add: python extension

Author: lcexc

.gitignore

@@ -1,5 +1,6 @@
 obj/
 
+pyext/build/
 *.dll
 *.exe
 

pyext/QJS.c

@@ -0,0 +1,103 @@
+#include <Python.h>
+#include <stdio.h>
+#include "libqjs.h"
+
+
+static PyObject* qjs_init(PyObject* self, PyObject *args) {
+
+    return Py_BuildValue("b", 0);
+}
+
+static PyObject* qjs_runcode(PyObject* self, PyObject *args) {
+    JSRuntime *rt;
+    JSContext *ctx;
+    const char *s;
+    char *code;
+    JSValue val, global_obj;
+    int ret, tag, code_len, has_module=0, eval_flags;
+
+    if (!PyArg_ParseTuple(args, "s", &code))
+        return NULL;
+    code_len = strlen(code);
+    rt = JS_NewRuntime();
+    ctx = JS_NewContext(rt);
+
+    /* loader for ES6 modules */
+    JS_SetModuleLoaderFunc(rt, NULL, js_module_loader, NULL);
+
+    js_std_add_helpers(ctx, 0, NULL); // int argc, char **argv
+
+    /* system modules */
+    js_init_module_std(ctx, "std");
+    js_init_module_os(ctx, "os");
+
+    has_module = JS_DetectModule((const char *)code, code_len);
+
+    if (has_module)
+        eval_flags = JS_EVAL_TYPE_MODULE;
+    else
+        eval_flags = JS_EVAL_TYPE_GLOBAL;
+
+    if ((eval_flags & JS_EVAL_TYPE_MASK) == JS_EVAL_TYPE_MODULE) {
+        /* for the modules, we compile then run to be able to set
+           import.meta */
+        val = JS_Eval(ctx, code, code_len, "<input>",
+                      eval_flags | JS_EVAL_FLAG_COMPILE_ONLY);
+        
+        if (JS_IsException(val)) {
+
+            js_std_dump_error(ctx);
+            return NULL;
+        }
+
+        js_module_set_import_meta(ctx, val, 1, 1);
+        val = JS_EvalFunction(ctx, val);
+        // 如果包含模块,返回值要写入全局变量
+        global_obj = JS_GetGlobalObject(ctx);
+        val = JS_GetPropertyStr(ctx, global_obj, "_r");
+        JS_FreeValue(ctx, global_obj);
+    } else { // 不包含模块,直接运行
+        val = JS_Eval(ctx, code, code_len, "<input>", eval_flags);
+    }
+    // //  buf, buf_len, filename, eval_flags
+    // val = JS_Eval(ctx, code, strlen(code), "<input>", -1);
+    
+    if (JS_IsException(val)) {
+        js_std_dump_error(ctx);
+        return NULL;
+    }
+
+    tag = JS_VALUE_GET_TAG(val);
+    
+    s = JS_ToCString(ctx, val);
+
+    JS_FreeValue(ctx, val);
+    // printf("return val[%d]: %s \n", tag, s);
+
+    js_std_free_handlers(rt);
+    JS_FreeContext(ctx);
+    JS_FreeRuntime(rt);
+
+    return Py_BuildValue("s", s);
+    
+}
+
+static PyMethodDef qjs_funcs[] = {
+    {"init", (PyCFunction)qjs_init, METH_VARARGS, "helloworld_docs"},
+    {"eval_js", (PyCFunction)qjs_runcode,  METH_VARARGS, "helloworld_docs"},
+    {NULL, NULL, 0, NULL}
+};
+
+static PyModuleDef qjs_module = {
+    PyModuleDef_HEAD_INIT,
+    "qjs",   /* name of module */
+    NULL, /* module documentation, may be NULL */
+    -1,       /* size of per-interpreter state of the module,
+                 or -1 if the module keeps state in global variables. */
+    qjs_funcs
+};
+
+
+PyMODINIT_FUNC PyInit_qjs() {
+    return PyModule_Create(&qjs_module);
+}

pyext/qjs.cp36-win_amd64.pyd

@@ -0,0 +1,21 @@
+from distutils.core import setup, Extension
+import distutils.cygwinccompiler
+distutils.cygwinccompiler.get_msvcr = lambda: []
+
+# python setup.py build -f -c mingw32
+
+#libs = ["../obj/quickjs.o","../obj/libregexp.o","../obj/libunicode.o","../obj/cutils.o","../obj/quickjs-libc.o"]
+
+srcs = ['QJS.c', "../src/cutils.c","../src/libregexp.c","../src/libunicode.c","../src/quickjs.c","../src/quickjs-libc.c"]
+
+extra_compile_args = ['-DCONFIG_VERSION=\\"2020-01-19\\"']
+
+setup(name='qjs', version='1.0',
+      ext_modules=[
+            Extension('qjs', srcs , 
+            include_dirs = ['../include'],
+            extra_compile_args=extra_compile_args,
+            extra_link_args = ["-Wl,-Bstatic"]
+            #extra_link_args = ["-Wl,-Bstatic"] +  libs
+            )])
+

pyext/setup.py

@@ -0,0 +1,33 @@
+import os
+import qjs
+
+code = '''import * as std from 'std';
+
+
+((G)=>{
+    const sys_path = std.getenv('PATH');
+    console.log("run .....");
+    G._r = 'result: '+ sys_path;
+})(globalThis);
+
+'''
+
+code1 = '(()=>{return Date.now();})();'
+
+mod_test = '''import * as m from '../lib/toolm.dll'
+
+console.log("Hello World 你好");
+
+console.log(m.echo("Hello , 哈哈"));
+
+console.log(m.md5('123456'));'''
+
+print("work dir:", os.getcwd())
+print(qjs.eval_js(code))
+print(qjs.eval_js(code1))
+
+print(qjs.eval_js(mod_test))
+
+
+
+