by Mark Sibly
'
' This software is provided 'as-is', without any express or implied
' warranty. In no event will the authors be held liable for any damages
' arising from the use of this software.
'
' Permission is granted to anyone to use this software for any purpose,
' including commercial applications, and to alter it and redistribute it
' freely, subject to the following restrictions:
'
' 1. The origin of this software must not be misrepresented; you must not
' claim that you wrote the original software. If you use this software
' in a product, an acknowledgment in the product documentation would be
' appreciated but is not required.
'
' 2. Altered source versions must be plainly marked as such, and must not be
' misrepresented as being the original software.
'
' 3. This notice may not be removed or altered from any source
' distribution.
'
Global _trans:TTranslator
Type TTranslator
Field _app:TAppDecl
Field outputFiles:TMap = New TMap
Field indent$
Field LINES:TStringList'=New TStringList
Field unreachable:Int,broken:Int
Field contLabelId:Int
Field exitLabelId:Int
'Munging needs a big cleanup!
Field mungScope:TMap=New TMap'<TDecl>
Field mungStack:TStack=New TStack'< StringMap<TDecl> >
Field funcMungs:TMap=New TMap'<FuncDeclList>
Field customVarStack:TStack = New TStack
Field varStack:TStack = New TStack
Field tryStack:TStack = New TStack
Field loopTryStack:TStack = New TStack
Field mungedScopes:TMap=New TMap'<StringSet>
'Field funcMungs:TFuncDeclList=New TFuncDeclList
'Field mungedFuncs:TMap=New Map
Field localScopeStack:TStack = New TStack
Field localScope:TStack = New TStack
Field ind:Int
Field debugOut:String
Field processingReturnStatement:Int
Method PushVarScope()
varStack.Push customVarStack
customVarStack = New TStack
End Method
Method PopVarScope()
customVarStack=TStack(varStack.Pop())
End Method
Method PushLoopLocalStack(stmt:Object)
ind :+ 1
If DEBUG Then
Emit "// --> STACK = " + ind
End If
localScope.Push stmt
End Method
Method PopLoopLocalStack()
If DEBUG Then
Emit "// <-- STACK = " + ind
End If
ind :- 1
If ind < 0 Then
InternalErr
End If
localScope.Pop
End Method
Method LoopLocalScopeDepth:Int(findStmt:TStmt)
Local count:Int = 0
For Local stmt:Object = EachIn localScope
If TBlockDecl(stmt) = Null Then
If findStmt And TTryBreakCheck(stmt) And findStmt <> TTryBreakCheck(stmt).stmt Then
Continue
End If
Exit
End If
count :+ 1
Next
Return count
End Method
Method GetTopLocalLoop:TTryBreakCheck(findStmt:TStmt)
For Local tbc:TTryBreakCheck = EachIn localScope
If findStmt And findStmt <> tbc.stmt Then
Continue
End If
Return tbc
Next
End Method
Method PushLoopTryStack(stmt:Object)
If loopTryStack.Length() = 0 Then
' Try statements can only be applied here to loops
If TTryStmt(stmt) = Null Then
loopTryStack.Push stmt
End If
Else
loopTryStack.Push stmt
End If
End Method
Method PopLoopTryStack()
loopTryStack.Pop
End Method
Method LoopTryDepth:Int(findStmt:TStmt)
Local count:Int = 0
For Local stmt:Object = EachIn loopTryStack
If TTryStmt(stmt) = Null Then
If findStmt And findStmt <> stmt Then
Continue
End If
Exit
End If
count :+ 1
Next
Return count
End Method
Method GetTopLoop:TTryBreakCheck(findStmt:TStmt)
For Local tbc:TTryBreakCheck = EachIn loopTryStack
If findStmt And findStmt <> tbc.stmt Then
Continue
End If
Return tbc
Next
End Method
Method TransManglePointer$( ty:TType )
Local p:String
If ty
If ty._flags & TType.T_VAR Then
