Testing new vm/language WIP

1 files changed, 326 insertions, 0 deletions

diff --git a/src/pim/Generator.cpp b/src/pim/Generator.cpp
new file mode 100644
index 0000000..b2ea84c
--- /dev/null
+++ b/src/pim/Generator.cpp
@@ -0,0 +1,326 @@
+//Code generator for bytecode
+#include <sstream>
+#include "Format.h"
+#include "Generator.h"
+#include "Opcodes.h"
+namespace pim
+{
+	namespace compiler
+	{
+		Generator::Generator() :
+			output(std::cout),
+			labelCounter(0),
+			programCounter(0)
+		{
+
+		}
+
+		void Generator::defineLabel(std::string label)
+		{
+			Label newLabel;
+			newLabel.Name = label;
+			newLabel.Position = programCounter;//program.size();
+			labelPositions.push_back(newLabel);
+		}
+
+		void Generator::writeOpcode(int opcode)
+		{
+			programCounter++;
+			program.push_back(opcode);
+		}
+
+		void Generator::writeConstant(std::string constant)
+		{
+			writeConstant(format::StringToNumber<int>(constant));
+		}
+
+		void Generator::writeConstant(int constant)
+		{
+			program.push_back(constant & 0xFF);
+			program.push_back((constant>>8) & 0xFF);
+			program.push_back((constant>>16) & 0xFF);
+			program.push_back((constant>>24) & 0xFF);
+		}
+
+		void Generator::writeConstantPlaceholder(std::string label)
+		{
+			placeholders.push_back(Placeholder(program.size(), label));
+			program.push_back(0);
+			program.push_back(0);
+			program.push_back(0);
+			program.push_back(0);
+		}
+
+		void Generator::writeConstantPlaceholder(int * value)
+		{
+			valuePlaceholders.push_back(ValuePlaceholder(program.size(), value));
+			program.push_back(0);
+			program.push_back(0);
+			program.push_back(0);
+			program.push_back(0);
+		}
+
+		std::vector<unsigned char> Generator::Finish()
+		{
+			for(std::vector<Placeholder>::iterator iter = placeholders.begin(), end = placeholders.end(); iter != end; ++iter)
+			{
+				bool found = false;
+				Placeholder cPosition = *iter;
+				for(std::vector<Label>::iterator iter2 = labelPositions.begin(), end2 = labelPositions.end(); iter2 != end2; ++iter2)
+				{
+					Label cLabel = *iter2;
+					if(cPosition.second == cLabel.Name)
+					{
+						std::cout << "Setting placeholder at " << cPosition.first << " with " << cLabel.Position << " for" << cPosition.second << std::endl;
+						found = true;
+						program[cPosition.first] = cLabel.Position & 0xFF;
+						program[cPosition.first+1] = (cLabel.Position >> 8) & 0xFF;
+						program[cPosition.first+2] = (cLabel.Position >> 16) & 0xFF;
+						program[cPosition.first+3] = (cLabel.Position >> 24) & 0xFF;
+						break;
+					}
+				}				
+				if(!found)
+					throw SymbolNotFoundException(cPosition.second);
+			}
+
+			for(std::vector<ValuePlaceholder>::iterator iter = valuePlaceholders.begin(), end = valuePlaceholders.end(); iter != end; ++iter)
+			{
+				ValuePlaceholder cPosition = *iter;
+				int value = *cPosition.second;
+
+				std::cout << "Setting value placeholder at " << cPosition.first << " with " << value << std::endl;
+						
+
+				program[cPosition.first] = value & 0xFF;
+				program[cPosition.first+1] = (value >> 8) & 0xFF;
+				program[cPosition.first+2] = (value >> 16) & 0xFF;
+				program[cPosition.first+3] = (value >> 24) & 0xFF;
+			}
+
+			return program;
+		}
+
+		std::string Generator::UniqueLabel(std::string prefix)
+		{
+			std::stringstream label;
+			label << prefix;
+			label << "_";
+			label << labelCounter;
+			label << "_";
+			return label.str();
+		}
+
+		void Generator::PushScope(std::string label)
+		{
+			scopes.push(currentScope);
+			Scope * prevScope = currentScope;
+			currentScope = new Scope();
+			defineLabel(label);
+		}
+
+		void Generator::PushLocalScope(std::string label)
+		{
+			scopes.push(currentScope);
+			Scope * prevScope = currentScope;
+			currentScope = new Scope();
