X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fprogramcompiler.cpp;h=f30ccfa6233ad6b6dc8115488210c7f1dbd4c7a5;hp=6bf5ba66a83ed851075e48fda66f33a3a17b5d6e;hb=HEAD;hpb=961715848c111907b5f443c5b545a429b40583e6

diff --git a/source/programcompiler.cpp b/source/programcompiler.cpp
deleted file mode 100644
index 6bf5ba66..00000000
--- a/source/programcompiler.cpp
+++ /dev/null
@@ -1,659 +0,0 @@
-#include <msp/core/raii.h>
-#include <msp/strings/format.h>
-#include <msp/strings/utils.h>
-#include "error.h"
-#include "program.h"
-#include "programcompiler.h"
-#include "shader.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-using namespace ProgramSyntax;
-
-ProgramCompiler::ProgramCompiler():
-	module(0)
-{ }
-
-void ProgramCompiler::compile(const string &source)
-{
-	module = &parser.parse(source);
-	process();
-}
-
-void ProgramCompiler::compile(IO::Base &io)
-{
-	module = &parser.parse(io);
-	process();
-}
-
-void ProgramCompiler::add_shaders(Program &program)
-{
-	if(!module)
-		throw invalid_operation("ProgramCompiler::add_shaders");
-
-	string head = "#version 150\n";
-	if(module->vertex_context.present)
-		program.attach_shader_owned(new VertexShader(head+format_context(module->vertex_context)));
-	if(module->geometry_context.present)
-		program.attach_shader_owned(new GeometryShader(head+format_context(module->geometry_context)));
-	if(module->fragment_context.present)
-		program.attach_shader_owned(new FragmentShader(head+format_context(module->fragment_context)));
-
-	program.bind_attribute(VERTEX4, "vertex");
-	program.bind_attribute(NORMAL3, "normal");
-	program.bind_attribute(COLOR4_FLOAT, "color");
-	program.bind_attribute(TEXCOORD4, "texcoord");
-}
-
-void ProgramCompiler::process()
-{
-	if(module->vertex_context.present)
-		process(module->vertex_context);
-	if(module->geometry_context.present)
-		process(module->geometry_context);
-	if(module->fragment_context.present)
-		process(module->fragment_context);
-}
-
-void ProgramCompiler::process(Context &context)
-{
-	inject_block(context.content, module->global_context.content);
-
-	resolve_variables(context);
-
-	InterfaceGenerator generator;
-	generator.visit(context);
-
-	resolve_variables(context);
-
-	VariableRenamer renamer;
-	context.content.visit(renamer);
-
-	while(1)
-	{
-		UnusedVariableLocator unused_locator;
-		context.content.visit(unused_locator);
-
-		NodeRemover remover;
-		remover.to_remove.insert(unused_locator.unused_variables.begin(), unused_locator.unused_variables.end());
-		context.content.visit(remover);
-
-		if(!remover.n_removed)
-			break;
-	}
-}
-
-void ProgramCompiler::inject_block(Block &target, const Block &source)
-{
-	list<NodePtr<Node> >::iterator insert_point = target.body.begin();
-	for(list<NodePtr<Node> >::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
-		target.body.insert(insert_point, (*i)->clone());
-}
-
-void ProgramCompiler::resolve_variables(Context &context)
-{
-	VariableResolver resolver;
-	context.content.visit(resolver);
-}
-
-string ProgramCompiler::format_context(Context &context)
-{
-	Formatter formatter;
-	context.content.visit(formatter);
-	return formatter.formatted;
-}
-
-
-ProgramCompiler::Formatter::Formatter():
-	indent(0),
-	parameter_list(false),
-	else_if(false)
-{ }
-
-void ProgramCompiler::Formatter::visit(Literal &literal)
-{
-	formatted += literal.token;
-}
-
-void ProgramCompiler::Formatter::visit(ParenthesizedExpression &parexpr)
-{
-	formatted += '(';
-	parexpr.expression->visit(*this);
-	formatted += ')';
-}
-
-void ProgramCompiler::Formatter::visit(VariableReference &var)
-{
-	formatted += var.name;
-}
-
-void ProgramCompiler::Formatter::visit(MemberAccess &memacc)
-{
-	memacc.left->visit(*this);
-	formatted += format(".%s", memacc.member);
-}
-
-void ProgramCompiler::Formatter::visit(UnaryExpression &unary)
-{
-	if(unary.prefix)
-		formatted += unary.oper;
-	unary.expression->visit(*this);
-	if(!unary.prefix)
-		formatted += unary.oper;
-}
-
-void ProgramCompiler::Formatter::visit(BinaryExpression &binary)
-{
-	binary.left->visit(*this);
-	if(binary.assignment)
-		formatted += format(" %s ", binary.oper);
-	else
