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/*
* Code formatter project
* CS 4481
*/
package submit.ast;
import java.util.List;
import submit.MIPSResult;
import submit.RegisterAllocator;
import submit.SymbolTable;
/**
*
* @author edwajohn
*/
public class CompoundStatement extends AbstractNode implements Statement {
private final List<Statement> statements;
private SymbolTable symbolTable;
public CompoundStatement(List<Statement> statements,
SymbolTable symbolTable) {
this.statements = statements;
this.symbolTable = symbolTable;
}
public SymbolTable getSymbolTable() { return symbolTable; }
@Override
public void toCminus(StringBuilder builder, String prefix) {
builder.append(prefix).append("{\n");
for (Statement s : statements) {
s.toCminus(builder, prefix + " ");
}
builder.append(prefix).append("}\n");
}
@Override
public MIPSResult toMIPS(StringBuilder code, StringBuilder data,
SymbolTable symbolTable,
RegisterAllocator regAllocator) {
code.append("# Entering a new scope.\n");
code.append("# Symbols in symbol table:\n");
for (String name : this.symbolTable.symbolNames())
code.append(
String.format("# %s : %d\n", name, this.symbolTable.offsetOf(name)));
code.append("# Update the stack pointer.\n");
code.append(String.format("addi $sp $sp %d\n", symbolTable.getOffset()));
for (Statement statement : statements)
statement.toMIPS(code, data, this.symbolTable, regAllocator);
code.append("# Exit scope.\n");
code.append(String.format("addi $sp $sp %s\n", -symbolTable.getOffset()));
return MIPSResult.createVoidResult();
}
}
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