448 lines
12 KiB
Haxe
448 lines
12 KiB
Haxe
package webidl;
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import webidl.Data;
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class Generate {
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static var HEADER_EMSCRIPTEN = "
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#include <emscripten.h>
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#define HL_PRIM
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#define HL_NAME(n) EMSCRIPTEN_KEEPALIVE eb_##n
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#define DEFINE_PRIM(ret, name, args)
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#define _OPT(t) t*
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#define _GET_OPT(value,t) *value
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";
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static var HEADER_HL = "
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#include <hl.h>
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#define _IDL _BYTES
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#define _OPT(t) vdynamic *
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#define _GET_OPT(value,t) (value)->v.t
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";
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static var HEADER_NO_GC = "
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#define alloc_ref(r, _) r
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#define alloc_ref_const(r,_) r
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#define _ref(t) t
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#define _unref(v) v
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#define free_ref(v) delete (v)
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#define HL_CONST const
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";
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static var HEADER_GC = "
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template <typename T> struct pref {
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void *finalize;
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T *value;
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};
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#define _ref(t) pref<t>
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#define _unref(v) v->value
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#define alloc_ref(r,t) _alloc_ref(r,finalize_##t)
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#define alloc_ref_const(r, _) _alloc_const(r)
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#define HL_CONST
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template<typename T> void free_ref( pref<T> *r ) {
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if( !r->finalize ) hl_error(\"delete() is not allowed on const value.\");
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delete r->value;
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r->value = NULL;
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r->finalize = NULL;
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}
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template<typename T> pref<T> *_alloc_ref( T *value, void (*finalize)( pref<T> * ) ) {
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pref<T> *r = (pref<T>*)hl_gc_alloc_finalizer(sizeof(pref<T>));
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r->finalize = finalize;
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r->value = value;
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return r;
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}
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template<typename T> pref<T> *_alloc_const( const T *value ) {
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pref<T> *r = (pref<T>*)hl_gc_alloc_noptr(sizeof(pref<T>));
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r->finalize = NULL;
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r->value = (T*)value;
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return r;
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}
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";
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static function initOpts( opts : Options ) {
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if( opts.outputDir == null )
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opts.outputDir = "";
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else if( !StringTools.endsWith(opts.outputDir,"/") )
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opts.outputDir += "/";
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}
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public static function generateCpp( opts : Options ) {
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initOpts(opts);
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var file = opts.idlFile;
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var content = sys.io.File.getBytes(file);
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var parse = new webidl.Parser();
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var decls = null;
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var gc = opts.autoGC;
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try {
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decls = parse.parseFile(file, new haxe.io.BytesInput(content));
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} catch( msg : String ) {
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throw msg + "(" + file+" line " + parse.line+")";
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}
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var output = new StringBuf();
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function add(str:String) {
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output.add(str.split("\r\n").join("\n") + "\n");
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}
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add("#ifdef EMSCRIPTEN");
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add("");
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add(StringTools.trim(HEADER_EMSCRIPTEN));
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add(StringTools.trim(HEADER_NO_GC));
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add("");
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add("#else");
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add("");
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add('#define HL_NAME(x) ${opts.nativeLib}_##x');
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add(StringTools.trim(HEADER_HL));
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add(StringTools.trim(gc ? HEADER_GC : HEADER_NO_GC));
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add("");
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add("#endif");
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if( opts.includeCode != null ) {
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add("");
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add(StringTools.trim(opts.includeCode));
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}
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add("");
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add('extern "C" {');
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add("");
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var typeNames = new Map();
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var enumNames = new Map();
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// ignore "JSImplementation" interfaces (?)
