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Expression.mo
13446 lines (11970 loc) · 399 KB
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Expression.mo
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/*
* This file is part of OpenModelica.
*
* Copyright (c) 1998-2014, Open Source Modelica Consortium (OSMC),
* c/o Linköpings universitet, Department of Computer and Information Science,
* SE-58183 Linköping, Sweden.
*
* All rights reserved.
*
* THIS PROGRAM IS PROVIDED UNDER THE TERMS OF GPL VERSION 3 LICENSE OR
* THIS OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.2.
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THE OSMC PUBLIC LICENSE OR THE GPL VERSION 3,
* ACCORDING TO RECIPIENTS CHOICE.
*
* The OpenModelica software and the Open Source Modelica
* Consortium (OSMC) Public License (OSMC-PL) are obtained
* from OSMC, either from the above address,
* from the URLs: http://www.ida.liu.se/projects/OpenModelica or
* http://www.openmodelica.org, and in the OpenModelica distribution.
* GNU version 3 is obtained from: http://www.gnu.org/copyleft/gpl.html.
*
* This program is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE, EXCEPT AS EXPRESSLY SET FORTH
* IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE CONDITIONS OF OSMC-PL.
*
* See the full OSMC Public License conditions for more details.
*
*/
encapsulated package Expression
" file: Expression.mo
package: Expression
description: Expressions
This file contains the module `Expression\', which contains data types for
describing expressions, after they have been examined by the
static analyzer in the module `StaticExp\'. There are of course
great similarities with the expression types in the `Absyn\'
module, but there are also several important differences.
No overloading of operators occur, and subscripts have been
checked to see if they are slices. All expressions are also type
consistent, and all implicit type conversions in the AST are made
explicit here."
// public imports
public import Absyn;
public import AbsynUtil;
public import DAE;
protected
type ComponentRef = DAE.ComponentRef;
type Exp = DAE.Exp;
type Operator = DAE.Operator;
type Type = DAE.Type;
type Subscript = DAE.Subscript;
type Var = DAE.Var;
// protected imports
protected import Array;
protected import ClassInf;
protected import ComponentReference;
protected import Config;
protected import DAEUtil;
protected import Debug;
protected import DoubleEnded;
protected import FCore;
protected import FGraph;
protected import Error;
protected import ExpressionDump;
protected import ExpressionDump.printExpStr;
protected import ExpressionSimplify;
protected import Dump;
protected import Flags;
protected import List;
protected import Patternm;
protected import Static;
protected import System; // stringReal
protected import Types;
protected import Util;
/***************************************************/
/* transform to other types */
/***************************************************/
public function intSubscript
"Converts an integer into an index subscript."
input Integer inInteger;
output DAE.Subscript outSubscript;
algorithm
outSubscript := DAE.INDEX(DAE.ICONST(inInteger));
end intSubscript;
public function intSubscripts
"Converts a list of integers into index subscripts."
input list<Integer> inIntegers;
output list<DAE.Subscript> outSubscripts;
algorithm
outSubscripts := List.map(inIntegers, intSubscript);
end intSubscripts;
public function subscriptInt
"Tries to convert a subscript to an integer index."
input DAE.Subscript inSubscript;
output Integer outInteger = expArrayIndex(subscriptIndexExp(inSubscript));
end subscriptInt;
public function subscriptsInt
"Tries to convert a list of subscripts to integer indices."
input list<DAE.Subscript> inSubscripts;
output list<Integer> outIntegers;
algorithm
outIntegers := List.map(inSubscripts, subscriptInt);
end subscriptsInt;
public function dimensionIsZero
input DAE.Dimension inDimension;
output Boolean outIsZero;
algorithm
outIsZero := 0 == dimensionSize(inDimension);
end dimensionIsZero;
public function unelabExp
"Transform an DAE.Exp into Absyn.Expression.
