source: src/SynTree/Statement.cc@ 4bae7b4

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Statement.cc --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Wed Feb  2 20:19:33 2022
// Update Count     : 90
//

#include "SynTree/Statement.h"

#include <stddef.h>                // for NULL
#include <cassert>                 // for assert, assertf
#include <iostream>                // for operator<<, basic_ostream, endl
#include <list>                    // for list, list<>::const_iterator, _Lis...
#include <string>                  // for operator<<, string, char_traits

#include "Common/SemanticError.h"  // for SemanticError
#include "Common/utility.h"        // for maybeClone, cloneAll, deleteAll
#include "Declaration.h"           // for Declaration
#include "Expression.h"            // for Expression, ConstantExpr
#include "Statement.h"             // for Statement, ForStmt, AsmStmt, Catch...
#include "SynTree/Label.h"         // for Label, operator<<

using namespace std;


Statement::Statement( const list<Label> & labels ) : labels( labels ) {}

void Statement::print( ostream & os, Indenter indent ) const {
        if ( ! labels.empty() ) {
                os << indent << "... Labels: {";
                for ( const Label & l : labels ) {
                        os << l << ",";
                }
                os << "}" << endl;
        }
}

Statement::~Statement() {}

ExprStmt::ExprStmt( Expression * expr ) : Statement(), expr( expr ) {}

ExprStmt::ExprStmt( const ExprStmt & other ) : Statement( other ), expr( maybeClone( other.expr ) ) {}

ExprStmt::~ExprStmt() {
        delete expr;
}

void ExprStmt::print( ostream & os, Indenter indent ) const {
        os << "Expression Statement:" << endl << indent + 1;
        expr->print( os, indent + 1 );
}


AsmStmt::AsmStmt( bool voltile, Expression * instruction, const list<Expression *> output, const list<Expression *> input, const list<ConstantExpr *> clobber, const list<Label> gotolabels ) : Statement(), voltile( voltile ), instruction( instruction ), output( output ), input( input ), clobber( clobber ), gotolabels( gotolabels ) {}

AsmStmt::AsmStmt( const AsmStmt & other ) : Statement( other ), voltile( other.voltile ), instruction( maybeClone( other.instruction ) ), gotolabels( other.gotolabels ) {
  cloneAll( other.output, output );
  cloneAll( other.input, input );
  cloneAll( other.clobber, clobber );
}

AsmStmt::~AsmStmt() {
        delete instruction;
        deleteAll( output );
        deleteAll( input );
        deleteAll( clobber );
}

void AsmStmt::print( ostream & os, Indenter indent ) const {
        os << "Assembler Statement:" << endl;
        os << indent + 1 << "instruction: " << endl << indent;
        instruction->print( os, indent + 1 );
        if ( ! output.empty() ) {
                os << endl << indent + 1 << "output: " << endl;
                printAll( output, os, indent + 1 );
        } // if
        if ( ! input.empty() ) {
                os << indent + 1 << "input: " << endl;
                printAll( input, os, indent + 1 );
        } // if
        if ( ! clobber.empty() ) {
                os << indent + 1 << "clobber: " << endl;
                printAll( clobber, os, indent + 1 );
        } // if
}


DirectiveStmt::DirectiveStmt( const string & directive ) : Statement(), directive( directive ) {}

void DirectiveStmt::print( ostream & os, Indenter ) const {
        os << "GCC Directive:" << directive << endl;
}


const char * BranchStmt::brType[] = {
        "Goto", "Break", "Continue", "Fall Through", "Fall Through Default",
};

BranchStmt::BranchStmt( Label target, Type type ) :
        Statement(), originalTarget( target ), target( target ), computedTarget( nullptr ), type( type ) {
        //actually this is a syntactic error signaled by the parser
        if ( type == BranchStmt::Goto && target.empty() ) {
                SemanticError( target.get_statement()->location, "goto without target");
        }
}

