[Rose-commits] r250 - in branches/rice/src: ROSETTA ROSETTA/Grammar
ROSETTA/src backend/unparser/FortranCodeGeneration
frontend/OpenFortranParser_SAGE_Connection
fzhao at osp5.lbl.gov
fzhao at osp5.lbl.gov
Fri Feb 13 08:13:24 PST 2009
Author: fzhao
Date: 2009-02-13 08:13:23 -0800 (Fri, 13 Feb 2009)
New Revision: 250
Modified:
branches/rice/src/ROSETTA/Grammar/Expression.code
branches/rice/src/ROSETTA/Grammar/Statement.code
branches/rice/src/ROSETTA/Grammar/Type.code
branches/rice/src/ROSETTA/astNodeList
branches/rice/src/ROSETTA/src/expression.C
branches/rice/src/ROSETTA/src/statement.C
branches/rice/src/ROSETTA/src/type.C
branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran.h
branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_expressions.C
branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_statements.C
branches/rice/src/frontend/OpenFortranParser_SAGE_Connection/FortranParserActionROSE.C
Log:
Added support for CoArray declaration and References (in function call and right-hand of assignment stmt). Added support for allocate statement with image team presented.
Modified: branches/rice/src/ROSETTA/Grammar/Expression.code
===================================================================
--- branches/rice/src/ROSETTA/Grammar/Expression.code 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/Grammar/Expression.code 2009-02-13 16:13:23 UTC (rev 250)
@@ -979,7 +979,13 @@
SgType* get_type() const;
HEADER_USER_DEFINED_BINARY_EXPRESSION_END
+// FMZ (2/5/2009) Added for CoExpression
+HEADER_CO_EXPRESSION_START
+
+HEADER_CO_EXPRESSION_END
+
+
// #########################################################
// #########################################################
// SOURCE CODE
@@ -5055,3 +5061,17 @@
SOURCE_USER_DEFINED_BINARY_EXPRESSION_END
+
+// FMZ (2/5/200) Added for CoExpression
+SOURCE_CO_EXPRESSION_START
+
+SgType*
+SgCoExpression::get_type() const
+ {
+ SgType* returnType = get_referData()->get_type();
+ ROSE_ASSERT(returnType != NULL);
+ return returnType;
+ }
+
+SOURCE_CO_EXPRESSION_END
+
Modified: branches/rice/src/ROSETTA/Grammar/Statement.code
===================================================================
--- branches/rice/src/ROSETTA/Grammar/Statement.code 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/Grammar/Statement.code 2009-02-13 16:13:23 UTC (rev 250)
@@ -2335,6 +2335,12 @@
virtual SgName get_mangled_name() const;
HEADER_USE_STATEMENT_END
+// FMZ (2/3/2009): Added for co-array fortran "withteam" stmt
+HEADER_WITH_TEAM_STATEMENT_START
+
+HEADER_WITH_TEAM_STATEMENT_END
+
+
HEADER_STOP_OR_PAUSE_STATEMENT_START
public:
enum stop_or_pause_enum
@@ -13480,3 +13486,10 @@
SOURCE_LINEMARKER_PREPROCESSOR_DIRECTIVE_STATEMENT_START
SOURCE_LINEMARKER_PREPROCESSOR_DIRECTIVE_STATEMENT_END
+SOURCE_WITH_TEAM_STATEMEMT_START
+void
+SgWithTeamStatement::post_construction_initialization()
+{
+}
+
+SOURCE_WITH_TEAM_STATEMEMT_END
Modified: branches/rice/src/ROSETTA/Grammar/Type.code
===================================================================
--- branches/rice/src/ROSETTA/Grammar/Type.code 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/Grammar/Type.code 2009-02-13 16:13:23 UTC (rev 250)
@@ -1115,6 +1115,9 @@
p_typedefs = new SgTypedefSeq();
ROSE_ASSERT(p_typedefs != NULL);
+ //FMZ (2/6/2009): Added a flag for CoArray
+ p_isCoArray = false;
+
// DQ (12/1/2007): This has been moved to the SgModifierType
// ROSE_ASSERT(p_type_kind == NULL);
@@ -1151,6 +1154,9 @@
// ROSE_ASSERT(p_type_kind == NULL);
#endif
+ //FMZ (2/6/2009): Added a flag for CoArray
+ p_isCoArray = false;
+
p_typedefs = new SgTypedefSeq();
ROSE_ASSERT(p_typedefs != NULL);
p_typedefs->set_parent(this);
Modified: branches/rice/src/ROSETTA/astNodeList
===================================================================
--- branches/rice/src/ROSETTA/astNodeList 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/astNodeList 2009-02-13 16:13:23 UTC (rev 250)
@@ -598,3 +598,5 @@
SgImagPartOp
SgConjugateOp
SgTypeCafTeam
+SgWithTeamStatement
+SgCoExpression
Modified: branches/rice/src/ROSETTA/src/expression.C
===================================================================
--- branches/rice/src/ROSETTA/src/expression.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/src/expression.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -182,6 +182,10 @@
// DQ (1/31/2009): Added Fortran pointer assignment operator (to support pointer assignment statement).
