public ArrayNameNode(ArrayNameNode rhs) : base(rhs)
{
ArrayDimensions = null;
if (null != rhs.ArrayDimensions)
{
ArrayDimensions = new ArrayNode(rhs.ArrayDimensions);
}
}
public ArrayNameNode(ArrayNameNode rhs)
: base(rhs)
{
ArrayDimensions = null;
if (null != rhs.ArrayDimensions)
{
ArrayDimensions = new ArrayNode(rhs.ArrayDimensions);
}
}
public ArrayNode(ArrayNode rhs)
: base(rhs)
{
Expr = null;
Type = null;
if (null != rhs)
{
if (null != rhs.Expr)
{
Expr = ProtoCore.Utils.NodeUtils.Clone(rhs.Expr);
}
if (null != rhs.Type)
{
Type = ProtoCore.Utils.NodeUtils.Clone(rhs.Type);
}
}
}
public ArrayNode(ArrayNode rhs)
: base(rhs)
{
Expr = null;
Type = null;
if (null != rhs)
{
if (null != rhs.Expr)
{
Expr = ProtoCore.Utils.NodeUtils.Clone(rhs.Expr);
}
if (null != rhs.Type)
{
Type = ProtoCore.Utils.NodeUtils.Clone(rhs.Type);
}
}
}
private void EmitVarDeclNode(ImperativeNode node, ref ProtoCore.Type inferedType)
{
VarDeclNode varNode = node as VarDeclNode;
ProtoCore.Type type = BuildArgumentTypeFromVarDeclNode(varNode);
type.IsIndexable = false;
// TODO Jun: Create a class table for holding the primitive and custom data types
const int primitivesize = 1;
int datasize = primitivesize;
int symindex = ProtoCore.DSASM.Constants.kInvalidIndex;
IdentifierNode tVar = null;
if (varNode.NameNode is IdentifierNode)
{
// Allocate with no initializer
tVar = varNode.NameNode as IdentifierNode;
ProtoCore.DSASM.SymbolNode symnode = Allocate(tVar.Value, globalProcIndex, type, datasize, datasize, tVar.ArrayDimensions, varNode.memregion);
symindex = symnode.symbolTableIndex;
}
else if (varNode.NameNode is BinaryExpressionNode)
{
BinaryExpressionNode bNode = varNode.NameNode as BinaryExpressionNode;
tVar = bNode.LeftNode as IdentifierNode;
Debug.Assert(null != tVar, "Check generated AST");
Debug.Assert(null != bNode.RightNode, "Check generated AST");
ProtoCore.DSASM.SymbolNode symnode = null;
// Is it an array
if (null != tVar.ArrayDimensions)
{
// Allocate an array with initializer
if (bNode.RightNode is ExprListNode)
{
ExprListNode exprlist = bNode.RightNode as ExprListNode;
int size = datasize * exprlist.list.Count;
symnode = Allocate(tVar.Value, globalProcIndex, type, size, datasize, tVar.ArrayDimensions, varNode.memregion);
symindex = symnode.symbolTableIndex;
for (int n = 0; n < exprlist.list.Count; ++n)
{
DfsTraverse(exprlist.list[n], ref inferedType);
ArrayNode array = new ArrayNode();
array.Expr = nodeBuilder.BuildIdentfier(n.ToString(), PrimitiveType.kTypeInt);
array.Type = null;
DfsEmitArrayIndex(array, symindex);
EmitInstrConsole(ProtoCore.DSASM.kw.pop, ProtoCore.DSASM.kw.regDX);
ProtoCore.DSASM.StackValue opRes = new ProtoCore.DSASM.StackValue();
opRes.optype = ProtoCore.DSASM.AddressType.Register;
opRes.opdata = (int)ProtoCore.DSASM.Registers.DX;
EmitPop(opRes, Constants.kGlobalScope);
EmitInstrConsole(ProtoCore.DSASM.kw.pop, tVar.Value);
EmitPopForSymbol(symnode);
}
}
else
{
buildStatus.LogSemanticError("array initializer must be an expression list", compileStateTracker.CurrentDSFileName, bNode.RightNode.line, bNode.RightNode.col);
}
}
else
{
// Allocate a single variable with initializer
symnode = Allocate(tVar.Value, globalProcIndex, type, datasize, datasize, tVar.ArrayDimensions, varNode.memregion);
symindex = symnode.symbolTableIndex;
DfsTraverse(bNode.RightNode, ref inferedType);
EmitInstrConsole(ProtoCore.DSASM.kw.pop, tVar.Value);
EmitPopForSymbol(symnode);
}
}
else
{
Debug.Assert(false, "Check generated AST");
}
if (ProtoCore.DSASM.Constants.kInvalidIndex == symindex)
{
throw new BuildHaltException("0CB5BD17");
}
}
private void EmitForLoopNode(ImperativeNode node, ref ProtoCore.Type inferredType, bool isBooleanOp = false, ProtoCore.AssociativeGraph.GraphNode graphNode = null)
{
if (IsParsingGlobal() || IsParsingGlobalFunctionBody())
{
/*
x = 0;
a = {10,20,30,40}
for(val in a)
{
x = x + val;
}
Compiles down to:
x = 0;
a = {10,20,30,40};
val = null;
