public override void GenerateCode(FileManager fileManager, SymbolTable symbolTable, CodeGeneratorHelper codeGeneratorHelper)
{
AppendNodeComment(fileManager);
// Check condition
this._children[0].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
// If the condition is false, jump to the else-statement (exit label if else-statement is null)
string elseLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.JumpOnFalse(elseLabel));
// Then-statement
this._children[1].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
// On existing else-statement jump over it
string outLabel = null;
if (this._children[2] != null)
{
outLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.Jump(outLabel));
}
// Generate else label
fileManager.Output.Append(Macro.Label(elseLabel));
// Else-statement and exit label
if (this._children[2] != null)
{
this._children[2].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
fileManager.Output.Append(Macro.Label(outLabel));
}
}
public override void GenerateCode(FileManager fileManager, SymbolTable symbolTable, CodeGeneratorHelper codeGeneratorHelper)
{
AppendNodeComment(fileManager);
// Generate loop start label
string startLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.Label(startLabel));
// Check condition and jump out if false
this._children[0].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
string outLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.JumpOnFalse(outLabel));
// Loop body
this._children[1].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
// Jump back to condition check
fileManager.Output.Append(Macro.Jump(startLabel));
// Generate loop end label
fileManager.Output.Append(Macro.Label(outLabel));
}
public override void GenerateCode(FileManager fileManager, SymbolTable symbolTable, CodeGeneratorHelper codeGeneratorHelper)
{
AppendNodeComment(fileManager);
this._children[0].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
string elseLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.JumpOnFalse(elseLabel));
this._children[1].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
string fiiLabel = codeGeneratorHelper.GenerateNextLabel();
fileManager.Output.Append(Macro.Jump(fiiLabel));
fileManager.Output.Append(Macro.Label(elseLabel));
this._children[2].GenerateCode(fileManager, symbolTable, codeGeneratorHelper);
fileManager.Output.Append(Macro.Label(fiiLabel));
}
