diff options
Diffstat (limited to 'src/sys/np/core/np_parse.c')
| -rw-r--r-- | src/sys/np/core/np_parse.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/src/sys/np/core/np_parse.c b/src/sys/np/core/np_parse.c index fd35e3c..3eefde5 100644 --- a/src/sys/np/core/np_parse.c +++ b/src/sys/np/core/np_parse.c @@ -269,16 +269,16 @@ parse_proc(struct np_work *work, struct ast_node **npp, struct lex_token *tok) * Parse a token * * @work: Input work - * @root: Root AST node * @tok: Current token */ static int -parse_token(struct np_work *work, struct ast_node *root, struct lex_token *tok) +parse_token(struct np_work *work, struct lex_token *tok) { tt_t tt; int error; struct ast_node *np; +#define PIIR_PUSH(BYTE) piir_push(work->piir_stack, (BYTE)) /* * XXX: wrapped in "[]" indicates optional * @@ -296,9 +296,15 @@ parse_token(struct np_work *work, struct ast_node *root, struct lex_token *tok) ++work->begin_depth; case TT_END: - /* Do the begin statements match? */ + /* + * Check if the 'begin' statements match, if they do + * we'll decrease the depth and push a NIL return + * + * TODO: We'll need to handle returns better + */ if (work->begin_depth > 0) { --work->begin_depth; + PIIR_PUSH(PIIR_RET_NIL); break; } @@ -321,18 +327,17 @@ parse_token(struct np_work *work, struct ast_node *root, struct lex_token *tok) return -1; } - root->left = NULL; /* arguments */ - root->right = np; + /* XXX: NOP for testing */ + PIIR_PUSH(PIIR_NOP); break; } - +#undef PIIR_PUSH return 0; } int parse_work(struct np_work *work) { - struct ast_node *root; struct lex_token tok; int error = 0; @@ -341,14 +346,6 @@ parse_work(struct np_work *work) return -EINVAL; } - /* Get the AST root node */ - work->ast_root = ast_alloc(work); - root = work->ast_root; - if (work->ast_root == NULL) { - pr_error("failed to alloc root AST\n"); - return -ENOMEM; - } - /* Initialize PIIR */ error = piir_stack_new(work, &work->piir_stack); if (error < 0) { @@ -371,11 +368,13 @@ parse_work(struct np_work *work) return -1; } - if (parse_token(work, root, &tok) < 0) { + if (parse_token(work, &tok) < 0) { return -1; } } + piir_inject(work); + /* * If there are more begin clauses than end * clauses, someone mismatched them. |