__autogen_count = 0;
__autogen_iterations = a.size;
while( __autogen_count < __autogen_iterations)
{
val = a[__autogen_count];
__autogen_count = __autogen_count + 1;
x = x + val;
}
*/
DebugProperties.BreakpointOptions oldOptions = compileStateTracker.DebugProps.breakOptions;
DebugProperties.BreakpointOptions newOptions = oldOptions;
newOptions |= DebugProperties.BreakpointOptions.EmitCallrForTempBreakpoint;
compileStateTracker.DebugProps.breakOptions = newOptions;
// TODO Jun: This compilation unit has many opportunities for optimization
// 1. Compiling to while need not be necessary if 'expr' has exactly one element
// 2. For-loop can have its own semantics without the need to convert to a while node
ForLoopNode forNode = node as ForLoopNode;
++forloopCounter; //new forloop beginning. increment loop counter
// Generate the expression for ‘id’ initialized to null
BinaryExpressionNode forIdentInit = new BinaryExpressionNode();
forIdentInit.Optr = ProtoCore.DSASM.Operator.assign;
IdentifierNode forIdent = nodeBuilder.BuildIdentfier(forNode.loopVar.Name) as IdentifierNode;
forIdent.ArrayName = forNode.expression.Name;
//IdentifierNode forLoopArrayIdent = nodeBuilder.BuildIdentfier(forNode.expression.Name) as IdentifierNode;
ProtoCore.Utils.NodeUtils.CopyNodeLocation(forIdent, forNode.loopVar);
forIdentInit.LeftNode = forIdent;
forIdentInit.RightNode = new NullNode();
ProtoCore.Type type = new ProtoCore.Type();
type.UID = (int)PrimitiveType.kTypeVoid;
type.IsIndexable = false;
ProtoCore.Utils.NodeUtils.CopyNodeLocation(forIdentInit, forNode);
forIdentInit.endLine = forIdentInit.line;
forIdentInit.endCol = forIdentInit.col + 3;
EmitBinaryExpressionNode(forIdentInit, ref type, isBooleanOp, graphNode);
// Generate the expression for autogen counter initialized to 0
string forCountIdent = GetForCountIdent();
var nodeCounter = nodeBuilder.BuildIdentfier(forCountIdent);
BinaryExpressionNode forcounterExpr = new BinaryExpressionNode();
forcounterExpr.Optr = ProtoCore.DSASM.Operator.assign;
forcounterExpr.LeftNode = nodeCounter;
forcounterExpr.RightNode = new IntNode { value = "0" };
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(forcounterExpr, ref type, isBooleanOp, graphNode);
// Generate the expression for autogen iterations initialized to 0
string forIterCountVar = GetForIterationVar();
var nodeIterCount = nodeBuilder.BuildIdentfier(forIterCountVar);
BinaryExpressionNode forIterations = new BinaryExpressionNode();
forIterations.Optr = ProtoCore.DSASM.Operator.assign;
forIterations.LeftNode = nodeIterCount;
forIterations.RightNode = new IntNode { value = "0" };
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(forIterations, ref type, isBooleanOp, graphNode);
// Generate the expression for autogen iteration count assigned to the size of ‘expr’
// Create a temp array variable if 'expr' is an array
string identName = GetForExprIdent();
var exprIdent = nodeBuilder.BuildIdentfier(identName);
NodeUtils.CopyNodeLocation(exprIdent, forNode.expression);
BinaryExpressionNode arrayexprAssignment = new BinaryExpressionNode();
arrayexprAssignment.Optr = ProtoCore.DSASM.Operator.assign;
arrayexprAssignment.LeftNode = exprIdent;
arrayexprAssignment.RightNode = forNode.expression;
NodeUtils.UpdateBinaryExpressionLocation(arrayexprAssignment);
bool shouldBreakOnTemporary = false;
switch (forNode.expression.GetType().ToString())
{
case "ProtoCore.AST.ImperativeAST.IdentifierNode":
case "ProtoCore.AST.ImperativeAST.ExprListNode":
shouldBreakOnTemporary = true;
break;
}
if (false == shouldBreakOnTemporary)
{
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(arrayexprAssignment, ref type, isBooleanOp, graphNode);
}
else
{
newOptions |= DebugProperties.BreakpointOptions.EmitPopForTempBreakpoint;
compileStateTracker.DebugProps.breakOptions = newOptions;
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(arrayexprAssignment, ref type, isBooleanOp, graphNode);
}
compileStateTracker.DebugProps.breakOptions = oldOptions; // Restore breakpoint behaviors.