BranchStmt::BranchStmt( Expression * computedTarget, Type type ) :
        Statement(), computedTarget( computedTarget ), type( type ) {
        if ( type != BranchStmt::Goto || computedTarget == nullptr ) {
                SemanticError( computedTarget->location, "Computed target not valid in branch statement");
        }
}

void BranchStmt::print( ostream & os, Indenter indent ) const {
        assertf(type < BranchStmts, "CFA internal error: invalid branch statement" );
        os << "Branch (" << brType[type] << ")" << endl ;
        if ( target != "" ) os << indent + 1 << "with target: " << target << endl;
        if ( originalTarget != "" ) os << indent + 1 << "with original target: " << originalTarget << endl;
        if ( computedTarget != nullptr ) os << indent + 1 << "with computed target: " << computedTarget << endl;
}

ReturnStmt::ReturnStmt( Expression * expr ) : Statement(), expr( expr ) {}

ReturnStmt::ReturnStmt( const ReturnStmt & other ) : Statement( other ), expr( maybeClone( other.expr ) ) {}

ReturnStmt::~ReturnStmt() {
        delete expr;
}

void ReturnStmt::print( ostream & os, Indenter indent ) const {
        os << "Return Statement, returning: ";
        if ( expr != nullptr ) {
                os << endl << indent + 1;
                expr->print( os, indent + 1 );
        }
        os << endl;
}

IfStmt::IfStmt( Expression * condition, Statement * then, Statement * else_, const list<Statement *> initialization ):
        Statement(), condition( condition ), then( then ), else_( else_ ), initialization( initialization ) {}

IfStmt::IfStmt( const IfStmt & other ) :
        Statement( other ), condition( maybeClone( other.condition ) ), then( maybeClone( other.then ) ), else_( maybeClone( other.else_ ) ) {
        cloneAll( other.initialization, initialization );
}

IfStmt::~IfStmt() {
        deleteAll( initialization );
        delete condition;
        delete then;
        delete else_;
}

void IfStmt::print( ostream & os, Indenter indent ) const {
        os << "If on condition: " << endl;
        os << indent + 1;
        condition->print( os, indent + 1 );

        if ( !initialization.empty() ) {
                os << indent << "... with initialization: \n";
                for ( const Statement * stmt : initialization ) {
                        os << indent + 1;
                        stmt->print( os, indent + 1 );
                }
                os << endl;
        }

        os << indent << "... then: " << endl;

        os << indent + 1;
        then->print( os, indent + 1 );

        if ( else_ != nullptr ) {
                os << indent << "... else: " << endl;
                os << indent + 1;
                else_->print( os, indent + 1 );
        } // if
}

SwitchStmt::SwitchStmt( Expression * condition, const list<Statement *> & statements ):
        Statement(), condition( condition ), statements( statements ) {
}

SwitchStmt::SwitchStmt( const SwitchStmt & other ):
        Statement( other ), condition( maybeClone( other.condition ) ) {
        cloneAll( other.statements, statements );
}

SwitchStmt::~SwitchStmt() {
        delete condition;
        // destroy statements
        deleteAll( statements );
}

void SwitchStmt::print( ostream & os, Indenter indent ) const {
        os << "Switch on condition: ";
        condition->print( os );
        os << endl;

        for ( const Statement * stmt : statements ) {
                stmt->print( os, indent + 1 );
        }
}

CaseStmt::CaseStmt( Expression * condition, const list<Statement *> & statements, bool deflt ) :
                Statement(), condition( condition ), stmts( statements ), _isDefault( deflt ) {
        if ( isDefault() && condition != nullptr ) SemanticError( condition, "default case with condition: " );
}

CaseStmt::CaseStmt( const CaseStmt & other ) :
                Statement( other ), condition( maybeClone(other.condition ) ), _isDefault( other._isDefault ) {
        cloneAll( other.stmts, stmts );
}

CaseStmt::~CaseStmt() {
        delete condition;
        deleteAll( stmts );
}

CaseStmt * CaseStmt::makeDefault( const list<Label> & labels, list<Statement *> stmts ) {
        CaseStmt * stmt = new CaseStmt( nullptr, stmts, true );
        stmt->labels = labels;
        return stmt;
}

void CaseStmt::print( ostream & os, Indenter indent ) const {
        if ( isDefault() ) os << indent << "Default ";
        else {
                os << indent << "Case ";
                condition->print( os, indent );
        } // if
        os << endl;

        for ( Statement * stmt : stmts ) {
                os << indent + 1;
                stmt->print( os, indent + 1 );
        }
}