NEW_TERMINAL_MACRO (PointerAssignOp, "PointerAssignOp", "POINTER_ASSIGN_OP" );
+
+ // FMZ (2/6/2009): Added CoArray Reference Expression
+ NEW_TERMINAL_MACRO (CoExpression, "CoExpression", "COARRAY_REF_EXPR" );
+
#endif
// An expression with a designator, used for designated initialization in
@@ -227,7 +231,7 @@
VarArgCopyOp | VarArgStartOneOperandOp | NullExpression | VariantExpression | SubscriptExpression |
ColonShapeExp | AsteriskShapeExp | /*UseOnlyExpression |*/ ImpliedDo | IOItemExpression |
/* UseRenameExpression | */ StatementExpression | AsmOp | LabelRefExp | ActualArgumentExpression |
- UnknownArrayOrFunctionReference,
+ UnknownArrayOrFunctionReference | CoExpression,
"Expression","ExpressionTag", false);
// ***********************************************************************
@@ -676,6 +680,9 @@
UserDefinedUnaryOp.editSubstitute ( "PRECEDENCE_VALUE", " 2" );
UserDefinedBinaryOp.editSubstitute ( "PRECEDENCE_VALUE", " 2" );
+ // FMZ (2/6/2009): Added for SgCoExpression
+ CoExpression.editSubstitute ( "PRECEDENCE_VALUE", " 2" );
+
#if 0
// Extra required Fortran IR nodes
KeywordValueExpression
@@ -1417,6 +1424,20 @@
UserDefinedBinaryOp.setDataPrototype ( "SgFunctionSymbol*", "symbol" , "= NULL",
CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+
+ //FMZ (2/5/2009): Added for CoExpression
+ CoExpression.setFunctionPrototype ( "HEADER_CO_EXPRESSION", "../Grammar/Expression.code" );
+
+ CoExpression.setDataPrototype ( "SgName", "teamId", "= \"\"",
+ CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS,NO_TRAVERSAL,NO_DELETE);
+ CoExpression.setDataPrototype ( "SgExpression*", "teamRank", "= NULL",
+ CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+ CoExpression.setDataPrototype ( "SgExpression*", "referData", "= NULL",
+ CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS,DEF_TRAVERSAL, NO_DELETE);
+ CoExpression.setFunctionSource ( "SOURCE_EMPTY_POST_CONSTRUCTION_INITIALIZATION",
+ "../Grammar/Expression.code" );
+
+
#endif
DesignatedInitializer.setFunctionPrototype ( "HEADER_DESIGNATED_INITIALIZER", "../Grammar/Expression.code" );
@@ -1617,6 +1638,9 @@
ActualArgumentExpression.setFunctionSource ( "SOURCE_ACTUAL_ARGUMENT_EXPRESSION", "../Grammar/Expression.code" );
DesignatedInitializer.setFunctionSource ( "SOURCE_DESIGNATED_INITIALIZER", "../Grammar/Expression.code" );
+ //FMZ (2/6/2009): Added for CoArray Reference
+ CoExpression.setFunctionSource ( "SOURCE_CO_EXPRESSION", "../Grammar/Expression.code" );
+
#if USE_UPC_IR_NODES
// DQ and Liao (6/10/2008): Added new IR nodes specific to UPC.