// Comment Jun: Compile such that the the forloop 'expr' is always assumed to be an array
// If it was passed a singleton, the runtime will handle it accordingly
////if ((int)PrimitiveType.kTypeArray != type)
//if (false)
//{
// // 'expr' is not an array so it can be assigned directly to 'id'
// BinaryExpressionNode exprToIdent = new BinaryExpressionNode();
// exprToIdent.Optr = ProtoCore.DSASM.Operator.assign;
// exprToIdent.LeftNode = forIdent;
// exprToIdent.RightNode = forNode.expression;
// forNode.body.Insert(0, exprToIdent);
// // There is no loop since 'expr' is a single element. Traverse the for loop body directly
// type = (int)ProtoCore.PrimitiveType.kTypeVoid;
// if (null != forNode.body)
// {
// foreach (ImperativeNode bodyNode in forNode.body)
// {
// DfsTraverse(bodyNode, ref type);
// }
// }
//}
//else
//{
// 'expr' is an array
// Get the size of expr and assign it to the autogen iteration var
int symbolIndex = Constants.kInvalidIndex;
SymbolNode symbol = null;
if (ProtoCore.DSASM.Constants.kInvalidIndex != globalClassIndex && !IsInLanguageBlockDefinedInFunction())
{
symbolIndex = compileStateTracker.ClassTable.ClassNodes[globalClassIndex].symbols.IndexOf(identName);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = compileStateTracker.ClassTable.ClassNodes[globalClassIndex].symbols.symbolList[symbolIndex];
}
}
else
{
symbolIndex = codeBlock.symbolTable.IndexOf(identName);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = codeBlock.symbolTable.symbolList[symbolIndex];
}
}
EmitInstrConsole(ProtoCore.DSASM.kw.pushvarsize, identName);
EmitPushVarSize(symbolIndex, codeBlock.symbolTable.runtimeIndex, (symbol == null) ? globalClassIndex : symbol.classScope);
// Push the identifier local block information
// Push the array dimensions
int dimensions = 0;
EmitPushVarData(codeBlock.symbolTable.runtimeIndex, dimensions);
ProtoCore.DSASM.StackValue opDest = new ProtoCore.DSASM.StackValue();
opDest.optype = ProtoCore.DSASM.AddressType.VarIndex;
if (ProtoCore.DSASM.Constants.kInvalidIndex != globalClassIndex && !IsInLanguageBlockDefinedInFunction())
{
symbolIndex = compileStateTracker.ClassTable.ClassNodes[globalClassIndex].symbols.IndexOf(forIterCountVar);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = compileStateTracker.ClassTable.ClassNodes[globalClassIndex].symbols.symbolList[symbolIndex];
}
}
else
{
symbolIndex = codeBlock.symbolTable.IndexOf(forIterCountVar);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = codeBlock.symbolTable.symbolList[symbolIndex];
}
}
opDest.opdata = symbolIndex;
EmitInstrConsole(ProtoCore.DSASM.kw.pop, forIterCountVar);
EmitPop(opDest, (symbol == null) ? globalClassIndex : symbol.classScope);
// Generate the comparison expression between the autogen counter and the autogen iteration count
BinaryExpressionNode iterCondition = new BinaryExpressionNode();
iterCondition.Optr = ProtoCore.DSASM.Operator.lt;
iterCondition.LeftNode = nodeCounter;
iterCondition.RightNode = nodeIterCount;
iterCondition.line = forNode.KwInLine;
iterCondition.col = forNode.KwInCol;
iterCondition.endLine = forNode.KwInLine;
iterCondition.endCol = forNode.KwInCol + 2; // 2 character for keyword "in".