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for( d in decls.copy() )
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switch( d.kind ) {
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case DInterface(_, attrs, _):
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for( a in attrs )
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switch( a ) {
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case AJSImplementation(_):
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decls.remove(d);
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break;
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default:
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}
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default:
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}
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for( d in decls ) {
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switch( d.kind ) {
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case DInterface(name, attrs, _):
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var prefix = "";
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for( a in attrs )
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switch( a ) {
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case APrefix(name): prefix = name;
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default:
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}
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var fullName = "_ref(" + prefix + name+")*";
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typeNames.set(name, { full : fullName, constructor : prefix + name });
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if( attrs.indexOf(ANoDelete) >= 0 )
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continue;
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add('static void finalize_$name( $fullName _this ) { free_ref(_this); }');
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add('HL_PRIM void HL_NAME(${name}_delete)( $fullName _this ) {\n\tfree_ref(_this);\n}');
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add('DEFINE_PRIM(_VOID, ${name}_delete, _IDL);');
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case DEnum(name, values):
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enumNames.set(name, true);
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typeNames.set(name, { full : "int", constructor : null });
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add('static $name ${name}__values[] = { ${values.join(",")} };');
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case DImplements(_):
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}
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}
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function getEnumName( t : webidl.Data.Type ) {
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return switch( t ) {
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case TCustom(id): enumNames.exists(id) ? id : null;
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default: null;
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}
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}
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function makeType( t : webidl.Data.Type ) {
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return switch( t ) {
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case TFloat: "float";
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case TDouble: "double";
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case TShort: "short";
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case TInt: "int";
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case TVoid: "void";
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case TAny, TVoidPtr: "void*";
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case TArray(t): makeType(t) + "*";
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case TBool: "bool";
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case TCustom(id): typeNames.get(id).full;
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}
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}
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function defType( t ) {
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return switch( t ) {
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case TFloat: "_F32";
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case TDouble: "_F64";
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case TShort: "_I16";
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case TInt: "_I32";
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case TVoid: "_VOID";
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case TAny, TVoidPtr: "_BYTES";
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case TArray(t): "_BYTES";
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case TBool: "_BOOL";
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case TCustom(name): enumNames.exists(name) ? "_I32" : "_IDL";
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}
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}
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function dynamicAccess(t) {
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return switch( t ) {
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case TFloat: "f";
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case TDouble: "d";
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case TShort: "ui16";
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case TInt: "i";
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case TBool: "b";
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default: throw "assert";
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}
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}
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function makeTypeDecl( td : TypeAttr ) {
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var prefix = "";
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for( a in td.attr ) {
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switch( a ) {
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case AConst: prefix += "HL_CONST ";
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default:
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}
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}
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return prefix + makeType(td.t);
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}
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function isDyn( arg : { opt : Bool, t : TypeAttr } ) {
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return arg.opt && !arg.t.t.match(TCustom(_));
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}
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for( d in decls ) {
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switch( d.kind ) {
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case DInterface(name, attrs, fields):
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for( f in fields ) {
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switch( f.kind ) {
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case FMethod(margs, ret):
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var isConstr = f.name == name;
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var args = isConstr ? margs : [{ name : "_this", t : { t : TCustom(name), attr : [] }, opt : false }].concat(margs);
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var tret = isConstr ? { t : TCustom(name), attr : [] } : ret;
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var funName = name + "_" + (isConstr ? "new" + args.length : f.name + (args.length - 1));
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output.add('HL_PRIM ${makeTypeDecl(tret)} HL_NAME($funName)(');
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var first = true;
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for( a in args ) {
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if( first ) first = false else output.add(", ");
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if( isDyn(a) )
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output.add("_OPT("+makeType(a.t.t)+")");
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else
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output.add(makeType(a.t.t));
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output.add(" " + a.name);
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}
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add(') {');
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function addCall(margs : Array<{ name : String, opt : Bool, t : TypeAttr }> ) {
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var refRet = null;
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var enumName = getEnumName(tret.t);
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if( isConstr ) {
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refRet = name;
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output.add('return alloc_ref((new ${typeNames.get(refRet).constructor}(');
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} else {
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if( tret.t != TVoid ) output.add("return ");
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for( a in ret.attr ) {
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switch( a ) {
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case ARef, AValue:
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refRet = switch(tret.t) {
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case TCustom(id): id;
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default: throw "assert";
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}
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if( a == ARef && tret.attr.indexOf(AConst) >= 0 )
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output.add('alloc_ref_const(&('); // we shouldn't call delete() on this one !
