62 lines
1.4 KiB
Rust
62 lines
1.4 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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/*!
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Module that constructs a control-flow graph representing an item.
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Uses `Graph` as the underlying representation.
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*/
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use middle::graph;
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use middle::ty;
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use middle::typeck;
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use std::hashmap::HashMap;
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use syntax::ast;
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use syntax::opt_vec::OptVec;
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mod construct;
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pub struct CFG {
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exit_map: HashMap<ast::NodeId, CFGIndex>,
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graph: CFGGraph,
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entry: CFGIndex,
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exit: CFGIndex,
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}
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pub struct CFGNodeData {
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id: ast::NodeId
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}
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pub struct CFGEdgeData {
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exiting_scopes: OptVec<ast::NodeId>
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}
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pub type CFGIndex = graph::NodeIndex;
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pub type CFGGraph = graph::Graph<CFGNodeData, CFGEdgeData>;
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pub type CFGNode = graph::Node<CFGNodeData>;
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pub type CFGEdge = graph::Edge<CFGEdgeData>;
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pub struct CFGIndices {
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entry: CFGIndex,
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exit: CFGIndex,
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}
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impl CFG {
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pub fn new(tcx: ty::ctxt,
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method_map: typeck::method_map,
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blk: &ast::Block) -> CFG {
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construct::construct(tcx, method_map, blk)
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}
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}
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