-		formatted += binary.oper;
-	binary.right->visit(*this);
-	formatted += binary.after;
-}
-
-void ProgramCompiler::Formatter::visit(FunctionCall &call)
-{
-	formatted += format("%s(", call.name);
-	for(vector<NodePtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
-	{
-		if(i!=call.arguments.begin())
-			formatted += ", ";
-		(*i)->visit(*this);
-	}
-	formatted += ')';
-}
-
-void ProgramCompiler::Formatter::visit(ExpressionStatement &expr)
-{
-	expr.expression->visit(*this);
-	formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(Block &block)
-{
-	if(block.use_braces)
-	{
-		if(else_if)
-		{
-			formatted += '\n';
-			else_if = false;
-		}
-		formatted += format("%s{\n", string(indent*2, ' '));
-	}
-
-	bool change_indent = (!formatted.empty() && !else_if);
-	indent += change_indent;
-	string spaces(indent*2, ' ');
-	for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
-	{
-		if(i!=block.body.begin())
-			formatted += '\n';
-		if(!else_if)
-			formatted += spaces;
-		(*i)->visit(*this);
-	}
-	indent -= change_indent;
-
-	if(block.use_braces)
-		formatted += format("\n%s}", string(indent*2, ' '));
-}
-
-void ProgramCompiler::Formatter::visit(Layout &layout)
-{
-	formatted += "layout(";
-	for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
-	{
-		if(i!=layout.qualifiers.begin())
-			formatted += ", ";
-		formatted += i->identifier;
-		if(!i->value.empty())
-			formatted += format("=%s", i->value);
-	}
-	formatted += format(") %s;", layout.interface);
-}
-
-void ProgramCompiler::Formatter::visit(StructDeclaration &strct)
-{
-	formatted += format("struct %s\n", strct.name);
-	strct.members.visit(*this);
-	formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
-{
-	if(var.constant)
-		formatted += "const ";
-	if(!var.sampling.empty())
-		formatted += format("%s ", var.sampling);
-	if(!var.interface.empty())
-		formatted += format("%s ", var.interface);
-	formatted += format("%s %s", var.type, var.name);
-	if(var.array)
-	{
-		formatted += '[';
-		if(var.array_size)
-			var.array_size->visit(*this);
-		formatted += ']';
-	}
-	if(var.init_expression)
-	{
-		formatted += " = ";
-		var.init_expression->visit(*this);
-	}
-	if(!parameter_list)
-		formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(InterfaceBlock &iface)
-{
-	formatted += format("%s %s\n", iface.interface, iface.name);
-	iface.members.visit(*this);
-	formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(FunctionDeclaration &func)
-{
-	formatted += format("%s %s(", func.return_type, func.name);
-	for(vector<NodePtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
-	{
-		if(i!=func.parameters.begin())
-			formatted += ", ";
-		SetFlag set(parameter_list);
-		(*i)->visit(*this);
-	}
-	formatted += ')';
-	if(func.definition)
-	{
-		formatted += '\n';
-		func.body.visit(*this);
-	}
-	else
-		formatted += ';';
-}
-
-void ProgramCompiler::Formatter::visit(Conditional &cond)
-{
-	if(else_if)
-	{
-		formatted += ' ';
-		else_if = false;
-	}
-
-	formatted += "if(";
-	cond.condition->visit(*this);
-	formatted += ")\n";
-
-	cond.body.visit(*this);
-	if(!cond.else_body.body.empty())
-	{
-		formatted += format("\n%selse", string(indent*2, ' '));
-		SetFlag set(else_if);
-		cond.else_body.visit(*this);
-	}
-}
-
-void ProgramCompiler::Formatter::visit(Iteration &iter)
-{
-	formatted += "for(";
-	iter.init_statement->visit(*this);
-	formatted += ' ';
-	iter.condition->visit(*this);
-	formatted += "; ";
-	iter.loop_expression->visit(*this);
-	formatted += ")\n";
-	iter.body.visit(*this);
-}
-
-void ProgramCompiler::Formatter::visit(Return &ret)
-{
-	formatted += "return ";
-	ret.expression->visit(*this);
-	formatted += ';';
-}
-
-
-ProgramCompiler::VariableResolver::VariableResolver():
-	anonymous(false)
-{ }
-
-void ProgramCompiler::VariableResolver::visit(Block &block)
-{
-	blocks.push_back(&block);
-	block.variables.clear();
-	TraversingVisitor::visit(block);
-	blocks.pop_back();
-}
-
-void ProgramCompiler::VariableResolver::visit(VariableReference &var)
-{
-	var.declaration = 0;
-	type = 0;
-	for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
-	{
-		--i;
