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| author | John Hodge (sonata) <tpg@mutabah.net> | 2014-12-23 12:06:25 +0800 |
|---|---|---|
| committer | John Hodge (sonata) <tpg@mutabah.net> | 2014-12-23 12:06:25 +0800 |
| commit | 04dd6b05f945c944c13431baa509ec628ac26f41 (patch) | |
| tree | 5a3d67f4f875481057118a3c553abf5ae998a548 /src/macros.hpp | |
| parent | 89771222961d699f5ca6f586033b5fb915ced431 (diff) | |
| download | mrust-04dd6b05f945c944c13431baa509ec628ac26f41.tar.gz | |
Move source files to src/ folder
Diffstat (limited to 'src/macros.hpp')
| -rw-r--r-- | src/macros.hpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/macros.hpp b/src/macros.hpp new file mode 100644 index 00000000..2618825b --- /dev/null +++ b/src/macros.hpp @@ -0,0 +1,94 @@ +#ifndef MACROS_HPP_INCLUDED
+#define MACROS_HPP_INCLUDED
+
+#include "parse/lex.hpp"
+#include <map>
+#include <memory>
+#include <cstring>
+
+class MacroExpander;
+
+class MacroRuleEnt
+{
+ friend class MacroExpander;
+
+ Token tok;
+ ::std::string name;
+public:
+ MacroRuleEnt(Token tok):
+ tok(tok),
+ name("")
+ {
+ }
+ MacroRuleEnt(::std::string name):
+ name(name)
+ {
+ }
+};
+struct MacroPatEnt
+{
+ Token tok;
+ ::std::string name;
+ enum Type {
+ PAT_TOKEN,
+ PAT_TT,
+ PAT_IDENT,
+ PAT_PATH,
+ PAT_EXPR,
+ PAT_STMT,
+ PAT_BLOCK,
+ } type;
+
+ MacroPatEnt(::std::string name, Type type):
+ tok(),
+ name(name),
+ type(type)
+ {
+ }
+};
+
+/// A rule within a macro_rules! blcok
+class MacroRule
+{
+public:
+ ::std::vector<MacroPatEnt> m_pattern;
+ ::std::vector<MacroRuleEnt> m_contents;
+};
+
+/// A sigle 'macro_rules!' block
+typedef ::std::vector<MacroRule> MacroRules;
+
+struct cmp_str {
+ bool operator()(const char* a, const char* b) const {
+ return ::std::strcmp(a, b) < 0;
+ }
+};
+
+class MacroExpander:
+ public TokenStream
+{
+ typedef ::std::map<const char*, TokenTree, cmp_str> t_mappings;
+ const t_mappings m_mappings;
+ const ::std::vector<MacroRuleEnt>& m_contents;
+ size_t m_ofs;
+
+ ::std::auto_ptr<TTStream> m_ttstream;
+public:
+ MacroExpander(const MacroExpander& x):
+ m_mappings(x.m_mappings),
+ m_contents(x.m_contents),
+ m_ofs(0)
+ {
+ }
+ MacroExpander(const ::std::vector<MacroRuleEnt>& contents, t_mappings mappings):
+ m_mappings(mappings),
+ m_contents(contents),
+ m_ofs(0)
+ {
+ }
+ virtual Token realGetToken();
+};
+
+extern MacroExpander Macro_Invoke(const char* name, TokenTree input);
+
+#endif // MACROS_HPP_INCLUDED
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