/// <summary>
/// 遍历Ast树，生成四元式列表
/// </summary>
/// <param name="ast">Ast树</param>
/// <param name="varTable">变量表</param>
/// <returns></returns>
public static List <FourExp> Translate(Ast ast, VarTable varTable)
{
List <FourExp> fourExpList = new List <FourExp>();
LabelStack labelStack = new LabelStack();
foreach (Statement s in ast.Statements)
{
s.Translate(varTable, labelStack, fourExpList);
}
return(fourExpList);
}
public CCompiler(TokenList <Token> tokenList)
{
_tokenList = tokenList;
_compileCommands = new TokenList <object[]>();
_symbolTable = new SymbolTable();
// Label stacks
_endIfLabels = new LabelStack("ENDIF_");
_elseLabels = new LabelStack("ELSE_");
_beginWhileLabels = new LabelStack("BEGINWHILE_");
_endWhileLabels = new LabelStack("ENDWHILE_");
}