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DeclarationExpressions.cpp
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#include "Expressions.h"
#include "Compiler.h"
#include "Parser.h"
#include "Types/Function.h"
#include "DeclarationExpressions.h"
using namespace Jet;
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/DIBuilder.h>
#include <llvm/IR/DerivedTypes.h>
Type* FunctionExpression::TypeCheck(CompilerContext* context)
{
bool is_lambda = name.text.length() == 0;
if (this->captures)
is_lambda = false;
//if we have specifier we are not lambda, just inline function
//need to change context
CompilerContext* nc = new CompilerContext(context->root, context);
nc->function = new Function("um", is_lambda);
if (this->name.text.length() == 0)
{
context->CurrentToken(&this->ret_type);
nc->function->return_type = context->root->LookupType(this->ret_type.text, false);
//ok return type, im a lambda
std::vector<std::pair<Type*, std::string>> argsv;
for (auto ii : *this->args)
argsv.push_back({ context->root->LookupType(ii.type.text), ii.name.text });
std::vector<Type*> args;
for (auto ii : argsv)
args.push_back(ii.first);
auto ret = context->root->LookupType(this->ret_type.text, false);
if (is_lambda == false)
return context->root->GetFunctionType(ret, args);
else
return context->root->LookupType("function<" + context->root->GetFunctionType(ret, args)->ToString() + ">");
}
if (auto str = dynamic_cast<StructExpression*>(this->parent))
{
auto typ = context->root->LookupType(str->GetName(), false)->GetPointerType()->GetPointerType();
nc->TCRegisterLocal("this", typ);
}
else if (this->Struct.text.length())
{
auto typ = context->root->LookupType(this->Struct.text, false);// ->GetPointerType()->GetPointerType();
nc->TCRegisterLocal("this", typ->GetPointerType()->GetPointerType());
//check if im extending a trait, if so add any relevant templates
//todo: lets not typecheck this yet, its being troublesome
//the main issue is that the template parameters of the traits are invalid types
//not sure how to resolve this
return 0;
//lets not typecheck these yet....
if (typ->base->base->type == Types::Trait)
context->root->ns = typ->trait;
else
context->root->ns = typ->data;
}
context->CurrentToken(&this->ret_type);
if (this->templates == 0)
{
nc->function->return_type = context->root->LookupType(this->ret_type.text, false);
for (auto ii : *this->args)
nc->TCRegisterLocal(ii.name.text, context->root->LookupType(ii.type.text)->GetPointerType());
}
if (this->is_generator)
{
auto func = context->root->ns->GetFunction(this->GetRealName());
auto str = func->return_type;
//add _context
nc->TCRegisterLocal("_context", str->GetPointerType()->GetPointerType());
nc->local_reg_callback = [&](const std::string& name, Type* ty)
{
str->data->struct_members.push_back({ name, ty->base->name, ty->base });
};
this->block->TypeCheck(nc);
if (this->ret_type.text == "void")
;
else if (nc->function->has_return == false && this->is_generator == false)
context->root->Error("Function must return a value!", token);
}
if (this->Struct.text.length())
context->root->ns = context->root->ns->parent;
nc->local_reg_callback = [&](const std::string& name, Type* ty) {};
//delete temporary things
delete nc->function;
delete nc;
return 0;
}
unsigned int uuid = 5;
std::string FunctionExpression::GetRealName()
{
std::string fname;
if (name.text.length() > 0)
fname = name.text;
else
fname = "_lambda_id_" + std::to_string(uuid++);// Todo fix this returning a different value each time
auto Struct = dynamic_cast<StructExpression*>(this->parent);
if (this->Struct.text.length() > 0)
return "__" + this->Struct.text + "_" + fname;
else
return Struct ? "__" + Struct->GetName() + "_" + fname : fname;
}
CValue FunctionExpression::Compile(CompilerContext* context)
{
auto Struct = dynamic_cast<StructExpression*>(this->parent) ? dynamic_cast<StructExpression*>(this->parent)->GetName() : this->Struct.text;
context->current_token = &this->token;
//need to not compile if template or trait
if (this->templates)
{
for (auto ii : *this->templates)//make sure traits are valid
{
auto iter = context->root->traits.find(ii.first.text);
if (iter == context->root->traits.end() || iter->second->valid == false)
context->root->Error("Trait '" + ii.first.text + "' is not defined", ii.first);
}
return CValue();
}
if (Struct.length())
{
auto iter = context->root->LookupType(Struct, false);
if (iter->type == Types::Trait)
return CValue();
}
return this->DoCompile(context);
}
#include <llvm/IR/BasicBlock.h>
CValue FunctionExpression::DoCompile(CompilerContext* context)
{
context->CurrentToken(&token);
bool is_lambda = name.text.length() == 0;
if (this->captures)
is_lambda = false;//todo this seems wrong...
