public TemplateFrameAttributeViewModel(EvalTemplateEvent @event, HashSet<string> hiddenAttributes)
{
if (@event == null)
throw new ArgumentNullException("event");
this._event = @event;
Template template = _event.Frame.Template;
IDictionary<string, object> attributes = template.GetAttributes();
if (attributes != null)
{
List<AttributeViewModel> attributesList = new List<AttributeViewModel>();
foreach (var attribute in attributes)
{
bool hidden = !hiddenAttributes.Add(attribute.Key);
attributesList.Add(new AttributeViewModel(attribute.Key, attribute.Value, hidden, GetAttributeEvents(template, attribute.Key)));
}
_attributes = attributesList.AsReadOnly();
}
}
protected virtual int ExecuteImpl(ITemplateWriter @out, TemplateFrame frame)
{
Template self = frame.Template;
int start = @out.Index; // track char we're about to Write
Bytecode prevOpcode = Bytecode.Invalid;
int n = 0; // how many char we Write out
int nargs;
int nameIndex;
int addr;
string name;
object o, left, right;
Template st;
object[] options;
byte[] code = self.impl.instrs; // which code block are we executing
int ip = 0;
while (ip < self.impl.codeSize)
{
if (trace || _debug)
Trace(frame, ip);
Bytecode opcode = (Bytecode)code[ip];
frame.InstructionPointer = ip;
ip++; //jump to next instruction or first byte of operand
switch (opcode)
{
case Bytecode.INSTR_LOAD_STR:
int strIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
operands[++sp] = self.impl.strings[strIndex];
break;
case Bytecode.INSTR_LOAD_ATTR:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
try
{
o = GetAttribute(frame, name);
if (o == Template.EmptyAttribute)
o = null;
}
catch (AttributeNotFoundException)
{
_errorManager.RuntimeError(frame, ErrorType.NO_SUCH_ATTRIBUTE, name);
o = null;
}
operands[++sp] = o;
break;
case Bytecode.INSTR_LOAD_LOCAL:
int valueIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
o = self.locals[valueIndex];
if (o == Template.EmptyAttribute)
o = null;
operands[++sp] = o;
break;
case Bytecode.INSTR_LOAD_PROP:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
o = operands[sp--];
name = self.impl.strings[nameIndex];
operands[++sp] = GetObjectProperty(frame, o, name);
break;
case Bytecode.INSTR_LOAD_PROP_IND:
object propName = operands[sp--];
o = operands[sp];
operands[sp] = GetObjectProperty(frame, o, propName);
break;
case Bytecode.INSTR_NEW:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
nargs = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
// look up in original hierarchy not enclosing template (variable group)
// see TestSubtemplates.testEvalSTFromAnotherGroup()
st = self.Group.GetEmbeddedInstanceOf(frame, name);
// get n args and store into st's attr list
StoreArguments(frame, nargs, st);
sp -= nargs;
operands[++sp] = st;
break;
case Bytecode.INSTR_NEW_IND:
nargs = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = (string)operands[sp - nargs];
st = self.Group.GetEmbeddedInstanceOf(frame, name);
StoreArguments(frame, nargs, st);
sp -= nargs;
sp--; // pop template name
operands[++sp] = st;
break;
case Bytecode.INSTR_NEW_BOX_ARGS:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
IDictionary<string, object> attrs = (IDictionary<string, object>)operands[sp--];
// look up in original hierarchy not enclosing template (variable group)
// see TestSubtemplates.testEvalSTFromAnotherGroup()
st = self.Group.GetEmbeddedInstanceOf(frame, name);
// get n args and store into st's attr list
StoreArguments(frame, attrs, st);
operands[++sp] = st;
break;
case Bytecode.INSTR_SUPER_NEW:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
nargs = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
SuperNew(frame, name, nargs);
break;
case Bytecode.INSTR_SUPER_NEW_BOX_ARGS:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
attrs = (IDictionary<string, object>)operands[sp--];
SuperNew(frame, name, attrs);
break;
case Bytecode.INSTR_STORE_OPTION:
int optionIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
o = operands[sp--]; // value to store
options = (object[])operands[sp]; // get options
options[optionIndex] = o; // store value into options on stack
break;
case Bytecode.INSTR_STORE_ARG:
nameIndex = GetShort(code, ip);
name = self.impl.strings[nameIndex];
ip += Instruction.OperandSizeInBytes;
o = operands[sp--];
attrs = (IDictionary<string, object>)operands[sp];
attrs[name] = o; // leave attrs on stack
break;
case Bytecode.INSTR_WRITE:
o = operands[sp--];
int n1 = WriteObjectNoOptions(@out, frame, o);
n += n1;
nwline += n1;
break;
case Bytecode.INSTR_WRITE_OPT:
options = (object[])operands[sp--]; // get options
o = operands[sp--]; // get option to Write
int n2 = WriteObjectWithOptions(@out, frame, o, options);
n += n2;
nwline += n2;
break;
case Bytecode.INSTR_MAP:
st = (Template)operands[sp--]; // get prototype off stack
o = operands[sp--]; // get object to map prototype across
Map(frame, o, st);
break;
case Bytecode.INSTR_ROT_MAP:
int nmaps = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
List<Template> templates = new List<Template>();
for (int i = nmaps - 1; i >= 0; i--)
templates.Add((Template)operands[sp - i]);
sp -= nmaps;
o = operands[sp--];
if (o != null)
RotateMap(frame, o, templates);
break;
case Bytecode.INSTR_ZIP_MAP:
st = (Template)operands[sp--];
nmaps = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
List<object> exprs = new List<object>();
for (int i = nmaps - 1; i >= 0; i--)
exprs.Add(operands[sp - i]);
sp -= nmaps;
operands[++sp] = ZipMap(frame, exprs, st);
break;
case Bytecode.INSTR_BR:
ip = GetShort(code, ip);
break;
case Bytecode.INSTR_BRF:
addr = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
o = operands[sp--]; // <if(expr)>...<endif>
if (!TestAttributeTrue(o))
ip = addr; // jump
break;
case Bytecode.INSTR_OPTIONS:
operands[++sp] = new object[Compiler.TemplateCompiler.NUM_OPTIONS];
break;
case Bytecode.INSTR_ARGS:
operands[++sp] = new Dictionary<string, object>();
break;
case Bytecode.INSTR_PASSTHRU:
nameIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
name = self.impl.strings[nameIndex];
attrs = (IDictionary<string, object>)operands[sp];
PassThrough(frame, name, attrs);
break;
case Bytecode.INSTR_LIST:
operands[++sp] = new List<object>();
break;
case Bytecode.INSTR_ADD:
o = operands[sp--]; // pop value
List<object> list = (List<object>)operands[sp]; // don't pop list
AddToList(list, frame, o);
break;
case Bytecode.INSTR_TOSTR:
// replace with string value; early eval
operands[sp] = ToString(frame, operands[sp]);
break;
case Bytecode.INSTR_FIRST:
operands[sp] = First(frame, operands[sp]);
break;
case Bytecode.INSTR_LAST:
operands[sp] = Last(frame, operands[sp]);
break;
case Bytecode.INSTR_REST:
operands[sp] = Rest(frame, operands[sp]);
break;
case Bytecode.INSTR_TRUNC:
operands[sp] = Trunc(frame, operands[sp]);
break;
case Bytecode.INSTR_STRIP:
operands[sp] = Strip(frame, operands[sp]);
break;
case Bytecode.INSTR_TRIM:
o = operands[sp--];
if (o.GetType() == typeof(string))
{
operands[++sp] = ((string)o).Trim();
}
else
{
_errorManager.RuntimeError(frame, ErrorType.EXPECTING_STRING, "trim", o.GetType());
operands[++sp] = o;
}
break;
case Bytecode.INSTR_LENGTH:
operands[sp] = Length(operands[sp]);
break;
case Bytecode.INSTR_STRLEN:
o = operands[sp--];
if (o.GetType() == typeof(string))
{
operands[++sp] = ((string)o).Length;
}
else
{
_errorManager.RuntimeError(frame, ErrorType.EXPECTING_STRING, "strlen", o.GetType());
operands[++sp] = 0;
}
break;
case Bytecode.INSTR_REVERSE:
operands[sp] = Reverse(frame, operands[sp]);
break;
case Bytecode.INSTR_NOT:
operands[sp] = !TestAttributeTrue(operands[sp]);
break;
case Bytecode.INSTR_OR:
right = operands[sp--];
left = operands[sp--];
operands[++sp] = TestAttributeTrue(left) || TestAttributeTrue(right);
break;
case Bytecode.INSTR_AND:
right = operands[sp--];
left = operands[sp--];
operands[++sp] = TestAttributeTrue(left) && TestAttributeTrue(right);
break;
case Bytecode.INSTR_INDENT:
strIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
Indent(@out, frame, strIndex);
break;
case Bytecode.INSTR_DEDENT:
@out.PopIndentation();
break;
case Bytecode.INSTR_NEWLINE:
try
{
if (prevOpcode == Bytecode.INSTR_NEWLINE ||
prevOpcode == Bytecode.INSTR_INDENT ||
nwline > 0)
{
@out.Write(Environment.NewLine);
}
nwline = 0;
}
catch (IOException ioe)
{
_errorManager.IOError(self, ErrorType.WRITE_IO_ERROR, ioe);
}
break;
case Bytecode.INSTR_NOOP:
break;
case Bytecode.INSTR_POP:
sp--; // throw away top of stack
break;
case Bytecode.INSTR_NULL:
operands[++sp] = null;
break;
case Bytecode.INSTR_TRUE:
operands[++sp] = true;
break;
case Bytecode.INSTR_FALSE:
operands[++sp] = false;
break;
case Bytecode.INSTR_WRITE_STR:
strIndex = GetShort(code, ip);
ip += Instruction.OperandSizeInBytes;
o = self.impl.strings[strIndex];
n1 = WriteObjectNoOptions(@out, frame, o);
n += n1;
nwline += n1;
break;
// TODO: generate this optimization
//case Bytecode.INSTR_WRITE_LOCAL:
// valueIndex = GetShort(code, ip);
// ip += Instruction.OperandSizeInBytes;
// o = self.locals[valueIndex];
// if (o == Template.EmptyAttribute)
// o = null;
// n1 = WriteObjectNoOptions(@out, frame, o);
// n += n1;
// nwline += n1;
// break;
default:
_errorManager.InternalError(self, "invalid bytecode @ " + (ip - 1) + ": " + opcode, null);
self.impl.Dump();
break;
}
prevOpcode = opcode;
}
if (_debug)
{
EvalTemplateEvent e = new EvalTemplateEvent(frame, Interval.FromBounds(start, @out.Index));
TrackDebugEvent(frame, e);
}
return n;
}
private int GetIndexOfChild(EvalTemplateEvent parent, EvalTemplateEvent child)
{
if (parent == null)
throw new ArgumentNullException("parent");
if (child == null)
throw new ArgumentNullException("child");
TemplateCallHierarchyViewModel hierarchy = new TemplateCallHierarchyViewModel(ViewModel.Visualizer.Interpreter, parent);
List<TemplateCallHierarchyViewModel> children = hierarchy.Children;
return children.FindIndex(i => i.Event == child);
}
