codegen: add testdata with a minimalistic working setup

cmd/codegen/testdata/Makefile

@@ -0,0 +1,4 @@
+all:
+	mkdir -p output
+	cd output; \
+		go run ../.. --verbose --package mypkg --include header.h --preset ..//preset.json -lng -lg -d ../deffinitions.json -e ../structs_and_enums.json -t ../typedefs_dict.json

cmd/codegen/testdata/deffinitions.json

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+{
+    "FuncName": {
+        "ov_cimguiname": "Foo",
+        "original_func_name": "OrgFoo",
+        "args": "(A a)",
+        "argsT": [
+            {
+                "name": "a",
+                "type": "A",
+                "custom_type": ""
+            }
+        ],
+        "defaults": {
+            "a": "1"
+        },
+        "nonUDT": 0,
+        "comment": "function comment (optional)",
+        "location": 15
+    }
+}
+

cmd/codegen/testdata/output/structs_accessor.cpp

@@ -0,0 +1,12 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+
+#include <string.h>
+#include "wrapper.h"
+#include "structs_accessor.h"
+
+void wrap_B_SetField1(B *BPtr, int v) { BPtr->Field1 = v; }
+int wrap_B_GetField1(B *self) { return self->Field1; }
+void wrap_B_SetField2(B *BPtr, A v) { BPtr->Field2 = v; }
+A wrap_B_GetField2(B *self) { return self->Field2; }

cmd/codegen/testdata/output/structs_accessor.h

@@ -0,0 +1,19 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+#pragma once
+
+#include "wrapper.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void wrap_B_SetField1(B *BPtr, int v);
+extern int wrap_B_GetField1(B *self);
+extern void wrap_B_SetField2(B *BPtr, A v);
+extern A wrap_B_GetField2(B *self);
+
+#ifdef __cplusplus
+}
+#endif

cmd/codegen/testdata/output/typedefs.cpp

@@ -0,0 +1,6 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+
+#include "typedefs.h"
+#include "header.h"

cmd/codegen/testdata/output/typedefs.h

@@ -0,0 +1,15 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+
+#pragma once
+
+#include "header.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif

cmd/codegen/testdata/output/wrapper.cpp

@@ -0,0 +1,6 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+#include "wrapper.h"
+#include "header.h"
+

cmd/codegen/testdata/output/wrapper.h

@@ -0,0 +1,15 @@
+// Code generated by cmd/codegen from https://github.com/AllenDang/cimgui-go.
+// DO NOT EDIT.
+
+#pragma once
+
+#include "header.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif

cmd/codegen/testdata/preset.json

@@ -0,0 +1,13 @@
+{
+        "PackagePath": "example.com/mypkg",
+        "TypedefsPoolSize": 32,
+        "DefaultArgReplace": {
+                "nullptr":    "0",
+                "NULL":       "0",
+                "((void*)0)": "0"
+        },
+        "DefaultArgArbitraryValue": {
+                "text_end":  "0",
+                "text_end_": "0"
+        }
+}

cmd/codegen/testdata/structs_and_enums.json

@@ -0,0 +1,39 @@
+{
+        "structs":{
+                "B":[
+                        {
+                                "name": "Field1",
+                                "type": "int"
+                        },
+                        {
+                                "name": "Field2",
+                                "type": "A"
+                        }
+                ]
+        },
+        "struct_comments": {
+                "B": {
+                        "above": "// this is an example struct"
+                }
+        },
+        "enums": {
+                "A_": [
+                        {
+                                "calc_value": 0,
+                                "comment": "// A default value of A",
+                                "name": "A_Default",
+                                "value": "0"
+                        },
+                        {
+                                "calc_value": 1,
+                                "name": "A_One",
+                                "value": "1 << 0"
+                        }
+                ]
+        },
+        "enum_comments": {
+                "A_": {
+                        "above": "// this is an example enum"
+                }
+        }
+}

cmd/codegen/testdata/typedefs_dict.json

@@ -0,0 +1,4 @@
+{
+        "A": "int",
+        "B": "struct B"
+}