//if we have specifier we are not lambda, just inline function
//build list of types of vars
std::vector<std::pair<Type*, std::string>> argsv;
auto struct_name = dynamic_cast<StructExpression*>(this->parent) ? dynamic_cast<StructExpression*>(this->parent)->GetName() : this->Struct.text;
//insert the 'this' argument if I am a member function
if (struct_name.length() > 0)
{
auto type = context->root->LookupType(struct_name + "*");
argsv.push_back({ type, "this" });
}
//add the context pointer as an argument if this is a generator
if (this->is_generator)
{
auto func = context->root->ns->GetFunction(this->GetRealName());
auto str = func->return_type;
str->Load(context->root);
argsv.push_back({ str->GetPointerType(), "_context" });
}
auto rp = context->root->builder.GetInsertBlock();
auto dp = context->root->builder.getCurrentDebugLocation();
if (is_lambda)
{
//get parent
auto call = dynamic_cast<CallExpression*>(this->parent);
//find my type
if (call)
{
//look for me in the args
if (call->left == this)
context->root->Error("Cannot imply type of lambda with the args of its call", *context->current_token);
unsigned int i = dynamic_cast<NameExpression*>(call->left) ? 0 : 1;
for (; i < call->args->size(); i++)
{
if ((*call->args)[i].first == this)
break;
}
//todo: ok, this is the wrong way to get the function arg type needed
//CValue fun = call->left->Compile(context);
Type* type = call->left->TypeCheck(context); //fun.type->function->args[i];
if (type->type == Types::Function)
{
//do type inference
int i2 = 0;
for (auto& ii : *this->args)
{
if (ii.type.text.length() == 0)//do type inference
ii.type.text = type->function->args[i2]->ToString();
i2++;
}
if (this->ret_type.text.length() == 0)//infer return type
this->ret_type.text = type->function->return_type->ToString();
}
else if (type->type == Types::Struct && type->data->template_base->name == "function")
{
//do type inference
auto fun = type->data->template_args[0]->function;
int i2 = 0;
for (auto& ii : *this->args)
{
if (ii.type.text.length() == 0)//do type inference
ii.type.text = fun->args[i2]->ToString();
i2++;
}
if (this->ret_type.text.length() == 0)//infer return type
this->ret_type.text = fun->return_type->ToString();
}
}
else
{
for (auto ii : *this->args)
if (ii.type.text.length() == 0)
context->root->Error("Lambda type inference only implemented for function calls", *context->current_token);
if (this->ret_type.text.length() == 0)
context->root->Error("Lambda type inference only implemented for function calls", *context->current_token);
}
}
for (auto ii : *this->args)
argsv.push_back({ context->root->LookupType(ii.type.text), ii.name.text });
context->CurrentToken(&this->ret_type);
// Determine return type
Type* ret;
if (this->is_generator)
ret = context->root->BoolType;
else
ret = context->root->LookupType(this->ret_type.text);
// Build lambda data if we are one
llvm::Value* lambda = 0;
Type* lambda_type = 0;
llvm::StructType* storage_t = 0;
if (is_lambda)
{
//allocate the function object
std::vector<Type*> args;
for (auto ii : argsv)
args.push_back(ii.first);
lambda_type = context->root->LookupType("function<" + context->root->GetFunctionType(ret, args)->ToString() + ">");
lambda = context->root->builder.CreateAlloca(lambda_type->GetLLVMType());
storage_t = llvm::StructType::get(context->root->context, {});
argsv.push_back({ context->root->CharPointerType, "_capture_data" });
}
// Get or create the relevant function CompilerContext
CompilerContext* function_context;
if (this->is_generator)
{
function_context = argsv.front().first->base->data->functions.find("MoveNext")->second->context;
function_context->function->Load(context->root);
llvm::BasicBlock *bb = llvm::BasicBlock::Create(context->root->context, "entry", function_context->function->f);
context->root->builder.SetInsertPoint(bb);
function_context->function->is_generator = true;
}
else
{