Note: This function currently only works for
constants and component references."
input DAE.Exp inExp;
output Absyn.Exp outExp;
algorithm
outExp := matchcontinue (inExp)
local
Integer i;
Real r;
String s;
Boolean b;
Absyn.ComponentRef cr_1;
ComponentRef cr;
list<Absyn.Exp> expl_1,aexpl;
list<DAE.Exp> expl;
DAE.Exp e1,e2,e3;
Operator op;
Absyn.Exp ae1,ae2,ae3;
Absyn.Operator aop;
list<list<DAE.Exp>> mexpl2;
list<list<Absyn.Exp>> amexpl;
Absyn.ComponentRef acref;
Absyn.Path path;
Absyn.CodeNode code;
DAE.ReductionIterators riters;
Absyn.ForIterators aiters;
DAE.Type ty;
DAE.Dimensions dims;
Absyn.ReductionIterType iterType;
case (DAE.ICONST(integer = i)) then Absyn.INTEGER(i);
case (DAE.RCONST(real = r))
equation
s = realString(r);
then Absyn.REAL(s);
case (DAE.SCONST(string = s)) then Absyn.STRING(s);
case (DAE.BCONST(bool = b)) then Absyn.BOOL(b);
case (DAE.ENUM_LITERAL(name = path))
equation
cr_1 = AbsynUtil.pathToCref(path);
then Absyn.CREF(cr_1);
case (DAE.CREF(componentRef = cr))
equation
cr_1 = ComponentReference.unelabCref(cr);
then
Absyn.CREF(cr_1);
case(DAE.BINARY(e1,op,e2)) equation
aop = unelabOperator(op);
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
then Absyn.BINARY(ae1,aop,ae2);
case(DAE.UNARY(op,e1)) equation
aop = unelabOperator(op);
ae1 = unelabExp(e1);
then Absyn.UNARY(aop,ae1);
case(DAE.LBINARY(e1,op,e2)) equation
aop = unelabOperator(op);
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
then Absyn.LBINARY(ae1,aop,ae2);
case(DAE.LUNARY(op,e1)) equation
aop = unelabOperator(op);
ae1 = unelabExp(e1);
then Absyn.LUNARY(aop,ae1);
case(DAE.RELATION(exp1=e1,operator=op,exp2=e2)) equation
aop = unelabOperator(op);
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
then Absyn.RELATION(ae1,aop,ae2);
case(DAE.IFEXP(e1,e2,e3)) equation
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
ae3 = unelabExp(e3);
then Absyn.IFEXP(ae1,ae2,ae3,{});
case (DAE.CALL(path,expl,_))
equation
aexpl = List.map(expl,unelabExp);
acref = AbsynUtil.pathToCref(path);
then Absyn.CALL(acref,Absyn.FUNCTIONARGS(aexpl,{}),{});
case (DAE.RECORD(path = path,exps = expl))
equation
aexpl = List.map(expl,unelabExp);
acref = AbsynUtil.pathToCref(path);
then Absyn.CALL(acref,Absyn.FUNCTIONARGS(aexpl,{}),{});
case(DAE.PARTEVALFUNCTION(path,expl,_,_))
equation
aexpl = List.map(expl,unelabExp);
acref = AbsynUtil.pathToCref(path);
then
Absyn.PARTEVALFUNCTION(acref,Absyn.FUNCTIONARGS(aexpl,{}));
case (DAE.ARRAY(array = {}, ty = ty))
equation
(ty, dims) = Types.flattenArrayType(ty);
ae1 = unleabZeroExpFromType(ty);
expl_1 = List.map(dims, unelabDimensionToFillExp);
then
Absyn.CALL(Absyn.CREF_IDENT("fill",{}),Absyn.FUNCTIONARGS(ae1::expl_1,{}),{});
case (DAE.ARRAY(array = expl))
equation
expl_1 = List.map(expl, unelabExp);
then
Absyn.ARRAY(expl_1);
case(DAE.MATRIX(matrix = mexpl2))
equation
amexpl = List.mapList(mexpl2,unelabExp);
then (Absyn.MATRIX(amexpl));
case(DAE.RANGE(_,e1,SOME(e2),e3)) equation
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
ae3 = unelabExp(e3);
then Absyn.RANGE(ae1,SOME(ae2),ae3);
case(DAE.RANGE(_,e1,NONE(),e3)) equation
ae1 = unelabExp(e1);
ae3 = unelabExp(e3);
then Absyn.RANGE(ae1,NONE(),ae3);
case(DAE.TUPLE(expl))
equation
expl_1 = List.map(expl, unelabExp);
then
Absyn.TUPLE(expl_1);
case(DAE.CAST(_,e1)) equation
ae1 = unelabExp(e1);
then ae1;
// ASUB can not be unelabed since it has no representation in Absyn.
