diff options
| author | John Hodge (bugs) <tpg@mutabah.net> | 2014-11-22 23:36:20 +0800 |
|---|---|---|
| committer | John Hodge (bugs) <tpg@mutabah.net> | 2014-11-22 23:36:20 +0800 |
| commit | 7ad1a8b4b40784e0a10bd453c75dd0dcf123d5f1 (patch) | |
| tree | 0172ed546bdb00e86297d8d36d7cb0a0a1d111f3 /parse/root.cpp | |
| download | mrust-7ad1a8b4b40784e0a10bd453c75dd0dcf123d5f1.tar.gz | |
Initial commit, lexer structurally complete, parsing hacking up
Diffstat (limited to 'parse/root.cpp')
| -rw-r--r-- | parse/root.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/parse/root.cpp b/parse/root.cpp new file mode 100644 index 00000000..620a1fce --- /dev/null +++ b/parse/root.cpp @@ -0,0 +1,77 @@ +/*
+ */
+#include "preproc.hpp"
+#include "../ast/ast.hpp"
+#include "parseerror.hpp"
+#include <cassert>
+
+AST::Path Parse_Path(TokenStream& lex)
+{
+ AST::Path path;
+ for(;;)
+ {
+ Token tok = lex.getToken();
+ if(tok.type() != TOK_IDENT)
+ throw ParseError::Unexpected(tok);
+ path.append( tok.str() );
+ tok = lex.getToken();
+ if(tok.type() != TOK_DOUBLE_COLON) {
+ lex.putback(tok);
+ break;
+ }
+ }
+ return path;
+}
+
+AST::Module Parse_ModRoot(bool is_own_file, Preproc& lex)
+{
+ AST::Module mod;
+ for(;;)
+ {
+ bool is_public = false;
+ Token tok = lex.getToken();
+ switch(tok.type())
+ {
+ case TOK_BRACE_CLOSE:
+ if( is_own_file )
+ throw ParseError::Unexpected(tok);
+ return mod;
+ case TOK_EOF:
+ if( !is_own_file )
+ throw ParseError::Unexpected(tok);
+ return mod;
+
+ case TOK_RWORD_PUB:
+ assert(!is_public);
+ is_public = false;
+ break;
+
+ case TOK_RWORD_USE:
+ mod.add_alias( Parse_Path(lex) );
+ tok = lex.getToken();
+ if( tok.type() != TOK_SEMICOLON )
+ throw ParseError::Unexpected(tok, Token(TOK_SEMICOLON));
+ break;
+
+ case TOK_RWORD_CONST:
+ //mod.add_constant(is_public, name, type, value);
+ throw ParseError::Todo("modroot const");
+ case TOK_RWORD_STATIC:
+ //mod.add_global(is_public, is_mut, name, type, value);
+ throw ParseError::Todo("modroot static");
+ case TOK_RWORD_FN:
+ throw ParseError::Todo("modroot fn");
+ case TOK_RWORD_STRUCT:
+ throw ParseError::Todo("modroot struct");
+
+ default:
+ throw ParseError::Unexpected(tok);
+ }
+ }
+}
+
+void Parse_Crate(::std::string mainfile)
+{
+ Preproc lex(mainfile);
+ AST::Module rootmodule = Parse_ModRoot(true, lex);
+}
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