function_context = context->AddFunction(this->GetRealName(), ret, argsv, struct_name.length() > 0 ? argsv[0].first->base : 0, is_lambda);// , this->varargs);
}
function_context->function->lambda.storage_type = storage_t;
context->root->current_function = function_context;
function_context->function->Load(context->root);
function_context->SetDebugLocation(this->token);
//alloc args
auto AI = function_context->function->f->arg_begin();
if (function_context->function->return_type->type == Types::Struct)
{
AI++;
}
for (unsigned i = 0, e = argsv.size(); i != e; ++i, ++AI)
{
// Create an alloca for this variable.
if (i > 0 && this->is_generator)
continue;
auto arg_name = argsv[i].second;
llvm::IRBuilder<> TmpB(&function_context->function->f->getEntryBlock(), function_context->function->f->getEntryBlock().begin());
//need to alloca pointer to struct if this is a struct type
llvm::AllocaInst* Alloca = TmpB.CreateAlloca(argsv[i].first->GetLLVMType(), 0, arg_name);
llvm::Value* storeval = AI;
if (argsv[i].first->type == Types::Struct)
storeval = function_context->root->builder.CreateLoad(AI);
// Store the initial value into the alloca.
function_context->root->builder.CreateStore(storeval, Alloca);
AI->setName(arg_name);
//insert debug declarations
auto local = context->root->debug->createAutoVariable(function_context->function->scope, arg_name,
context->root->debug_info.file, this->token.line,
argsv[i].first->GetDebugType(context->root));
llvm::Instruction* call = context->root->debug->insertDeclare(Alloca, local, context->root->debug->createExpression(),
llvm::DebugLoc::get(this->token.line, this->token.column, function_context->function->scope),
context->root->builder.GetInsertBlock());
call->setDebugLoc(llvm::DebugLoc::get(this->token.line, this->token.column, function_context->function->scope));
// Add arguments to variable symbol table.
function_context->RegisterLocal(arg_name, CValue(argsv[i].first->GetPointerType(), Alloca));
}
llvm::BasicBlock* yieldbb;//location of starting point in generator function
if (this->is_generator)
{
//compile the start code for a generator function
auto data = function_context->Load("_context");
//add arguments
int i = 0;
for (auto ii : *this->args)
{
auto ptr = data.val;
auto val = function_context->root->builder.CreateGEP(ptr, { function_context->root->builder.getInt32(0), function_context->root->builder.getInt32(2 + i++) });
function_context->RegisterLocal(ii.name.text, CValue(function_context->root->LookupType(ii.type.text)->GetPointerType(), val));
}
//add local vars
for (unsigned int i = 2 + this->args->size(); i < data.type->base->data->struct_members.size(); i++)
{
auto gep = context->root->builder.CreateGEP(data.val, { context->root->builder.getInt32(0), context->root->builder.getInt32(i) });
function_context->function->generator.variable_geps.push_back(gep);
}
//branch to the continue point
auto br = function_context->root->builder.CreateGEP(data.val, { context->root->builder.getInt32(0), context->root->builder.getInt32(0) });
auto loc = function_context->root->builder.CreateLoad(br);
auto ibr = function_context->root->builder.CreateIndirectBr(loc, 10);//todo this number may need to be different
function_context->function->generator.ibr = ibr;
//add new bb
yieldbb = llvm::BasicBlock::Create(context->context, "yield", function_context->function->f);
ibr->addDestination(yieldbb);
function_context->root->builder.SetInsertPoint(yieldbb);
}
block->Compile(function_context);
//check for return, and insert one or error if there isnt one
if (function_context->function->is_generator)
function_context->root->builder.CreateRet(function_context->root->builder.getInt1(false));//signal we are gone generating values
else if (function_context->function->f->getBasicBlockList().back().getTerminator() == 0)
if (ret->type == Jet::Types::Void)// Implicit return void at end to satisfy llvm
function_context->Return(CValue());
else
context->root->Error("Function must return a value!", token);