p:+ "v"
End If
If ty._flags & TType.T_PTR Then
p:+ "p"
Else If ty._flags & TType.T_PTRPTR Then
p:+ "pp"
Else If ty._flags & TType.T_PTRPTRPTR Then
p:+ "ppp"
End If
End If
Return p
End Method
Method TransMangleType:String(ty:TType)
Local p:String = TransManglePointer(ty)
If TVoidType( ty ) Return "v"
If TByteType( ty ) Return p + "b"
If TShortType( ty ) Return p + "s"
If TIntType( ty ) Return p + "i"
If TUIntType( ty ) Return p + "u"
If TFloatType( ty ) Return p + "f"
If TDoubleType( ty ) Return p + "d"
If TLongType( ty ) Return p + "l"
If TULongType( ty ) Return p + "y"
If TSizeTType( ty ) Return p + "z"
If TFloat64Type( ty ) Return p + "h"
If TFloat128Type( ty ) Return p + "k"
If TInt128Type( ty ) Return p + "j"
If TDouble128Type( ty ) Return p + "m"
If TStringType( ty ) Return p + "S"
If TWParamType( ty ) Return p + "W"
If TLParamType( ty ) Return p + "L"
If TArrayType( ty ) Then
Return p + "a" + TransMangleType(TArrayType( ty ).elemType)
End If
If TObjectType( ty ) Then
If Not TObjectType( ty ).classdecl.IsExtern()
Return p + "T" + TObjectType( ty ).classDecl.ident
Else
If TObjectType( ty ).classdecl.IsInterface() Then
Return p + "I" + TObjectType(ty).classDecl.ident
ElseIf TObjectType( ty ).classdecl.IsStruct() Then
Return p + "R" + TObjectType(ty).classDecl.ident
Else
Return p + "E" + TObjectType(ty).classDecl.ident
End If
End If
End If
If TFunctionPtrType( ty ) Then
Local func:TFuncDecl = TFunctionPtrType( ty ).func
Local s:String = "F" + MangleMethodArgs(func)
' For Local i:Int = 0 Until func.argDecls.length
' s :+ TransMangleType(func.argDecls[i].ty)
' Next
Return s + "_" + TransMangleType(func.retType) + "_"
End If
Err "Unsupported type for name mangling : " + ty.ToString()
End Method
Method MangleMethod:String(fdecl:TFuncDecl)
If (fdecl.IsMethod() And Not fdecl.ClassScope().IsStruct())Or fdecl.IsCtor() Then
Return MangleMethodArgs(fdecl)
Else
Return MangleMethodRetType(fdecl) + MangleMethodArgs(fdecl)
End If
End Method
Method MangleMethodRetType:String(fdecl:TFuncDecl)
If fdecl.retType Then
Return "_" + TransMangleType(fdecl.retType)
Else
Return "_v"
End If
End Method
Method MangleMethodArgs:String(fdecl:TFuncDecl)
Local s:String
For Local arg:TArgDecl = EachIn fdecl.argDecls
If Not s Then
s = "_"
End If
s :+ TransMangleType(arg.ty)
Next
Return s
End Method
Method equalsTorFunc:Int(classDecl:TClassDecl, func:TFuncDecl)
If func.IdentLower() = "new" Or func.IdentLower() = "delete" Then
Return True
End If
Return False
End Method
Method equalsBuiltInFunc:Int(classDecl:TClassDecl, func:TFuncDecl, checked:Int = False)
If func.equalsBuiltIn > -1 Then
Return func.equalsBuiltIn
End If
If checked Or func.IdentLower() = "tostring" Or func.IdentLower() = "compare" Or func.IdentLower() = "sendmessage" Or func.IdentLower() = "new" Or func.IdentLower() = "delete" Then
If classDecl.munged = "bbObjectClass" Then
For Local decl:TFuncDecl = EachIn classDecl.Decls()
If Not decl.IsSemanted() Then
decl.Semant
End If
If decl.IdentLower() = func.IdentLower() Then
Local res:Int = decl.EqualsFunc(func)
If res Then
func.equalsBuiltIn = True
End If
Return res
End If
Next
End If
If classDecl.superClass Then
Return equalsBuiltInFunc(classDecl.superClass, func, True)
End If
End If
func.equalsBuiltIn = False
Return False
End Method
Method equalsIfcBuiltInFunc:Int(classDecl:TClassDecl, func:TFuncDecl, checked:Int = False)