UpcLocalsizeofExpression.setFunctionSource ( "SOURCE_UPC_LOCAL_SIZEOF_EXPRESSION", "../Grammar/Expression.code" );
Modified: branches/rice/src/ROSETTA/src/statement.C
===================================================================
--- branches/rice/src/ROSETTA/src/statement.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/src/statement.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -156,6 +156,9 @@
NEW_TERMINAL_MACRO (EndfileStatement, "EndfileStatement", "ENDFILE_STATEMENT" );
NEW_TERMINAL_MACRO (WaitStatement, "WaitStatement", "WAIT_STATEMENT" );
+ // FMZ (2/3/2009): Added co-array "withteam" stmt
+ NEW_TERMINAL_MACRO (WithTeamStatement, "WithTeamStatement", "WITHTEAM_DECL_STMT" );
+
// DQ (12/18/2007): Added support for Fortran Format statement
NEW_TERMINAL_MACRO (FormatStatement, "FormatStatement", "FORMAT_STATEMENT" );
@@ -343,10 +346,11 @@
UsingDirectiveStatement | ClassDeclaration | ImplicitStatement |
UsingDeclarationStatement | NamelistStatement | ImportStatement |
FunctionDeclaration /* | ModuleStatement */ | ContainsStatement |
- C_PreprocessorDirectiveStatement | FortranIncludeLine,
+ C_PreprocessorDirectiveStatement | FortranIncludeLine ,
"DeclarationStatement","DECL_STMT", false);
// DQ (2/2/2006): Support for Fortran IR nodes (contributed by Rice)
+ // FMZ(2/3/2009): Added co-array "withteam" stmt
NEW_NONTERMINAL_MACRO (Statement,
ScopeStatement | FunctionTypeTable | DeclarationStatement | ExprStatement |
LabelStatement | CaseOptionStmt | TryStmt | DefaultOptionStmt |
@@ -357,7 +361,7 @@
AssignStatement | ComputedGotoStatement | AssignedGotoStatement |
/* FortranDo | */ AllocateStatement | DeallocateStatement | UpcNotifyStatement |
UpcWaitStatement | UpcBarrierStatement | UpcFenceStatement |
- SequenceStatement,
+ SequenceStatement | WithTeamStatement,
"Statement","StatementTag", false);
// DQ (11/24/2007): These have been moved to be declarations, so they can appear where only declaration statements are allowed
@@ -2101,6 +2105,17 @@
FortranDo.setDataPrototype ( "bool", "has_end_statement", "= false",
NO_CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+ //FMZ (2/3/2009): Added for co-array "withteam" stmt
+ //WithTeamStatement.setDataPrototype("SgWithTeamStatement*", "withteamStmt", "= NULL",
+ //NO_CONSTRUCTOR_PARAMETER, NO_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+ //WithTeamStatement.setDataPrototype("SgInitializedName", "variable", "",
+ //NO_CONSTRUCTOR_PARAMETER, NO_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+ WithTeamStatement.setFunctionPrototype( "HEADER_WITH_TEAM_STATEMENT", "../Grammar/Statement.code" );
+ WithTeamStatement.setFunctionSource ( "SOURCE_WITH_TEAM_STATEMEMT", "../Grammar/Statement.code" );
+
+
+
+
// Fortran 95 specific construct (different from C/C++ for loop).
ForAllStatement.setFunctionPrototype ( "HEADER_FORALL_STATEMENT", "../Grammar/Statement.code" );
ForAllStatement.setDataPrototype ( "SgExprListExp*", "forall_header", "= NULL",
Modified: branches/rice/src/ROSETTA/src/type.C
===================================================================
--- branches/rice/src/ROSETTA/src/type.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/ROSETTA/src/type.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -154,6 +154,10 @@
Type.setSubTreeFunctionPrototype ( "HEADER_GET_MANGLED", "../Grammar/Type.code" );
Type.excludeFunctionPrototype ( "HEADER_GET_MANGLED", "../Grammar/Type.code" );
+ // FMZ (2/9/2009): Added a flag for CoArray
+ Type.setDataPrototype("bool","isCoArray","= 0",
+ NO_CONSTRUCTOR_PARAMETER, BUILD_ACCESS_FUNCTIONS, NO_TRAVERSAL, NO_DELETE);
+
// DQ (3/7/2004): This functionality was added to EDG 1.4 (and has not yet been added to EDG_3.3)
// The purpose it to allow types to be marked internally as being associated with a template
// argument. There may be more information required to nail down more details in this mapping
Modified: branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran.h
===================================================================
--- branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran.h 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran.h 2009-02-13 16:13:23 UTC (rev 250)
@@ -408,6 +408,9 @@
//! begin the unparser (unparser.C)
void run_unparser();
+ //FMZ (2/10/2009): Added support for unparsing SgCoExpresson
+ void unparseCoArrayExpression (SgExpression* expr, SgUnparse_Info& info);
+
};
#endif
Modified: branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_expressions.C
===================================================================
--- branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_expressions.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_expressions.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -142,6 +142,7 @@
// DQ (10/10/2008): Added support for unser defined unary and binary operators.
