// Build prototype.
LuaPrototype BuildPrototype(LuaAST LuaAST)
{
// Enter block.
block = new BlockBuilder(block, LuaAST.Block, 0);
// Enter function.
function = new FunctionBuilder(function, LuaAST, block);
for (int parameter = 0; parameter < LuaAST.Parameters.Count; ++parameter)
{
function.DeclareLocal(LuaAST.Parameters[parameter]);
}
BuildBlock(LuaAST.Block);
for (int parameter = LuaAST.Parameters.Count - 1; parameter >= 0; --parameter)
{
function.RetireLocal(LuaAST.Parameters[parameter]);
}
// End function.
LuaPrototype prototype = function.Build();
function = function.Parent;
// End of block.
block = block.Parent;
return(prototype);
}
// Compiling.
public static LuaPrototype Compile(TextWriter errorWriter, TextReader sourceReader, string sourceName)
{
// Parse the function.
LuaAST LuaAST = LuaParser.Parse(errorWriter, sourceReader, sourceName);
if (LuaAST == null)
{
return(null);
}
// Compile.
BytecodeCompiler compiler = new BytecodeCompiler(sourceName);
LuaPrototype prototype = compiler.BuildPrototype(LuaAST);
return(prototype);
}
public FunctionBuilder(FunctionBuilder parent, LuaAST function, BlockBuilder functionBlock)
{
Parent = parent;
Function = function;
constants = new List <object>();
prototypes = new List <LuaPrototype>();
instructions = new List <Instruction>();
instructionSourceSpans = new List <SourceSpan>();
labels = new Dictionary <Label, int>();
patchLabels = new Dictionary <Label, Patch>();
locals = new Dictionary <Variable, int>();
debugLocals = new List <Symbol>();
localTop = 0;
top = 0;
watermark = 0;
}
public FunctionClosure(SourceSpan s, LuaAST function)
: base(s)
{
Function = function;
}