+			currentScope->Definitions.insert(currentScope->Definitions.begin(), prevScope->Definitions.begin(), prevScope->Definitions.end());
+			currentScope->FrameSize = prevScope->FrameSize;
+			defineLabel(label);
+		}
+
+		void Generator::PopScope()
+		{
+
+			writeOpcode(Opcode::Return);
+			writeConstant(currentScope->LocalFrameSize);
+			currentScope = scopes.top();
+			scopes.pop();
+		}
+
+		void Generator::ScopeLabel(std::string label)
+		{
+			//defineLabelwriteOpcode("." << label);
+			defineLabel(label);
+		}	
+
+		void Generator::LocalEnter()
+		{
+			writeOpcode(Opcode::LocalEnter);
+			writeConstantPlaceholder(&(currentScope->LocalFrameSize));
+		}
+
+		void Generator::ScopeVariableType(int type)
+		{
+			variableType = type;
+		}
+
+		void Generator::ScopeVariable(std::string label)
+		{
+			currentScope->Definitions.push_back(Definition(label, variableType, currentScope->FrameSize));
+			currentScope->FrameSize += 4;
+			currentScope->LocalFrameSize += 4;
+		}
+
+		void Generator::PushVariableAddress(std::string label)
+		{
+			//writeOpcode("address");  << " " << currentScope->GetDefinition(label).StackPosition 
+		}
+
+		void Generator::LoadVariable(std::string label)
+		{
+			writeOpcode(Opcode::Load);
+			writeConstant(currentScope->GetDefinition(label).StackPosition);
+		}
+
+		void Generator::StoreVariable(std::string label)
+		{
+			writeOpcode(Opcode::Store);
+			writeConstant(currentScope->GetDefinition(label).StackPosition);
+		}
+
+		void Generator::Constant(std::string constant)
+		{
+			writeOpcode(Opcode::Constant);
+			writeConstant(constant);
+		}
+
+		void Generator::Increment(std::string constant)
+		{
+			writeOpcode(Opcode::Increment);
+			writeConstant(constant);
+		}
+
+		void Generator::Discard()
+		{
+			writeOpcode(Opcode::Discard);
+		}
+
+		void Generator::Duplicate()
+		{
+			writeOpcode(Opcode::Duplicate);
+		}
+
+		void Generator::Add()
+		{
+			writeOpcode(Opcode::Add);
+		}
+
+		void Generator::Subtract()
+		{
+			writeOpcode(Opcode::Subtract);
+		}
+
+		void Generator::Multiply()
+		{
+			writeOpcode(Opcode::Multiply);
+		}
+
+		void Generator::Divide()
+		{
+			writeOpcode(Opcode::Divide);
+		}
+
+		void Generator::Modulus()
+		{
+			writeOpcode(Opcode::Modulus);
+		}
+
+		void Generator::Negate()
+		{
+			writeOpcode(Opcode::Negate);
+		}
+
+		void Generator::CreateParticle()
+		{
+			writeOpcode(Opcode::Create);
+
+		}
+
+		void Generator::TransformParticle()
+		{
+			writeOpcode(Opcode::Transform);
+		}
+
+		void Generator::GetParticle()
+		{
+			writeOpcode(Opcode::Get);
+		}
+
+		void Generator::GetPosition()
+		{
+			writeOpcode(Opcode::Position);
+		}
+
+		void Generator::KillParticle()
+		{
+			writeOpcode(Opcode::Kill);
+		}
+
+
+		void Generator::IntegerToDecimal()
+		{
+
+		}
+
+		void Generator::DecimalToInteger()
+		{
+
+		}
+
+
+		void Generator::JumpEqual(std::string label)
+		{
+			writeOpcode(Opcode::JumpEqual);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::JumpNotEqual(std::string label)
+		{
+			writeOpcode(Opcode::JumpNotEqual);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::JumpGreater(std::string label)
+		{
+			writeOpcode(Opcode::JumpGreater);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::JumpGreaterEqual(std::string label)
+		{
+			writeOpcode(Opcode::JumpGreaterEqual);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::JumpLess(std::string label)
+		{
+			writeOpcode(Opcode::JumpLess);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::JumpLessEqual(std::string label)
+		{
+			writeOpcode(Opcode::JumpLessEqual);
+			writeConstantPlaceholder(label); 
+		}
+
+		void Generator::Jump(std::string label)
+		{
+			writeOpcode(Opcode::Jump);
+			writeConstantPlaceholder(label); 
+		}
+
+
+		void Generator::Call(int arguments, std::string label)
+		{
+
+		}
+
+		void Generator::Return()
+		{
+
+		}
+
+	}
+}
\ No newline at end of file