Introduce the ability to dump the AST to JSON.

This adds the -ast-dump=json cc1 flag (in addition to -ast-dump=default, which is the default if no dump format is specified), as well as some initial AST dumping functionality and tests.

llvm-svn: 360622

1 files changed, 211 insertions, 0 deletions

diff --git a/clang/test/AST/ast-dump-namespace-json.cpp b/clang/test/AST/ast-dump-namespace-json.cpp
new file mode 100644
index 00000000000..1cf967d7358
--- /dev/null
+++ b/clang/test/AST/ast-dump-namespace-json.cpp
@@ -0,0 +1,211 @@
+// RUN: %clang_cc1 -triple x86_64-pc-linux -std=c++2a -ast-dump=json %s | FileCheck %s
+
+namespace foo {
+}
+// CHECK: "kind": "NamespaceDecl",
+// CHECK-NEXT: "loc": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 3
+// CHECK-NEXT: },
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 3
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 4
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+// CHECK-NEXT: "name": "foo"
+// CHECK-NEXT: },
+
+
+namespace {
+}
+// CHECK: "kind": "NamespaceDecl",
+// CHECK-NEXT: "loc": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 27
+// CHECK-NEXT: },
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 27
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 28
+// CHECK-NEXT: }
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+// CHECK-NEXT: {
+// CHECK-NEXT: "id": "0x{{.*}}",
+// CHECK-NEXT: "kind": "UsingDirectiveDecl",
+// CHECK-NEXT: "loc": {},
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 27
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {}
+// CHECK-NEXT: },
+// CHECK-NEXT: "isImplicit": true,
+// CHECK-NEXT: "nominatedNamespace": {
+// CHECK-NEXT: "id": "0x{{.*}}",
+// CHECK-NEXT: "kind": "NamespaceDecl",
+// CHECK-NEXT: "name": ""
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+
+namespace bar {
+inline namespace __1 {
+}
+}
+// CHECK: "kind": "NamespaceDecl",
+// CHECK-NEXT: "loc": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 68
+// CHECK-NEXT: },
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 68
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 71
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+// CHECK-NEXT: "name": "bar",
+// CHECK-NEXT: "inner": [
+// CHECK-NEXT: {
+// CHECK-NEXT:   "id": "0x{{.*}}",
+// CHECK-NEXT:   "kind": "NamespaceDecl",
+// CHECK-NEXT:   "loc": {
+// CHECK-NEXT:     "col": 18,
+// CHECK-NEXT:     "file": "{{.*}}",
+// CHECK-NEXT:     "line": 69
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "range": {
+// CHECK-NEXT:     "begin": {
+// CHECK-NEXT:       "col": 1,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 69
+// CHECK-NEXT:     },
+// CHECK-NEXT:     "end": {
+// CHECK-NEXT:       "col": 1,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 70
+// CHECK-NEXT:     }
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "name": "__1",
+// CHECK-NEXT:   "isInline": true
+// CHECK-NEXT: }
+// CHECK-NEXT: ]
+// CHECK-NEXT: },
+
+namespace baz::quux {
+}
+// CHECK: "kind": "NamespaceDecl",
+// CHECK-NEXT: "loc": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 118
+// CHECK-NEXT: },
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 118
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 119
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+// CHECK-NEXT: "name": "baz",
+// CHECK-NEXT: "inner": [
+// CHECK-NEXT: {
+// CHECK-NEXT:   "id": "0x{{.*}}",
+// CHECK-NEXT:   "kind": "NamespaceDecl",
+// CHECK-NEXT:   "loc": {
+// CHECK-NEXT:     "col": 16,
+// CHECK-NEXT:     "file": "{{.*}}",
+// CHECK-NEXT:     "line": 118
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "range": {
+// CHECK-NEXT:     "begin": {
+// CHECK-NEXT:       "col": 14,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 118
+// CHECK-NEXT:     },
+// CHECK-NEXT:     "end": {
+// CHECK-NEXT:       "col": 1,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 119
+// CHECK-NEXT:     }
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "name": "quux"
+// CHECK-NEXT: }
+// CHECK-NEXT: ]
+// CHECK-NEXT: },
+
+namespace quux::inline frobble {
+}
+// CHECK: "kind": "NamespaceDecl",
+// CHECK-NEXT: "loc": {
+// CHECK-NEXT: "col": 11,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 165
+// CHECK-NEXT: },
+// CHECK-NEXT: "range": {
+// CHECK-NEXT: "begin": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 165
+// CHECK-NEXT: },
+// CHECK-NEXT: "end": {
+// CHECK-NEXT: "col": 1,
+// CHECK-NEXT: "file": "{{.*}}",
+// CHECK-NEXT: "line": 166
+// CHECK-NEXT: }
+// CHECK-NEXT: },
+// CHECK-NEXT: "name": "quux",
+// CHECK-NEXT: "inner": [
+// CHECK-NEXT: {
+// CHECK-NEXT:   "id": "0x{{.*}}",
+// CHECK-NEXT:   "kind": "NamespaceDecl",
+// CHECK-NEXT:   "loc": {
+// CHECK-NEXT:     "col": 24,
+// CHECK-NEXT:     "file": "{{.*}}",
+// CHECK-NEXT:     "line": 165
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "range": {
+// CHECK-NEXT:     "begin": {
+// CHECK-NEXT:       "col": 17,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 165
+// CHECK-NEXT:     },
+// CHECK-NEXT:     "end": {
+// CHECK-NEXT:       "col": 1,
+// CHECK-NEXT:       "file": "{{.*}}",
+// CHECK-NEXT:       "line": 166
+// CHECK-NEXT:     }
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "name": "frobble",
+// CHECK-NEXT:   "isInline": true
+// CHECK-NEXT: }
+// CHECK-NEXT: ]
+// CHECK-NEXT: }