//remove instructions after the first terminator in a block to prevent issues
for (auto ii = function_context->function->f->getBasicBlockList().begin(); ii != function_context->function->f->getBasicBlockList().end(); ii++)
{
bool returned = false;
for (auto inst = ii->begin(); inst != ii->end();)
{
if (returned == true)
{
auto temp = inst.getNodePtr();
inst++;
temp->getIterator()->eraseFromParent();//this could be broken
}
else if (inst->isTerminator())
{
returned = true;
inst++;
}
else
{
inst++;
}
}
}
if (this->is_generator)
{
//compile the other function necessary for an iterator
auto func = context->AddFunction(this->GetRealName(), 0, { argsv.front() }, struct_name.length() > 0 ? argsv[0].first : 0, is_lambda);
auto str = func->function->return_type;
context->root->current_function = func;
func->function->Load(context->root);
//alloca the new context
auto alloc = context->root->builder.CreateAlloca(str->GetLLVMType());
//set the branch location to the start
auto ptr = context->root->builder.CreateGEP(alloc, { context->root->builder.getInt32(0), context->root->builder.getInt32(0) });
auto val = llvm::BlockAddress::get(yieldbb);
context->root->builder.CreateStore(val, ptr);
//ok, need to use the ret val stuff
//store arguments into context
if (argsv.size() > 1)
{
auto AI = func->function->f->arg_begin();
AI++;//skip the return value argument
for (unsigned int i = 1; i < argsv.size(); i++)
{
auto ptr = context->root->builder.CreateGEP(alloc, { context->root->builder.getInt32(0), context->root->builder.getInt32(2 + i - 1) });
context->root->builder.CreateStore(AI++, ptr);
}
}
//then return the newly created iterator object by storing it into the first arg
auto sptr = context->root->builder.CreatePointerCast(alloc, context->root->CharPointerType->GetLLVMType());
auto dptr = context->root->builder.CreatePointerCast(func->function->f->arg_begin(), context->root->CharPointerType->GetLLVMType());
context->root->builder.CreateMemCpy(dptr, sptr, str->GetSize(), 1);
context->root->builder.CreateRetVoid();
//now compile reset function
{
auto reset = argsv.front().first->base->data->functions.find("Reset")->second->context;
context->root->current_function = reset;
reset->function->Load(reset->root);
llvm::BasicBlock *bb = llvm::BasicBlock::Create(context->root->context, "entry", reset->function->f);
context->root->builder.SetInsertPoint(bb);
auto self = reset->function->f->arg_begin();
//set the branch location back to start
auto ptr = context->root->builder.CreateGEP(self, { context->root->builder.getInt32(0), context->root->builder.getInt32(0) });
auto val = llvm::BlockAddress::get(yieldbb);
context->root->builder.CreateStore(val, ptr);
context->root->builder.CreateRetVoid();
}
//compile current function
{
auto current = argsv.front().first->base->data->functions.find("Current")->second->context;
context->root->current_function = current;
current->function->Load(current->root);
llvm::BasicBlock *bb = llvm::BasicBlock::Create(context->root->context, "entry", current->function->f);
context->root->builder.SetInsertPoint(bb);
//return the current value
auto self = current->function->f->arg_begin();
auto ptr = context->root->builder.CreateGEP(self, { context->root->builder.getInt32(0), context->root->builder.getInt32(1) });
context->root->builder.CreateRet(context->root->builder.CreateLoad(ptr));
}
}
//reset insertion point to where it was before (for lambdas and template compilation)
context->root->builder.SetCurrentDebugLocation(dp);
if (rp)
context->root->builder.SetInsertPoint(rp);
context->root->current_function = context;
//store the lambda value
if (lambda)
{
function_context->WriteCaptures(lambda);
auto ptr = context->root->builder.CreateGEP(lambda, { context->root->builder.getInt32(0), context->root->builder.getInt32(0) }, "name");
ptr = context->root->builder.CreatePointerCast(ptr, function_context->function->f->getType()->getPointerTo());
