wire up chr

Author: paleolimbot

r/src/vctr_builder.cc

@@ -29,6 +29,7 @@
 
 #include "vctr_builder.h"
 #include "vctr_builder_base.h"
+#include "vctr_builder_chr.h"
 #include "vctr_builder_dbl.h"
 #include "vctr_builder_int.h"
 #include "vctr_builder_int64.h"

r/src/vctr_builder_chr.h

@@ -0,0 +1,98 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#ifndef R_NANOARROW_VCTR_BUILDER_CHR_H_INCLUDED
+#define R_NANOARROW_VCTR_BUILDER_CHR_H_INCLUDED
+
+#define R_NO_REMAP
+#include <R.h>
+#include <Rinternals.h>
+
+#include <inttypes.h>
+#include <stdint.h>
+
+#include "vctr_builder_base.h"
+
+class ChrBuilder : public VctrBuilder {
+ public:
+  explicit ChrBuilder(SEXP ptype_sexp) : VctrBuilder(VECTOR_TYPE_CHR, ptype_sexp) {}
+
+  SEXP GetPtype() override { return Rf_allocVector(STRSXP, 0); }
+
+  ArrowErrorCode Reserve(R_xlen_t n, ArrowError* error) override {
+    NANOARROW_RETURN_NOT_OK(VctrBuilder::Reserve(n, error));
+    SEXP value = PROTECT(Rf_allocVector(STRSXP, n));
+    SetValue(value);
+    UNPROTECT(1);
+    return NANOARROW_OK;
+  }
+
+  ArrowErrorCode PushNext(const ArrowArray* array, ArrowError* error) override {
+    NANOARROW_RETURN_NOT_OK(VctrBuilder::PushNext(array, error));
+    R_xlen_t length = array_view_.length;
+
+    switch (array_view_.storage_type) {
+      case NANOARROW_TYPE_NA:
+        for (R_xlen_t i = 0; i < length; i++) {
+          SET_STRING_ELT(value_, value_size_ + i, NA_STRING);
+        }
+        return NANOARROW_OK;
+
+      case NANOARROW_TYPE_INT8:
+      case NANOARROW_TYPE_UINT8:
+      case NANOARROW_TYPE_INT16:
+      case NANOARROW_TYPE_UINT16:
+      case NANOARROW_TYPE_INT32:
+      case NANOARROW_TYPE_UINT32:
+      case NANOARROW_TYPE_INT64: {
+        char buf[64];
+        for (R_xlen_t i = 0; i < length; i++) {
+          if (ArrowArrayViewIsNull(&array_view_, i)) {
+            SET_STRING_ELT(value_, value_size_ + i, NA_STRING);
+          } else {
+            int n_chars = snprintf(buf, sizeof(buf), "%" PRId64,
+                                   ArrowArrayViewGetIntUnsafe(&array_view_, i));
+            SET_STRING_ELT(value_, value_size_ + i,
+                           Rf_mkCharLenCE(buf, n_chars, CE_UTF8));
+          }
+        }
+        return NANOARROW_OK;
+      }
+
+      case NANOARROW_TYPE_STRING:
+      case NANOARROW_TYPE_LARGE_STRING: {
+        struct ArrowStringView item;
+        for (R_xlen_t i = 0; i < length; i++) {
+          if (ArrowArrayViewIsNull(&array_view_, i)) {
+            SET_STRING_ELT(value_, value_size_ + i, NA_STRING);
+          } else {
+            item = ArrowArrayViewGetStringUnsafe(&array_view_, i);
+            SET_STRING_ELT(value_, value_size_ + i,
+                           Rf_mkCharLenCE(item.data, (int)item.size_bytes, CE_UTF8));
+          }
+        }
+
+        return NANOARROW_OK;
+      }
+
+      default:
+        return ENOTSUP;
+    }
+  }
+};
+
+#endif

r/src/vctr_builder_primitive.h

@@ -24,17 +24,6 @@
 
 #include "vctr_builder_base.h"
 
-class ChrBuilder : public VctrBuilder {
- public:
-  explicit ChrBuilder(SEXP ptype_sexp)
-      : VctrBuilder(VECTOR_TYPE_CHR, ptype_sexp),
-        use_altrep_(VCTR_BUILDER_USE_ALTREP_DEFAULT) {}
-
-  SEXP GetPtype() override { return Rf_allocVector(STRSXP, 0); }
-
-  VctrBuilderUseAltrep use_altrep_;
-};
-
 class BlobBuilder : public VctrBuilder {
  public:
   explicit BlobBuilder(SEXP ptype_sexp) : VctrBuilder(VECTOR_TYPE_BLOB, ptype_sexp) {}