public void BindField(FieldInfo field, HotloaderClass cls)
{
string name = field.Name;
HotloaderVariable v = cls.GetVariable(name);
if (v == null)
{
v = new HotloaderVariable(name, this);
if (!cls.AddVariable(v))
{
throw new Exception(
String.Format(
"Cannot bind field. Name \"{0}\" already in use.",
name));
}
}
BindField(field, v);
}
private void handleBlock(
List <HotloaderVariable> variables,
HotloaderFile file,
byte *blockPtr, byte *blockEnd,
int currentLine, int currentColumn,
ref bool negativeFlag,
ref parserMode mode,
ref HotloaderAccessor currentAccessor,
ref HotloaderVariable currentVariable,
ref HotloaderExpression currentExpression,
ref HotloaderClass currentClass)
{
//read the block as a string
string block = readString(blockPtr, blockEnd);
//hash the string so we can do quick compares with keywords
int hash = block.GetHashCode();
#region include
if (hash == STRING_INCLUDE_HASH)
{
//valid?
if (mode != parserMode.NONE)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
"Unexpected include");
}
mode = parserMode.INCLUDE;
return;
}
#endregion
#region reserve word check
/*since we detect errors if some keywords
* are used anyway, some are discarded here.*/
if (mode != parserMode.ASSIGNMENT)
{
if (hash == STRING_TRUE_HASH ||
hash == STRING_FALSE_HASH)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
String.Format(
"Unexpected use of symbol \"{0}\"",
block));
}
}
#endregion
#region accessors
bool isConst = hash == STRING_CONST_HASH;
bool isStatic = hash == STRING_STATIC_HASH;
//valid mode?
if (mode != parserMode.NONE)
{
if (isConst || isStatic)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
"Unexpected accessor");
}
}
if (isConst)
{
currentAccessor |= HotloaderAccessor.CONST;
}
if (isStatic)
{
currentAccessor |= HotloaderAccessor.STATIC;
}
if (isConst || isStatic)
{
return;
}
#endregion
#region end of a class?
if (hash == STRING_END_HASH)
{
//verify that we can end a class
if (currentClass.Parent == null ||
mode != parserMode.NONE)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
"Unexpected end of class token.");
}
//end the class by just setting
//the current class to the parent
currentClass = currentClass.Parent;
return;
}
#endregion
#region class declaration
//are we expecting a class name?
if (mode == parserMode.CLASS)
{
//a class cannot have accessors!
if (currentAccessor != HotloaderAccessor.NONE)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
"Classes cannot have accessors");
}
//get the class
HotloaderClass cls = currentClass.GetClass(block);
if (cls == null)
{
cls = new HotloaderClass(block, this);
//only reason this will return false is
//if it already exists!
if (!currentClass.AddClass(cls))
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
String.Format(
"Cannot declare class \"{0}\". Name already used elsewhere.",
block));
}
}
//set the current class to the newly created one
//so every variable/class added will be added
//to this one.
currentClass = cls;
//we are no longer reading a class
mode = parserMode.NONE;
return;
}
#endregion
#region variable declaration
//we must be in assignment mode by now..
if (mode == parserMode.VARIABLE)
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
"Unexpected variable declaration");
}
//we assume this is an alpha-numerical string
if (mode == parserMode.NONE)
{
//does this variable already exist?
//if not, add it.
currentVariable = currentClass.GetVariable(block);
if (currentVariable == null)
{
//if the add function returns false, then
//the variable name is already taken!
currentVariable = new HotloaderVariable(block, this);
if (!currentClass.AddVariable(currentVariable))
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
String.Format(
"Cannot declare variable \"{0}\". Name already used elsewhere.",
block));
}
}
//add to the list of added variables from the file
variables.Add(currentVariable);
//if we can't change this variable (it's marked as static
//just set the current variable to a dummy one.
if ((currentVariable.Accessors & HotloaderAccessor.STATIC) == HotloaderAccessor.STATIC)
{
currentVariable = new HotloaderVariable("dummy", this);
currentVariable.changeParent(currentClass);
}
//set expression
currentExpression = currentVariable.Value;
currentExpression.Clear();
//set accessors
currentVariable.Accessors = currentAccessor;
currentAccessor = HotloaderAccessor.NONE;
//wait for assignment etc..
mode = parserMode.VARIABLE;
}
#endregion
#region variable assignment
if (mode == parserMode.ASSIGNMENT)
{
#region boolean
string blockLower = block.ToLower();
if (blockLower == "true" ||
blockLower == "false")
{
currentExpression.AddOperand(
(block == "true"),
HotloaderValueType.BOOLEAN,
currentLine,
currentColumn,
file);
return;
}
#endregion
#region numerical?
double decimalValue;
bool isDecimal = Double.TryParse(block, out decimalValue);
if (isDecimal)
{
//is it an actual decimal or integer?
bool explicitDecimal = block.Contains(".");
//negate?
if (negativeFlag)
{
decimalValue = -decimalValue;
negativeFlag = false;
}
//deturmine value type
HotloaderValueType type =
explicitDecimal ?
HotloaderValueType.DECIMAL :
HotloaderValueType.NUMERICAL;
//deturmine raw object for the string
object raw = decimalValue;
if (!explicitDecimal)
{
raw = (long)decimalValue;
}
currentExpression.AddOperand(
raw,
type,
currentLine,
currentColumn,
file);
return;
}
#endregion
#region base conversion
if (block.Length > 2 &&
*blockPtr == '0')
{
//detect base conversion
int sourceBase = -1;
byte sourceBaseByte = *(blockPtr + 1);
if (sourceBaseByte == 'x')
{
sourceBase = 16;
}
else if (sourceBaseByte == 'b')
{
sourceBase = 2;
}
//is it actually a conversion?
if (sourceBase != -1)
{
string convert = block.Substring(2);
//attempt to convert
try {
long converted = Convert.ToInt64(convert, sourceBase);
//add the operand
currentExpression.AddOperand(
converted,
HotloaderValueType.NUMERICAL,
currentLine,
currentColumn,
file);
}
catch {
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
String.Format(
"Unable to convert {0} from base {1}",
convert,
sourceBase));
}
return;
}
}
#endregion
#region variable?
//verify the name
while (blockPtr != blockEnd)
{
byte current = *(blockPtr++);
if (!isNameCharacter(current))
{
throw new HotloaderParserException(
file,
currentLine,
currentColumn,
String.Format(
"Invalid variable name \"{0}\"",
block));
}
}
//default to a variable reference
currentExpression.AddOperand(
block,
HotloaderValueType.VARIABLE,
currentLine,
currentColumn,
file);
#endregion
}
#endregion
}