case(DAE.ASUB(_,_)) equation
print("Internal Error, can not unelab ASUB\n");
then fail();
// TSUB(expression) => expression
case(DAE.TSUB(e1,_,_)) equation
ae1 = unelabExp(e1);
then ae1;
case(DAE.SIZE(e1,SOME(e2))) equation
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
then Absyn.CALL(Absyn.CREF_IDENT("size",{}),Absyn.FUNCTIONARGS({ae1,ae2},{}),{});
/* WHAT? exactly the same case as above???!!!
case(DAE.SIZE(e1,SOME(e2))) equation
ae1 = unelabExp(e1);
ae2 = unelabExp(e2);
then Absyn.CALL(Absyn.CREF_IDENT("size",{}),Absyn.FUNCTIONARGS({ae1,ae2},{}));
*/
case(DAE.CODE(code,_)) then Absyn.CODE(code);
case DAE.REDUCTION(reductionInfo=DAE.REDUCTIONINFO(iterType=iterType,path=path),expr=e1,iterators=riters)
equation
//print("unelab of reduction not impl. yet");
acref = AbsynUtil.pathToCref(path);
ae1 = unelabExp(e1);
aiters = List.map(riters, unelabReductionIterator);
then Absyn.CALL(acref, Absyn.FOR_ITER_FARG(ae1, iterType, aiters),{});
else
equation
true = Flags.isSet(Flags.FAILTRACE);
print("Expression.unelabExp failed on: " + ExpressionDump.printExpStr(inExp) + "\n");
then
fail();
end matchcontinue;
end unelabExp;
public function unelabDimension
"Transform an DAE.Dimension into Absyn.Subscript, if possible"
input DAE.Dimension inDim;
output Absyn.Subscript outDim;
algorithm
outDim := match (inDim)
local
Integer i;
Absyn.Path p;
Absyn.ComponentRef c;
DAE.Exp e;
Absyn.Exp ae;
case (DAE.DIM_INTEGER(i)) then Absyn.SUBSCRIPT(Absyn.INTEGER(i));
case (DAE.DIM_BOOLEAN()) then Absyn.SUBSCRIPT(Absyn.CREF(Absyn.CREF_IDENT("Boolean", {})));
case (DAE.DIM_ENUM(enumTypeName = p))
equation
c = AbsynUtil.pathToCref(p);
then
Absyn.SUBSCRIPT(Absyn.CREF(c));
case (DAE.DIM_EXP(e))
equation
ae = unelabExp(e);
then
Absyn.SUBSCRIPT(ae);
case (DAE.DIM_UNKNOWN()) then Absyn.NOSUB();
end match;
end unelabDimension;
protected function unleabZeroExpFromType
input DAE.Type ty;
output Absyn.Exp outExp;
algorithm
outExp := match ty
case DAE.T_BOOL() then Absyn.BOOL(false);
case DAE.T_STRING() then Absyn.STRING("");
case DAE.T_INTEGER() then Absyn.INTEGER(0);
case DAE.T_REAL() then Absyn.REAL("0.0");
case DAE.T_UNKNOWN() then Absyn.REAL("0.0"); /* Look at the crap unelabMod needs... */
end match;
end unleabZeroExpFromType;
protected function unelabDimensionToFillExp
"Transform an DAE.Dimension into Absyn.Exp, if possible"
input DAE.Dimension inDim;
output Absyn.Exp outExp;
algorithm
outExp := match (inDim)
local
Integer i;
DAE.Exp e;
case (DAE.DIM_INTEGER(i)) then Absyn.INTEGER(i);
case (DAE.DIM_EXP(e)) then unelabExp(e);
else Absyn.INTEGER(1); /* Probably bad, but only used with zero-length arrays */
end match;
end unelabDimensionToFillExp;
protected function unelabReductionIterator
input DAE.ReductionIterator riter;
output Absyn.ForIterator aiter;
algorithm
aiter := match riter
local
String id;
DAE.Exp exp;
Option<DAE.Exp> gexp;
Absyn.Exp aexp;
Option<Absyn.Exp> agexp;
case DAE.REDUCTIONITER(id=id,exp=exp,guardExp=gexp)
equation
aexp = unelabExp(exp);
agexp = Util.applyOption(gexp, unelabExp);
then Absyn.ITERATOR(id,agexp,SOME(aexp));
end match;
end unelabReductionIterator;
protected function unelabOperator "help function to unelabExpression."
