/// <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 Compiler(string sourcepath, string outputpath)
{
this.sourcepath = sourcepath;
this.outputpath = outputpath;
sourceList = new List<string>();
codelist = new List<Instruction>();
addresstable = new Hashtable();
labeltable = new Hashtable();
tokenList = new List<Token>();
ast = new Ast();
}
public static bool DoParse(List<Token> tokenlist, Ast _ast, out CompilerErrorInfo error)
{
ast = _ast;
error = null;
i = 0;
tokenList = tokenlist;
while (i < tokenList.Count)
{
GenStatement(ast.Statements);
}
return true;
}