WhileDoStmt::WhileDoStmt( Expression * condition, Statement * body, const list< Statement * > & initialization, bool isDoWhile ):
        Statement(), condition( condition ), body( body ), else_( nullptr ), initialization( initialization ), isDoWhile( isDoWhile) {
}

WhileDoStmt::WhileDoStmt( Expression * condition, Statement * body, Statement * else_, const list< Statement * > & initialization, bool isDoWhile ):
        Statement(), condition( condition), body( body ), else_( else_ ), initialization( initialization ), isDoWhile( isDoWhile) {
}

WhileDoStmt::WhileDoStmt( const WhileDoStmt & other ):
        Statement( other ), condition( maybeClone( other.condition ) ), body( maybeClone( other.body ) ), isDoWhile( other.isDoWhile ) {
}

WhileDoStmt::~WhileDoStmt() {
        delete body;
        delete condition;
}

void WhileDoStmt::print( ostream & os, Indenter indent ) const {
        os << "While on condition: " << endl ;
        condition->print( os, indent + 1 );

        os << indent << "... with body: " << endl;

        if ( body != nullptr ) body->print( os, indent + 1 );
}

ForStmt::ForStmt( const list<Statement *> initialization, Expression * condition, Expression * increment, Statement * body, Statement * else_ ):
        Statement(), initialization( initialization ), condition( condition ), increment( increment ), body( body ), else_( else_ ) {
}

ForStmt::ForStmt( const ForStmt & other ):
        Statement( other ), condition( maybeClone( other.condition ) ), increment( maybeClone( other.increment ) ), body( maybeClone( other.body ) ), else_( maybeClone( other.else_ ) ) {
                cloneAll( other.initialization, initialization );

}

ForStmt::~ForStmt() {
        deleteAll( initialization );
        delete condition;
        delete increment;
        delete body;
        delete else_;
}

void ForStmt::print( ostream & os, Indenter indent ) const {
        Statement::print( os, indent ); // print labels

        os << "For Statement" << endl;

        if ( ! initialization.empty() ) {
                os << indent << "... initialization: \n";
                for ( Statement * stmt : initialization ) {
                        os << indent + 1;
                        stmt->print( os, indent + 1 );
                }
        }

        if ( condition != nullptr ) {
                os << indent << "... condition: \n" << indent + 1;
                condition->print( os, indent + 1 );
        }

        if ( increment != nullptr ) {
                os << "\n" << indent << "... increment: \n" << indent + 1;
                increment->print( os, indent + 1 );
        }

        if ( body != nullptr ) {
                os << "\n" << indent << "... with body: \n" << indent + 1;
                body->print( os, indent + 1 );
        }

        if ( else_ != nullptr ) {
                os << "\n" << indent << "... with body: \n" << indent + 1;
                else_->print( os, indent + 1 );
        }
        os << endl;
}

ThrowStmt::ThrowStmt( Kind kind, Expression * expr, Expression * target ) :
                Statement(), kind(kind), expr(expr), target(target)     {
        assertf(Resume == kind || nullptr == target, "Non-local termination throw is not accepted." );
}

ThrowStmt::ThrowStmt( const ThrowStmt & other ) :
        Statement ( other ), kind( other.kind ), expr( maybeClone( other.expr ) ), target( maybeClone( other.target ) ) {
}

ThrowStmt::~ThrowStmt() {
        delete expr;
        delete target;
}

void ThrowStmt::print( ostream & os, Indenter indent) const {
        if ( target ) os << "Non-Local ";
        os << "Throw Statement, raising: ";
        expr->print(os, indent + 1);
        if ( target ) {
                os << "... at: ";
                target->print(os, indent + 1);
        }
}

TryStmt::TryStmt( CompoundStmt * tryBlock, const list<CatchStmt *> & handlers, FinallyStmt * finallyBlock ) :
        Statement(), block( tryBlock ),  handlers( handlers ), finallyBlock( finallyBlock ) {
}

TryStmt::TryStmt( const TryStmt & other ) : Statement( other ), block( maybeClone( other.block ) ), finallyBlock( maybeClone( other.finallyBlock ) ) {
        cloneAll( other.handlers, handlers );
}

