// WhileStatementNoShortIf ::= 'while' '(' Expression ')' StatementNoShortIf
this.expressionLengthPtr--;
Statement statement = (Statement) this.astStack[this.astPtr];
this.astStack[this.astPtr] =
new WhileStatement(
this.expressionStack[this.expressionPtr--],
statement,
this.intStack[this.intPtr--],
this.endStatementPosition);
}