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scarmuega merged 1 commit into from
Jun 10, 2026
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docs: document the multiply (*) operator #57

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9 changes: 9 additions & 0 deletions language/assets.md
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Expand Up @@ -84,6 +84,15 @@ Conceptually each operand is a bag of `(policy, asset_name, amount)` entries; ad

The value attached to an input or reference participates in the same arithmetic: `source - Ada(quantity) - fees` makes sense because `source` is an asset value.

## Scaling

Multiplying an `AnyAsset` by an `Int` scales every entry's amount. The `Int` may be on either side, and `*` binds tighter than `+` and `-`:

```tx3
StaticAsset(50) * quantity
Ada(2000000) + StaticAsset(1) * count
```

## Reading asset components

An `AnyAsset` exposes three properties:
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6 changes: 4 additions & 2 deletions language/data.md
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Expand Up @@ -47,16 +47,18 @@ The operator surface is small.
| `expr.identifier` | Property access. Available on records, variant struct cases, `AnyAsset`, and `UtxoRef`. |
| `expr[expr]` | List indexing. The index expression must have type `Int`. |
| `!expr` | Arithmetic negation. Applies to `Int`. |
| `a * b` | Multiplication. `Int * Int` multiplies integers; `AnyAsset * Int` (and `Int * AnyAsset`) scales asset quantities. |
| `a + b` | Addition. `Int + Int` adds integers; `AnyAsset + AnyAsset` aggregates asset values. |
| `a - b` | Subtraction. Same shapes as `+`. |

Precedence, from tightest to loosest:

1. Postfix `.` and `[…]`.
2. Prefix `!`.
3. Infix `+` and `-`.
3. Infix `*`.
4. Infix `+` and `-`.

Parentheses override precedence. There are no comparison, logical, multiplication, division, or ternary operators in this version of the language.
Parentheses override precedence. There are no comparison, logical, division, or ternary operators in this version of the language.

## Constructors

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