TryStmt::~TryStmt() {
        delete block;
        deleteAll( handlers );
        delete finallyBlock;
}

void TryStmt::print( ostream & os, Indenter indent ) const {
        os << "Try Statement" << endl;
        os << indent << "... with block:" << endl << indent + 1;
        block->print( os, indent + 1 );

        // handlers
        os << indent << "... and handlers:" << endl;
        for ( const CatchStmt * stmt : handlers ) {
                os << indent + 1;
                stmt->print( os, indent + 1 );
        }

        // finally block
        if ( finallyBlock != nullptr ) {
                os << indent << "... and finally:" << endl << indent + 1;
                finallyBlock->print( os, indent + 1 );
        } // if
}

CatchStmt::CatchStmt( Kind kind, Declaration * decl, Expression * cond, Statement * body ) :
        Statement(), kind ( kind ), decl ( decl ), cond ( cond ), body( body ) {
                assertf( decl, "Catch clause must have a declaration." );
}

CatchStmt::CatchStmt( const CatchStmt & other ) :
        Statement( other ), kind ( other.kind ), decl ( maybeClone( other.decl ) ), cond ( maybeClone( other.cond ) ), body( maybeClone( other.body ) ) {
}

CatchStmt::~CatchStmt() {
        delete decl;
        delete body;
}

void CatchStmt::print( ostream & os, Indenter indent ) const {
        os << "Catch " << ((Terminate == kind) ? "Terminate" : "Resume") << " Statement" << endl;

        os << indent << "... catching: ";
        decl->printShort( os, indent + 1 );
        os << endl;

        if ( cond ) {
                os << indent << "... with conditional:" << endl << indent + 1;
                cond->print( os, indent + 1 );
        }

        os << indent << "... with block:" << endl;
        os << indent + 1;
        body->print( os, indent + 1 );
}


FinallyStmt::FinallyStmt( CompoundStmt * block ) : Statement(), block( block ) {
}

FinallyStmt::FinallyStmt( const FinallyStmt & other ) : Statement( other ), block( maybeClone( other.block ) ) {
}

FinallyStmt::~FinallyStmt() {
        delete block;
}

void FinallyStmt::print( ostream & os, Indenter indent ) const {
        os << "Finally Statement" << endl;
        os << indent << "... with block:" << endl << indent + 1;
        block->print( os, indent + 1 );
}

SuspendStmt::SuspendStmt( const SuspendStmt & other )
        : Statement( other )
        , then( maybeClone(other.then) )
{}

SuspendStmt::~SuspendStmt() {
        delete then;
}

void SuspendStmt::print( ostream & os, Indenter indent ) const {
        os << "Suspend Statement";
        switch (type) {
                case None     : os << " with implicit target"; break;
                case Generator: os << " for generator"       ; break;
                case Coroutine: os << " for coroutine"       ; break;
        }
        os << endl;
        indent += 1;

        if(then) {
                os << indent << " with post statement :" << endl;
                then->print( os, indent + 1);
        }
}

WaitForStmt::WaitForStmt() : Statement() {
        timeout.time      = nullptr;
        timeout.statement = nullptr;
        timeout.condition = nullptr;
        orelse .statement = nullptr;
        orelse .condition = nullptr;
}

WaitForStmt::WaitForStmt( const WaitForStmt & other ) : Statement( other ) {
        clauses.reserve( other.clauses.size() );
        for( auto & ocl : other.clauses ) {
                clauses.emplace_back();
                clauses.back().target.function = ocl.target.function->clone();
                cloneAll( ocl.target.arguments, clauses.back().target.arguments );
                clauses.back().statement = ocl.statement->clone();
                clauses.back().condition = ocl.condition->clone();
        }

        timeout.time      = other.timeout.time     ->clone();
        timeout.statement = other.timeout.statement->clone();
        timeout.condition = other.timeout.condition->clone();
        orelse .statement = other.orelse .statement->clone();
        orelse .condition = other.orelse .condition->clone();
}