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else
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output.add('alloc_ref(new ${typeNames.get(refRet).constructor}(');
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default:
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}
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}
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if( enumName != null )
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output.add('make__$enumName(');
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else if( refRet == null && ret.t.match(TCustom(_)) ) {
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refRet = switch(tret.t) {
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case TCustom(id): id;
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default: throw "assert";
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}
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if( tret.attr.indexOf(AConst) >= 0 )
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output.add('alloc_ref_const((');
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else
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output.add('alloc_ref((');
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}
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switch( f.name ) {
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case "op_mul":
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output.add("*_unref(_this) * (");
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case "op_add":
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output.add("*_unref(_this) + (");
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case "op_sub":
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output.add("*_unref(_this) - (");
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case "op_div":
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output.add("*_unref(_this) / (");
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case "op_mulq":
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output.add("*_unref(_this) *= (");
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default:
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output.add("_unref(_this)->" + f.name+"(");
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}
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}
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var first = true;
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for( a in margs ) {
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if( first ) first = false else output.add(", ");
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for( a in a.t.attr ) {
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switch( a ) {
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case ARef: output.add("*"); // unref
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default:
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}
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}
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var e = getEnumName(a.t.t);
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if( e != null )
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output.add('${e}__values[${a.name}]');
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else switch( a.t.t ) {
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case TCustom(_):
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output.add('_unref(${a.name})');
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default:
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if( isDyn(a) ) {
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output.add("_GET_OPT("+a.name+","+dynamicAccess(a.t.t)+")");
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} else
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output.add(a.name);
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}
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}
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if( enumName != null ) output.add(')');
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if( refRet != null ) output.add(')),$refRet');
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add(");");
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}
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var hasOpt = false;
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for( i in 0...margs.length )
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if( margs[i].opt ) {
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hasOpt = true;
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break;
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}
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if( hasOpt ) {
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for( i in 0...margs.length )
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if( margs[i].opt ) {
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add("\tif( !" + margs[i].name+" )");
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output.add("\t\t");
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addCall(margs.slice(0, i));
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add("\telse");
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}
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output.add("\t\t");
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addCall(margs);
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} else {
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output.add("\t");
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addCall(margs);
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}
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add('}');
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output.add('DEFINE_PRIM(${defType(tret.t)}, $funName,');
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for( a in args )
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output.add(' ' + (isDyn(a) ? "_NULL(" + defType(a.t.t)+")" : defType(a.t.t)));
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add(');');
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add('');
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case FAttribute(t):
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var isVal = t.attr.indexOf(AValue) >= 0;
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var tname = switch( t.t ) { case TCustom(id): id; default: null; };
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var isRef = tname != null;
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var enumName = getEnumName(t.t);
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var isConst = t.attr.indexOf(AConst) >= 0;
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if( enumName != null ) throw "TODO : enum attribute";
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add('HL_PRIM ${makeTypeDecl(t)} HL_NAME(${name}_get_${f.name})( ${typeNames.get(name).full} _this ) {');
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if( isVal ) {
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var fname = typeNames.get(tname).constructor;
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add('\treturn alloc_ref(new $fname(_unref(_this)->${f.name}),$tname);');
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} else if( isRef )
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add('\treturn alloc_ref${isConst?'_const':''}(_unref(_this)->${f.name},$tname);');
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else
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add('\treturn _unref(_this)->${f.name};');
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add('}');
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add('HL_PRIM ${makeTypeDecl(t)} HL_NAME(${name}_set_${f.name})( ${typeNames.get(name).full} _this, ${makeTypeDecl(t)} value ) {');
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add('\t_unref(_this)->${f.name} = ${isVal?"*":""}${isRef?"_unref":""}(value);');
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add('\treturn value;');
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add('}');
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var td = defType(t.t);
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add('DEFINE_PRIM($td,${name}_get_${f.name},_IDL);');
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add('DEFINE_PRIM($td,${name}_set_${f.name},_IDL $td);');
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add('');
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case DConst(_, _, _):
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}
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}
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case DEnum(_), DImplements(_):
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}
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}
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add("}"); // extern C
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sys.io.File.saveContent(opts.outputDir + opts.nativeLib+".cpp", output.toString());
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}
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static function command( cmd, args : Array<String> ) {
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Sys.println("> " + cmd + " " + args.join(" "));
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var ret = Sys.command(cmd, args);
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if( ret != 0 ) throw "Command '" + cmd + "' has exit with error code " + ret;
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}
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public static function generateJs( opts : Options, sources : Array<String>, ?params : Array<String> ) {
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if( params == null )
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params = [];
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initOpts(opts);
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var hasOpt = false;
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for( p in params )
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if( p.substr(0, 2) == "-O" )
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hasOpt = true;
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if( !hasOpt )
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params.push("-O2");
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var lib = opts.nativeLib;
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var emSdk = Sys.getEnv("EMSCRIPTEN");
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if( emSdk == null )
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throw "Missing EMSCRIPTEN environment variable. Install emscripten";
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var emcc = emSdk + "/emcc";
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// build sources BC files
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var outFiles = [];
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sources.push(lib+".cpp");
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for( cfile in sources ) {
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var out = opts.outputDir + cfile.substr(0, -4) + ".bc";
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var args = params.concat(["-c", cfile, "-o", out]);
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command( emcc, args);
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outFiles.push(out);
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}
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// link : because too many files, generate Makefile
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var tmp = opts.outputDir + "Makefile.tmp";
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var args = params.concat([
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"-s", 'EXPORT_NAME="\'$lib\'"', "-s", "MODULARIZE=1",
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"--memory-init-file", "0",
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"-o", '$lib.js'
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]);
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var output = "SOURCES = " + outFiles.join(" ") + "\n";
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output += "all:\n";
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output += "\t"+emcc+" $(SOURCES) " + args.join(" ");
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sys.io.File.saveContent(tmp, output);
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command("make", ["-f", tmp]);
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sys.FileSystem.deleteFile(tmp);
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}
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}
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