// Generate the assignment statement from where lhs is ‘id’ and rhs is ‘expr’ indexed into the autogen count
BinaryExpressionNode IndexedExprToId = new BinaryExpressionNode();
IndexedExprToId.Optr = ProtoCore.DSASM.Operator.assign;
IndexedExprToId.LeftNode = forIdent;
// Array index into the expr ident
ArrayNode arrayIndex = new ArrayNode();
arrayIndex.Expr = nodeCounter;
arrayIndex.Type = null;
(exprIdent as IdentifierNode).ArrayDimensions = arrayIndex;
IndexedExprToId.RightNode = exprIdent;
IndexedExprToId.line = forIdent.line;
IndexedExprToId.col = forIdent.col;
IndexedExprToId.endLine = forIdent.endLine;
IndexedExprToId.endCol = forIdent.endCol;
// Generate the expression for increment by 1 of the autogen count
var countIncrement = nodeBuilder.BuildBinaryExpression(nodeCounter, new IntNode { value = "1" }, Operator.add);
var countIncrementAssign = nodeBuilder.BuildBinaryExpression(nodeCounter, countIncrement);
// Append the array indexing and increment expressions into the for-loop body
forNode.body.Insert(0, IndexedExprToId);
forNode.body.Insert(1, countIncrementAssign);
// Construct and populate the equivalent while node
WhileStmtNode whileNode = new WhileStmtNode();
whileNode.Expr = iterCondition;
whileNode.Body = forNode.body;
whileNode.endLine = node.endLine;
whileNode.endCol = node.endCol;
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitWhileStmtNode(whileNode, ref type, isBooleanOp, graphNode);
//}
// Comment Jun: The for loop counter must be unique and does not need to reset
//forloopCounter--; //for loop ended. decrement counter
}
}
private void EmitVarDeclNode(ImperativeNode node, ref ProtoCore.Type inferedType)
{
VarDeclNode varNode = node as VarDeclNode;
ProtoCore.Type type = new ProtoCore.Type();
type.UID = compileState.TypeSystem.GetType(varNode.ArgumentType.Name);
type.IsIndexable = false;
// TODO Jun: Create a class table for holding the primitive and custom data types
const int primitivesize = 1;
int datasize = primitivesize;
int symindex = ProtoCore.DSASM.Constants.kInvalidIndex;
IdentifierNode tVar = null;
if (varNode.NameNode is IdentifierNode)
{
// Allocate with no initializer
tVar = varNode.NameNode as IdentifierNode;
ProtoCore.DSASM.SymbolNode symnode = Allocate(tVar.Value, globalProcIndex, type, datasize, datasize, tVar.ArrayDimensions, varNode.memregion);
IdentLocation.AddEntry(symnode, tVar.line, tVar.col, compileState.CurrentDSFileName);
symindex = symnode.symbolTableIndex;
}
else if (varNode.NameNode is BinaryExpressionNode)
{
BinaryExpressionNode bNode = varNode.NameNode as BinaryExpressionNode;
tVar = bNode.LeftNode as IdentifierNode;
Debug.Assert(null != tVar, "Check generated AST");
Debug.Assert(null != bNode.RightNode, "Check generated AST");
ProtoCore.DSASM.SymbolNode symnode = null;
// Is it an array
if (null != tVar.ArrayDimensions)
{
// Allocate an array with initializer
if (bNode.RightNode is ExprListNode)
{
ExprListNode exprlist = bNode.RightNode as ExprListNode;
int size = datasize * exprlist.list.Count;
symnode = Allocate(tVar.Value, globalProcIndex, type, size, datasize, tVar.ArrayDimensions, varNode.memregion);
symindex = symnode.symbolTableIndex;
IdentLocation.AddEntry(symnode, tVar.line, tVar.col, compileState.CurrentDSFileName);
for (int n = 0; n < exprlist.list.Count; ++n)
{
DfsTraverse(exprlist.list[n], ref inferedType);
IdentifierNode t = new IdentifierNode();
t.Value = n.ToString();
t.datatype = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeInt, false);
ArrayNode array = new ArrayNode();
array.Expr = t;
array.Type = null;
DfsEmitArrayIndex(array, symindex);
}
}
}
else
{
// Allocate a single variable with initializer
symnode = Allocate(tVar.Value, globalProcIndex, type, datasize, datasize, tVar.ArrayDimensions, varNode.memregion);
IdentLocation.AddEntry(symnode, tVar.line, tVar.col, compileState.CurrentDSFileName);
symindex = symnode.symbolTableIndex;
DfsTraverse(bNode.RightNode, ref inferedType);
}
}
else
{
Debug.Assert(false, "Check generated AST");
}
if (ProtoCore.DSASM.Constants.kInvalidIndex == symindex)
{
throw new BuildHaltException();
}
}
private void EmitForLoopNode(ImperativeNode node)
{
if (IsParsingGlobal() || IsParsingGlobalFunctionBody())
{
/*
*
x = 0;
a = {10,20,30,40}
for(val in a)
{
x = x + val;
}
Compiles down to:
x = 0;
a = {10,20,30,40};
val = null;
__autogen_count = 0;
__autogen_iterations = a.size;
while( __autogen_count < __autogen_iterations)
{
val = a[__autogen_count];
__autogen_count = __autogen_count + 1;
x = x + val;