context->root->builder.CreateStore(function_context->function->f, ptr);
}
context->CurrentToken(&this->token);
if (lambda)//return the lambda if we are one
return CValue(lambda_type, context->root->builder.CreateLoad(lambda), lambda);
else
return CValue(function_context->function->GetType(context->root), function_context->function->f);
}
void FunctionExpression::CompileDeclarations(CompilerContext* context)
{
context->CurrentToken(&this->token);
std::string fname = name.text;
if (name.text.length() == 0)
return;//dont compile expression for lambdas
bool advlookup = true;
Function* fun = new Function(this->GetRealName(), false);
fun->expression = this;
fun->is_virtual = (this->token.type == TokenType::Virtual);
context->root->functions.push_back(fun);
auto str = dynamic_cast<StructExpression*>(this->parent) ? dynamic_cast<StructExpression*>(this->parent)->GetName() : this->Struct.text;
if (auto attr = dynamic_cast<AttributeExpression*>(this->parent))
{
//add the attribute to the Function
if (attr->name.text == "stdcall")
fun->calling_convention = CallingConvention::StdCall;
else if (attr->name.text == "thiscall")
fun->calling_convention = CallingConvention::ThisCall;
else if (attr->name.text == "fastcall")
fun->calling_convention = CallingConvention::FastCall;
}
bool is_trait = false;
if (str.length() > 0)
{
auto type = context->root->LookupType(str, false);
if (type->type == Types::Trait)
{
type->Load(context->root);
type->trait->extension_methods.insert({ fname, fun });
is_trait = true;
}
else
{
type->data->functions.insert({ fname, fun });
advlookup = !type->data->template_args.size();
}
}
else
{
context->root->ns->members.insert({ fname, fun });
}
if (is_generator)
{
//build data about the generator context struct
Type* str = new Type;
str->name = this->GetRealName() + "_yielder_context";
str->type = Types::Struct;
str->data = new Jet::Struct;
str->data->name = str->name;
str->data->parent_struct = 0;
str->data->parent = context->root->ns;
context->root->ns->members.insert({ str->name, str });
//add default iterator methods, will fill in function later
{
auto func = new Function(this->GetRealName() + "_generator", name.text.length() == 0);
func->return_type = context->root->BoolType;
func->arguments = { { 0, "_context" } };
func->arguments.resize(1);
context->root->AdvanceTypeLookup(&func->arguments[0].first, str->name + "*", &this->ret_type);
auto n = new CompilerContext(context->root, context);
n->function = func;
func->context = n;
context->root->ns->members.insert({ func->name, func });
str->data->functions.insert({ "MoveNext", func });
}
{
auto func = new Function(this->GetRealName() + "_yield_reset", name.text.length() == 0);
func->return_type = &VoidType;
func->arguments = { { 0, "_context" } };
func->arguments.resize(1);
context->root->AdvanceTypeLookup(&func->arguments[0].first, str->name + "*", &this->ret_type);
auto n = new CompilerContext(context->root, context);
n->function = func;
func->context = n;
context->root->ns->members.insert({ func->name, func });
str->data->functions.insert({ "Reset", func });
}
{
auto func = new Function(this->GetRealName() + "_generator_current", name.text.length() == 0);
func->return_type = &VoidType;
context->root->AdvanceTypeLookup(&func->return_type, this->ret_type.text, &this->ret_type);
func->arguments = { { 0, "_context" } };
func->arguments.resize(1);
context->root->AdvanceTypeLookup(&func->arguments[0].first, str->name + "*", &this->ret_type);
auto n = new CompilerContext(context->root, context);
n->function = func;
func->context = n;
context->root->ns->members.insert({ func->name, func });
str->data->functions.insert({ "Current", func });
}
//add the position and return variables to the context
str->data->struct_members.push_back({ "position", "char*", context->root->CharPointerType });
str->data->struct_members.push_back({ "return", this->ret_type.text, context->root->LookupType(this->ret_type.text) });
