source: src/Validate/LabelAddressFixer.cpp @ 11df881

ADTast-experimentalpthread-emulationqualifiedEnum
Last change on this file since 11df881 was 11df881, checked in by Andrew Beach <ajbeach@…>, 2 years ago

Updated documentation on pre-resolver passes, moving code to headers instead of uses. Note that some comments were just copied over, I don't know if they are accurate.

  • Property mode set to 100644
File size: 1.9 KB
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1//
2// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// LabelAddressFixer.cpp -- Create label address expressions.
8//
9// Author           : Andrew Beach
10// Created On       : Fri Nov 12 16:30:00 2021
11// Last Modified By : Andrew Beach
12// Last Modified On : Fri Nov 12 16:30:00 2021
13// Update Count     : 0
14//
15
16#include "Validate/LabelAddressFixer.hpp"
17
18#include "AST/Decl.hpp"
19#include "AST/Expr.hpp"
20#include "AST/Pass.hpp"
21#include "AST/TranslationUnit.hpp"
22
23#include <set>
24
25namespace Validate {
26
27namespace {
28
29struct LabelFinder {
30        std::set<ast::Label> & labels;
31        LabelFinder( std::set<ast::Label> & labels ) : labels( labels ) {}
32        void previsit( const ast::Stmt * stmt ) {
33                for ( const ast::Label & label : stmt->labels ) {
34                        labels.insert( label );
35                }
36        }
37};
38
39struct LabelAddressFixer : public ast::WithGuards {
40        std::set<ast::Label> labels;
41        void previsit( const ast::FunctionDecl * decl );
42        const ast::Expr * postvisit( const ast::AddressExpr * expr );
43};
44
45void LabelAddressFixer::previsit( const ast::FunctionDecl * decl ) {
46        GuardValue( labels );
47        ast::Pass<LabelFinder>::read( decl, labels );
48}
49
50const ast::Expr * LabelAddressFixer::postvisit( const ast::AddressExpr * expr ) {
51        if ( auto inner = expr->arg.as<ast::AddressExpr>() ) {
52                if ( auto nameExpr = inner->arg.as<ast::NameExpr>() ) {
53                        ast::Label label( nameExpr->location, nameExpr->name );
54                        if ( labels.count( label ) ) {
55                                return new ast::LabelAddressExpr( nameExpr->location, std::move( label ) );
56                        }
57                }
58        }
59        return expr;
60}
61
62} // namespace
63
64void fixLabelAddresses( ast::TranslationUnit & translationUnit ) {
65        ast::Pass<LabelAddressFixer>::run( translationUnit );
66}
67
68} // namespace Validate
69
70// Local Variables: //
71// tab-width: 4 //
72// mode: c++ //
73// compile-command: "make install" //
74// End: //
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