}
*/
// TODO Jun: This compilation unit has many opportunities for optimization
// 1. Compiling to while need not be necessary if 'expr' has exactly one element
// 2. For-loop can have its own semantics without the need to convert to a while node
ForLoopNode forNode = node as ForLoopNode;
++forloopCounter; //new forloop beginning. increment loop counter
// Generate the expression for ‘id’ initialized to null
BinaryExpressionNode forIdentInit = new BinaryExpressionNode();
forIdentInit.Optr = ProtoCore.DSASM.Operator.assign;
IdentifierNode forIdent = new IdentifierNode()
{
Value = forNode.loopVar.Name,
Name = forNode.loopVar.Name,
datatype = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVar, false),
line = forNode.loopVar.line,
col = forNode.loopVar.col,
endLine = forNode.loopVar.line,
endCol = forNode.loopVar.col + forNode.loopVar.Name.Length - 1
};
forIdentInit.LeftNode = forIdent;
forIdentInit.RightNode = new NullNode();
ProtoCore.Type type = new ProtoCore.Type();
type.UID = (int)PrimitiveType.kTypeVoid;
type.IsIndexable = false;
forIdentInit.line = forNode.KwForLine;
forIdentInit.col = forNode.KwForCol;
forIdentInit.endLine = forNode.KwForLine;
forIdentInit.endCol = forNode.KwForCol + 2;
EmitBinaryExpressionNode(forIdentInit, ref type);
// Generate the expression for autogen counter initialized to 0
string forCountIdent = GetForCountIdent();
IdentifierNode nodeCounter = new IdentifierNode()
{
Value = forCountIdent,
Name = forCountIdent,
datatype = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVar, false)
};
BinaryExpressionNode forcounterExpr = new BinaryExpressionNode();
forcounterExpr.Optr = ProtoCore.DSASM.Operator.assign;
forcounterExpr.LeftNode = nodeCounter;
forcounterExpr.RightNode = new IntNode() { value = "0" };
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(forcounterExpr, ref type);
// Generate the expression for autogen iterations initialized to 0
string forIterCountVar = GetForIterationVar();
IdentifierNode nodeIterCount = new IdentifierNode()
{
Value = forIterCountVar,
Name = forIterCountVar,
datatype = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVar, false)
};
BinaryExpressionNode forIterations = new BinaryExpressionNode();
forIterations.Optr = ProtoCore.DSASM.Operator.assign;
forIterations.LeftNode = nodeIterCount;
forIterations.RightNode = new IntNode() { value = "0" };
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(forIterations, ref type);
/*
// Generate the expression for autogen iteration count assigned to the size of ‘expr’
string identName = null;
IdentifierNode exprIdent = null;
if (forNode.expression is IdentifierNode)
{
exprIdent = forNode.expression as IdentifierNode;
identName = exprIdent.Value;
}
else if (forNode.expression is ExprListNode)
{
// Create a temp array variable if 'expr' is an array
identName = GetForExprIdent();
exprIdent = new IdentifierNode()
{
Value = identName,
Name = identName,
type = (int)ProtoCore.PrimitiveType.kTypeVar,
datatype = ProtoCore.PrimitiveType.kTypeVar
};
BinaryExpressionNode arrayexprAssignment = new BinaryExpressionNode();
arrayexprAssignment.Optr = ProtoCore.DSASM.Operator.assign;
arrayexprAssignment.LeftNode = exprIdent;
arrayexprAssignment.RightNode = forNode.expression as ExprListNode;
type = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(arrayexprAssignment, ref type);
}
*/
// Generate the expression for autogen iteration count assigned to the size of ‘expr’
// Create a temp array variable if 'expr' is an array
string identName = GetForExprIdent();
IdentifierNode exprIdent = new IdentifierNode()
{
Value = identName,
Name = identName,
datatype = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVar, false)
};
BinaryExpressionNode arrayexprAssignment = new BinaryExpressionNode();
arrayexprAssignment.Optr = ProtoCore.DSASM.Operator.assign;
arrayexprAssignment.LeftNode = exprIdent;
arrayexprAssignment.RightNode = forNode.expression;
arrayexprAssignment.line = forNode.expression.line;
arrayexprAssignment.col = forNode.expression.col;
arrayexprAssignment.endLine = forNode.expression.endLine;
arrayexprAssignment.endCol = forNode.expression.endCol;
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(arrayexprAssignment, ref type);
// Comment Jun: Compile such that the the forloop 'expr' is always assumed to be an array
// If it was passed a singleton, the runtime will handle it accordingly
////if ((int)PrimitiveType.kTypeArray != type)
//if (false)
//{
// // 'expr' is not an array so it can be assigned directly to 'id'
// BinaryExpressionNode exprToIdent = new BinaryExpressionNode();
// exprToIdent.Optr = ProtoCore.DSASM.Operator.assign;
// exprToIdent.LeftNode = forIdent;
// exprToIdent.RightNode = forNode.expression;
// forNode.body.Insert(0, exprToIdent);
// // There is no loop since 'expr' is a single element. Traverse the for loop body directly
// type = (int)ProtoCore.PrimitiveType.kTypeVoid;
// if (null != forNode.body)
// {
// foreach (ImperativeNode bodyNode in forNode.body)
// {
// DfsTraverse(bodyNode, ref type);
// }
// }
//}
//else
//{
// 'expr' is an array
// Get the size of expr and assign it to the autogen iteration var
int symbol = ProtoCore.DSASM.Constants.kInvalidIndex;
if (ProtoCore.DSASM.Constants.kInvalidIndex != globalClassIndex)
{
symbol = compileState.ClassTable.ClassNodes[globalClassIndex].symbols.IndexOf(identName);
}
else
{
symbol = codeBlock.symbolTable.IndexOf(identName);
}
// Generate the comparison expression between the autogen counter and the autogen iteration count
BinaryExpressionNode iterCondition = new BinaryExpressionNode();
iterCondition.Optr = ProtoCore.DSASM.Operator.lt;
iterCondition.LeftNode = nodeCounter;
iterCondition.RightNode = nodeIterCount;
iterCondition.line = forNode.KwInLine;
iterCondition.col = forNode.KwInCol;
iterCondition.endLine = forNode.KwInLine;
iterCondition.endCol = forNode.KwInCol + 1;
// Generate the assignment statement from where lhs is ‘id’ and rhs is ‘expr’ indexed into the autogen count
BinaryExpressionNode IndexedExprToId = new BinaryExpressionNode();
IndexedExprToId.Optr = ProtoCore.DSASM.Operator.assign;
IndexedExprToId.LeftNode = forIdent;
// Array index into the expr ident
ArrayNode arrayIndex = new ArrayNode();
arrayIndex.Expr = nodeCounter;
arrayIndex.Type = null;
exprIdent.ArrayDimensions = arrayIndex;
IndexedExprToId.RightNode = exprIdent;
IndexedExprToId.line = forIdent.line;
IndexedExprToId.col = forIdent.col;
IndexedExprToId.endLine = forIdent.endLine;
IndexedExprToId.endCol = forIdent.endCol;
// Generate the expression for increment by 1 of the autogen count
BinaryExpressionNode countIncrement = new BinaryExpressionNode();
countIncrement.Optr = ProtoCore.DSASM.Operator.add;
countIncrement.LeftNode = nodeCounter;
countIncrement.RightNode = new IntNode() { value = "1" };
BinaryExpressionNode countIncrementAssign = new BinaryExpressionNode();
countIncrementAssign.Optr = ProtoCore.DSASM.Operator.assign;
countIncrementAssign.LeftNode = nodeCounter;
countIncrementAssign.RightNode = countIncrement;
// Append the array indexing and increment expressions into the for-loop body
forNode.body.Insert(0, IndexedExprToId);
forNode.body.Insert(1, countIncrementAssign);
// Construct and populate the equivalent while node
WhileStmtNode whileNode = new WhileStmtNode();
whileNode.Expr = iterCondition;
whileNode.Body = forNode.body;
whileNode.line = forNode.line;
whileNode.col = forNode.col;
whileNode.endLine = forNode.endLine;
whileNode.endCol = forNode.endCol;
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitWhileStmtNode(whileNode, ref type);
//}
// Comment Jun: The for loop counter must be unique and does not need to reset
//forloopCounter--; //for loop ended. decrement counter
}
}
private void EmitForLoopNode(ImperativeNode node, ref ProtoCore.Type inferredType, bool isBooleanOp = false, ProtoCore.AssociativeGraph.GraphNode graphNode = null)
{
if (core.IsParsingCodeBlockNode || core.IsParsingPreloadedAssembly)
{
return;
}
if (IsParsingGlobal() || IsParsingGlobalFunctionBody())
{
/*
x = 0;
a = {10,20,30,40}
for(val in a)
{
x = x + val;
}
Compiles down to:
x = 0;
a = {10,20,30,40};
val = null;
%forloop_key = a.key;
%forloop_expr = a;
while( %forloop_key != null)
{
val = %forloop_expr[%forloop_key];
%forloop_key = %forloop_key + 1;
x = x + val;
}
*/
DebugProperties.BreakpointOptions oldOptions = core.DebuggerProperties.breakOptions;
DebugProperties.BreakpointOptions newOptions = oldOptions;
newOptions |= DebugProperties.BreakpointOptions.EmitCallrForTempBreakpoint;
core.DebuggerProperties.breakOptions = newOptions;
// TODO Jun: This compilation unit has many opportunities for optimization
// 1. Compiling to while need not be necessary if 'expr' has exactly one element
// 2. For-loop can have its own semantics without the need to convert to a while node
ForLoopNode forNode = node as ForLoopNode;
++core.ForLoopBlockIndex; //new forloop beginning. increment loop counter
// Insert a dummy block for for-loop so that loopvar is in scope.
