diff options
| -rwxr-xr-x | tools/bindings_generator.py | 49 |
1 files changed, 30 insertions, 19 deletions
diff --git a/tools/bindings_generator.py b/tools/bindings_generator.py index a40cf136..0dbcca8e 100755 --- a/tools/bindings_generator.py +++ b/tools/bindings_generator.py @@ -33,6 +33,9 @@ We generate the following: you to run something like closure compiler advanced opts on the library+bindings, and the bindings will remain accessible. + prevent_dfe: If true, will use all the generated C functions, to prevent + dead function elimination from removing them. + For example, JSON can be { "ignored": "class1,class2::func" }. The C bindings file is basically a tiny C wrapper around the C++ code. @@ -63,6 +66,7 @@ basename = sys.argv[1] ignored = [] type_processor = lambda t: t export = 0 +prevent_dfe = 0 if '--' in sys.argv: index = sys.argv.index('--') @@ -75,6 +79,8 @@ if '--' in sys.argv: type_processor = eval(json['type_processor']) if json.get('export'): export = json['export'] + if json.get('prevent_dfe'): + prevent_dfe = eval(json['prevent_dfe']) print 'zz ignoring', ignored @@ -163,7 +169,7 @@ for classname, clazz in classes.iteritems(): method['operator'] = ' return *self *= arg0;' elif 'mul' in method['name']: method['name'] = 'op_mul' - method['operator'] = ' static %s ret = *self * arg0; return ret;' % method['returns'] + method['operator'] = ' static %s ret; ret = *self * arg0; return ret;' % method['returns'] elif 'div' in method['name']: method['name'] = 'op_div' method['operator'] = ' return *self /= arg0;' @@ -598,7 +604,7 @@ def generate_class(generating_classname, classname, clazz): # TODO: deprecate ge if method.get('operator'): gen_c.write(method['operator']) else: - gen_c.write(''' static %s ret = %s%s(%s); + gen_c.write(''' static %s ret; ret = %s%s(%s); return ret;''' % (method['returns'], callprefix, actualmname, ', '.join(justargs(args)[:i]))) @@ -754,29 +760,34 @@ for classname, clazz in classes.iteritems(): # Finish up gen_c.write(''' + } +''') -#include <stdio.h> +if prevent_dfe: + gen_c.write(''' -struct EmscriptenEnsurer -{ - EmscriptenEnsurer() { - // Actually use the binding functions, so DFE will not eliminate them - // FIXME: A negative side effect of this is that they take up space in FUNCTION_TABLE - int sum = 0; - void *seen = (void*)%s; -''' % c_funcs[0]) + #include <stdio.h> -for func in c_funcs[1:]: - gen_c.write(''' sum += (void*)%s == seen; -''' % func) + struct EmscriptenEnsurer + { + EmscriptenEnsurer() { + // Actually use the binding functions, so DFE will not eliminate them + // FIXME: A negative side effect of this is that they take up space in FUNCTION_TABLE + int sum = 0; + void *seen = (void*)%s; + ''' % c_funcs[0]) -gen_c.write(''' printf("(%d)\\n", sum); - } -}; + for func in c_funcs[1:]: + gen_c.write(''' sum += (void*)%s == seen; + ''' % func) -EmscriptenEnsurer emscriptenEnsurer; -''') + gen_c.write(''' printf("(%d)\\n", sum); + } + }; + + EmscriptenEnsurer emscriptenEnsurer; + ''') gen_c.close() gen_js.close() |