input DAE.Operator op;
output Absyn.Operator aop;
algorithm
aop := match(op)
case(DAE.ADD(_)) then Absyn.ADD();
case(DAE.SUB(_)) then Absyn.SUB();
case(DAE.MUL(_)) then Absyn.MUL();
case(DAE.DIV(_)) then Absyn.DIV();
case(DAE.POW(_)) then Absyn.POW();
case(DAE.UMINUS(_)) then Absyn.UMINUS();
case(DAE.UMINUS_ARR(_)) then Absyn.UMINUS();
case(DAE.ADD_ARR(_)) then Absyn.ADD();
case(DAE.SUB_ARR(_)) then Absyn.SUB();
case(DAE.MUL_ARR(_)) then Absyn.MUL();
case(DAE.DIV_ARR(_)) then Absyn.DIV();
case(DAE.MUL_ARRAY_SCALAR(_)) then Absyn.MUL();
case(DAE.ADD_ARRAY_SCALAR(_)) then Absyn.ADD();
case(DAE.SUB_SCALAR_ARRAY(_)) then Absyn.SUB();
case(DAE.MUL_SCALAR_PRODUCT(_)) then Absyn.MUL();
case(DAE.MUL_MATRIX_PRODUCT(_)) then Absyn.MUL();
case(DAE.DIV_SCALAR_ARRAY(_)) then Absyn.DIV();
case(DAE.DIV_ARRAY_SCALAR(_)) then Absyn.DIV();
case(DAE.POW_SCALAR_ARRAY(_)) then Absyn.POW();
case(DAE.POW_ARRAY_SCALAR(_)) then Absyn.POW();
case(DAE.POW_ARR(_)) then Absyn.POW();
case(DAE.POW_ARR2(_)) then Absyn.POW();
case(DAE.AND(_)) then Absyn.AND();
case(DAE.OR(_)) then Absyn.OR();
case(DAE.NOT(_)) then Absyn.NOT();
case(DAE.LESS(_)) then Absyn.LESS();
case(DAE.LESSEQ(_)) then Absyn.LESSEQ();
case(DAE.GREATER(_)) then Absyn.GREATER();
case(DAE.GREATEREQ(_)) then Absyn.GREATEREQ();
case(DAE.EQUAL(_)) then Absyn.EQUAL();
case(DAE.NEQUAL(_)) then Absyn.NEQUAL();
end match;
end unelabOperator;
public function stringifyCrefs
"This function takes an expression and transforms all component
reference names contained in the expression to a simpler form.
For instance DAE.CREF_QUAL(a,{}, DAE.CREF_IDENT(b,{})) becomes
DAE.CREF_IDENT(a.b,{})
NOTE: This function should not be used in OMC, since the OMC backend no longer
uses stringified components. It is still used by MathCore though."
