Changeset 1d7b0a8

Timestamp:

Jun 11, 2018, 2:50:06 PM (6 years ago)

Author:

Aaron Moss <a3moss@…>

Branches:

new-env

Children:

6d53e779, 982f95d

Parents:

8e18b8e

Message:

Move AlternativeFinder? find flags to ResolvMode? struct

Location:

src/ResolvExpr

Files:

• AlternativeFinder.cc (modified) (5 diffs)
• AlternativeFinder.h (modified) (2 diffs)
• ResolvMode.h (added)
• Resolver.cc (modified) (5 diffs)

src/ResolvExpr/AlternativeFinder.cc

@@ -233 +233 @@
         }
 
-        void AlternativeFinder::find( Expression *expr, bool adjust, bool prune, bool failFast ) {
+        void AlternativeFinder::find( Expression *expr, ResolvMode mode ) {
                 PassVisitor<Finder> finder( *this );
                 expr->accept( finder );
-                if ( failFast && alternatives.empty() ) {
+                if ( mode.failFast && alternatives.empty() ) {
                         PRINT(
                                 std::cerr << "No reasonable alternatives for expression " << expr << std::endl;
@@ -242 +242 @@
                         SemanticError( expr, "No reasonable alternatives for expression " );
                 }
-                if ( prune ) {
+                if ( mode.prune ) {
                         auto oldsize = alternatives.size();
                         PRINT(
@@ -250 +250 @@
                         AltList pruned;
                         pruneAlternatives( alternatives.begin(), alternatives.end(), back_inserter( pruned ) );
-                        if ( failFast && pruned.empty() ) {
+                        if ( mode.failFast && pruned.empty() ) {
                                 std::ostringstream stream;
                                 AltList winners;
@@ -269 +269 @@
                 }
                 // adjust types after pruning so that types substituted by pruneAlternatives are correctly adjusted
-                for ( AltList::iterator i = alternatives.begin(); i != alternatives.end(); ++i ) {
-                        if ( adjust ) {
-                                adjustExprType( i->expr->get_result(), i->env, indexer );
+                if ( mode.adjust ) {
+                        for ( Alternative& i : alternatives ) {
+                                adjustExprType( i.expr->result, i.env, indexer );
                         }
                 }
@@ -283 +283 @@
 
         void AlternativeFinder::findWithAdjustment( Expression *expr ) {
-                find( expr, true );
+                find( expr, ResolvMode::withAdjustment() );
         }
 
         void AlternativeFinder::findWithoutPrune( Expression * expr ) {
-                find( expr, true, false );
+                find( expr, ResolvMode::withoutPrune() );
         }
 
         void AlternativeFinder::maybeFind( Expression * expr ) {
-                find( expr, true, true, false );
+                find( expr, ResolvMode::withoutFailFast() );
         }
 

src/ResolvExpr/AlternativeFinder.h

@@ -22 +22 @@
 #include "Alternative.h"                 // for AltList, Alternative
 #include "ExplodedActual.h"              // for ExplodedActual
+#include "ResolvMode.h"                  // for ResolvMode
 #include "ResolvExpr/Cost.h"             // for Cost, Cost::infinity
 #include "ResolvExpr/TypeEnvironment.h"  // for AssertionSet, OpenVarSet
@@ -68 +69 @@
                 }
 
-                void find( Expression *expr, bool adjust = false, bool prune = true, bool failFast = true );
+                void find( Expression *expr, ResolvMode mode = ResolvMode{} );
                 /// Calls find with the adjust flag set; adjustment turns array and function types into equivalent pointer types
                 void findWithAdjustment( Expression *expr );

src/ResolvExpr/Resolver.cc

@@ -33 +33 @@
 #include "ResolveTypeof.h"               // for resolveTypeof
 #include "Resolver.h"
+#include "ResolvMode.h"                  // for ResolvMode
 #include "SymTab/Autogen.h"              // for SizeType
 #include "SymTab/Indexer.h"              // for Indexer
@@ -165 +166 @@
 
         namespace {
-                void findUnfinishedKindExpression(Expression * untyped, Alternative & alt, const SymTab::Indexer & indexer, const std::string & kindStr, std::function<bool(const Alternative &)> pred, bool adjust = false, bool prune = true, bool failFast = true) {
+                void findUnfinishedKindExpression( Expression * untyped, Alternative & alt, const SymTab::Indexer & indexer, const std::string & kindStr, std::function<bool(const Alternative &)> pred, ResolvMode mode = ResolvMode{} ) {
                         assertf( untyped, "expected a non-null expression." );
 
@@ -172 +173 @@
                         TypeEnvironment env;
                         AlternativeFinder finder( indexer, env );
-                        finder.find( untyped, adjust, prune, failFast );
+                        finder.find( untyped, mode );
 
                         #if 0
@@ -218 +219 @@
 
                 /// resolve `untyped` to the expression whose alternative satisfies `pred` with the lowest cost; kindStr is used for providing better error messages
-                void findKindExpression(Expression *& untyped, const SymTab::Indexer & indexer, const std::string & kindStr, std::function<bool(const Alternative &)> pred, bool adjust = false, bool prune = true, bool failFast = true) {
+                void findKindExpression(Expression *& untyped, const SymTab::Indexer & indexer, const std::string & kindStr, std::function<bool(const Alternative &)> pred, ResolvMode mode = ResolvMode{}) {
                         if ( ! untyped ) return;
                         Alternative choice;
-                        findUnfinishedKindExpression( untyped, choice, indexer, kindStr, pred, adjust, prune, failFast );
+                        findUnfinishedKindExpression( untyped, choice, indexer, kindStr, pred, mode );
                         finishExpr( choice.expr, choice.env, untyped->env );
                         untyped = choice.expr;
@@ -249 +250 @@
                 // set up and resolve expression cast to void
                 Alternative choice;
-                findUnfinishedKindExpression( untyped, choice, indexer, "", standardAlternativeFilter, true );
+                findUnfinishedKindExpression( untyped, choice, indexer, "", standardAlternativeFilter, ResolvMode::withAdjustment() );
                 CastExpr * castExpr = strict_dynamic_cast< CastExpr * >( choice.expr );
                 env = std::move( choice.env );