If checked Or func.IdentLower() = "new" Or func.IdentLower() = "delete" Then
If classDecl.munged = "bbObjectClass" Then
For Local decl:TFuncDecl = EachIn classDecl.Decls()
If Not decl.IsSemanted() Then
decl.Semant
End If
If decl.IdentLower() = func.IdentLower() Then
Return decl.EqualsFunc(func)
End If
Next
End If
If classDecl.superClass Then
Return equalsIfcBuiltInFunc(classDecl.superClass, func, True)
End If
End If
Return False
End Method
Method MungFuncDecl( fdecl:TFuncDecl )
If fdecl.munged Return
Local funcs:TFuncDeclList=TFuncDeclList(funcMungs.ValueForKey( fdecl.ident ))
If funcs
For Local tdecl:TFuncDecl=EachIn funcs
If fdecl.EqualsArgs( tdecl )
fdecl.munged=tdecl.munged
Return
EndIf
Next
Else
funcs=New TFuncDeclList
funcMungs.Insert fdecl.ident,funcs
EndIf
If fdecl.scope Then
Local id:String = fdecl.ident
If fdecl.attrs & FUNC_OPERATOR Then
id = MungSymbol(id)
End If
fdecl.munged = fdecl.scope.munged + "_" + id
If Not equalsBuiltInFunc(fdecl.classScope(), fdecl) And Not fdecl.noMangle Then
fdecl.munged :+ MangleMethod(fdecl)
End If
' fields are lowercase with underscore prefix.
' a function pointer with FUNC_METHOD is a field function pointer.
'If TFieldDecl(fdecl) Or (TFuncDecl(decl) And (decl.attrs & FUNC_METHOD) And (decl.attrs & FUNC_PTR)) Then
' munged = "_" + munged.ToLower()
'End If
Else
fdecl.munged="bb_"+fdecl.ident
End If
funcs.AddLast fdecl
End Method
Method MungSymbol:String(sym:String)
Select sym
Case "*"
Return "_mul"
Case "/"
Return "_div"
Case "+"
Return "_add"
Case "-"
Return "_sub"
Case "&"
Return "_and"
Case "|"
Return "_or"
Case "~~"
Return "_xor"
Case ":*"
Return "_muleq"
Case ":/"
Return "_diveq"
Case ":+"
Return "_addeq"
Case ":-"
Return "_subeq"
Case ":&"
Return "_andeq"
Case ":|"
Return "_oreq"
Case ":~~"
Return "_xoreq"
Case "<"
Return "_lt"
Case "<="
Return "_le"
Case ">"
Return "_gt"
Case ">="
Return "_ge"
Case "="
Return "_eq"
Case "<>"
Return "_ne"
Case "mod"
Return "_mod"
Case "shl"
Return "_shl"
Case "shr"
Return "_shr"
End Select
Return "?? unknown symbol ?? : " + sym
End Method
Method MungDecl( decl:TDecl, addIfNotInScope:Int = False )
If decl.munged Then
' ensure function args get into local scope correctly.
If addIfNotInScope Then
If Not mungScope.Contains( decl.munged ) Then
mungScope.Insert(decl.munged, decl)
End If
End If
Return
End If
Local fdecl:TFuncDecl=TFuncDecl( decl )
' apply mangling to methods and New (ctors)
' but don't apply mangling to function pointers
If fdecl And fdecl.ClassScope() And Not (fdecl.attrs & FUNC_PTR)
MungFuncDecl( fdecl )
Return
End If
Local id$=decl.ident,munged$
'this lot just makes output a bit more readable...
' Select ENV_LANG
' Case "js"
' If TModuleDecl( decl.scope ) Or TGlobalDecl( decl ) Or (fdecl And Not fdecl.IsMethod())
' munged=decl.ModuleScope().munged+"_"+id
' EndIf
' Case "as"
' If TModuleDecl( decl.scope )
' munged=decl.ModuleScope().munged+"_"+id
' EndIf
' Case "cs"
' If TClassDecl( decl )
' munged=decl.ModuleScope().munged+"_"+id
' EndIf
' Case "java"
' If TClassDecl( decl )
' munged=decl.ModuleScope().munged+"_"+id
' EndIf
' Case "cpp"
If TModuleDecl( decl.scope )
munged=decl.ModuleScope().munged+"_"+id
EndIf
If TModuleDecl( decl )
munged=decl.ModuleScope().munged+"_"+id
EndIf
' End Select
'DebugStop
If Not munged
If TLocalDecl( decl )
munged="bbt_"+id
Else
If decl.scope Then
munged = decl.scope.munged + "_" + id
' fields are lowercase with underscore prefix.