-		map<string, VariableDeclaration *>::iterator j = (*i)->variables.find(var.name);
-		if(j!=(*i)->variables.end())
-		{
-			var.declaration = j->second;
-			type = j->second->type_declaration;
-			break;
-		}
-	}
-}
-
-void ProgramCompiler::VariableResolver::visit(MemberAccess &memacc)
-{
-	type = 0;
-	TraversingVisitor::visit(memacc);
-	memacc.declaration = 0;
-	if(type)
-	{
-		map<string, VariableDeclaration *>::iterator i = type->members.variables.find(memacc.member);
-		if(i!=type->members.variables.end())
-		{
-			memacc.declaration = i->second;
-			type = i->second->type_declaration;
-		}
-		else
-			type = 0;
-	}
-}
-
-void ProgramCompiler::VariableResolver::visit(BinaryExpression &binary)
-{
-	if(binary.oper=="[")
-	{
-		binary.right->visit(*this);
-		type = 0;
-		binary.left->visit(*this);
-	}
-	else
-	{
-		TraversingVisitor::visit(binary);
-		type = 0;
-	}
-}
-
-void ProgramCompiler::VariableResolver::visit(StructDeclaration &strct)
-{
-	TraversingVisitor::visit(strct);
-	blocks.back()->types[strct.name] = &strct;
-}
-
-void ProgramCompiler::VariableResolver::visit(VariableDeclaration &var)
-{
-	for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
-	{
-		--i;
-		map<string, StructDeclaration *>::iterator j = (*i)->types.find(var.type);
-		if(j!=(*i)->types.end())
-			var.type_declaration = j->second;
-	}
-
-	TraversingVisitor::visit(var);
-	blocks.back()->variables[var.name] = &var;
-	if(anonymous && blocks.size()>1)
-		blocks[blocks.size()-2]->variables[var.name] = &var;
-}
-
-void ProgramCompiler::VariableResolver::visit(InterfaceBlock &iface)
-{
-	SetFlag set(anonymous);
-	TraversingVisitor::visit(iface);
-}
-
-
-ProgramCompiler::InterfaceGenerator::InterfaceGenerator():
-	context(0),
-	scope_level(0),
-	remove_node(false)
-{ }
-
-string ProgramCompiler::InterfaceGenerator::get_out_prefix(ContextType type)
-{
-	if(type==VERTEX)
-		return "_vs_out_";
-	else if(type==GEOMETRY)
-		return "_gs_out_";
-	else
-		return string();
-}
-
-void ProgramCompiler::InterfaceGenerator::visit(Context &ctx)
-{
-	SetForScope<Context *> set(context, &ctx);
-	if(context->previous)
-		in_prefix = get_out_prefix(context->previous->type);
-	out_prefix = get_out_prefix(context->type);
-	ctx.content.visit(*this);
-}
-
-void ProgramCompiler::InterfaceGenerator::visit(Block &block)
-{
-	SetForScope<unsigned> set(scope_level, scope_level+1);
-	for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
-	{
-		(*i)->visit(*this);
-
-		if(scope_level==1)
-		{
-			for(map<string, NodePtr<Node> >::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
-			{
-				list<NodePtr<Node> >::iterator k = block.body.insert(i, j->second);
-				(*k)->visit(*this);
-			}
-			iface_declarations.clear();
-		}
-
-		for(list<NodePtr<Node> >::iterator j=insert_nodes.begin(); j!=insert_nodes.end(); ++j)
-			block.body.insert(i, *j);
-		insert_nodes.clear();
-
-		if(remove_node)
-			block.body.erase(i++);
-		else
-			++i;
-		remove_node = false;
-	}
-}
-
-string ProgramCompiler::InterfaceGenerator::change_prefix(const string &name, const string &prefix) const
-{
-	unsigned offset = (name.compare(0, in_prefix.size(), in_prefix) ? 0 : in_prefix.size());
-	return prefix+name.substr(offset);
-}
-
-bool ProgramCompiler::InterfaceGenerator::generate_interface(VariableDeclaration &out, const string &iface, const string &name)
-{
-	const map<string, VariableDeclaration *> &context_vars = (iface=="in" ? context->in_variables : context->out_variables);
-	if(context_vars.count(name) || iface_declarations.count(name))
-		return false;
-
-	VariableDeclaration* iface_var = new VariableDeclaration;
-	iface_var->sampling = out.sampling;
-	iface_var->interface = iface;
-	iface_var->type = out.type;
-	iface_var->type_declaration = out.type_declaration;
-	iface_var->name = name;
-	iface_var->array = (out.array || (context->type==GEOMETRY && iface=="in"));
-	iface_var->array_size = out.array_size;
-	if(iface=="in")
-		iface_var->linked_declaration = &out;
-	iface_declarations[iface_var->name] = iface_var;
-
-	return true;
-}
-
-void ProgramCompiler::InterfaceGenerator::insert_assignment(const string &left, ProgramSyntax::Expression *right)
-{