case V_SgUserDefinedUnaryOp: unparseUserDefinedUnaryOp (expr, info); break;
case V_SgUserDefinedBinaryOp: unparseUserDefinedBinaryOp(expr, info); break;
+ case V_SgCoExpression: unparseCoArrayExpression(expr, info); break;
#if 0
// DQ (8/15/2007): These are handled in the base class
@@ -2134,3 +2135,47 @@
unparseBinaryOperator(expr, userDefinedBinaryOp->get_operator_name().str(), info);
}
+
+//FMZ (02/02/2009): Added for unparsing co_expression
+void
+FortranCodeGeneration_locatedNode::unparseCoArrayExpression (SgExpression* expr, SgUnparse_Info& info)
+ {
+
+ // printf("unparseCoArrayExpresison\n");
+
+ SgCoExpression* coExpr = isSgCoExpression(expr);
+
+ ROSE_ASSERT(coExpr != NULL);
+
+ SgExpression *dataExpr = coExpr->get_referData();
+
+ ROSE_ASSERT(dataExpr != NULL);
+
+ SgExpression *teamRank = coExpr->get_teamRank();
+
+ unparseLanguageSpecificExpression(dataExpr,info);
+
+ SgName teamID = coExpr->get_teamId();
+
+ if (teamID!="" || teamRank) {
+ curprint("[");
+ }
+
+ if (teamRank) {
+ SgIntVal* intRank = isSgIntVal(teamRank);
+
+ if (intRank)
+ unparseIntVal(intRank, info);
+ else
+ unparseLanguageSpecificExpression(teamRank,info);
+ }
+
+ if (teamID!="") {
+ curprint("@");
+ curprint(teamID.str());
+ }
+
+ if (teamID!="" || teamRank)
+ curprint("]");
+
+ }
Modified: branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_statements.C
===================================================================
--- branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_statements.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/backend/unparser/FortranCodeGeneration/unparseFortran_statements.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -3936,6 +3936,11 @@
}
+ //FMZ (2/10/2009): Added for CoArray
+ if (type->get_isCoArray() == true)
+ curprint("[*]");
+
+
// Unparse the initializers if any exist
// printf ("In FortranCodeGeneration_locatedNode::unparseVarDecl(initializedName=%p): variable initializer = %p \n",initializedName,init);
if (init != NULL)
Modified: branches/rice/src/frontend/OpenFortranParser_SAGE_Connection/FortranParserActionROSE.C
===================================================================
--- branches/rice/src/frontend/OpenFortranParser_SAGE_Connection/FortranParserActionROSE.C 2009-02-13 08:42:19 UTC (rev 249)
+++ branches/rice/src/frontend/OpenFortranParser_SAGE_Connection/FortranParserActionROSE.C 2009-02-13 16:13:23 UTC (rev 250)
@@ -6384,6 +6384,22 @@
outputState("At TOP of R612 c_action_data_ref()");
#endif
+ // FMZ (2/11/2009): Here we could have SgCoExpression in the astExpressionStack
+ // We need to pop out the SgNode to complete whatever need to be done regularly
+ // (without co-array image selector)
+ bool isCoarray = false;
+ SgCoExpression* coExpr = NULL;
+ if (astExpressionStack.empty() == false) {
+ isCoarray=(astExpressionStack.front()->variantT()==V_SgCoExpression);
+ }
+
+ if (isCoarray) { //need to pop out the CoExpresion first
+ coExpr = isSgCoExpression(astExpressionStack.front());
+ ROSE_ASSERT(coExpr != NULL);
+ astExpressionStack.pop_front();
+ }
+
+
// ROSE_ASSERT(numPartRef <= 1);
if (numPartRef > 1)
{
@@ -6833,7 +6849,16 @@
printf ("Pushing variable = %p = %s onto the expression stack \n",variable,variable->class_name().c_str());
// Save the expression on the stack
- astExpressionStack.push_front(variable);
+ // astExpressionStack.push_front(variable);
+
+ // FMZ (2/10/2009): Need to check if it is a CoArrayExpression
+ if (isCoarray) {
+ coExpr->set_referData(variable);
+ setSourcePosition(coExpr,nameToken);
+ astExpressionStack.push_front(coExpr);
+ } else
+ astExpressionStack.push_front(variable);
+
}
// Need to pop token from stack
@@ -16914,25 +16939,55 @@
#endif
// Laks 2009.01.13
-void c_action_co_array_spec() {
+// FMZ (2/6/2009): Added function body
+void c_action_co_array_spec()
+ {
+ if ( SgProject::get_verbose() > DEBUG_RULE_COMMENT_LEVEL )
+ printf ("In c_action_co_array_spec() \n");
-}
+ if (astTypeStack.empty() == true) //scalar co-array, push a new one to the stack
+ {
+ //printf("the basetype is %s\n",(astBaseTypeStack.front())->sage_class_name());
+ SgType* newType = SgTypeVoid::createType();
+ astTypeStack.push_front(newType);
+ }
+ SgType * currType = astTypeStack.front();
+ currType->set_isCoArray(true);
+ }
+
+
// Laks 2009.01.14
-void c_action_rice_co_shape_spec(const char *arg) {
- printf("FortranParserActionROSE.C:c_action_rice_co_shape_spec():%s\n", arg);
-}
-
-void c_action_allocate_co_array_spec() {
-}
+// FMZ (2/6/2009): currently seems we only need to print out the debug info.
