private void PutVariableIfInBlock(VariableNameTableItem res)
{
if (inProgramBlock || currentRoutine != null)
{
scope.PutVariable(res);
}
}
private void TranslateDeclareHead(VariableNameTableItem item, IndentedTextWriter writer)
{
// module var
if (item.IsConstant)
{
writer.Write("const ");
}
writer.Write($"{GetStringFromType(item.Type)} {item.Name}");
}
public override object VisitConstDecl([NotNull] SLangGrammarParser.ConstDeclContext context)
{
var type = Visit(context.scalarType()) as SlangType;
var nameToken = context.Id().Symbol;
var item = new VariableNameTableItem {
Type = type, IsConstant = false, Column = nameToken.Column, Line = nameToken.Line, Name = nameToken.Text
};
PutVariableIfInBlock(item);
TranslateDeclare(item, context.exp());
return(null);
}
private void TranslateDeclare(VariableNameTableItem item, SLangGrammarParser.ExpContext expContext)
{
if (!inProgramBlock && currentRoutine == null)
{
TranslateDeclareHead(item, headerText);
}
TranslateDeclareHead(item, cppText);
if (expContext != null)
{
cppText.Write(" = ");
Visit(expContext);
}
}
public override object VisitArrayDecl([NotNull] SLangGrammarParser.ArrayDeclContext context)
{
var type = Visit(context.arrayDeclType()) as SlangType;
var nameToken = context.Id().Symbol;
var res = new VariableNameTableItem {
Type = type, IsConstant = false, Column = nameToken.Column, Line = nameToken.Line, Name = nameToken.Text
};
if (!inProgramBlock && currentRoutine == null)
{
TranslateDeclareHead(res, headerText);
}
TranslateDeclareHead(res, cppText);
// write constructor
var exps = context.arrayDeclType().exp();
int dimensionCount = exps.Length;
int n = dimensionCount - 1;
foreach (var exp in context.arrayDeclType().exp())
{
cppText.Write("(");
Visit(exp);
if (n > 0)
{
cppText.Write(", ");
cppText.Write(GetVectorTypeStart(n));
var arrType = Visit(context.arrayDeclType().scalarType()) as SlangType;
cppText.Write(GetStringFromType(arrType));
cppText.Write(GetVectorTypeEnd(n));
}
n--;
}
for (int i = 0; i < exps.Length; ++i)
{
cppText.Write(")");
}
PutVariableIfInBlock(res);
return(null);
}
// declares
public override object VisitSimpleDecl([NotNull] SLangGrammarParser.SimpleDeclContext context)
{
SlangType type;
if (context.simpleType() != null)
{
type = Visit(context.simpleType()) as SlangType;
}
else
{
type = Visit(context.customType()) as SlangType;
}
var nameToken = context.Id().Symbol;
var res = new VariableNameTableItem {
Type = type, IsConstant = false, Column = nameToken.Column, Line = nameToken.Line, Name = nameToken.Text
};
PutVariableIfInBlock(res);
TranslateDeclare(res, context.exp());
return(null);
}
private void TranslateClassFieldDecl(VariableNameTableItem field)
{
headerText.WriteLine($"{GetStringFromType(field.Type)} {field.Name};");
}
public static void ThrowFieldOfClassTypeException(FileInfo file, VariableNameTableItem item) => ThrowException($"Invalid use of variable with type {item.Type} in class {item.Type}, only pointers allowed", file, item.Line, item.Column);
