2004-01-16 Cesar Lopez Nataren <cesar@ciencias.unam.mx>

2004-01-16  Cesar Lopez Nataren  <cesar@ciencias.unam.mx>

	* IdentificationTable.cs, ScriptBlock.cs: deleted debugging messages.
	* jscript-lexer-parser.g: deleted debugging messages. Create a
	Assign object instance of a simple Binary obj. Same case for Equality.

	* expression.cs: added Exp abstract class. Classes that are ast of
	language constructions that can appear as global expressions that
	get evaluated and then the result is discarded inherit from this
	new class. This let meee keep track of things that must get Popped
	or can even avoid the evaluation of it. Wrote real Resolve method
	for classes: Unary, Binary.
	Implemted Emit method for some binary operations (+, -, / and *),
	for other operators some more code is still missing.
	Identifier: handle assignment cases and global exp cases.
	Added class Assign (compisite assignment still missing tough :-(

	* driver.cs: deleted debug messages, added "Compilation Succeeded"
	message ;-).
	* VariableStatement.cs, VariableDeclaration.cs: wrote real Resolve method.
	* Literal.cs (BooleanLiteral, NumericLiteral): now inherits from
	Exp and handle the case for global expressions that must be popped
	after evaluation. no more invalid IL being generated! yeah!
	* Block.cs: wrote real Resolve method, erased debug messages.
	* BitwiseBinary.cs, InstanceOf.cs, UnaryOp.cs: : add new Resolve inherited from Exp.
	* BinaryOp.cs, Conditional: now inherits from Exp.

svn path=/trunk/mcs/; revision=22151