WaitForStmt::~WaitForStmt() {
        for( auto & clause : clauses ) {
                delete clause.target.function;
                deleteAll( clause.target.arguments );
                delete clause.statement;
                delete clause.condition;
        }

        delete timeout.time;
        delete timeout.statement;
        delete timeout.condition;

        delete orelse.statement;
        delete orelse.condition;
}

void WaitForStmt::print( ostream & os, Indenter indent ) const {
        os << "Waitfor Statement" << endl;
        indent += 1;
        for( auto & clause : clauses ) {
                os << indent << "target function :";
                if(clause.target.function) { clause.target.function->print(os, indent + 1); }
                os << endl << indent << "with arguments :" << endl;
                for( auto & thing : clause.target.arguments) {
                        if(thing) { thing->print(os, indent + 1); }
                }
                os << indent << " with statment :" << endl;
                if(clause.statement) { clause.statement->print(os, indent + 1); }

                os << indent << " with condition :" << endl;
                if(clause.condition) { clause.condition->print(os, indent + 1); }
        }

        os << indent << " timeout of :" << endl;
        if(timeout.time) { timeout.time->print(os, indent + 1); }

        os << indent << " with statment :" << endl;
        if(timeout.statement) { timeout.statement->print(os, indent + 1); }

        os << indent << " with condition :" << endl;
        if(timeout.condition) { timeout.condition->print(os, indent + 1); }


        os << indent << " else :" << endl;
        if(orelse.statement) { orelse.statement->print(os, indent + 1); }

        os << indent << " with condition :" << endl;
        if(orelse.condition) { orelse.condition->print(os, indent + 1); }
}


WithStmt::WithStmt( const list< Expression * > & exprs, Statement * stmt ) : Declaration("", noStorageClasses, LinkageSpec::Cforall), exprs( exprs ), stmt( stmt ) {}
WithStmt::WithStmt( const WithStmt & other ) : Declaration( other ), stmt( maybeClone( other.stmt ) ) {
        cloneAll( other.exprs, exprs );
}
WithStmt::~WithStmt() {
        deleteAll( exprs );
        delete stmt;
}

void WithStmt::print( ostream & os, Indenter indent ) const {
        os << "With statement" << endl;
        os << indent << "... with expressions: " << endl;
        printAll( exprs, os, indent + 1 );
        os << indent << "... with statement:" << endl << indent + 1;
        stmt->print( os, indent + 1 );
}


NullStmt::NullStmt( const list<Label> & labels ) : Statement( labels ) {
}

void NullStmt::print( ostream & os, Indenter indent ) const {
        os << "Null Statement" << endl;
        Statement::print( os, indent );
}

ImplicitCtorDtorStmt::ImplicitCtorDtorStmt( Statement * callStmt ) : Statement(), callStmt( callStmt ) {
        assert( callStmt );
}

ImplicitCtorDtorStmt::ImplicitCtorDtorStmt( const ImplicitCtorDtorStmt & other ) : Statement( other ), callStmt( maybeClone( other.callStmt ) ) {
}

ImplicitCtorDtorStmt::~ImplicitCtorDtorStmt() {
        delete callStmt;
}

void ImplicitCtorDtorStmt::print( ostream & os, Indenter indent ) const {
        os << "Implicit Ctor Dtor Statement" << endl;
        os << indent << "... with Ctor/Dtor: ";
        callStmt->print( os, indent + 1);
        os << endl;
}

MutexStmt::MutexStmt( Statement * stmt, const list<Expression *> mutexObjs )
        : Statement(), stmt( stmt ), mutexObjs( mutexObjs ) { }

MutexStmt::MutexStmt( const MutexStmt & other ) : Statement( other ), stmt( maybeClone( other.stmt ) ) {
        cloneAll( other.mutexObjs, mutexObjs );
}

MutexStmt::~MutexStmt() {
        deleteAll( mutexObjs );
        delete stmt;
}

void MutexStmt::print( ostream & os, Indenter indent ) const {
        os << "Mutex Statement" << endl;
        os << indent << "... with Expressions: " << endl;
        for (auto * obj : mutexObjs) {
                os << indent + 1;
                obj->print( os, indent + 1);
                os << endl;
        }
        os << indent << "... with Statement: " << endl << indent + 1;
        stmt->print( os, indent + 1 );
}

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //