Phasor::CodeGenerator Class Reference

Code generator for Phasor VM. More...

#include <CodeGen.hpp>

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Public Member Functions
Bytecode	generate (const AST::Program &program, const std::map< std::string, int > &existingVars={}, int nextVarIdx=0, bool replMode=false)
	Generate bytecode from program.

Private Member Functions
uint8_t	allocateRegister ()
	Allocate a new register.
void	freeRegister (uint8_t reg)
	Free a register.
void	resetRegisters ()
	Reset register allocator.
bool	isLiteralExpression (const AST::Expression *expr, Value &outValue)
	Check if expression is a compile-time literal.
ValueType	inferExpressionType (const AST::Expression *expr, bool &known)
	Simple expression type inference (conservative).
void	generateStatement (const AST::Statement *stmt)
	Generate bytecode from Statement.
void	generateExpression (const AST::Expression *expr)
	Generate bytecode from Expression.
void	generateVarDecl (const AST::VarDecl *varDecl)
	Generate bytecode from Variable Declaration.
void	generateExpressionStmt (const AST::ExpressionStmt *exprStmt)
	Generate bytecode from Expression Statement.
void	generatePrintStmt (const AST::PrintStmt *printStmt)
	Generate bytecode from Print Statement.
void	generateImportStmt (const AST::ImportStmt *importStmt)
	Generate bytecode from Import Statement.
void	generateExportStmt (const AST::ExportStmt *exportStmt)
	Generate bytecode from Export Statement.
void	generateNumberExpr (const AST::NumberExpr *numExpr)
	Generate bytecode from Numeral Expression.
void	generateStringExpr (const AST::StringExpr *strExpr)
	Generate bytecode from String Expression.
void	generateIdentifierExpr (const AST::IdentifierExpr *identExpr)
	Generate bytecode from Identifier Expression.
void	generateUnaryExpr (const AST::UnaryExpr *unaryExpr)
	Generate bytecode from Unary Expression.
void	generateCallExpr (const AST::CallExpr *callExpr)
	Generate bytecode from Call Expression.
void	generateBinaryExpr (const AST::BinaryExpr *binExpr)
	Generate bytecode from Binary Expression.
void	generateBlockStmt (const AST::BlockStmt *blockStmt)
	Generate bytecode from Block Statement.
void	generateIfStmt (const AST::IfStmt *ifStmt)
	Generate bytecode from If Statement.
void	generateWhileStmt (const AST::WhileStmt *whileStmt)
	Generate bytecode from While Statement.
void	generateForStmt (const AST::ForStmt *forStmt)
	Generate bytecode from For Statement.
void	generateReturnStmt (const AST::ReturnStmt *returnStmt)
	Generate bytecode from Return Statement.
void	generateUnsafeBlockStmt (const AST::UnsafeBlockStmt *unsafeStmt)
	Generate bytecode from Unsafe Block Statement.
void	generateFunctionDecl (const AST::FunctionDecl *funcDecl)
	Generate bytecode from Function Declaration.
void	generateBooleanExpr (const AST::BooleanExpr *boolExpr)
	Generate bytecode from Boolean Expression.
void	generateNullExpr (const AST::NullExpr *nullExpr)
	Generate bytecode from Null Expression.
void	generateAssignmentExpr (const AST::AssignmentExpr *assignExpr)
	Generate bytecode from Assignment Expression.
void	generateStructDecl (const AST::StructDecl *decl)
void	generateStructInstanceExpr (const AST::StructInstanceExpr *expr)
void	generateFieldAccessExpr (const AST::FieldAccessExpr *expr)
void	generatePostfixExpr (const AST::PostfixExpr *expr)
void	generateBreakStmt ()
void	generateContinueStmt ()
void	generateSwitchStmt (const AST::SwitchStmt *switchStmt)

Private Attributes
Bytecode	bytecode
	Generated bytecode.
bool	isRepl = false
	REPL mode.
std::map< std::string, ValueType >	inferredTypes
uint8_t	nextRegister = 0
	Next available register.
std::vector< bool >	registerInUse
	Track which registers are in use.
std::vector< int >	loopStartStack
std::vector< std::vector< int > >	breakJumpsStack
std::vector< std::vector< int > >	continueJumpsStack

Detailed Description

Code generator for Phasor VM.

Definition at line 242 of file CodeGen.hpp.

Member Function Documentation

allocateRegister()

uint8_t Phasor::CodeGenerator::allocateRegister ( )

inlineprivate

Allocate a new register.

Definition at line 268 of file CodeGen.hpp.

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freeRegister()

void Phasor::CodeGenerator::freeRegister ( uint8_t reg )

inlineprivate

Free a register.

Definition at line 286 of file CodeGen.hpp.

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generate()

Bytecode Phasor::CodeGenerator::generate	(	const AST::Program &	program,
		const std::map< std::string, int > &	existingVars = {},
		int	nextVarIdx = 0,
		bool	replMode = false )

Generate bytecode from program.

Parameters

program	Program to generate bytecode for
existingVars	Existing variables to use
nextVarIdx	Next available variable index
replMode	REPL mode

Returns

Bytecode Generated bytecode

Definition at line 7 of file CodeGen.cpp.

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generateAssignmentExpr()

void Phasor::CodeGenerator::generateAssignmentExpr ( const AST::AssignmentExpr * assignExpr )

private

Generate bytecode from Assignment Expression.

Definition at line 903 of file CodeGen.cpp.

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generateBinaryExpr()

void Phasor::CodeGenerator::generateBinaryExpr ( const AST::BinaryExpr * binExpr )

private

Generate bytecode from Binary Expression.

Definition at line 429 of file CodeGen.cpp.

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generateBlockStmt()

void Phasor::CodeGenerator::generateBlockStmt ( const AST::BlockStmt * blockStmt )

private

Generate bytecode from Block Statement.

Definition at line 681 of file CodeGen.cpp.

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generateBooleanExpr()

void Phasor::CodeGenerator::generateBooleanExpr ( const AST::BooleanExpr * boolExpr )

private

Generate bytecode from Boolean Expression.

Definition at line 886 of file CodeGen.cpp.

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generateBreakStmt()

void Phasor::CodeGenerator::generateBreakStmt ( )

private

Definition at line 813 of file CodeGen.cpp.

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generateCallExpr()

void Phasor::CodeGenerator::generateCallExpr ( const AST::CallExpr * callExpr )

private

Generate bytecode from Call Expression.

Definition at line 335 of file CodeGen.cpp.

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generateContinueStmt()

void Phasor::CodeGenerator::generateContinueStmt ( )

private

Definition at line 825 of file CodeGen.cpp.

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generateExportStmt()

void Phasor::CodeGenerator::generateExportStmt ( const AST::ExportStmt * exportStmt )

private

Generate bytecode from Export Statement.

Definition at line 268 of file CodeGen.cpp.

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generateExpression()

void Phasor::CodeGenerator::generateExpression ( const AST::Expression * expr )

private

Generate bytecode from Expression.

Definition at line 157 of file CodeGen.cpp.

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generateExpressionStmt()

void Phasor::CodeGenerator::generateExpressionStmt ( const AST::ExpressionStmt * exprStmt )

private

Generate bytecode from Expression Statement.

Definition at line 243 of file CodeGen.cpp.

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generateFieldAccessExpr()

void Phasor::CodeGenerator::generateFieldAccessExpr ( const AST::FieldAccessExpr * expr )

private

Definition at line 986 of file CodeGen.cpp.

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generateForStmt()

void Phasor::CodeGenerator::generateForStmt ( const AST::ForStmt * forStmt )

private

Generate bytecode from For Statement.

Definition at line 752 of file CodeGen.cpp.

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generateFunctionDecl()

void Phasor::CodeGenerator::generateFunctionDecl ( const AST::FunctionDecl * funcDecl )

private

Generate bytecode from Function Declaration.

Definition at line 855 of file CodeGen.cpp.

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generateIdentifierExpr()

void Phasor::CodeGenerator::generateIdentifierExpr ( const AST::IdentifierExpr * identExpr )

private

Generate bytecode from Identifier Expression.

Definition at line 305 of file CodeGen.cpp.

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generateIfStmt()

void Phasor::CodeGenerator::generateIfStmt ( const AST::IfStmt * ifStmt )

private

Generate bytecode from If Statement.

Definition at line 689 of file CodeGen.cpp.

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generateImportStmt()

void Phasor::CodeGenerator::generateImportStmt ( const AST::ImportStmt * importStmt )

private

Generate bytecode from Import Statement.

Definition at line 262 of file CodeGen.cpp.

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generateNullExpr()

void Phasor::CodeGenerator::generateNullExpr ( const AST::NullExpr * nullExpr )

private

Generate bytecode from Null Expression.

Definition at line 898 of file CodeGen.cpp.

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generateNumberExpr()

void Phasor::CodeGenerator::generateNumberExpr ( const AST::NumberExpr * numExpr )

private

Generate bytecode from Numeral Expression.

Definition at line 274 of file CodeGen.cpp.

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generatePostfixExpr()

void Phasor::CodeGenerator::generatePostfixExpr ( const AST::PostfixExpr * expr )

private

Definition at line 998 of file CodeGen.cpp.