//add arguments to context
for (auto ii : *this->args)
str->data->struct_members.push_back({ ii.name.text, ii.type.text, context->root->LookupType(ii.type.text) });
str->ns = context->root->ns;
//DO NOT LOAD THIS UNTIL COMPILATION, IN FACT DONT LOAD ANYTHING
fun->return_type = str;
}
else if (is_trait)
fun->return_type = 0;
else if (advlookup)
context->root->AdvanceTypeLookup(&fun->return_type, this->ret_type.text, &this->ret_type);
else
fun->return_type = context->root->LookupType(this->ret_type.text, false);
fun->arguments.reserve(this->args->size() + (str.length() ? 1 : 0));
//add the this pointer argument if this is a member function
if (str.length() > 0)
{
fun->arguments.push_back({ 0, "this" });
if (is_trait == false && advlookup)
context->root->AdvanceTypeLookup(&fun->arguments.back().first, str + "*", &this->token);
else if (is_trait == false)
fun->arguments.back().first = context->root->LookupType(str + "*", false);
}
//add arguments to new function
for (auto ii : *this->args)
{
if (this->templates)//just set type = 0 if it is one of the templates
{
bool done = false;
for (auto temp : *this->templates)
{
//get the name of the variable
unsigned int subl = 0;
for (; subl < ii.type.text.length(); subl++)
{
if (!IsLetter(ii.type.text[subl]))
break;
}
//check if it refers to same type
std::string sub = ii.type.text.substr(0, subl);
if (temp.second.text == sub)
{
//insert dummy types
fun->arguments.push_back({ new Type(ii.type.text, Types::Invalid), ii.name.text });
done = true;
break;
}
}
if (done)
continue;
}
Type* type = 0;
if (!advlookup)//else
type = context->root->LookupType(ii.type.text);
fun->arguments.push_back({ type, ii.name.text });
if (advlookup && is_trait == false)
context->root->AdvanceTypeLookup(&fun->arguments.back().first, ii.type.text, &this->token);
}
//add templates to new function
if (this->templates)
{
for (auto ii : *this->templates)
fun->templates.push_back({ context->root->LookupType(ii.first.text), ii.second.text });
}
}
CValue ExternExpression::Compile(CompilerContext* context)
{
return CValue();
}
void ExternExpression::CompileDeclarations(CompilerContext* context)
{
std::string fname = name.text;
Function* fun = new Function(fname, false);
if (auto attr = dynamic_cast<AttributeExpression*>(this->parent))
{
//add the attribute to the Function
if (attr->name.text == "stdcall")
fun->calling_convention = CallingConvention::StdCall;
else if (attr->name.text == "thiscall")
fun->calling_convention = CallingConvention::ThisCall;
else if (attr->name.text == "fastcall")
fun->calling_convention = CallingConvention::FastCall;
}
context->root->AdvanceTypeLookup(&fun->return_type, this->ret_type.text, &this->ret_type);
// Reserve space for the arguments + this if we apply to a struct
fun->arguments.reserve(this->args->size() + (Struct.length() > 0 ? 1 : 0));
fun->f = 0;
if (Struct.length() > 0)
{
fun->name = "__" + Struct + "_" + fname;//mangled name
//add to struct
auto ii = context->root->TryLookupType(Struct);
if (ii == 0)//its new
{
context->root->Error("Not implemented!", token);
//str = new Type;
//context->root->types[this->name] = str;
}
else
{
if (ii->type != Types::Struct)
context->root->Error("Cannot define an extern function for a type that is not a struct", token);
ii->data->functions.insert({ fname, fun });
}
fun->arguments.push_back({ ii->GetPointerType(), "this" });
}
else
{
context->root->ns->members.insert({ fname, fun });
}
//look up arg types
for (auto ii : *this->args)
{
fun->arguments.push_back({ 0, ii.name.text });
context->root->AdvanceTypeLookup(&fun->arguments.back().first, ii.type.text, &this->token);
}
}
CValue LetExpression::Compile(CompilerContext* context)
{
context->CurrentToken(&(*_names)[0].second);
// If im in global scope, add a global variable
if (this->parent->parent == 0)
{
auto type = context->root->LookupType(this->_names->front().first.text);
//should I add a constructor?
