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|
tree grammar SimpleCTP;
options {
tokenVocab = SimpleC;
language = ObjC;
ASTLabelType = ANTLRCommonTree;
}
scope Symbols
{
ANTLRCommonTree *tree;
}
program
: declaration+
;
declaration
: variable
| ^(FUNC_DECL functionHeader)
| ^(FUNC_DEF functionHeader block)
;
variable
: ^(VAR_DEF type declarator)
;
declarator
: K_ID
;
functionHeader
: ^(FUNC_HDR type K_ID formalParameter+)
;
formalParameter
: ^(ARG_DEF type declarator)
;
type
: K_INT_TYPE
| K_CHAR
| K_VOID
| K_ID
;
block
: ^(BLOCK variable* stat*)
;
stat: forStat
| expr
| block
;
forStat
: ^(K_FOR expr expr expr block)
;
expr: ^(K_EQEQ expr expr)
| ^(K_LT expr expr)
| ^(K_PLUS expr expr)
| ^(K_EQ K_ID e=expr) { NSLog(@"assigning \%@ to variable \%@", $e.text, $K_ID.text); }
| atom
;
atom
: K_ID
| K_INT
;
|