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generatePrintStmt()

void Phasor::CodeGenerator::generatePrintStmt ( const AST::PrintStmt * printStmt )

private

Generate bytecode from Print Statement.

Definition at line 256 of file CodeGen.cpp.

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generateReturnStmt()

void Phasor::CodeGenerator::generateReturnStmt ( const AST::ReturnStmt * returnStmt )

private

Generate bytecode from Return Statement.

Definition at line 837 of file CodeGen.cpp.

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generateStatement()

void Phasor::CodeGenerator::generateStatement ( const AST::Statement * stmt )

private

Generate bytecode from Statement.

Definition at line 88 of file CodeGen.cpp.

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generateStringExpr()

void Phasor::CodeGenerator::generateStringExpr ( const AST::StringExpr * strExpr )

private

Generate bytecode from String Expression.

Definition at line 299 of file CodeGen.cpp.

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generateStructDecl()

void Phasor::CodeGenerator::generateStructDecl ( const AST::StructDecl * decl )

private

Definition at line 1038 of file CodeGen.cpp.

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generateStructInstanceExpr()

void Phasor::CodeGenerator::generateStructInstanceExpr ( const AST::StructInstanceExpr * expr )

private

Definition at line 953 of file CodeGen.cpp.

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generateSwitchStmt()

void Phasor::CodeGenerator::generateSwitchStmt ( const AST::SwitchStmt * switchStmt )

private

Definition at line 1080 of file CodeGen.cpp.

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generateUnaryExpr()

void Phasor::CodeGenerator::generateUnaryExpr ( const AST::UnaryExpr * unaryExpr )

private

Generate bytecode from Unary Expression.

Definition at line 311 of file CodeGen.cpp.

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generateUnsafeBlockStmt()

void Phasor::CodeGenerator::generateUnsafeBlockStmt ( const AST::UnsafeBlockStmt * unsafeStmt )

private

Generate bytecode from Unsafe Block Statement.

Definition at line 850 of file CodeGen.cpp.

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generateVarDecl()

void Phasor::CodeGenerator::generateVarDecl ( const AST::VarDecl * varDecl )

private

Generate bytecode from Variable Declaration.

Definition at line 208 of file CodeGen.cpp.

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generateWhileStmt()

void Phasor::CodeGenerator::generateWhileStmt ( const AST::WhileStmt * whileStmt )

private

Generate bytecode from While Statement.

Definition at line 714 of file CodeGen.cpp.

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inferExpressionType()

ValueType Phasor::CodeGenerator::inferExpressionType ( const AST::Expression * expr, bool & known )

private

Simple expression type inference (conservative).

Parameters

expr	expression to inspect
known	set to true when a type is known

Returns

inferred ValueType (valid only when known == true)

Definition at line 62 of file CodeGen.cpp.

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isLiteralExpression()

bool Phasor::CodeGenerator::isLiteralExpression ( const AST::Expression * expr, Value & outValue )

private

Check if expression is a compile-time literal.

Definition at line 23 of file CodeGen.cpp.

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resetRegisters()

void Phasor::CodeGenerator::resetRegisters ( )

inlineprivate

Reset register allocator.

Definition at line 295 of file CodeGen.hpp.

Member Data Documentation

breakJumpsStack

std::vector<std::vector<int> > Phasor::CodeGenerator::breakJumpsStack

private

Definition at line 344 of file CodeGen.hpp.

bytecode

Bytecode Phasor::CodeGenerator::bytecode

private

Generated bytecode.

Definition at line 258 of file CodeGen.hpp.

continueJumpsStack

std::vector<std::vector<int> > Phasor::CodeGenerator::continueJumpsStack

private

Definition at line 345 of file CodeGen.hpp.

inferredTypes

std::map<std::string, ValueType> Phasor::CodeGenerator::inferredTypes

private

Definition at line 261 of file CodeGen.hpp.

isRepl

bool Phasor::CodeGenerator::isRepl = false

private

REPL mode.

Definition at line 259 of file CodeGen.hpp.

loopStartStack

std::vector<int> Phasor::CodeGenerator::loopStartStack

private

Definition at line 343 of file CodeGen.hpp.

nextRegister

uint8_t Phasor::CodeGenerator::nextRegister = 0

private

Next available register.

Definition at line 264 of file CodeGen.hpp.

registerInUse

std::vector<bool> Phasor::CodeGenerator::registerInUse

private

Track which registers are in use.

Definition at line 265 of file CodeGen.hpp.

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The documentation for this class was generated from the following files:

• src/Codegen/CodeGen.hpp
• src/Codegen/CodeGen.cpp