luahl

4 files changed, 121 insertions, 54 deletions

diff --git a/src/nvim/api/buffer.c b/src/nvim/api/buffer.c
index 15065760b3..e58035b6c7 100644
--- a/src/nvim/api/buffer.c
+++ b/src/nvim/api/buffer.c
@@ -1664,43 +1664,6 @@ void nvim_buf_clear_highlight(Buffer buffer,
   nvim_buf_clear_namespace(buffer, ns_id, line_start, line_end, err);
 }
 
-static VirtText parse_virt_text(Array chunks, Error *err)
-{
-  VirtText virt_text = KV_INITIAL_VALUE;
-  for (size_t i = 0; i < chunks.size; i++) {
-    if (chunks.items[i].type != kObjectTypeArray) {
-      api_set_error(err, kErrorTypeValidation, "Chunk is not an array");
-      goto free_exit;
-    }
-    Array chunk = chunks.items[i].data.array;
-    if (chunk.size == 0 || chunk.size > 2
-        || chunk.items[0].type != kObjectTypeString
-        || (chunk.size == 2 && chunk.items[1].type != kObjectTypeString)) {
-      api_set_error(err, kErrorTypeValidation,
-                    "Chunk is not an array with one or two strings");
-      goto free_exit;
-    }
-
-    String str = chunk.items[0].data.string;
-    char *text = transstr(str.size > 0 ? str.data : "");  // allocates
-
-    int hl_id = 0;
-    if (chunk.size == 2) {
-      String hl = chunk.items[1].data.string;
-      if (hl.size > 0) {
-        hl_id = syn_check_group((char_u *)hl.data, (int)hl.size);
-      }
-    }
-    kv_push(virt_text, ((VirtTextChunk){ .text = text, .hl_id = hl_id }));
-  }
-
-  return virt_text;
-
-free_exit:
-  clear_virttext(&virt_text);
-  return virt_text;
-}
-
 
 /// Set the virtual text (annotation) for a buffer line.
 ///
diff --git a/src/nvim/api/private/helpers.c b/src/nvim/api/private/helpers.c
index 13f77d2d85..f1ecd732ee 100644
--- a/src/nvim/api/private/helpers.c
+++ b/src/nvim/api/private/helpers.c
@@ -15,6 +15,8 @@
 #include "nvim/lua/executor.h"
 #include "nvim/ascii.h"
 #include "nvim/assert.h"
+#include "nvim/charset.h"
+#include "nvim/syntax.h"
 #include "nvim/vim.h"
 #include "nvim/buffer.h"
 #include "nvim/window.h"
@@ -1579,3 +1581,40 @@ bool extmark_get_index_from_obj(buf_T *buf, Integer ns_id, Object obj, int
     return false;
   }
 }
+
+VirtText parse_virt_text(Array chunks, Error *err)
+{
+  VirtText virt_text = KV_INITIAL_VALUE;
+  for (size_t i = 0; i < chunks.size; i++) {
+    if (chunks.items[i].type != kObjectTypeArray) {
+      api_set_error(err, kErrorTypeValidation, "Chunk is not an array");
+      goto free_exit;
+    }
+    Array chunk = chunks.items[i].data.array;
+    if (chunk.size == 0 || chunk.size > 2
+        || chunk.items[0].type != kObjectTypeString
+        || (chunk.size == 2 && chunk.items[1].type != kObjectTypeString)) {
+      api_set_error(err, kErrorTypeValidation,
+                    "Chunk is not an array with one or two strings");
+      goto free_exit;
+    }
+
+    String str = chunk.items[0].data.string;
+    char *text = transstr(str.size > 0 ? str.data : "");  // allocates
+
+    int hl_id = 0;
+    if (chunk.size == 2) {
+      String hl = chunk.items[1].data.string;
+      if (hl.size > 0) {
+        hl_id = syn_check_group((char_u *)hl.data, (int)hl.size);
+      }
+    }
+    kv_push(virt_text, ((VirtTextChunk){ .text = text, .hl_id = hl_id }));
+  }
+
+  return virt_text;
+
+free_exit:
+  clear_virttext(&virt_text);
+  return virt_text;
+}
diff --git a/src/nvim/api/vim.c b/src/nvim/api/vim.c
index 9155ffcfb8..cb5d1e1f77 100644
--- a/src/nvim/api/vim.c
+++ b/src/nvim/api/vim.c
@@ -2610,22 +2610,91 @@ Array nvim__inspect_cell(Integer grid, Integer row, Integer col, Error *err)
 /// interface should probably be derived from a reformed
 /// bufhl/virttext interface with full support for multi-line
 /// ranges etc
-void nvim__put_attr(Integer id, Integer start_row, Integer start_col,
-                    Integer end_row, Integer end_col)
+void nvim__put_attr(Integer line, Integer col, Dictionary opts, Error *err)
   FUNC_API_LUA_ONLY
 {
   if (!lua_attr_active) {
     return;
   }
-  if (id == 0 || syn_get_final_id((int)id) == 0) {
-    return;
+  int line2 = -1, hl_id = 0;
+  colnr_T col2 = 0;
+  VirtText virt_text = KV_INITIAL_VALUE;
+  for (size_t i = 0; i < opts.size; i++) {
+    String k = opts.items[i].key;
+    Object *v = &opts.items[i].value;
+    if (strequal("end_line", k.data)) {
+      if (v->type != kObjectTypeInteger) {
+        api_set_error(err, kErrorTypeValidation,
+                      "end_line is not an integer");
+        goto error;
+      }
+      if (v->data.integer < 0) {
+        api_set_error(err, kErrorTypeValidation,
+                      "end_line value outside range");
+        goto error;
+      }
+
+      line2 = (int)v->data.integer;
+    } else if (strequal("end_col", k.data)) {
+      if (v->type != kObjectTypeInteger) {
+        api_set_error(err, kErrorTypeValidation,
+                      "end_col is not an integer");
+        goto error;
+      }
+      if (v->data.integer < 0 || v->data.integer > MAXCOL) {
+        api_set_error(err, kErrorTypeValidation,
+                      "end_col value outside range");
+        goto error;
+      }
+
+      col2 = (colnr_T)v->data.integer;
+    } else if (strequal("hl_group", k.data)) {
+      String hl_group;
+      switch (v->type) {
+        case kObjectTypeString:
+          hl_group = v->data.string;
+          hl_id = syn_check_group(
+              (char_u *)(hl_group.data),
+              (int)hl_group.size);
+          break;
+        case kObjectTypeInteger:
+          hl_id = (int)v->data.integer;
+          break;
+        default:
+          api_set_error(err, kErrorTypeValidation,
+                        "hl_group is not valid.");
+          goto error;
+      }
+    } else if (strequal("virt_text", k.data)) {
+      if (v->type != kObjectTypeArray) {
+        api_set_error(err, kErrorTypeValidation,
+                      "virt_text is not an Array");
+        goto error;
+      }
+      virt_text = parse_virt_text(v->data.array, err);
+      if (ERROR_SET(err)) {
+        goto error;
+      }
+    } else {
+      api_set_error(err, kErrorTypeValidation, "unexpected key: %s", k.data);
+      goto error;
+    }
   }
-  int attr = syn_id2attr((int)id);
-  if (attr == 0) {
+  if (col2 && line2 < 0) {
+    line2 = (int)line;
+  }
+
+  int attr = hl_id ? syn_id2attr((int)hl_id) : 0;
+  if (attr == 0 && !kv_size(virt_text)) {
     return;
   }
-  decorations_add_luahl_attr(attr, (int)start_row, (colnr_T)start_col,
-                             (int)end_row, (colnr_T)end_col);
+
+  VirtText *v = xmalloc(sizeof(*v));
+  *v = virt_text;  // LeakSanitizer be sad
+  decorations_add_luahl_attr(attr, (int)line, (colnr_T)col,
+                             (int)line2, (colnr_T)col2, v);
+error:
+  return;
 }
 
 void nvim__screenshot(String path)
diff --git a/src/nvim/screen.c b/src/nvim/screen.c
index 3c2e1ccaf5..ca1c4589f8 100644
--- a/src/nvim/screen.c
+++ b/src/nvim/screen.c
@@ -639,10 +639,11 @@ bool decorations_active = false;
 
 void decorations_add_luahl_attr(int attr_id,
                                 int start_row, int start_col,
-                                int end_row, int end_col)
+                                int end_row, int end_col, VirtText *virt_text)
 {
   kv_push(decorations.active,
-          ((HlRange){ start_row, start_col, end_row, end_col, attr_id, NULL }));
+          ((HlRange){ start_row, start_col,
+                      end_row, end_col, attr_id, virt_text }));
 }
 
 /*
@@ -2356,14 +2357,9 @@ win_line (
         args.items[2] = INTEGER_OBJ(lnum-1);
         lua_attr_active = true;
         extra_check = true;
-        Object o = nlua_call_ref(buf->b_luahl_line, "line", args, true, &err);
+        nlua_call_ref(buf->b_luahl_line, "line", args, false, &err);
         lua_attr_active = false;
-        if (o.type == kObjectTypeString) {
-          // TODO(bfredl): this is a bit of a hack. A final API should use an
-          // "unified" interface where luahl can add both bufhl and virttext
-          luatext = o.data.string.data;
-          do_virttext = true;
-        } else if (ERROR_SET(&err)) {
+        if (ERROR_SET(&err)) {
           ELOG("error in luahl line: %s", err.msg);
           luatext = err.msg;
           do_virttext = true;