Mercurial > python-compiler.rs
annotate src/ast_rewrite.rs @ 11:5c169d5807b5
Remove dead code.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Thu, 02 Jun 2016 01:22:28 +0100 |
| parents | 94ff501bf336 |
| children |
| rev | line source |
|---|---|
| 0 | 1 use python_ast::{Module, Statement, Expr}; |
| 2 | |
| 3 trait Visitor<T> { | |
| 4 fn visit_module(&mut self, module: Module) -> T; | |
| 5 fn visit_statement(&mut self, statement: Statement) -> T; | |
| 6 fn visit_expr(&mut self, expr: Expr) -> T; | |
| 7 } | |
| 8 | |
| 9 struct Rewrite { | |
| 10 } | |
| 11 | |
| 12 impl Visitor<()> for Rewrite { | |
| 13 fn visit_module(&mut self, module: Module) -> () { | |
| 14 for statement in module.statements { | |
| 15 println!("{:?}", statement); | |
| 16 self.visit_statement(statement); | |
| 17 } | |
| 18 } | |
| 19 | |
| 20 fn visit_statement(&mut self, statement: Statement) -> () { | |
| 21 match statement { | |
| 22 Statement::FunctionDef(Expr::Name(name), arguments, body) => { | |
| 23 for expr in arguments { | |
| 24 self.visit_expr(expr); | |
| 25 } | |
| 26 for statement in body { | |
| 27 self.visit_statement(statement); | |
| 28 } | |
| 29 }, | |
| 30 Statement::FunctionDef(_, _, _) => { | |
| 31 println!("Statement:FunctionDef Error"); | |
| 32 panic!() | |
| 33 }, | |
| 34 Statement::If(test, body, orelse) => { | |
| 35 self.visit_expr(test); | |
| 36 for statement in body { | |
| 37 self.visit_statement(statement); | |
| 38 } | |
| 39 for statement in orelse { | |
| 40 self.visit_statement(statement); | |
| 41 } | |
| 42 }, | |
|
6
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
43 Statement::While(test, body, orelse) => { |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
44 self.visit_expr(test); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
45 for statement in body { |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
46 self.visit_statement(statement); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
47 } |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
48 for statement in orelse { |
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6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
49 self.visit_statement(statement); |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
50 } |
|
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
51 }, |
|
5
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
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52 Statement::For(target, iter, body, orelse) => { |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
53 self.visit_expr(target); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
54 self.visit_expr(iter); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
55 for statement in body { |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
56 self.visit_statement(statement); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
57 } |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
58 for statement in orelse { |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
59 self.visit_statement(statement); |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
60 } |
|
ddf372373a77
Add ast.For, ast.UnaryOp, and Sub and Div to ast.BinOp.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
0
diff
changeset
|
61 }, |
| 0 | 62 Statement::Assign(targets, value) => { |
| 63 self.visit_expr(value); | |
| 64 for target in targets { | |
| 65 self.visit_expr(target); | |
| 66 } | |
| 67 }, | |
|
8
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
6
diff
changeset
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68 Statement::AugAssign(target, op, value) => { |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
6
diff
changeset
|
69 self.visit_expr(value); |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
6
diff
changeset
|
70 self.visit_expr(target); |
|
94ff501bf336
Add ast.AugAssign.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
6
diff
changeset
|
71 }, |
| 0 | 72 Statement::Return(expr) => { |
| 73 self.visit_expr(expr); | |
| 74 }, | |
| 75 Statement::ImportFrom(module, names) => { | |
| 76 //self.visit_expr(module); | |
| 77 }, | |
| 78 Statement::Expr(expr) => { | |
| 79 self.visit_expr(expr); | |
| 80 }, | |
|
6
6f2bf13f4cb5
Add ast.While and ast.Break.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
5
diff
changeset
|
81 Statement::Break => {}, |
| 0 | 82 Statement::Error => { |
| 83 println!("Statement::Error"); | |
| 84 panic!() | |
| 85 }, | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 fn visit_expr(&mut self, expr: Expr) -> () { | |
| 90 match expr { | |
| 91 Expr::BinOp(left, op, right) => { | |
| 92 self.visit_expr(*left); | |
| 93 self.visit_expr(*right); | |
| 94 }, | |
| 95 Expr::Compare(left, ops, comparators) => { | |
| 96 self.visit_expr(*left); | |
| 97 }, | |
| 98 Expr::Call(func, args) => { | |
| 99 let func = *func; | |
| 100 let func = match func { | |
| 101 Expr::Name(arg) => arg, | |
| 102 _ => panic!() | |
| 103 }; | |
| 104 for expr in args { | |
| 105 self.visit_expr(expr); | |
| 106 } | |
| 107 }, | |
| 108 Expr::Alias(_, _) => (), | |
| 109 Expr::Name(_) => (), | |
| 110 Expr::NameConstant(value) => (), | |
| 111 Expr::Str(_) => (), | |
| 112 Expr::Num(_) => (), | |
| 113 Expr::Error => { | |
| 114 println!("Expr::Error"); | |
| 115 panic!() | |
| 116 } | |
| 117 } | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 #[allow(dead_code)] | |
| 122 pub fn rewrite_ast(ast: Module) { | |
| 123 let mut typing = Rewrite{}; | |
| 124 typing.visit_module(ast); | |
| 125 } |