public static BoundBlockExpression Lower(Symbol method, BoundStatement statement)
{
var debug = false;
if (debug)
{
Console.WriteLine("==== Original Code ===");
statement.WriteTo(Console.Out);
}
var boundStatement = LoopLowerer.Lower(method, statement);
if (debug)
{
Console.WriteLine("==== Lowered Code ===");
boundStatement.WriteTo(Console.Out);
}
var noIndexExpr = IndexExpressions.Lower(method, boundStatement);
if (debug)
{
Console.WriteLine("==== Index Expressions ===");
noIndexExpr.WriteTo(Console.Out);
}
var tac = ThreeAddressCode.Lower(method, noIndexExpr);
if (debug)
{
Console.WriteLine("==== Three Address Code ===");
tac.WriteTo(Console.Out);
}
var unitLessStatements = RemoveUnitAssignments.Lower(tac);
if (debug)
{
Console.WriteLine("==== Remove Unit Assignments ===");
unitLessStatements.WriteTo(Console.Out);
}
var inlinedTemporaries = InlineTemporaries.Lower(method, unitLessStatements);
if (debug)
{
Console.WriteLine("==== Inlined Temporaries ===");
inlinedTemporaries.WriteTo(Console.Out);
}
var deadCodeRemoval = DeadCodeRemoval.RemoveDeadCode(inlinedTemporaries);
if (debug)
{
Console.WriteLine("==== Dead Code Removal ===");
deadCodeRemoval.WriteTo(Console.Out);
}
return(deadCodeRemoval);
}
public static void WriteNestedStatement(this IndentedTextWriter writer, BoundStatement node)
{
if (node is BoundBlockStatement block)
{
block.WriteTo(writer);
}
else
{
writer.Indent++;
node.WriteTo(writer);
writer.Indent--;
}
}
private static void WriteNestedStatement(this IndentedTextWriter writer, BoundStatement node)
{
var needsIndentation = !(node is BoundBlockStatement);
if (needsIndentation)
{
writer.Indent++;
}
node.WriteTo(writer);
if (needsIndentation)
{
writer.Indent--;
}
}