ProtoCore.DSASM.CodeBlock localCodeBlock = new ProtoCore.DSASM.CodeBlock(
context.guid,
ProtoCore.DSASM.CodeBlockType.kConstruct,
Language.kInvalid,
core.CodeBlockIndex++,
new ProtoCore.DSASM.SymbolTable(GetConstructBlockName("dummy"), core.RuntimeTableIndex++),
null,
true,
core);
core.CodeBlockIndex++;
localCodeBlock.instrStream = codeBlock.instrStream;
localCodeBlock.parent = codeBlock;
codeBlock.children.Add(localCodeBlock);
codeBlock = localCodeBlock;
EmitPushBlockID(localCodeBlock.codeBlockId);
ProtoCore.Type type = TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVoid, 0);
// val = null;
IdentifierNode loopvar = nodeBuilder.BuildIdentfier(forNode.loopVar.Name) as IdentifierNode;
{
loopvar.ArrayName = forNode.expression.Name;
ProtoCore.Utils.NodeUtils.CopyNodeLocation(loopvar, forNode.loopVar);
BinaryExpressionNode loopvarInit = new BinaryExpressionNode();
loopvarInit.Optr = ProtoCore.DSASM.Operator.assign;
loopvarInit.LeftNode = loopvar;
loopvarInit.RightNode = new NullNode();
ProtoCore.Utils.NodeUtils.CopyNodeLocation(loopvarInit, forNode);
loopvarInit.endLine = loopvarInit.line;
loopvarInit.endCol = loopvarInit.col + 3;
EmitBinaryExpressionNode(loopvarInit, ref type, isBooleanOp, graphNode);
}
// %key = null;
string keyIdent = GetForLoopKeyIdent();
Allocate(keyIdent, globalProcIndex, TypeSystem.BuildPrimitiveTypeObject(PrimitiveType.kTypeVoid, 0));
var key = nodeBuilder.BuildIdentfier(keyIdent);
// %array = complicated expr in for...in loop, so that we could
// index into it.
string identName = GetForExprIdent();
var arrayExpr = nodeBuilder.BuildIdentfier(identName);
NodeUtils.CopyNodeLocation(arrayExpr, forNode.expression);
BinaryExpressionNode arrayexprAssignment = new BinaryExpressionNode();
arrayexprAssignment.Optr = ProtoCore.DSASM.Operator.assign;
arrayexprAssignment.LeftNode = arrayExpr;
arrayexprAssignment.RightNode = forNode.expression;
NodeUtils.UpdateBinaryExpressionLocation(arrayexprAssignment);
switch (forNode.expression.GetType().ToString())
{
case "ProtoCore.AST.ImperativeAST.IdentifierNode":
case "ProtoCore.AST.ImperativeAST.ExprListNode":
newOptions |= DebugProperties.BreakpointOptions.EmitPopForTempBreakpoint;
core.DebuggerProperties.breakOptions = newOptions;
break;
}
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitBinaryExpressionNode(arrayexprAssignment, ref type, isBooleanOp, graphNode);
core.DebuggerProperties.breakOptions = oldOptions; // Restore breakpoint behaviors.
