[Rcpp-devel] [Rcpp-commits] r202 - in pkg: inst/examples/RcppInline src

[noreply at r-forge.r-project.org]

Author: edd
Date: 2009-12-19 19:54:49 +0100 (Sat, 19 Dec 2009)
New Revision: 202

Modified:
   pkg/inst/examples/RcppInline/RcppSexpTests.r
   pkg/src/RcppSexp.cpp
   pkg/src/RcppSexp.h
Log:
complete example -- RcppSexp now deals elegantly and easily with double, int and std::string scalars and vectors


Modified: pkg/inst/examples/RcppInline/RcppSexpTests.r
===================================================================
--- pkg/inst/examples/RcppInline/RcppSexpTests.r	2009-12-19 18:39:34 UTC (rev 201)
+++ pkg/inst/examples/RcppInline/RcppSexpTests.r	2009-12-19 18:54:49 UTC (rev 202)
@@ -55,38 +55,33 @@
         for (size_t i=0; i<iv.size(); i++) {
             iv[i] = 2*iv[i];
         }
-        RcppSexp t = RcppSexp( iv );
-	return(t.asSexp());
+	return(RcppSexp( iv ).asSexp());
         '
 funx <- cfunction(signature(x="numeric"), foo, Rcpp=TRUE, verbose=FALSE)
 print(funx(x=2:5))
 
 
-cat("\n===Double Vector via RcppResultSet.getSEXP\n")
+cat("\n===Double Vector\n")
 foo <- '
         std::vector<double> iv = RcppSexp(x).asStdVectorDouble();
 	std::cout << "Returning twice the value of vector : ";
         for (size_t i=0; i<iv.size(); i++) {
             iv[i] = 2*iv[i];
         }
-        RcppResultSet rs;
-        rs.add("", iv);
-        return(rs.getSEXP());
+ 	return(RcppSexp( iv ).asSexp());
         '
 funx <- cfunction(signature(x="numeric"), foo, Rcpp=TRUE, verbose=FALSE)
 print(funx(x=0.1+2:5))
 
 
-cat("\n===String Vector via RcppResultSet.getSEXP\n")
+cat("\n===String Vector\n")
 foo <- '
         std::vector<std::string> iv = RcppSexp(x).asStdVectorString();
 	std::cout << "Returning twice the value of vector : ";
         for (size_t i=0; i<iv.size(); i++) {
             iv[i] = iv[i] + iv[i];
         }
-        RcppResultSet rs;
-        rs.add("", iv);
-        return(rs.getSEXP());
+ 	return(RcppSexp( iv ).asSexp());
         '
 funx <- cfunction(signature(x="character"), foo, Rcpp=TRUE, verbose=FALSE)
 print(funx(x=c("foo", "bar")))

Modified: pkg/src/RcppSexp.cpp
===================================================================
--- pkg/src/RcppSexp.cpp	2009-12-19 18:39:34 UTC (rev 201)
+++ pkg/src/RcppSexp.cpp	2009-12-19 18:54:49 UTC (rev 202)
@@ -52,6 +52,26 @@
     }	
 }
 
+RcppSexp::RcppSexp(const std::vector<double> & v) {
+    logTxt("RcppSexp from double vector\n");
+    int n = v.size();
+    m_sexp = Rf_allocVector(REALSXP, n);
+    R_PreserveObject(m_sexp);
+    for (int i = 0; i < n; i++) {
+	REAL(m_sexp)[i] = v[i];
+    }	
+}
+
+RcppSexp::RcppSexp(const std::vector<std::string> & v) {
+    logTxt("RcppSexp from std::string vector\n");
+    int n = v.size();
+    m_sexp = Rf_allocVector(STRSXP, n);
+    R_PreserveObject(m_sexp);
+    for (int i = 0; i < n; i++) {
+	SET_STRING_ELT(m_sexp, i, Rf_mkChar(v[i].c_str()));
+    }	
+}
+
 RcppSexp::~RcppSexp() {
     logTxt("dtor");
     R_ReleaseObject(m_sexp);

Modified: pkg/src/RcppSexp.h
===================================================================
--- pkg/src/RcppSexp.h	2009-12-19 18:39:34 UTC (rev 201)
+++ pkg/src/RcppSexp.h	2009-12-19 18:54:49 UTC (rev 202)
@@ -32,6 +32,8 @@
     RcppSexp(const int & v);
     RcppSexp(const std::string & v);
     RcppSexp(const std::vector<int> & v);
+    RcppSexp(const std::vector<double> & v);
+    RcppSexp(const std::vector<std::string> & v);
     ~RcppSexp();
 
     double                   asDouble() const;

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