' a function pointer with FUNC_METHOD is a field function pointer.
If TFieldDecl(decl) Or (TFuncDecl(decl) And (decl.attrs & FUNC_METHOD) And (decl.attrs & FUNC_PTR)) Then
munged = "_" + munged.ToLower()
End If
Else
munged="bb_"+id
End If
EndIf
EndIf
'sanitize non-mung-able characters
munged = TStringHelper.Sanitize(munged)
'add an increasing number to identifier if already used
If mungScope.Contains( munged )
Local i:Int=1
Repeat
i:+1
Until Not mungScope.Contains( munged + i )
munged :+ i
EndIf
mungScope.Insert(munged, decl)
decl.munged=munged
' a function pointers' real function is stored in "func" - need to set its munged to match the parent.
If TValDecl(decl) Then
If TFunctionPtrType(TValDecl(decl).ty) Then
TFunctionPtrType(TValDecl(decl).ty).func.munged = munged
End If
End If
End Method
Rem
Method MungDecl( decl:TDecl )
If decl.munged Return
Local fdecl:TFuncDecl=TFuncDecl( decl )
If fdecl And fdecl.IsMethod() Then
' DebugStop
MungFuncDecl( fdecl )
Return
End If
Local id:String=decl.ident,munged$,scope$
If TLocalDecl( decl )
scope="$"
munged="t_"+id
Else If TClassDecl( decl )
scope=""
munged="c_"+id
Else If TModuleDecl( decl )
scope=""
munged="bb_"+id
Else If TClassDecl( decl.scope )
scope=decl.scope.munged
munged="m_"+id
Else If TModuleDecl( decl.scope )
'If ENV_LANG="cs" Or ENV_LANG="java"
' scope=decl.scope.munged
' munged="g_"+id
'Else
scope=""
munged=decl.scope.munged+"_"+id
'EndIf
Else
InternalErr
EndIf
Local set:TMap=TMap(mungedScopes.ValueForKey( scope ))
If set
If set.Contains( munged.ToLower() )
Local id:Int=1
Repeat
id :+ 1
Local t$=munged+id
If set.Contains( t.ToLower() ) Continue
munged=t
Exit
Forever
End If
Else
If scope="$"
Print "OOPS2"
InternalErr
EndIf
set=New TMap
mungedScopes.Insert scope,set
End If
set.Insert munged.ToLower(), ""
decl.munged=munged
End Method
End Rem
Method Bra$( str$ )
If str.StartsWith( "(" ) And str.EndsWith( ")" )
Local n:Int=1
For Local i:Int=1 Until str.Length-1
Select str[i..i+1]
Case "("
n:+1
Case ")"
n:-1
If Not n Return "("+str+")"
End Select
Next
If n=1 Return str
' If str.FindLast("(")<str.Find(")") Return str
EndIf
Return "("+str+")"
End Method
'Utility C/C++ style...
Method Enquote$( str$ )
Return LangEnquote( str )
End Method
Method EscapeChars:String(str:String)
If str Then
Local found:Int = False
For Local i:Int = 0 Until str.length
If str[i] > 127 Then
found = True
Exit
End If
Next
If Not found Then
Return str
End If
Local s:String
For Local i:Int = 0 Until str.length
Local char:Int = str[i]
If char < 128 Then
s :+ Chr(char)
Else
s :+ "~~" + char + "~~"
End If
Next
Return s
End If
End Method
Method TransUnaryOp$( op$ )
Select op
Case "+" Return "+"
Case "-" Return "-"
Case "~~" Return op
Case "not" Return "!"
