Changeset 5cbacf1 for src/Validate/HandleAttributes.cc

Timestamp:

Jul 30, 2018, 4:43:48 PM (6 years ago)

Author:

Rob Schluntz <rschlunt@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, no_list, persistent-indexer, pthread-emulation, qualifiedEnum

Children:

ba4a1d8

Parents:

05e6eb5

git-author:

Rob Schluntz <rschlunt@…> (07/30/18 16:30:06)

git-committer:

Rob Schluntz <rschlunt@…> (07/30/18 16:43:48)

Message:

Refactor eval into Common

File:

• src/Validate/HandleAttributes.cc (modified) (2 diffs)

src/Validate/HandleAttributes.cc

@@ -16 +16 @@
 #include "HandleAttributes.h"
 
-#include <utility> // for pair
-
 #include "CompilationState.h"
 #include "Common/PassVisitor.h"
 #include "Common/SemanticError.h"
-#include "InitTweak/InitTweak.h"
 #include "ResolvExpr/Resolver.h"
 #include "SynTree/Attribute.h"
@@ -29 +26 @@
 namespace Validate {
         namespace {
-                std::pair<long long int, bool> eval(Expression * expr);
-
-                struct Eval : public WithShortCircuiting {
-                        long long int value = 0;
-                        bool valid = true;
-
-                        void previsit( BaseSyntaxNode * ) { visit_children = false; }
-                        void postvisit( BaseSyntaxNode * ) { valid = false; }
-
-                        void postvisit( ConstantExpr * expr ) {
-                                value = expr->intValue();
-                        }
-
-                        void postvisit( CastExpr * expr ) {
-                                auto arg = eval(expr->arg);
-                                valid = arg.second;
-                                value = arg.first;
-                                // TODO: perform type conversion on value if valid
-                        }
-
-                        void postvisit( VariableExpr * expr ) {
-                                if ( EnumInstType * inst = dynamic_cast<EnumInstType *>(expr->result) ) {
-                                        if ( EnumDecl * decl = inst->baseEnum ) {
-                                                if ( decl->valueOf( expr->var, value ) ) { // value filled by valueOf
-                                                        return;
-                                                }
-                                        }
-                                }
-                                valid = false;
-                        }
-
-                        void postvisit( ApplicationExpr * expr ) {
-                                DeclarationWithType * function = InitTweak::getFunction(expr);
-                                if ( ! function || function->linkage != LinkageSpec::Intrinsic ) { valid = false; return; }
-                                const std::string & fname = function->name;
-                                assertf( expr->args.size() == 1 || expr->args.size() == 2, "Intrinsic function with %zd arguments: %s", expr->args.size(), fname.c_str() );
-                                std::pair<long long int, bool> arg1, arg2;
-                                arg1 = eval(expr->args.front());
-                                valid = valid && arg1.second;
-                                if ( ! valid ) return;
-                                if ( expr->args.size() == 2 ) {
-                                        arg2 = eval(expr->args.back());
-                                        valid = valid && arg2.second;
-                                        if ( ! valid ) return;
-                                }
-                                if (fname == "?+?") {
-                                        value = arg1.first + arg2.first;
-                                } else if (fname == "?-?") {
-                                        value = arg1.first - arg2.first;
-                                } else if (fname == "?*?") {
-                                        value = arg1.first * arg2.first;
-                                } else if (fname == "?/?") {
-                                        value = arg1.first / arg2.first;
-                                } else if (fname == "?%?") {
-                                        value = arg1.first % arg2.first;
-                                } else {
-                                        valid = false;
-                                }
-                                // TODO: implement other intrinsic functions
-                        }
-                };
-
-                std::pair<long long int, bool> eval(Expression * expr) {
-                        PassVisitor<Eval> ev;
-                        if (expr) {
-                                expr->accept(ev);
-                                return std::make_pair(ev.pass.value, ev.pass.valid);
-                        } else {
-                                return std::make_pair(0, false);
-                        }
-                }
-
                 struct HandleAttributes : public WithIndexer {
                         void previsit( ObjectDecl * decl );