使用宏变量名调用宏

Question

在 SAS 中是否可以使用值为宏名称的宏变量来调用对宏的调用？类似于以下内容：

%MACRO TEST (macroName, var1, var2, var3, var4, var5);

    %put LOG: %&macroName(&var1);

%MEND;
%TEST(testName,testVar1);

回应理查德的回答。我尝试按照您的解决方案进行操作，但仍然使用以下代码获得 "apparent invocation of macro YearMonthString not resolved"：

%MACRO YearMonthString(nYear,nMonth);
/* Builds a string in the format YYYYMM using passed nYear and nMonth */

    %local returnVal;

    /*Build the string */
    %let returnVal = &nYear.%AddLeadingZerosToMakeNumXLength(2,&nMonth);

    /*Write to LOG */
    %put MACRO LOG: YearMonthString(nYear= &nYear, nMonth= &nMonth) will return &returnVal;

    /* return returnVal */
    &returnVal

%MEND;
%MACRO TEST (macroName, var1, var2, var3, var4, var5);

    %local loopCount;   

    %let loopCount = 1;

    %do i=1 %to 13;
        %&macroName.(&var1,&loopCount);
        %let loopCount = %eval(&loopCount+1);
    %end;

%MEND;
%TEST(YearMonthString,2018,8,,,);

Answer 1

是的，你可以！构造是 % &macro-symbol。这是一个演示：

%macro one();
  %put &SYSMACRONAME;
%mend;

%macro two();
  %put &SYSMACRONAME;
%mend;

%macro dispatch (routine);
  %&routine.()
%mend;

%dispatch (one)
%dispatch (two)

---- LOG ----
13   %dispatch (one)
ONE
14   %dispatch (two)
TWO

使用宏变量名调用宏

Invoke a Macro Using A Macro Variable Name

callback

sas

metaprogramming

pass-by-reference

sas-macro