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := traverseExpDummy(inExp, traversingstringifyCrefFinder);
end stringifyCrefs;
public function traversingstringifyCrefFinder "
helper for stringifyCrefs"
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := match inExp
local
ComponentRef cr,crs;
Type ty;
DAE.Exp e;
list<Boolean> blist;
case DAE.CREF(ty = DAE.T_FUNCTION_REFERENCE_VAR())
then inExp;
case DAE.CREF(ty = DAE.T_FUNCTION_REFERENCE_FUNC())
then inExp;
case DAE.CREF(cr,ty)
equation
crs = ComponentReference.stringifyComponentRef(cr);
then makeCrefExp(crs,ty);
else inExp;
end match;
end traversingstringifyCrefFinder;
public function CodeVarToCref
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := match(inExp)
local
ComponentRef e_cref;
Absyn.ComponentRef cref;
DAE.Exp e;
case(DAE.CODE(Absyn.C_VARIABLENAME(cref),_))
equation
(_,e_cref) = Static.elabUntypedCref(FCore.emptyCache(),FGraph.empty(),cref,false,DAE.NOPRE(),AbsynUtil.dummyInfo);
e = crefExp(e_cref);
then
e;
case(DAE.CODE(Absyn.C_EXPRESSION(Absyn.CALL(function_ = Absyn.CREF_IDENT("der",{}), functionArgs = Absyn.FUNCTIONARGS({Absyn.CREF(cref)},{}))),_))
equation
(_,e_cref) = Static.elabUntypedCref(FCore.emptyCache(),FGraph.empty(),cref,false,DAE.NOPRE(),AbsynUtil.dummyInfo);
e = crefExp(e_cref);
then
DAE.CALL(Absyn.IDENT("der"),{e},DAE.callAttrBuiltinReal);
end match;
end CodeVarToCref;
public function realToIntIfPossible
"converts to ICONST if possible. If it does
not fit, a RCONST is returned instead."
input Real inVal;
output DAE.Exp outVal;
algorithm
try
outVal := DAE.ICONST(realInt(inVal));
else
outVal := DAE.RCONST(inVal);
end try;
end realToIntIfPossible;
public function liftArrayR "
function liftArrayR
Converts a type into an array type with dimension n as first dim"
input DAE.Type tp;
input DAE.Dimension n;
output DAE.Type outTp;
algorithm
outTp := match(tp,n)
local
Type elt_tp;
list<DAE.Dimension> dims;
case(DAE.T_ARRAY(elt_tp,dims),_)
equation
dims = n::dims;
then
DAE.T_ARRAY(elt_tp,dims);
else DAE.T_ARRAY(tp,{n});
end match;
end liftArrayR;
public function dimensionSizeConstantExp
"Converts (extracts) a dimension to an expression.
This function will fail if dimension is unknown or an expression (in case the dimension is from a different scope).
If you want to(kind of) handle unknown dims use dimensionSizeExpHandleUnkown."
input DAE.Dimension dim;
output DAE.Exp exp;
algorithm
exp := match(dim)
local
Integer i;
case DAE.DIM_INTEGER(integer = i) then DAE.ICONST(i);
case DAE.DIM_ENUM(size = i) then DAE.ICONST(i);
case DAE.DIM_BOOLEAN() then DAE.ICONST(2);
end match;
end dimensionSizeConstantExp;
public function dimensionSizeExp
"Converts (extracts) a dimension to an expression.
This function will fail if dimension is unknown. i.e. DIM_UNKNOWN.
If you want to(kind of) handle unknown dims use dimensionSizeExpHandleUnkown."
input DAE.Dimension dim;
output DAE.Exp exp;
algorithm
exp := match(dim)
local
Integer i;
DAE.Exp e;
case DAE.DIM_INTEGER(integer = i) then DAE.ICONST(i);
case DAE.DIM_ENUM(size = i) then DAE.ICONST(i);
case DAE.DIM_BOOLEAN() then DAE.ICONST(2);
case DAE.DIM_EXP(exp = e) then e;
end match;
end dimensionSizeExp;
public function dimensionSizeExpHandleUnkown
"Converts (extracts) a dimension to an expression.
This function will change unknown dims to DAE.ICONST(-1).
we use it to handle unknown dims in code generation. unknown dims
are okay if the variable is a function input (it's just holds the slot
and will not be generated). Otherwise it's an error
since it shouldn't have reached there."
input DAE.Dimension dim;
output DAE.Exp exp;
algorithm
exp := match(dim)
case DAE.DIM_UNKNOWN() then DAE.ICONST(-1);
else dimensionSizeExp(dim);
end match;
end dimensionSizeExpHandleUnkown;
public function intDimension
"Converts an integer to an array dimension."
input Integer value;
output DAE.Dimension dim;
annotation(__OpenModelica_EarlyInline = true);
algorithm
dim := DAE.DIM_INTEGER(value);
end intDimension;
public function dimensionSubscript
"Converts an array dimension to a subscript."
input DAE.Dimension dim;
output DAE.Subscript sub;
algorithm
sub := match(dim)
local
Integer i;
case DAE.DIM_INTEGER(integer = i) then DAE.INDEX(DAE.ICONST(i));
case DAE.DIM_ENUM(size = i) then DAE.INDEX(DAE.ICONST(i));
case DAE.DIM_BOOLEAN() then DAE.INDEX(DAE.ICONST(2));
case DAE.DIM_UNKNOWN() then DAE.WHOLEDIM();
end match;
end dimensionSubscript;
/***************************************************/
/* Change */
/***************************************************/
public function negate
"author: PA
Negates an expression."
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := match(inExp)
local
Type t;
Operator op;
Boolean b,b_1;
Real r,r_1;
Integer i,i_1;
DAE.Exp e,e1,e2;
// to avoid un-necessary --e
case(DAE.UNARY(DAE.UMINUS(_),e)) then e;
case(DAE.UNARY(DAE.UMINUS_ARR(_),e)) then e;
case(DAE.LUNARY(DAE.NOT(_),e)) then e;
// -(a*b) = (-a)*b
// -(a/b) = (-a)/b
case(DAE.BINARY(e1,op,e2)) guard(isMulOrDiv(op))
then DAE.BINARY(negate(e1),op,e2);
// -(a-b) = b-a
case(DAE.BINARY(e1,op,e2)) guard(isSub(op))
then DAE.BINARY(e2,op,e1);
case e // -0 = 0
guard isZero(e)
then e;
case (DAE.ICONST(i))
equation
i_1 = 0 - i;
then DAE.ICONST(i_1);
case (DAE.RCONST(r))
equation
r_1 = 0.0 - r;
then DAE.RCONST(r_1);
case (DAE.BCONST(b))
equation
b_1 = not b;
then DAE.BCONST(b_1);
case(e)
equation
t = typeof(e);
outExp = match (t)
case (DAE.T_BOOL()) // not e
then DAE.LUNARY(DAE.NOT(t),e);
else
equation
b = DAEUtil.expTypeArray(t);
op = if b then DAE.UMINUS_ARR(t) else DAE.UMINUS(t);
then DAE.UNARY(op,e);
end match;
then
outExp;
end match;
end negate;
public function negateReal
input DAE.Exp inReal;
output DAE.Exp outNegatedReal;
algorithm
outNegatedReal := DAE.UNARY(DAE.UMINUS(DAE.T_REAL_DEFAULT), inReal);
end negateReal;
public function expand "expands products
For example
a *(b+c) => a*b + a*c"
input DAE.Exp e;
output DAE.Exp outE;
algorithm
outE := match(e)
local
DAE.Type tp;
DAE.Operator op;
DAE.Exp e1,e2,e21,e22;
case(DAE.BINARY(e1,DAE.MUL(tp),e2 as DAE.BINARY(e21,op,e22))) guard isAddOrSub(op)
equation
DAE.BINARY(e21,op,e22) = expand(e2);
then
DAE.BINARY(DAE.BINARY(e1,DAE.MUL(tp),e21),op,DAE.BINARY(e1,DAE.MUL(tp),e22));
else e;
end match;
end expand;
public function expDer
"author: Frenkel TUD 2012-11
exp -> der(exp)"
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := DAE.CALL(Absyn.IDENT("der"),{inExp},DAE.callAttrBuiltinReal);
end expDer;
public function expAbs
"author: PA
Makes the expression absolute. i.e. non-negative."
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := match(inExp)
local
Integer i2,i;
Real r2,r;
DAE.Exp e_1,e,e1_1,e2_1,e1,e2;
Type tp;
Operator op;
case (DAE.ICONST(integer = i))
equation
i2 = intAbs(i);
then
DAE.ICONST(i2);
case (DAE.RCONST(real = r))
equation
r2 = realAbs(r);
then
DAE.RCONST(r2);
case (DAE.UNARY(operator = DAE.UMINUS(),exp = e))
equation
e_1 = expAbs(e);
then
e_1;
case (DAE.BINARY(exp1 = e1,operator = op,exp2 = e2))
equation
e1_1 = expAbs(e1);
e2_1 = expAbs(e2);
then
DAE.BINARY(e1_1,op,e2_1);
else inExp;
end match;
end expAbs;
public function stripNoEvent
"Function that strips all noEvent() calls in an expression"
input DAE.Exp e;
output DAE.Exp outE;
algorithm
outE := traverseExpDummy(e,stripNoEventExp);
end stripNoEvent;
protected function stripNoEventExp "
traversal function for stripNoEvent"
input DAE.Exp e;
output DAE.Exp outExp;
algorithm
outExp := match e
case DAE.CALL(path=Absyn.IDENT("noEvent"),expLst={outExp}) then outExp;
else e;
end match;
end stripNoEventExp;
public function addNoEventToRelations
"Function that adds a noEvent() call to all relations in an expression"
input DAE.Exp e;
output DAE.Exp outE;
algorithm
outE := traverseExpDummy(e,addNoEventToRelationExp);
end addNoEventToRelations;
protected function addNoEventToRelationExp "
traversal function for addNoEventToRelations"
input DAE.Exp e;
output DAE.Exp outExp;
algorithm
outExp := match e
case DAE.RELATION() then makeNoEvent(e);
else e;
end match;
end addNoEventToRelationExp;
public function addNoEventToRelationsAndConds
"Function that adds a noEvent() call to all relations in an expression"
input DAE.Exp e;
output DAE.Exp outE;
algorithm
outE := traverseExpDummy(e,addNoEventToRelationandCondExp);
end addNoEventToRelationsAndConds;
protected function addNoEventToRelationandCondExp "
traversal function for addNoEventToRelationsAndConds"
input DAE.Exp e;
output DAE.Exp outExp;
algorithm
outExp := match e
local
DAE.Exp e1,e2,e3;
case DAE.RELATION() then makeNoEvent(e);
case DAE.IFEXP(e1,e2,e3) then DAE.IFEXP(makeNoEvent(e1),e2,e3);
else e;
end match;
end addNoEventToRelationandCondExp;
public function addNoEventToEventTriggeringFunctions
" Function that adds a noEvent() call to all event triggering functions in an expression"
input DAE.Exp e;
output DAE.Exp outE;
algorithm
outE := traverseExpDummy(e,addNoEventToEventTriggeringFunctionsExp);
end addNoEventToEventTriggeringFunctions;
protected function addNoEventToEventTriggeringFunctionsExp "
traversal function for addNoEventToEventTriggeringFunctions"
input DAE.Exp e;
output DAE.Exp outExp;
algorithm
outExp := match e
case DAE.CALL()
guard
isEventTriggeringFunctionExp(e)
then makeNoEvent(e);
else e;
end match;
end addNoEventToEventTriggeringFunctionsExp;
public function expStripLastSubs
"Strips the last subscripts of a Exp"
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp := match (inExp)
local
ComponentRef cr,cr_1;
Type ty;
Operator op,op1;
DAE.Exp e,e_1;
Boolean b;
case (DAE.CREF(componentRef=cr))
equation
ty = ComponentReference.crefLastType(cr);
cr_1 = ComponentReference.crefStripLastSubs(cr);
e = makeCrefExp(cr_1, ty);
then
e;
case (DAE.UNARY(exp=e))
equation
e_1 = expStripLastSubs(e);
ty = typeof(e_1);
b = DAEUtil.expTypeArray(ty);
op1 = if b then DAE.UMINUS_ARR(ty) else DAE.UMINUS(ty);
then
DAE.UNARY(op1,e_1);
end match;
end expStripLastSubs;
public function expStripLastIdent
"Strips the last identifier of a cref Exp"
input DAE.Exp inExp;
output DAE.Exp outExp;
algorithm
outExp:=
match (inExp)
local
ComponentRef cr,cr_1;
Type ty;
Operator op,op1;
DAE.Exp e,e_1;
Boolean b;
case (DAE.CREF(componentRef=cr))
equation
cr_1 = ComponentReference.crefStripLastIdent(cr);
ty = ComponentReference.crefLastType(cr_1);
e = makeCrefExp(cr_1, ty);
then
e;
case (DAE.UNARY(exp=e))
equation
e_1 = expStripLastIdent(e);
ty = typeof(e_1);
b = DAEUtil.expTypeArray(ty);
op1 = if b then DAE.UMINUS_ARR(ty) else DAE.UMINUS(ty);
then
DAE.UNARY(op1,e_1);
end match;
end expStripLastIdent;
public function prependSubscriptExp
"Prepends a subscript to a CREF expression
For instance a.b[1,2] with subscript 'i' becomes a.b[i,1,2]."
