public override bool Visit(AstIdArrayExpression node)
{
ErrorIfIsNull(node.Index);
return true;
}
// #TYPE_DEFINITION INT LEFT_BRACKET INTEGER_VALUE_LIST RIGHT_BRACKET
private void ConstructIntArrayTypeDefinition()
{
List<AstIntegerValueExpression> dimensions = new List<AstIntegerValueExpression>();
AstIntegerValueExpression intVal;
do
{
intVal = nodes.Pop() as AstIntegerValueExpression;
dimensions.Add(intVal);
}
while((nodes.Peek() as AstIntegerValueExpression) != null);
AstIntegerListExpression expr = new AstIntegerListExpression(dimensions.ToArray());
var typeDef = new AstIdArrayExpression(BuiltInTypes.INT, expr);
PushNode(typeDef);
}
public override bool Visit(AstIdArrayExpression node)
{
return true;
}
// #ASSIGN_STATEMENT ID #ARRAY ASSIGNMENT #EXPRESSION
private void ConstructAssignArrayStatement()
{
var newValue = nodes.Pop() as AstExpression;
List<AstArrayIndex> indices = new List<AstArrayIndex>();
while (nodes.Peek() is AstArrayIndex)
{
indices.Insert(0, nodes.Pop() as AstArrayIndex);
}
AstExpressionList index = new AstExpressionList(indices.ToArray());
var id = nodes.Pop() as AstIdExpression;
var idArrExpression = new AstIdArrayExpression(id.Id, index);
idArrExpression.SetTextPosition( tokenCurrPosition );
var node = new AstAssignStatement(idArrExpression, newValue);
PushNode(node);
}
// #SIMPLE_TERM ID #ARRAY
private void ConstructArrayUseSimpleTerm()
{
var indices = new List<AstArrayIndex>();
var curr = nodes.Peek() as AstNode;
while (curr is AstArrayIndex)
{
nodes.Pop();
indices.Insert(0, curr as AstArrayIndex);
curr = nodes.Peek() as AstNode;
}
var index = new AstExpressionList(indices.ToArray());
var id = nodes.Pop() as AstIdExpression;
var idArr = new AstIdArrayExpression(id.Id, index);
idArr.SetTextPosition( tokenCurrPosition );
var node = new AstSimpleTermExpr(idArr);
PushNode(node);
}
public override bool Visit(AstIdArrayExpression node)
{
node.Index.Accept(this);
StringBuilder arrIndex = new StringBuilder();
foreach (string s in m_lastIndex)
arrIndex.AppendFormat(", {0} ", s);
var tableSymbol = table.Lookup(node.Id);
codeStream.WriteLine(CreateUnnamedVariable() + " = getelementptr " + GetArrayId(tableSymbol.Size as int[]) +
"* @" + node.Id +
" , i32 0 " + arrIndex);
if (!arrAssign)
{
codeStream.WriteLine(CreateUnnamedVariable() + " = getelementptr " + GetArrayId(tableSymbol.Size as int[]) +
"* @" + node.Id +
" , i32 0 " + arrIndex);
string strLoad = " = load i32* " + GetCurrUnnamedVariable();
codeStream.WriteLine(CreateUnnamedVariable() + strLoad);
SaveArg("i32 " + GetCurrUnnamedVariable());
}
return false;
}
public override bool Visit(AstIdArrayExpression node)
{
var intValSize = node.Index as AstIntegerListExpression;
if (intValSize != null)
{
try
{
var size = intValSize.GetSize().Aggregate((s, t) => s * t);
if (size > BuiltInTypes.MAX_ARRAY_SIZE)
{
DispatchError(intValSize.TextPosition, "Max arrays size is " + BuiltInTypes.MAX_ARRAY_SIZE);
return false;
}
if (size < 1)
{
DispatchError(intValSize.TextPosition, "Invalid array size");
return false;
}
}
catch (OverflowException)
{
DispatchError(intValSize.TextPosition, "Max arrays size is " + BuiltInTypes.MAX_ARRAY_SIZE);
return false;
}
}
var indexType = resolver.Resolve(node.Index);
if (indexType != BuiltInTypes.INT)
{
DispatchError(node.Index.TextPosition, "Only integer values available for array index");
}
if(node.Index is AstExpressionList)
{
var expr = node.Index as AstExpressionList;
foreach (var item in expr.Expr)
if (!CheckIsNotNegative(item))
return false;
}
else if(node.Index is AstIntegerListExpression)
{
var expr = node.Index as AstIntegerListExpression;
foreach (var item in expr.Expr)
if (!CheckIsNotNegative(item))
return false;
}
var sym = table.Lookup(node.Id);
if (sym != null)
{
sym.Used = true;
if (!Symbol.IsArray(sym))
{
DispatchError(node.TextPosition, "Is not array");
return false;
}
int[] size = table.Lookup(node.Id).Size as int[];
AstListExpression indices = null;
if (node.Index is AstIntegerListExpression)
indices = node.Index as AstIntegerListExpression;
else if (node.Index is AstExpressionList)
indices = node.Index as AstExpressionList;
if (indices.Length != size.Length)
{
DispatchError(node.TextPosition, "Wrong number of indices");
return false;
}
for (int i = 0; i < size.Length; i++)
CheckIndexInRange(size[i] - 1, indices[i]);
}
else if (!isClassFieldDef)
{
DispatchError(node.TextPosition, "Unknown identifier " + node.Id);
return true;
}
return true;
}
public abstract bool Visit(AstIdArrayExpression node);