+void c_action_rice_co_shape_spec(const char *arg)
+ {
+ //printf("FortranParserActionROSE.C:c_action_rice_co_shape_spec():%s\n", arg);
+ if ( SgProject::get_verbose() > DEBUG_RULE_COMMENT_LEVEL )
+ printf ("In c_action_co_shape_spec() \n");
+ }
+//FMZ (2/12/2009): Currently using "c_action_rice_allocate_co_array_spec"
+void c_action_allocate_co_array_spec()
+ {
+ if ( SgProject::get_verbose() > DEBUG_RULE_COMMENT_LEVEL )
+ printf ("In c_action_allocate_co_array_spec() \n");
+ }
+
/**
* carg_0 is a flag about the coarray status:
* 0 --> no team image
* 1 --> using a team
* .... --> unused
*/
-void c_action_rice_image_selector(Token_t *team_id) {
+// FMZ (2/9/2009): possible cases:
+/**
+ * variable declared: A(:)[*], SA[*]
+ * variable refer: A(12)[1 at team1], SA[1 at team1] A(12)[1] and SA[1]
+ * generate: SgCoExpression(teamID, teamRank, Expression*)
+*/
+void c_action_rice_image_selector(Token_t *team_id)
+ {
+#if 0
if(team_id == NULL)
printf("Rice image selector without team\n");
else
@@ -16940,21 +16995,73 @@
// Laks: needs to throw away the expression to pass the assignment_stmt() assertion
astExpressionStack.pop_front();
-}
+#endif
+ if ( SgProject::get_verbose() > DEBUG_COMMENT_LEVEL )
+ printf ("In c_action_declaration_construct() \n");
+ SgExpression* rankExpr = astExpressionStack.front();
+
+#if 0
+ { //For Testing
+ int tmpindx=(int)(rankExpr->variantT());
+ printf("the rankExpr is %s\n",Cxx_GrammarTerminalNames[tmpindx].name.c_str() );
+ printf("shoule be an integer value node. \n");
+ }
+#endif
+
+ // pop out the expresison of the "rank"
+ astExpressionStack.pop_front();
+
+ // The data reference part (such as "A(4)" in "A(4)[me+1 at ocean]") is yet to be processed
+ // currently, only "teamRank" and "teamId" (such as "me+1" "ocean") are available
+
+ SgExpression* dataExpr = NULL;
+
+ SgCoExpression* coExpr = new SgCoExpression("",rankExpr,dataExpr);
+
+ if (team_id) {
+ coExpr->set_teamId(team_id->text);
+ setSourcePosition(coExpr,team_id);
+ }
+
+ astExpressionStack.push_front(coExpr);
+ }
+
/**
* carg_0 is a flag about the coarray status:
* 0 --> no team image
* 1 --> using a team
* .... --> unused
*/
+//FMZ (2/12/2009): Added CoArray image team ID
void c_action_rice_allocate_co_array_spec(Token_t *team_id) {
+#if 0
if(team_id == NULL)
printf("Rice allocation without team\n");
else
printf("Rice allocation with team: %s\n", team_id->text);
-}
+#endif
+ if ( SgProject::get_verbose() > DEBUG_COMMENT_LEVEL )
+ printf ("In c_action_rice_allocate_co_array_spec() \n");
+ SgExpression* dataExpr = astExpressionStack.front();
+
+ astExpressionStack.pop_front();
+
+ SgCoExpression* coExpr = new SgCoExpression(team_id->text,NULL,dataExpr);
+
+ coExpr->set_parent(dataExpr->get_parent());
+
+ dataExpr->set_parent(coExpr);
+
+ if(team_id == NULL) //set the position based on the subexpression's location
+ resetSourcePosition(coExpr,dataExpr);
+ else //set the position based on the Token_t
+ setSourcePosition(coExpr,team_id);
+
+ astExpressionStack.push_front(coExpr);
+ }
+
/**
* Rice's with team statemetn:
* @param label: label of the statement
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