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microd.c
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// This implements microD
#include "microd.h"
#include <assert.h>
#include<typeinfo>
#include "rmem.h"
#include "root.h"
#include "module.h"
#include "template.h"
#include "declaration.h"
#include "statement.h"
#include "attrib.h"
#include "init.h"
#include "aggregate.h"
#include "arraytypes.h"
#include "id.h"
Dsymbols xdeferred;
OutBuffer buf1; // struct/union/enum forward declaration & includes
OutBuffer buf2; // struct/union/enum definition & var/func forward declaration
OutBuffer buf3; // var/func definition
void microd_decl1(const char *format, ...);
void microd_decl2(const char *format, ...);
void microd_decl3(const char *format, ...);
void microd_decl12(const char *format, ...);
void microd_decl23(const char *format, ...);
void microd_decl123(const char *format, ...);
char *comment1(const char *format, ...);
char *comment2(const char *format, ...);
void sinkImplements(md_fptr sink, ClassDeclaration* decl1, int prependComma);
//////////////////////////////////////////////////////////////////////////
struct MDState;
MDState *mds = NULL;
struct MDState
{
VarDeclaration *sthis;
MDState *prev;
Module *m;
Dsymbol *symbol;
/////////////////////
FuncDeclaration *getFunc()
{
MDState *bc = this;
for (; bc->prev; bc = bc->prev);
return (FuncDeclaration *)(bc->symbol);
}
/////////////////////
MDState(Module *m, Dsymbol *s)
{
autopop = 1;
push(m, s);
}
~MDState()
{
if (autopop)
pop();
}
private:
MDState *next;
int autopop;
MDState()
{
autopop = 0;
}
static void push(Module *m, Dsymbol *s)
{
MDState *x = new MDState;
x->next = mds;
mds = x;
mds->prev = NULL;
mds->m = m;
mds->symbol = s;
mds->sthis = NULL;
}
static void pop()
{
mds = mds->next;
}
};
//////////////////////////////////////////////////////////////////////////
void getEthis(md_fptr sink, Loc loc, FuncDeclaration *fd);
void callfunc(md_fptr sink, int directcall, Type *tret, Expression *ec, Type *ectype,
FuncDeclaration *fd, Type *t, Expression *ehidden, Expressions *arguments);
void escapeString(md_fptr sink, StringExp *se);
//////////////////////////////////////////////////////////////////////////
void microd_generate(Modules *modules)
{
for (size_t i = 0; i < modules->dim; i++)
{
Module *m = modules->tdata()[i];
if (global.params.verbose)
printf("microd gen %s\n", m->toChars());
m->toMicroD();
}
char *n = FileName::name((*global.params.objfiles)[0]);
File *mdfile = new File(FileName::forceExt(n, "js"));
mdfile->ref = 1;
buf1.writestring(buf2.toChars());
buf1.writestring(buf3.toChars());
buf1.writestring("if(_Dmain != null) _Dmain();\n");
mdfile->setbuffer(buf1.data, buf1.offset);
mdfile->writev();
}
//////////////////////////////////////////////////////////////////////////
void Module::toMicroD()
{
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->toMicroD();
}
while (xdeferred.dim != 0)
{
Dsymbol *s = xdeferred[0];
xdeferred.remove(0);
s->toMicroD();
}
}
//////////////////////////////////////////////////////////////////////////
void Dsymbol::toMicroD()
{
printf("ignored: %s [%s] %s\n", kind(), typeid(*this).name(), toChars());
assert(!isStructDeclaration());
}
void AttribDeclaration::toMicroD()
{
if(suppress_js_output)
return;
Dsymbols *d = include(NULL, NULL);
if (d)
{
for (size_t i = 0; i < d->dim; i++)
{
Dsymbol *s = (*d)[i];
s->toMicroD();
}
}
}
void SymbolExp::toMicroD(md_fptr sink) {
if(var)
var->toMicroD(sink);
}
//////////////////////////////////////////////////////////////////////////
void DelegateExp::toMicroD(md_fptr sink) {
if(!func)
return;
if(!func->isFuncLiteralDeclaration())
func->toMicroD(sink);
else
func->toMicroD();//sink);
}
void FuncDeclaration::toMicroD(md_fptr sink) {
if(suppress_js_output) return;
if(isNested())
toMicroD();
else {
if(linkage == LINKjs) {
AggregateDeclaration* parent = isThis();
char* name = NULL;
if(parent) {
name = parent->toChars();
// D considers these to be a part of the class, but we want a part of the object...
// it is important for at least the basics to work here to do feature detection of browsers
if(strcmp(name, "JSDocument") == 0) // HACK HACK HACK HACK
name = "document";
else if(strcmp(name, "JSWindow") == 0) // HACK
name = "window";
else {
//sink("__d_"); // to get to the class definition
//name = parent->mangle();
name = NULL;
}
}
// if it is a member, we have to sink that too...
if(name) {
sink(name);
sink(".");
sink(toChars());
} else {
sink(mangle());
}
} else
sink(mangle());
}
}
void FuncDeclaration::toMicroD()
{
if(suppress_js_output) return;
// Find module m for this function
Module *m = NULL;
for (Dsymbol *p = parent; p; p = p->parent)
{
m = p->isModule();
if (m)
break;
}
MDState xmds(m, this);
assert(type->ty == Tfunction);
md_fptr sink = µd_decl3;
/// functions without bodies shouldn't be there in JS
/// it is probably just a built in
if(!fbody) {
return;
}
TypeFunction *tf = (TypeFunction *)type;
// tf->next->toMicroD(sink);
sink("function ");
if(!isFuncLiteralDeclaration())
sink(mangle());
sink("(");
for (size_t i = 0; parameters && i < parameters->dim; i++)
{
if (i != 0)
sink(", ");
VarDeclaration *p = (*parameters)[i];
p->toMicroD(sink);
}
if (vthis)
{
mds->sthis = vthis;
if(isCtorDeclaration()) {
} else {
if (tf->parameters->dim)
sink(", ");
vthis->toMicroD(sink);
}
}
// Body
if (fbody)
{
sink(") {\n");
if(isCtorDeclaration() && vthis) {
/* JS actually constructs the object... */
sink("var ");
vthis->toMicroD(sink);
sink(" = this;\n"); // new Object();\n");
} else if(vthis) {
// fallback for regular javascript thingy
sink("if(!");
vthis->toMicroD(sink);
sink(") var ");
vthis->toMicroD(sink);
sink(" = this;\n");
}
fbody->toMicroD(sink);
sink("}\n");
}
else
sink(");\n");
}
void ScopeDsymbol::toMicroD() {
if(suppress_js_output) return;
for(unsigned i = 0; i < members->dim; i++) {
Dsymbol* s = (Dsymbol*) members->data[i];
if(s->isFuncDeclaration()) {
if(s->isFuncDeclaration()->parameters)
s->toMicroD();
else
printf("ignoring (a template definition?) %s\n", s->toPrettyChars()); // s->toMicroD();
}else
printf("ignoring non function %s\n", s->toChars());
}
}
void VarDeclaration::toMicroD()
{
if(suppress_js_output) return;
md_fptr sink = µd_decl23;
if(linkage == LINKjs) // don't put out things that are supposed to be in js
return;
type->toMicroD(sink);
sink(" ");
sink(mangle());
if (init)
{
microd_decl3(" = ");
init->toMicroD(µd_decl3);
}
sink(";\n");
}
void StructDeclaration::toMicroD()
{
if(suppress_js_output) return;
char *name = mangle();
md_fptr sink = µd_decl2;
sink("function __d_");
sink(name);
sink("() {\n");
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
if (Declaration *vd = s->isVarDeclaration())
{
vd->toMicroD(sink);
sink(";\n");
}
else if (FuncDeclaration *fd = s->isFuncDeclaration())
{
xdeferred.push(fd);
}
else
{
s->error(" %s not supported in MicroD", typeid(*this).name());
sink("null/*__dsymbol__*/;\n");
}
}
sink("}\n");
}
void sinkvirtual(md_fptr sink, ClassDeclaration* cd, FuncDeclaration* fd) {
// adds it to the vtable
sink("this.__d_vtbl[%d] = ", fd->vtblIndex);
fd->toMicroD(sink);
sink(";\n");
}
void sinkclassbase(md_fptr sink, ClassDeclaration* base) {
if(base == NULL)
return;
sinkclassbase(sink, base->baseClass);
// this will do reverse order so Object is the first one initialized
sink("__d_");
sink(base->mangle());
sink(".call(this);\n");
}
void ClassDeclaration::toMicroD()
{
if(suppress_js_output) return;
char *name = mangle();
md_fptr sink = µd_decl2;
// classes have constructors, so we don't need this kind of initializer. or do we?
