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lab17: part 3

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Yura
2026-04-22 23:48:59 -07:00
parent 1c5df94c31
commit b7285c39d6
1 changed files with 11 additions and 6 deletions
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17
lab17/compiler.js
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@@ -202,24 +202,29 @@ class Compiler {
break; break;
case "*": case "*":
//
// ***YOUR CODE HERE***
//
// Using the '+' case as a template, add support // Using the '+' case as a template, add support
// for '*'. Note that the 'MUL' opcode only works // for '*'. Note that the 'MUL' opcode only works
// with two arguments, whereas '*' allows an arbitrary // with two arguments, whereas '*' allows an arbitrary
// number of arguments. // number of arguments.
this.writeBytecode(second);
rest.forEach((x) => {
this.writeBytecode(x);
this.writeOp('MUL');
});
break; break;
case "-": case "-":
//
// ***YOUR CODE HERE***
//
// Add support for '-'. The approach here will be // Add support for '-'. The approach here will be
// Similar to the solution for '+' and '*'. However, // Similar to the solution for '+' and '*'. However,
// one key difference is that the order of the arguments // one key difference is that the order of the arguments
// matters. You will need to use 'SWAP1' to get the // matters. You will need to use 'SWAP1' to get the
// arguments ordered correctly before invoking 'SUB'. // arguments ordered correctly before invoking 'SUB'.
this.writeBytecode(second);
rest.forEach((x) => {
this.writeBytecode(x);
this.writeOp('SWAP1');
this.writeOp('SUB');
});
break; break;
default: default: