From 6bf4b90c90f15f4ab60833bddf5b5756d1a6b1f6 Mon Sep 17 00:00:00 2001 From: Elizabeth Alexander Hunt Date: Thu, 2 Jul 2026 11:55:17 -0700 Subject: Init --- .../compiler/p5-compiler/submit/ast/Mutable.java | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Homework/cs5300/compiler/p5-compiler/submit/ast/Mutable.java (limited to 'Homework/cs5300/compiler/p5-compiler/submit/ast/Mutable.java') diff --git a/Homework/cs5300/compiler/p5-compiler/submit/ast/Mutable.java b/Homework/cs5300/compiler/p5-compiler/submit/ast/Mutable.java new file mode 100644 index 0000000..ac9b7ff --- /dev/null +++ b/Homework/cs5300/compiler/p5-compiler/submit/ast/Mutable.java @@ -0,0 +1,45 @@ +/* + * Code formatter project + * CS 4481 + */ +package submit.ast; + +import submit.MIPSResult; +import submit.RegisterAllocator; +import submit.SymbolTable; + +/** + * + * @author edwajohn + */ +public class Mutable implements Expression { + + private final String id; + private final Expression index; + + public Mutable(String id, Expression index) { + this.id = id; + this.index = index; + } + + @Override + public void toCminus(StringBuilder builder, String prefix) { + builder.append(id); + if (index != null) { + builder.append("["); + index.toCminus(builder, prefix); + builder.append("]"); + } + } + + public MIPSResult toMIPS(StringBuilder code, StringBuilder data, + SymbolTable symbolTable, + RegisterAllocator regAllocator) { + String stackReg = regAllocator.getAny(); + + code.append(String.format("li %s %d\n", stackReg, symbolTable.offsetOf(id))) + .append(String.format("add %s %s $sp\n", stackReg, stackReg)); + + return MIPSResult.createAddressResult(stackReg, VarType.INT); + } +} -- cgit v1.3