source: src/SynTree/Constant.cc @ aeb5d0d

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change on this file since aeb5d0d was c36298d, checked in by Michael Brooks <mlbrooks@…>, 5 years ago

Fixed handling of "literals.cfa" string-detail test cases by simplifying constant analysis. Now a ConstantExpr? is a minial passthrough from parser to code generator, with special-case analysis only for integer values. Awareness of how to build a string-constant type is back in ExpressionNode?.cc; now, this knowlede is only needed there. AST conversion no longer specializes string-int-float constants; it just converts types and passes values through. Unused constant API features are removed, notably from-to-float and from-string.

  • Property mode set to 100644
File size: 2.3 KB
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1//
2// Cforall Version 1.0.0 Copyright (C) 2015 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// Constant.cc --
8//
9// Author           : Richard C. Bilson
10// Created On       : Mon May 18 07:44:20 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Wed Feb 13 18:11:22 2019
13// Update Count     : 32
14//
15
16#include <cassert>   // for strict_dynamic_cast, assertf
17#include <iostream>  // for operator<<, ostream, basic_ostream
18#include <string>    // for to_string, string, char_traits, operator<<
19
20#include "Constant.h"
21#include "Expression.h" // for ConstantExpr
22#include "Type.h"    // for BasicType, Type, Type::Qualifiers, PointerType
23
24Constant::Constant( Type * type, std::string rep, std::optional<unsigned long long> ival ) : type( type ), rep( rep ), ival( ival ) {}
25
26Constant::Constant( const Constant &other ) : BaseSyntaxNode( other ), rep( other.rep ), ival( other.ival ) {
27        type = other.type->clone();
28}
29
30Constant::~Constant() { delete type; }
31
32Constant Constant::from_bool( bool b ) {
33        return Constant( new BasicType( Type::Qualifiers(), BasicType::Bool ), b ? "1" : "0" , (unsigned long long int)b );
34}
35
36Constant Constant::from_int( int i ) {
37        return Constant( new BasicType( Type::Qualifiers(), BasicType::SignedInt ), std::to_string( i ), (unsigned long long int)i );
38}
39
40Constant Constant::from_ulong( unsigned long i ) {
41        return Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), std::to_string( i ), (unsigned long long int)i );
42}
43
44Constant Constant::null( Type * ptrtype ) {
45        if ( nullptr == ptrtype ) {
46                ptrtype = new PointerType(
47                        Type::Qualifiers(),
48                        new VoidType( Type::Qualifiers() )
49                        );
50        }
51
52        return Constant( ptrtype, "0", (unsigned long long int)0 );
53}
54
55unsigned long long Constant::get_ival() const {
56        assertf( strict_dynamic_cast<BasicType*>(type)->isInteger(), "Attempt to retrieve ival from non-integer constant." );
57        return ival.value();
58}
59
60void Constant::print( std::ostream &os, Indenter ) const {
61        os << "(" << rep << " " << (ival ? toString(ival.value()) : "") ;
62        if ( type ) {
63                os << ": ";
64                type->print( os );
65        } // if
66  os << ")";
67}
68
69// Local Variables: //
70// tab-width: 4 //
71// mode: c++ //
72// compile-command: "make install" //
73// End: //
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