t047treeparserWalker.g revision 324c4644fee44b9898524c09511bd33c3f12e2df 
1// @@ANTLR Tool Options@@: -trace
2tree grammar t047treeparserWalker;
3options {
4    language=JavaScript;
5    tokenVocab=t047treeparser;
6    ASTLabelType=CommonTree;
7}
8
9program
10    :   declaration+
11    ;
12
13declaration
14    :   variable
15    |   ^(FUNC_DECL functionHeader)
16    |   ^(FUNC_DEF functionHeader block)
17    ;
18
19variable returns [res]
20    :   ^(VAR_DEF type declarator)
21        { 
22            $res = $declarator.text;
23        }
24    ;
25
26declarator
27    :   ID 
28    ;
29
30functionHeader
31    :   ^(FUNC_HDR type ID formalParameter+)
32    ;
33
34formalParameter
35    :   ^(ARG_DEF type declarator)
36    ;
37
38type
39    :   'int'
40    |   'char'
41    |   'void'
42    |   ID        
43    ;
44
45block
46    :   ^(BLOCK variable* stat*)
47    ;
48
49stat: forStat
50    | expr
51    | block
52    ;
53
54forStat
55    :   ^('for' expr expr expr block)
56    ;
57
58expr:   ^(EQEQ expr expr)
59    |   ^(LT expr expr)
60    |   ^(PLUS expr expr)
61    |   ^(EQ ID expr)
62    |   atom
63    ;
64
65atom
66    : ID      
67    | INT      
68    ; 
69