From 9885c972a6bfa6f856e505cdd90d9b71fdbdadaf Mon Sep 17 00:00:00 2001 From: Tim Foley Date: Mon, 14 Aug 2017 14:48:37 -0700 Subject: Add an explicit `Name` type Fixes #23 Up to this point, the compiler has used the ordinary `String` type to represent declaration names, which means a bunch of lookup structures throughout the compiler were string-to-whatever maps, which can reduce efficiency. It also means that things like the `Token` type end up carying a `String` by value and paying for things like reference-counting. This change adds a `Name` type that is used to represent names of variables, types, macros, etc. Names are cached and unique'd globally for a session, and the string-to-name mapping gets done during lexing. From that point on, most mapping is from pointers, which should make all the various table lookups faster. More importantly (possibly), this brings us one step closer to being able to pool-allocate the AST nodes. --- source/slang/name.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 source/slang/name.cpp (limited to 'source/slang/name.cpp') diff --git a/source/slang/name.cpp b/source/slang/name.cpp new file mode 100644 index 000000000..995bce19f --- /dev/null +++ b/source/slang/name.cpp @@ -0,0 +1,24 @@ +// name.cpp +#include "name.h" + +namespace Slang { + +String getText(Name* name) +{ + if (!name) return String(); + return name->text; +} + +Name* NamePool::getName(String const& text) +{ + RefPtr name; + if (rootPool->names.TryGetValue(text, name)) + return name; + + name = new Name(); + name->text = text; + rootPool->names.Add(text, name); + return name; +} + +} // namespace Slang -- cgit v1.2.3