End Select
InternalErr
End Method
Method TransBinaryOp$( op$,rhs$ )
'DebugLog "TransBinaryOp '" + op + "' : '" + rhs + "'"
op = mapSymbol(op)
Select op
Case "+","-"
If rhs.StartsWith( op ) Return op+" "
Return op
Case "*","/" Return op
Case "shl" Return "<<"
Case "shr" Return ">>"
Case "sar" Return ">>"
Case "mod" Return " % "
Case "and" Return " && "
Case "or" Return " || "
Case "=" Return "=="
Case "<>" Return "!="
Case "<","<=",">",">=" Return op
Case "=<" Return "<="
Case "=>" Return ">="
Case "&","|" Return op
Case "~~" Return "^"
Case "<<", ">>" Return Op
Case "%" Return Op
End Select
InternalErr
End Method
Method TransAssignOp$( op$ )
op = mapSymbol(op)
Select op
Case ":mod" Return "%="
Case ":shl" Return "<<="
Case ":shr" Return ">>="
Case ":sar" Return ">>="
End Select
Return op
End Method
Method ExprPri:Int( expr:TExpr )
'
'1=primary,
'2=postfix
'3=prefix
'
If TNewObjectExpr( expr )
Return 3
Else If TUnaryExpr( expr )
Select TUnaryExpr( expr ).op
Case "+","-","~~","not" Return 3
End Select
InternalErr
Else If TBinaryExpr( expr )
Select TBinaryExpr( expr ).op
Case "^" Return 4
Case "*","/","mod","%" Return 5
Case "+","-" Return 6
Case "shl","shr", "sar","<<", ">>" Return 7
Case "<","<=",">",">=", "=<", "=>" Return 8
Case "=","<>" Return 9
Case "&" Return 10
Case "~~" Return 11
Case "|" Return 12
Case "and" Return 13
Case "or" Return 14
End Select
InternalErr
EndIf
Return 2
End Method
Method TransSubExpr$( expr:TExpr,pri:Int=2 )
Local t_expr$=expr.Trans()
'If expr.exprType._flags & TTYPE.T_VAR Then
' t_expr = Bra("*" + t_expr)
'End If
If ExprPri( expr )>pri t_expr=Bra( t_expr )
Return t_expr
End Method
Method TransExprNS$( expr:TExpr )
If TVarExpr( expr ) Return expr.Trans()
If TConstExpr( expr ) Return expr.Trans()
Return CreateLocal( expr )
End Method
Method CreateLocal$( expr:TExpr, init:Int = True, vol:Int = True )
Local tmp:TLocalDecl=New TLocalDecl.Create( "",expr.exprType,expr, True, , vol )
MungDecl tmp
Emit TransLocalDecl( tmp,expr, True, init )+";"
EmitGDBDebug(_errInfo)
Return tmp.munged
End Method
'***** Utility *****
Method TransLocalDecl$( decl:TLocalDecl,init:TExpr, declare:Int = False, outputInit:Int = True ) Abstract
Method TransGlobalDecl$( gdecl:TGlobalDecl ) Abstract
Method EmitPushErr()
End Method
Method EmitSetErr( errInfo$ )
End Method
Method EmitPopErr()
End Method
'***** Declarations *****
Method TransGlobal$( decl:TGlobalDecl ) Abstract
Method TransField$( decl:TFieldDecl,lhs:TExpr ) Abstract
Method TransFunc$( decl:TFuncDecl,args:TExpr[],lhs:TExpr, sup:Int = False, scope:TScopeDecl = Null ) Abstract
Method TransSuperFunc$( decl:TFuncDecl,args:TExpr[], scope:TScopeDecl ) Abstract
'***** Expressions *****
Method TransConstExpr$( expr:TConstExpr ) Abstract
Method TransNewObjectExpr$( expr:TNewObjectExpr ) Abstract
Method TransNewArrayExpr$( expr:TNewArrayExpr ) Abstract
Method TransSelfExpr$( expr:TSelfExpr ) Abstract
Method TransCastExpr$( expr:TCastExpr ) Abstract
Method TransUnaryExpr$( expr:TUnaryExpr ) Abstract
Method TransBinaryExpr$( expr:TBinaryExpr ) Abstract
Method TransIndexExpr$( expr:TIndexExpr ) Abstract
Method TransSliceExpr$( expr:TSliceExpr ) Abstract
Method TransArrayExpr$( expr:TArrayExpr ) Abstract
Method TransArraySizeExpr$ ( expr:TArraySizeExpr ) Abstract
Method TransIntrinsicExpr$( decl:TDecl,expr:TExpr,args:TExpr[]=Null ) Abstract
Method TransArgs$( args:TExpr[],decl:TFuncDecl, objParam:String = Null ) Abstract
Method EmitDebugEnterScope(block:TBlockDecl) Abstract
Method EmitLocalDeclarations(decl:TScopeDecl, v:TValDecl = Null) Abstract
Method TransType$( ty:TType, ident:String, fpReturnTypeFunctionArgs:String = Null, fpReturnTypeClassFunc:Int = False) Abstract
Method BeginLocalScope()
mungStack.Push mungScope
mungScope:TMap=New TMap'<TDecl>
' mungedScopes.Insert "$",New TMap
If opt_debug Then
localScopeStack.Push localScope
localScope = New TStack
End If
End Method
Method EndLocalScope()
mungScope=TMap(mungStack.Pop())
' mungedScopes.Insert "$",Null
If opt_debug Then
localScope = TStack(localScopeStack.Pop())
End If
End Method
Rem
Method MungMethodDecl( fdecl:TFuncDecl )
If fdecl.munged Return
If fdecl.overrides
MungMethodDecl fdecl.overrides
fdecl.munged=fdecl.overrides.munged
Return
EndIf
Local funcs:=funcMungs.Get( fdecl.ident )
If funcs
For Local tdecl:=EachIn funcs
If fdecl.EqualsArgs( tdecl )
fdecl.munged=tdecl.munged
Return
EndIf
Next
Else
funcs=New FuncDeclList
funcMungs.Set fdecl.ident,funcs
EndIf
Local id:=fdecl.ident
If mungedFuncs.Contains( id )
Local n:=1
Repeat
n+=1
id=fdecl.ident+String(n)
Until Not mungedFuncs.Contains( id )
EndIf
mungedFuncs.Set id,fdecl
fdecl.munged="p_"+id
funcs.AddLast fdecl
End
End Rem
'***** Simple statements *****
'Expressions
Method TransStmtExpr$( expr:TStmtExpr )
Local t$=expr.stmt.Trans()
If t Emit t+";"
Return expr.expr.Trans()
End Method
Method TransTemplateCast$( ty:TType,src:TType,expr$ )
Return expr
End Method
Method TransVarExpr$( expr:TVarExpr )
Local decl:TVarDecl=TVarDecl( expr.decl.actual )
If decl.munged.StartsWith( "$" ) Return TransIntrinsicExpr( decl,Null )
If TLocalDecl( decl ) Then
If decl.ty._flags & TType.T_VAR Then
Return "*" + decl.munged
Else
Return decl.munged
End If
End If
If TFieldDecl( decl ) Return TransField( TFieldDecl( decl ),Null )
If TGlobalDecl( decl ) Return TransGlobal( TGlobalDecl( decl ) )
InternalErr
End Method
Method TransMemberVarExpr$( expr:TMemberVarExpr )
Local decl:TVarDecl=TVarDecl( expr.decl.actual )
If decl.munged.StartsWith( "$" ) Return TransIntrinsicExpr( decl,expr.expr )
If TFieldDecl( decl ) Return TransField( TFieldDecl( decl ),expr.expr )
InternalErr
End Method
Method TransInvokeExpr$( expr:TInvokeExpr )
Local decl:TFuncDecl=TFuncDecl( expr.decl.actual ),t$
'If decl.ident = "OnDebugStop" DebugStop
If Not decl.munged Then
MungDecl decl
End If
'If (decl.attrs & FUNC_PTR) And (decl.attrs & FUNC_INIT) And Not expr.InvokedWithBraces Return decl.munged
'If ((decl.attrs & FUNC_PTR) Or (expr.decl.attrs & FUNC_PTR)) And Not expr.InvokedWithBraces Return decl.munged
'If Not expr.InvokedWithBraces And expr.IsRhs Return decl.munged
' if the call was a statement (even one written without parentheses), then invokedWithBraces is true
' so no complicated checks are needed here; if invokedWithBraces is false, this is definitely not a call
If Not expr.InvokedWithBraces Then Return decl.munged
If decl.munged.StartsWith( "$" ) Return TransIntrinsicExpr( decl,Null,expr.args )
If processingReturnStatement = 1 Then
If decl Then
processingReturnStatement :+ 1
Return CreateLocal(expr)
End If
Else
If decl Return TransFunc( TFuncDecl(decl),expr.args,Null )
End If
InternalErr
End Method
Method TransInvokeMemberExpr$( expr:TInvokeMemberExpr )
Local decl:TFuncDecl=TFuncDecl( expr.decl.actual ),t$
If decl.munged.StartsWith( "$" ) Return TransIntrinsicExpr( decl,expr.expr,expr.args )
If processingReturnStatement = 1 Then
If decl Then
processingReturnStatement :+ 1
Return CreateLocal(expr)
End If
Else
If decl Return TransFunc( TFuncDecl(decl),expr.args,expr.expr )
End If
InternalErr
End Method
Method TransInvokeSuperExpr$( expr:TInvokeSuperExpr )
Local decl:TFuncDecl=TFuncDecl( expr.origFuncDecl.actual ),t$
If decl.munged.StartsWith( "$" ) Return TransIntrinsicExpr( decl,expr )
If processingReturnStatement = 1 Then
If decl Then
processingReturnStatement :+ 1
Return CreateLocal(expr)
End If
Else
If decl Return TransSuperFunc( TFuncDecl( expr.funcDecl ),expr.args, expr.classScope )
End If
InternalErr
End Method
Method TransFuncCallExpr:String( expr:TFuncCallExpr )
If TIndexExpr(expr.expr) And TArrayType(TIndexExpr(expr.expr).expr.exprType) And TFunctionPtrType(TArrayType(TIndexExpr(expr.expr).expr.exprType).elemType) Then
Local decl:TDecl = TFunctionPtrType(TArrayType(TIndexExpr(expr.expr).expr.exprType).elemType).func.actual
decl.Semant()
expr.args=expr.CastArgs( expr.args,TFuncDecl(decl) )
Return expr.expr.Trans() + TransArgs(expr.args, TFuncDecl(decl))
End If
' hmmm, complicated - a function returning and invoking a function pointer...
If TInvokeExpr(expr.expr) And TFunctionPtrType(TInvokeExpr(expr.expr).exprType) Then
Local decl:TDecl = TFunctionPtrType(TInvokeExpr(expr.expr).exprType).func.actual
decl.Semant()
expr.args=expr.CastArgs( expr.args,TFuncDecl(decl) )
Return expr.expr.Trans() + TransArgs(expr.args, TFuncDecl(decl))
End If
InternalErr
End Method
Method TransExprStmt$( stmt:TExprStmt )
Return stmt.expr.TransStmt()
End Method
Method TransAssignStmt$( stmt:TAssignStmt )
If stmt.rhs Return stmt.lhs.TransVar()+TransAssignOp(stmt.op)+stmt.rhs.Trans()
Return stmt.lhs.Trans()
End Method
Method TransReturnStmt$( stmt:TReturnStmt )
Local t$="return"
unreachable=True
If stmt.expr Then
If TObjectType(stmt.expr.exprType) And TNullDecl(TObjectType(stmt.expr.exprType).classDecl) Then
If IsPointerType(stmt.fRetType, 0, TType.T_POINTER) Or IsNumericType(stmt.fRetType) Then
t:+ " 0"
End If
If TStringType(stmt.fRetType) Then
t:+ " &bbEmptyString"
End If
If TArrayType(stmt.fRetType) Then
t:+ " &bbEmptyArray"
End If
Else
If TSelfExpr(stmt.expr) And TObjectType(TSelfExpr(stmt.expr).exprType).classDecl And TObjectType(TSelfExpr(stmt.expr).exprType).classDecl.IsStruct() Then
t :+ Bra("*" + stmt.expr.Trans())
Else If TObjectType(stmt.expr.exprType) And TObjectType(stmt.expr.exprType).classDecl.IsStruct() And TConstExpr(stmt.expr) And Not TConstExpr(stmt.expr).value Then
Local lvar:String = CreateLocal(stmt.expr)
t :+ " " + lvar