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| 1 | namespace Syntax.Process is | |
| 2 | ||
| 3 | // Collects the function literals held anywhere in an expression | |
| 4 | // that a pack adaptation is about to take out of the tree. | |
| 5 | // Generate-il emits a closure body by walking the literal that | |
| 6 | // carries it, so a literal left behind the splice names a method | |
| 7 | // with no body; the adapter that replaces the expression carries | |
| 8 | // these along instead. | |
| 9 | // | |
| 10 | // Stops at each literal rather than descending into it: walking one | |
| 11 | // reaches whatever it nests. | |
| 12 | class SPLICED_LITERAL_SCANNER: Visitor is | |
| 13 | _found: Collections.LIST[Trees.Expressions.FUNCTION] | |
| 14 | ||
| 15 | init() is | |
| 16 | super.init() | |
| 17 | ||
| 18 | _found = Collections.LIST[Trees.Expressions.FUNCTION]() | |
| 19 | si | |
| 20 | ||
| 21 | scan(expression: Trees.Expressions.Expression) -> Collections.List[Trees.Expressions.FUNCTION] is | |
| 22 | _found = Collections.LIST[Trees.Expressions.FUNCTION]() | |
| 23 | ||
| 24 | expression.walk(self) | |
| 25 | ||
| 26 | return _found | |
| 27 | si | |
| 28 | ||
| 29 | pre(function: Trees.Expressions.FUNCTION) -> bool is | |
| 30 | _found.add(function) | |
| 31 | ||
| 32 | return true | |
| 33 | si | |
| 34 | ||
| 35 | pre(function: Trees.Definitions.FUNCTION) -> bool => true | |
| 36 | si | |
| 37 | si |