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| 1 | namespace Syntax.Trees.Statements is | |
| 2 | use Source; | |
| 3 | ||
| 4 | class FOR( | |
| 5 | location: LOCATION, | |
| 6 | variable: Variables.VARIABLE?, | |
| 7 | expression: Expressions.Expression?, | |
| 8 | body: Statements.LIST? | |
| 9 | ): Statement, ScopeCarrier is | |
| 10 | scope: Semantic.Scope? public; | |
| 11 | ||
| 12 | read_iterator: Semantic.Symbols.Function? public; | |
| 13 | read_current: Semantic.Symbols.Function? public; | |
| 14 | move_next: Semantic.Symbols.Function? public; | |
| 15 | ||
| 16 | // Set by compile-expressions when the loop expression is a | |
| 17 | // fusible Pipe[T] chain: the IL pass then lowers the whole | |
| 18 | // chain to one inline loop instead of iterating the built pipe | |
| 19 | // objects. Null means iterate normally. See | |
| 20 | // Syntax.Process.PIPE_FUSION_RECOGNIZER. | |
| 21 | fusion: Syntax.Process.PIPE_FUSION? public; | |
| 22 | ||
| 23 | super(location); | |
| 24 | ||
| 25 | accept(visitor: Visitor) is | |
| 26 | visitor.visit(self); | |
| 27 | si | |
| 28 | ||
| 29 | walk(visitor: Visitor) is | |
| 30 | if !visitor.pre(self) then | |
| 31 | if variable? then | |
| 32 | variable.walk(visitor); | |
| 33 | fi | |
| 34 | ||
| 35 | if expression? then | |
| 36 | expression.walk(visitor); | |
| 37 | fi | |
| 38 | ||
| 39 | if body? then | |
| 40 | body.walk(visitor); | |
| 41 | fi | |
| 42 | fi | |
| 43 | ||
| 44 | accept(visitor); | |
| 45 | si | |
| 46 | si | |
| 47 | si |