sink("function __d_");
sink(name);
sink("(__d_constructor) {\n"); // constructor args are passed as variadic fyi
assert(this->baseclasses != NULL);
if(this->baseClass == NULL) {
// this is Object itself, so declare the vtable
sink("this.__d_vtbl = [];\n");
}
// call base classes too. this will set up the parent's initializers and the basic methods for inheritance
sinkclassbase(sink, this->baseClass);
sink("this.__d_vtbl.length = %d;\n", vtbl.dim); // preparing our own vtable to have the slots filled in later
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
if(s->suppress_js_output)
continue;
if (Declaration *vd = s->isVarDeclaration())
{
vd->toMicroD(sink);
sink(";\n");
}
else if (FuncDeclaration *fd = s->isFuncDeclaration())
{
// we also want to put it in this function as properties so overriding works...
xdeferred.push(fd);
if(fd->isVirtual()) {
sinkvirtual(sink, this, fd);
}
}
else if(AttribDeclaration* f = s->isAttribDeclaration()) {
Dsymbols *d = f->include(NULL, NULL);
if (d)
{
for (size_t i = 0; i < d->dim; i++)
{
Dsymbol *s = (*d)[i];
if(FuncDeclaration* fd = s->isFuncDeclaration()) {
xdeferred.push(fd);
if(fd->isVirtual()) {
sinkvirtual(sink, this, fd);
}
} else
s->toMicroD();
}
}
}
else
{
s->error("not supported in MicroD %s", typeid(*s).name());
//sink("__dsymbol__;\n");
}
}
// add some run time type information
sink("this.__d_classname = \"");
sink(toPrettyChars());
sink("\";\n");
sink("this.__d_mangle = \"");
sink(mangle());
sink("\";\n");
sink("this.__d_implements = [");
// it implements itself...
sink("\"");
sink(mangle());
sink("\"");
// and whatever else it inherits from
sinkImplements(sink, this, 1);
sink("];\n");
// now we have to call the constructor with the arguments given...
sink("return __d_construct.call(this, __d_constructor, arguments);");
sink("}\n");
}
void sinkImplements(md_fptr sink, ClassDeclaration* decl1, int prependComma) {
if(decl1->baseclasses)
for(unsigned a = 0; a < decl1->baseclasses->dim; a++) {
ClassDeclaration* decl = decl1->baseclasses->tdata()[a]->base;
if(decl) {
if(prependComma)
sink(", ");
sink("\"");
sink(decl->mangle());
sink("\"");
prependComma = 1;
sinkImplements(sink, decl, prependComma);
}
}
}
//////////////////////////////////////////////////////////////////////////
void Declaration::toMicroD(md_fptr sink)
{
error("Declaration %s not supported ('%s')", typeid(*this).name(), toChars());
sink("__Declaration__");
}
void FuncExp::toMicroD(md_fptr sink) {
if(fd)
fd->toMicroD();
}
void VarDeclaration::toMicroD(md_fptr sink)
{
if(!isParameter() && !isThis()) {
type->toMicroD(sink);
sink(" ");
}
if(isThis()) {
sink("this.");
}
sink(mangle());
if (init)
{
sink(" = ");
ExpInitializer *ie = init->isExpInitializer();
if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit))
{
Expression *ex = ((AssignExp *)ie->exp)->e2;
if (ex->op == TOKint64 && type->ty == Tstruct)
goto Ldefault;
else
ex->toMicroD(sink);
}
else if (ie->exp->op == TOKint64 && type->ty == Tstruct)
goto Ldefault;
else
init->toMicroD(sink);
}
else if (!isParameter() && !isThis())
{
sink(" = ");
Ldefault:
type->defaultInitLiteral(loc)->toMicroD(sink);
}
if(!init && isThis()) {
sink(" = ");
type->defaultInitLiteral(loc)->toMicroD(sink);
}
}
void ArrayLiteralExp::toMicroD(md_fptr sink) {
sink("[");
if(elements)
for(unsigned i = 0; i < elements->dim; i++) {
if(i != 0)
sink(", ");
Expression* e = (Expression*) elements->data[i];
e->toMicroD(sink);
}
sink("]");
}
//////////////////////////////////////////////////////////////////////////
void Type::toMicroD(md_fptr sink)
{
// error(0, "Type '%s' not supported in MicroD", toChars());
sink("var");
}
void TypeArray::toMicroD(md_fptr sink)
{
sink("var");
}
void TypeBasic::toMicroD(md_fptr sink)
{
sink("var");
/*
switch(ty)
{
case Tvoid:
case Tint8:
case Tuns8:
case Tint16:
case Tuns16:
case Tint32:
case Tuns32:
sink("__d_%s", toChars());
return;
default:
Type::toMicroD(sink);
}
*/
}
void TypeStruct::toMicroD(md_fptr sink)
{
sink("var");
}
//////////////////////////////////////////////////////////////////////////
void Parameter::toMicroD(md_fptr sink)
{
//type->toMicroD(sink);
//sink(" ");
sink(ident->toChars());
if (defaultArg)
{
sink(" = ");
defaultArg->toMicroD(sink);
}
}
//////////////////////////////////////////////////////////////////////////
void Expression::toMicroD(md_fptr sink)
{
error("Expression %s not supported in MicroD ('%s')", typeid(*this).name(), toChars());
//sink(toChars());
sink("__expression__");
}
void argsToMicroD(md_fptr sink, Expressions* arguments)
{
if (arguments)
{
for (size_t i = 0; i < arguments->dim; i++)
{ Expression *arg = arguments->tdata()[i];
if (arg)
{ if (i)
sink(",");
arg->toMicroD(sink);
}
}
}
}
void NewExp::toMicroD(md_fptr sink) {
sink("new ");
/* // js has no placement new or anything
if (newargs && newargs->dim)
{
sink("(");
argsToMicroD(sink, newargs);
sink(")");
}
*/
//sink(newtype->toChars()); // this isn't toMicroD because we want the type name, not var, to construct
if(!member) {
// FIXME: what if it is a custom D type without a constructor?
Dsymbol* sym = type->toDsymbol(NULL);
if(sym != NULL)
sink(sym->toChars());
// sink(type->mangle());
sink("()");
return;
}
ClassDeclaration* classOf = member->isMember2()->isClassDeclaration();
assert(classOf);
sink("__d_");
sink(classOf->mangle()); // the class we want
sink("(");
if(member)
sink(member->mangle()); // constructor
else
sink("null");
if (arguments && arguments->dim)
{
sink(",");
argsToMicroD(sink, arguments); // constructor arguments
}
sink(")");
}
void IndexExp::toMicroD(md_fptr sink) {
e1->toMicroD(sink);
sink("[");
e2->toMicroD(sink);
sink("]");
}
void SliceExp::toMicroD(md_fptr sink) {
sink("(");
e1->toMicroD(sink);
sink(")");
sink(".slice(");
if(upr) {
upr->toMicroD(sink);
} else {
sink("0");
}
if(lwr) {
sink(",");
lwr->toMicroD(sink);
} else {
if(lengthVar) {
sink(",");
lengthVar->toMicroD(sink);
}
}
sink(")");
}
void IntegerExp::toMicroD(md_fptr sink)
{
dinteger_t v = toInteger();
sink("%d", v);
}
void DeclarationExp::toMicroD(md_fptr sink)
{
Declaration *d = declaration->isDeclaration();
assert(d);
d->toMicroD(sink);
}
void BreakStatement::toMicroD(md_fptr sink) {
if(ident) {
error("labeled break not supported");
} else
sink("break;");
}
void ContinueStatement::toMicroD(md_fptr sink) {
if(ident) {
error("labeled continue not supported");
} else
sink("continue;");
}
void ThrowStatement::toMicroD(md_fptr sink) {
sink("throw ");
exp->toMicroD(sink);
sink(";");
}
void TryCatchStatement::toMicroD(md_fptr sink) {
sink("try {\n");
if(body)
body->toMicroD(sink);
sink("}\n");
static int catchCount = 0;
if(catches) {
sink("catch (__d_exception_%d) {\n", ++catchCount);
for(unsigned i = 0; i < catches->dim; i++) {
Catch* c = (Catch*) catches->data[i];
if(c) {
Dsymbol* t1 = c->type->toDsymbol(NULL);
assert(t1);
ClassDeclaration* t = t1->isClassDeclaration();
assert(t);
sink("var %s = __d_dynamic_cast(__d_exception_%d, \"%s\");\n", c->var->mangle(), catchCount, t->mangle());
sink("if(%s) {\n", c->var->mangle());
c->handler->toMicroD(sink);
sink("}");
}
}
sink("}\n");
}
}
void UnaExp::toMicroD(md_fptr sink) {
switch(op) {
case TOKneg:
case TOKplusplus:
case TOKminusminus:
case TOKnot:
sink(Token::toChars(op));
sink("(");
e1->toMicroD(sink);
sink(")");
break;
default:
Expression::toMicroD(sink);
break;
}
}
void PostExp::toMicroD(md_fptr sink) {
switch(op) {
case TOKplusplus:
case TOKminusminus:
sink("(");
e1->toMicroD(sink);
sink(")");
sink(Token::toChars(op));
break;
default:
Expression::toMicroD(sink);
break;
}
}
void ArrayLengthExp::toMicroD(md_fptr sink) {
sink("(");
e1->toMicroD(sink);
sink(".length");
sink(")");
}
void IdentityExp::toMicroD(md_fptr sink) {
sink("(");
e1->toMicroD(sink);
if(op == TOKidentity)
sink("===");
else // must be !is
sink("!==");
e2->toMicroD(sink);
sink(")");
}
void BinExp::toMicroD(md_fptr sink)
{
switch (op)
{
case TOKlt:
case TOKle:
case TOKgt:
case TOKge:
case TOKequal:
case TOKnotequal:
case TOKadd:
case TOKmin:
case TOKmul:
case TOKdiv:
case TOKand:
case TOKor:
case TOKxor:
case TOKaddass:
case TOKminass:
case TOKmulass:
case TOKdivass:
case TOKandass:
case TOKorass:
case TOKxorass:
case TOKassign:
sink("(");
e1->toMicroD(sink);
sink(" %s ", Token::toChars(op));
e2->toMicroD(sink);
sink(")");
break;
case TOKcatass:
e1->toMicroD(sink);
sink(" = (");
e1->toMicroD(sink);
sink(".concat(");
e2->toMicroD(sink);
sink("))");
break;
break;
case TOKcat:
sink("(");
e1->toMicroD(sink);
sink(".concat(");
e2->toMicroD(sink);
sink("))");
break;
default:
Expression::toMicroD(sink);
break;
}
}
void CallExp::toMicroD(md_fptr sink)
{
Type *t1 = e1->type->toBasetype();
Type *ectype = t1;
Expression *ec;
FuncDeclaration *fd;
int directcall = 0;
Expression *ehidden = NULL;
if (e1->op == TOKdotvar && t1->ty != Tdelegate)
{
DotVarExp *dve = (DotVarExp *)e1;
fd = dve->var->isFuncDeclaration();
Expression *ex = dve->e1;
while (1)
{
switch (ex->op)
{
case TOKsuper: // super.member() calls directly
case TOKdottype: // type.member() calls directly
directcall = 1;
break;
case TOKcast:
ex = ((CastExp *)ex)->e1;
continue;
default:
//ex->dump(0);
break;
}
break;
}
ec = dve->e1;
ectype = dve->e1->type->toBasetype();
}
else if (e1->op == TOKvar)
{
fd = ((VarExp *)e1)->var->isFuncDeclaration();
ec = e1;
}
else
{
ec = e1;
}
if(fd->linkage == LINKjs)
directcall = 1;
callfunc(sink, directcall, type, ec, ectype, fd, t1, ehidden, arguments);
}
void DotVarExp::toMicroD(md_fptr sink)
{
sink("(");
e1->toMicroD(sink);
sink(").");
if(var->linkage == LINKjs) {
char* name = var->toChars();
int len = strlen(name);
if(len > 5 && name[0] == '_' && name[1] == '_' && name[2] == 'j' && name[3] == 's' && name[4] == '_') {
name += 5;
}
sink(name);
} else
sink(var->mangle());
}
void VarExp::toMicroD(md_fptr sink)
{
char* name = var->toChars();
int len = strlen(name);
if(len > 5 && name[0] == '_' && name[1] == '_' && name[2] == 'j' && name[3] == 's' && name[4] == '_') {
// these correspond directly to javascript keywords in some way
if(strcmp(name, "__js_array_literal") == 0)
sink("[]");
else if(strcmp(name, "__js_object_literal") == 0)
sink("{}");
else
sink(name + 5); // probably a keyword or something
} else
sink(var->mangle());
}
void CastExp::toMicroD(md_fptr sink)
{
// there's no such thing as a cast in JS
// FIXME: but what about dynamic class casts?
assert(to);
ClassDeclaration* classOf = to->isClassHandle();
if(classOf)
sink("__d_dynamic_cast");
sink("(");
e1->toMicroD(sink);
if(classOf) {
sink(", \"");
sink(classOf->mangle());
sink("\"");
}
sink(")");
}
void AssertExp::toMicroD(md_fptr sink)
{