//-----------------------------------------------------------------------------
// Makes a factor :: { <expression> } | <identifier>.
//-----------------------------------------------------------------------------
static void MakeFactor( ExprTree& tree )
{
if ( mCurToken == '(' )
{
// Get the next token
GetNextToken();
// Make an expression, setting Tree to point to it
MakeExpression( tree );
}
else if ( IsIdentifier( mCurToken ) )
{
// Make a literal node, set Tree to point to it, set left/right children to NULL.
MakeExprNode( tree, mCurToken, LITERAL, NULL, NULL );
}
else if ( IsNotOp( mCurToken ) )
{
// do nothing
return;
}
else
{
// This must be a bad token
VPC_SyntaxError( "Bad expression token: %c", mCurToken );
}
// Get the next token
GetNextToken();
}
// <bool_expression> ::= [<not_op>] <bool_factor>
void NotFactor(CPU *cpu, Files file){
bool negate = false;
if(IsNotOp(file)){
Match('!', file);
negate = true;
}
Factor(cpu, file);
// cpu->Negate();
}
//-----------------------------------------------------------------------------
// Makes a term :: <factor> { <not> }.
//-----------------------------------------------------------------------------
static void MakeTerm( ExprTree& tree )
{
// Make a factor, setting Tree to point to it
MakeFactor( tree );
// while the next token is !
while( IsNotOp( mCurToken ) )
{
// Make an operator node, setting left child to Tree and right to NULL. (Tree points to new node)
MakeExprNode( tree, mCurToken, NOT, tree, NULL );
// Get the next token.
GetNextToken();
// Make a factor, setting the right child of Tree to point to it.
MakeFactor(tree->right);
}
}