diff options
Diffstat (limited to 'src/parser.cpp')
-rw-r--r-- | src/parser.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/parser.cpp b/src/parser.cpp new file mode 100644 index 0000000..7015070 --- /dev/null +++ b/src/parser.cpp | |||
@@ -0,0 +1,43 @@ | |||
1 | #include "bu/parser.h" | ||
2 | #include "bu/lexer.h" | ||
3 | |||
4 | #include "bu/sio.h" | ||
5 | using namespace Bu; | ||
6 | |||
7 | Bu::Parser::Parser() | ||
8 | { | ||
9 | } | ||
10 | |||
11 | Bu::Parser::~Parser() | ||
12 | { | ||
13 | } | ||
14 | |||
15 | void Bu::Parser::pushLexer( Lexer *pLex ) | ||
16 | { | ||
17 | sLexer.push( pLex ); | ||
18 | } | ||
19 | |||
20 | void Bu::Parser::popLexer() | ||
21 | { | ||
22 | delete sLexer.peekPop(); | ||
23 | } | ||
24 | |||
25 | void Bu::Parser::parse() | ||
26 | { | ||
27 | for(;;) | ||
28 | { | ||
29 | Bu::Lexer::Token *pToken = sLexer.peek()->nextToken(); | ||
30 | sio << sLexer.peek()->tokenToString( *pToken ) << sio.nl; | ||
31 | if( pToken->iToken < 0 ) | ||
32 | { | ||
33 | delete sLexer.peekPop(); | ||
34 | if( sLexer.isEmpty() ) | ||
35 | { | ||
36 | delete pToken; | ||
37 | return; | ||
38 | } | ||
39 | } | ||
40 | delete pToken; | ||
41 | } | ||
42 | } | ||
43 | |||