// Get the size of expr and assign it to the autogen iteration var
int symbolIndex = Constants.kInvalidIndex;
SymbolNode symbol = null;
if (ProtoCore.DSASM.Constants.kInvalidIndex != globalClassIndex && !IsInLanguageBlockDefinedInFunction())
{
symbolIndex = core.ClassTable.ClassNodes[globalClassIndex].symbols.IndexOf(identName);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = core.ClassTable.ClassNodes[globalClassIndex].symbols.symbolList[symbolIndex];
}
}
else
{
symbolIndex = codeBlock.symbolTable.IndexOf(identName);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = codeBlock.symbolTable.symbolList[symbolIndex];
}
}
EmitInstrConsole(ProtoCore.DSASM.kw.pushvarsize, identName);
EmitPushArrayKey(symbolIndex, codeBlock.symbolTable.RuntimeIndex, (symbol == null) ? globalClassIndex : symbol.classScope);
// Push the identifier local block information
// Push the array dimensions
int dimensions = 0;
EmitPushVarData(dimensions);
if (ProtoCore.DSASM.Constants.kInvalidIndex != globalClassIndex && !IsInLanguageBlockDefinedInFunction())
{
symbolIndex = core.ClassTable.ClassNodes[globalClassIndex].symbols.IndexOf(keyIdent);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = core.ClassTable.ClassNodes[globalClassIndex].symbols.symbolList[symbolIndex];
}
}
else
{
symbolIndex = codeBlock.symbolTable.IndexOf(keyIdent);
if (symbolIndex != Constants.kInvalidIndex)
{
symbol = codeBlock.symbolTable.symbolList[symbolIndex];
}
}
StackValue opDest = StackValue.BuildVarIndex(symbolIndex);
EmitInstrConsole(ProtoCore.DSASM.kw.pop, keyIdent);
EmitPop(opDest, (symbol == null) ? globalClassIndex : symbol.classScope, symbol.runtimeTableIndex);
// key == null ?
BinaryExpressionNode condition = new BinaryExpressionNode();
{
condition.Optr = ProtoCore.DSASM.Operator.nq;
condition.LeftNode = key;
condition.RightNode = new NullNode();
condition.line = forNode.KwInLine;
condition.col = forNode.KwInCol;
condition.endLine = forNode.KwInLine;
condition.endCol = forNode.KwInCol + 2; // 2 character for keyword "in".
}
// val = array[key];
BinaryExpressionNode arrayIndexing = new BinaryExpressionNode();
{
arrayIndexing.Optr = ProtoCore.DSASM.Operator.assign;
arrayIndexing.LeftNode = loopvar;
// Array index into the expr ident
ArrayNode arrayIndex = new ArrayNode();
arrayIndex.Expr = key;
arrayIndex.Type = null;
(arrayExpr as IdentifierNode).ArrayDimensions = arrayIndex;
arrayIndexing.RightNode = arrayExpr;
arrayIndexing.line = loopvar.line;
arrayIndexing.col = loopvar.col;
arrayIndexing.endLine = loopvar.endLine;
arrayIndexing.endCol = loopvar.endCol;
}
// key = key + 1;
BinaryExpressionNode nextKey = new BinaryExpressionNode();
{
nextKey.LeftNode = key;
nextKey.Optr = Operator.assign;
nextKey.RightNode = nodeBuilder.BuildBinaryExpression(key,
new IntNode(1),
Operator.add);
}
// Append the array indexing and key increment expressions into
// the for-loop body
forNode.body.Insert(0, arrayIndexing);
forNode.body.Insert(1, nextKey);
// Construct and populate the equivalent while node
WhileStmtNode whileStatement = new WhileStmtNode();
whileStatement.Expr = condition;
whileStatement.Body = forNode.body;
whileStatement.endLine = node.endLine;
whileStatement.endCol = node.endCol;
type.UID = (int)ProtoCore.PrimitiveType.kTypeVoid;
EmitWhileStmtNode(whileStatement, ref type, isBooleanOp, graphNode);
// As we add a dummy code block around forloop node, RETCN
// instruction will get debugging information from
// localCodeBlockNode, which is forloop node. We temporarily set
// lcoalCodeBlockNode to a dummy node so that RETCN won't have
// debugging information.
var dummyCodeBlockNode = new CodeBlockNode();
var backUpLocalCodeBlockNode = localCodeBlockNode;
localCodeBlockNode = dummyCodeBlockNode;
EmitInstrConsole(ProtoCore.DSASM.kw.retcn);
EmitRetcn(localCodeBlock.codeBlockId);
codeBlock = localCodeBlock.parent;
localCodeBlockNode = backUpLocalCodeBlockNode;
//}
// Comment Jun: The for loop counter must be unique and does not need to reset
//forloopCounter--; //for loop ended. decrement counter
}
}
public ArrayNameNode()
{
ArrayDimensions = null;
}
public ArrayNameNode()
{
ArrayDimensions = null;
}