llvm::Constant* cval = 0;
if (this->_right && this->_right->size() > 0)
{
auto val = this->_right->front().second->Compile(context);
cval = llvm::dyn_cast<llvm::Constant>(val.val);
if (cval == 0)
context->root->Error("Cannot instantiate global with non constant value", token);
}
if (this->_names->front().first.text.back() == ']')
{
std::string len = this->_names->front().first.text;
len = len.substr(len.find_first_of('[') + 1);
context->root->AddGlobal(this->_names->front().second.text, type->base, std::atoi(len.c_str()));
}
else
{
context->root->AddGlobal(this->_names->front().second.text, type, 0, cval);
}
return CValue();
}
bool needs_destruction = false;
int i = 0;
for (auto ii : *this->_names) {
auto aname = ii.second.text;
Type* type = 0;
CValue val;
llvm::AllocaInst* Alloca = 0;
if (ii.first.text.length())
{
context->CurrentToken(&ii.first);
type = context->root->LookupType(ii.first.text);
context->CurrentToken(&(*_names)[0].second);
if (this->_right)
val = (*this->_right)[i++].second->Compile(context);
}
else if (this->_right)
{
val = (*this->_right)[i++].second->Compile(context);
type = val.type;
}
if (context->function->is_generator)// Add arguments to variable symbol table.
{
//find the already added type with the same name
auto ty = context->function->arguments[0].first->base;
auto var_ptr = context->function->generator.variable_geps[context->function->generator.var_num++];
if (this->_right)
{
val = context->DoCast(type, val);
context->root->builder.CreateStore(val.val, var_ptr);
}
//output debug info
llvm::DIFile* unit = context->root->debug_info.file;
type->Load(context->root);
llvm::DILocalVariable* D = context->root->debug->createAutoVariable(context->function->scope, aname, unit, ii.second.line,
type->GetDebugType(context->root));
llvm::Instruction *Call = context->root->debug->insertDeclare(
var_ptr, D, context->root->debug->createExpression(), llvm::DebugLoc::get(this->token.line, this->token.column, context->function->scope), context->root->builder.GetInsertBlock());
Call->setDebugLoc(llvm::DebugLoc::get(ii.second.line, ii.second.column, context->function->scope));
//still need to do store
context->RegisterLocal(aname, CValue(type->GetPointerType(), var_ptr));
continue;
}
else if (ii.first.text.length() > 0)//type was specified
{
context->CurrentToken(&ii.first);
type = context->root->LookupType(ii.first.text);
auto TheFunction = context->function->f;
llvm::IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
TheFunction->getEntryBlock().begin());
if (type->type == Types::Struct && type->data->templates.size() > 0)
context->root->Error("Missing template arguments for type '" + type->ToString() + "'", ii.first);
else if (type->type == Types::InternalArray)
{
if (this->_right)
{
context->root->Error("Cannot assign to a sized array type!", ii.second);
}
needs_destruction = true;
Alloca = TmpB.CreateAlloca(type->GetLLVMType(), TmpB.getInt32(1), aname);
}
else if (type->type == Types::Array)
{
//if (type->size)
// needs_destruction = true;
int length = 0;// type->size;
auto str_type = context->root->GetArrayType(type->base);
//type = str_type;
//alloc the struct for it
Alloca = TmpB.CreateAlloca(str_type->GetLLVMType(), TmpB.getInt32(1), aname);
//allocate the array
auto size = TmpB.getInt32(length);
auto arr = TmpB.CreateAlloca(type->base->GetLLVMType(), size, aname + ".array");
//store size
auto size_p = TmpB.CreateGEP(Alloca, { TmpB.getInt32(0), TmpB.getInt32(0) });
TmpB.CreateStore(size, size_p);
//store pointer (todo write zero?)
