[PATCH] add Visual Studio Code configuration

[Paolo Bonzini <pbonzini@redhat.com>]

Add configurations to build files with Visual Studio Code and
to retrieve the search path for headers from the compile_commands.json
file.

Using this configuration requires installing the Meson extension and
using a build subdirectory that matches the one configured in the
Meson extension itself.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 .vscode/c_cpp_properties.json | 13 +++++++++++++
 .vscode/settings.json         | 11 +++++++++++
 .vscode/tasks.json            | 23 +++++++++++++++++++++++
 scripts/rebuild.py            | 22 ++++++++++++++++++++++
 4 files changed, 69 insertions(+)
 create mode 100644 .vscode/c_cpp_properties.json
 create mode 100644 .vscode/settings.json
 create mode 100644 .vscode/tasks.json
 create mode 100755 scripts/rebuild.py

diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000000..43f5fc1b4d
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,13 @@
+{
+    "configurations": [
+        {
+            "name": "qemu",
+            "includePath": [ "${default}", "${workspaceFolder}/linux-headers/**", "${workspaceFolder}/include/**", "${workspaceFolder}/+build/**"],
+            "compileCommands": "${workspaceFolder}/${config:mesonbuild.buildFolder}/compile_commands.json",
+            "intelliSenseMode": "linux-gcc-x64",
+            "cStandard": "c11",
+            "cppStandard": "c++14"
+        }
+    ],
+    "version": 4
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000..efbbb4f88b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,11 @@
+{
+	"files.associations": {
+		"*.mak": "makefile",
+		"*.c.inc": "c",
+		"*.h.inc": "c",
+		"*.json": "python",
+		"*.rst.inc": "restructuredtext",
+		"*.vert": "glsl",
+		"*.frag": "glsl"
+	}
+}
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000000..362821043e
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,23 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "cppbuild",
+			"label": "C/C++: build active file with compile_commands.json",
+			"command": "python3",
+			"args": [
+				"${workspaceFolder}/scripts/rebuild.py", "${file}"
+			],
+			"options": {
+				"cwd": "${workspaceFolder}/${config:mesonbuild.buildFolder}"
+			},
+			"problemMatcher": [
+				"$gcc"
+			],
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			}
+		}
+	]
+}
diff --git a/scripts/rebuild.py b/scripts/rebuild.py
new file mode 100755
index 0000000000..e35e08f42d
--- /dev/null
+++ b/scripts/rebuild.py
@@ -0,0 +1,22 @@
+#! /usr/bin/env python3
+#
+# Author: Paolo Bonzini <pbonzini@redhat.com>
+#
+# This program compiles the input files using commands from the
+# compile_commands.json file.  (Unlike Make/ninja, the _source_
+# file is passed to the program rather than the targe).  It is
+# mostly intended to be called from editors.
+
+import os
+import sys
+import json
+
+with open('compile_commands.json') as f:
+    cc_json = json.load(f)
+
+paths = set((os.path.relpath(i) for i in sys.argv[1:]))
+for i in cc_json:
+    if i['file'] in paths:
+        os.chdir(i['directory'])
+        print(i['command'])
+        os.system(i['command'])
-- 
2.26.2