input DAE.Exp exp;
input DAE.Subscript subscr;
output DAE.Exp outExp;
algorithm
outExp := match(exp,subscr)
local
Type t; ComponentRef cr,cr1,cr2;
list<DAE.Subscript> subs;
DAE.Exp e;
case (DAE.CREF(cr,t),_)
equation
cr1 = ComponentReference.crefStripLastSubs(cr);
subs = ComponentReference.crefLastSubs(cr);
cr2 = ComponentReference.subscriptCref(cr1,subscr::subs);
e = makeCrefExp(cr2, t);
then
e;
end match;
end prependSubscriptExp;
public function applyExpSubscripts
"@mahge
Takes an expression and a list of subscripts and subscripts
the given expression.
If a component reference is given the subs are applied to it.
If an array(DAE.ARRAY) is given the element at the specified
subscripts is returned. Otherwise and ASUB is built and returned.
e.g. subscriptExp on ({{1,2},{3,4}}) with sub [2,1] gives 3
subscriptExp on (a) with sub [2,1] gives a[2,1]
"
input output DAE.Exp exp;
input list<DAE.Subscript> inSubs;
protected
String str;
algorithm
try
exp := applyExpSubscripts2(exp, inSubs);
else
str := "Expression.applyExpSubscripts failed applying subs: [" + ExpressionDump.printSubscriptLstStr(inSubs)
+ "] on expression:" + ExpressionDump.printExpStr(exp) + "\n";
Error.addMessage(Error.INTERNAL_ERROR, {str});
end try;
end applyExpSubscripts;
public function applyExpSubscriptsFoldCheckSimplify "
author: PA
Takes an arbitrary expression and applies subscripts to it. This is done by creating asub
expressions given the original expression and then simplify them.
Note: The subscripts must be INDEX
alternative names: subsriptExp (but already taken), subscriptToAsub
This version of the function also returns a boolean stating if simplify
improved anything (can be used as a heuristic if you want to apply
the subscript when scalarizing)
Note: mahge. Uses of this function should be replaced by applyExpSubscripts. I have not
replaced them because I could not make sense of the usage in Backend/RemoveSimpleEquations.
It uses the checkSimplify arg and I am not sure what it expects or is supposed to do with the result."
input output DAE.Exp exp;
input list<DAE.Subscript> inSubs;
input output Boolean checkSimplify = false;
protected
Boolean b;
DAE.Exp s;
algorithm
for sub in inSubs loop
// Apply one subscript at a time, so simplify works fine on it.
//s := subscriptIndexExp(sub);
try
s := getSubscriptExp(sub);
(exp,b) := ExpressionSimplify.simplify(makeASUB(exp,{s}));
checkSimplify := b or checkSimplify;
else
// skipped DAE.WHOLEDIM
end try;
end for;
end applyExpSubscriptsFoldCheckSimplify;
public function applyExpSubscripts2
"@mahge
Takes an expression and a list of subscripts and subscripts
the given expression.