-	BinaryExpression *assign = new BinaryExpression;
-	VariableReference *ref = new VariableReference;
-	ref->name = left;
-	assign->left = ref;
-	assign->oper = "=";
-	assign->right = right;
-	assign->assignment = true;
-
-	ExpressionStatement *stmt = new ExpressionStatement;
-	stmt->expression = assign;
-	insert_nodes.push_back(stmt);
-}
-
-void ProgramCompiler::InterfaceGenerator::visit(VariableReference &var)
-{
-	if(var.declaration || !context->previous)
-		return;
-	if(iface_declarations.count(var.name))
-		return;
-
-	const map<string, VariableDeclaration *> &prev_out = context->previous->out_variables;
-	map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
-	if(i==prev_out.end())
-		i = prev_out.find(in_prefix+var.name);
-	if(i!=prev_out.end())
-		generate_interface(*i->second, "in", var.name);
-}
-
-void ProgramCompiler::InterfaceGenerator::visit(VariableDeclaration &var)
-{
-	if(var.interface=="out")
-	{
-		if(scope_level==1)
-			context->out_variables[var.name] = &var;
-		else if(generate_interface(var, "out", change_prefix(var.name, string())))
-		{
-			remove_node = true;
-			if(var.init_expression)
-				insert_assignment(var.name, var.init_expression->clone());
-		}
-	}
-	else if(var.interface=="in")
-	{
-		context->in_variables[var.name] = &var;
-		if(context->previous)
-		{
-			const map<string, VariableDeclaration *> &prev_out = context->previous->out_variables;
-			map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
-			if(i!=prev_out.end())
-			{
-				var.linked_declaration = i->second;
-				i->second->linked_declaration = &var;
-			}
-		}
-	}
-
-	TraversingVisitor::visit(var);
-}
-
-void ProgramCompiler::InterfaceGenerator::visit(Passthrough &pass)
-{
-	if(context->previous)
-	{
-		const map<string, VariableDeclaration *> &prev_out = context->previous->out_variables;
-		for(map<string, VariableDeclaration *>::const_iterator i=prev_out.begin(); i!=prev_out.end(); ++i)
-		{
-			string out_name = change_prefix(i->second->name, out_prefix);
-			generate_interface(*i->second, "in", i->second->name);
-			generate_interface(*i->second, "out", out_name);
-
-			VariableReference *ref = new VariableReference;
-			ref->name = i->first;
-			if(pass.subscript)
-			{
-				BinaryExpression *subscript = new BinaryExpression;
-				subscript->left = ref;
-				subscript->oper = "[";
-				subscript->right = pass.subscript;
-				subscript->after = "]";
-				insert_assignment(out_name, subscript);
-			}
-			else
-				insert_assignment(out_name, ref);
-		}
-	}
-
-	remove_node = true;
-}
-
-
-void ProgramCompiler::VariableRenamer::visit(VariableReference &var)
-{
-	if(var.declaration)
-		var.name = var.declaration->name;
-}
-
-void ProgramCompiler::VariableRenamer::visit(VariableDeclaration &var)
-{
-	if(var.linked_declaration)
-		var.name = var.linked_declaration->name;
-	TraversingVisitor::visit(var);
-}
-
-
-void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
-{
-	unused_variables.erase(var.declaration);
-}
-
-void ProgramCompiler::UnusedVariableLocator::visit(MemberAccess &memacc)
-{
-	TraversingVisitor::visit(memacc);
-	unused_variables.erase(memacc.declaration);
-}
-
-void ProgramCompiler::UnusedVariableLocator::visit(VariableDeclaration &var)
-{
-	unused_variables.insert(&var);
-	TraversingVisitor::visit(var);
-}
-
-
-ProgramCompiler::NodeRemover::NodeRemover():
-	n_removed(0),
-	immutable_block(false),
-	remove_block(false)
-{ }
-
-void ProgramCompiler::NodeRemover::visit(Block &block)
-{
-	remove_block = immutable_block;
-	for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
-	{
-		bool remove = false;
-		if(to_remove.count(&**i))
-			remove = !immutable_block;
-		else
-		{
-			remove_block = false;
-			(*i)->visit(*this);
-			remove = remove_block;
-		}
-
-		if(remove)
-			block.body.erase(i++);
-		else
-			++i;
-
-		n_removed += remove;
-	}
-}
-
-void ProgramCompiler::NodeRemover::visit(StructDeclaration &strct)
-{
-	SetFlag set(immutable_block);
-	TraversingVisitor::visit(strct);
-}
-
-void ProgramCompiler::NodeRemover::visit(InterfaceBlock &iface)
-{
-	SetFlag set(immutable_block);
-	TraversingVisitor::visit(iface);
-}
-
-} // namespace GL
-} // namespace Msp