//auto pointer_p = TmpB.CreateGEP(Alloca, { TmpB.getInt32(0), TmpB.getInt32(1) });
//TmpB.CreateStore(arr, pointer_p);
}
else if (type->GetBaseType()->type == Types::Trait)
{
context->root->Error("Cannot instantiate trait", ii.second);
}
else
{
Alloca = TmpB.CreateAlloca(type->GetLLVMType(), 0, aname);
}
if (type->GetSize() >= 4)
Alloca->setAlignment(4);
// Store the initial value into the alloca.
if (this->_right)
{
CValue alloc;
alloc.type = type->GetPointerType();
alloc.val = Alloca;
context->Store(alloc, val, true);
}
}
else if (this->_right)
{
//need to move allocas outside of the loop and into the main body
auto TheFunction = context->function->f;
llvm::IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
TheFunction->getEntryBlock().begin());
Alloca = TmpB.CreateAlloca(val.type->GetLLVMType(), 0, aname);
if (val.type->GetSize() >= 4)
Alloca->setAlignment(4);
CValue alloc;
alloc.val = Alloca;
alloc.type = val.type->GetPointerType();
context->Store(alloc, val, true);
}
else
{
context->root->Error("Cannot infer variable type without a value!", ii.second);
}
// Add debug info
llvm::DIFile* unit = context->root->debug_info.file;
type->Load(context->root);
llvm::DILocalVariable* D = context->root->debug->createAutoVariable(context->function->scope, aname, unit, ii.second.line,
type->GetDebugType(context->root));
llvm::Instruction *declare = context->root->debug->insertDeclare(
Alloca, D, context->root->debug->createExpression(), llvm::DebugLoc::get(this->token.line, this->token.column, context->function->scope), context->root->builder.GetInsertBlock());
declare->setDebugLoc(llvm::DebugLoc::get(ii.second.line, ii.second.column, context->function->scope));
context->RegisterLocal(aname, CValue(type->GetPointerType(), Alloca), needs_destruction);
//construct it!
if (this->_right == 0)
{
if (type->type == Types::Struct)
{
context->Construct(CValue(type->GetPointerType(), Alloca), 0);
}
else if (type->type == Types::Array && type->base->type == Types::Struct)
{
//todo lets move this junk into construct so we dont have to do this in multiple places
auto loc = context->root->builder.CreateGEP(Alloca, { context->root->builder.getInt32(0), context->root->builder.getInt32(0) });
auto size = context->root->builder.CreateLoad(loc);
auto ptr = context->root->builder.CreateGEP(Alloca, { context->root->builder.getInt32(0), context->root->builder.getInt32(1) });
ptr = context->root->builder.CreateLoad(ptr);
context->Construct(CValue(type->base->GetPointerType(), ptr), size);
}
}
}
return CValue();
}
Type* StructExpression::TypeCheck(CompilerContext* context)
{
//push the namespace then define these types
auto me = context->root->LookupType(this->name.text, false);
auto old = context->root->ns;
me->data->parent = old;
context->root->ns = me->data;
for (auto ii : this->members)
{
if (ii.type == StructMember::FunctionMember)
ii.function->TypeCheck(context);
}
context->root->ns = old;
return 0;
}
CValue StructExpression::Compile(CompilerContext* context)
{
if (this->templates)
{
//dont compile, just verify that all traits are valid
for (auto ii : *this->templates)
{
auto iter = context->root->TryLookupType(ii.type.text);
if (iter == 0 || iter->type != Types::Trait)
context->root->Error("Trait '" + ii.type.text + "' is not defined", ii.type);
}
return CValue();
}
//compile function members
for (auto ii : this->members)
{
if (ii.type == StructMember::FunctionMember)
ii.function->Compile(context);