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author | 2011-07-21 12:30:44 +0000 | |
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committer | 2011-07-21 12:30:44 +0000 | |
commit | bb4fb107c337c4a2ff9653f44eb52a91acfe6b4a (patch) | |
tree | 311bb493dc3cf6ba1f6495455fa0b26d81ecda6d /mandoc.h | |
parent | e0f75c6ac153f58d4ab0b61182736fc07a2ce1dc (diff) | |
download | mandoc-bb4fb107c337c4a2ff9653f44eb52a91acfe6b4a.tar.gz mandoc-bb4fb107c337c4a2ff9653f44eb52a91acfe6b4a.tar.zst mandoc-bb4fb107c337c4a2ff9653f44eb52a91acfe6b4a.zip |
Support nested `{, }' subexpressions in eqn. Document in code.
Diffstat (limited to 'mandoc.h')
-rw-r--r-- | mandoc.h | 23 |
1 files changed, 15 insertions, 8 deletions
@@ -1,4 +1,4 @@ -/* $Id: mandoc.h,v 1.83 2011/07/21 11:34:53 kristaps Exp $ */ +/* $Id: mandoc.h,v 1.84 2011/07/21 12:30:44 kristaps Exp $ */ /* * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> * @@ -112,6 +112,8 @@ enum mandocerr { /* related to equations */ MANDOCERR_EQNARGS, /* bad equation macro arguments */ MANDOCERR_EQNNEST, /* too many nested equation defines */ + MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/ + MANDOCERR_EQNSCOPE, /* equation scope open on exit */ /* related to tables */ MANDOCERR_TBL, /* bad table syntax */ @@ -278,19 +280,24 @@ struct tbl_span { }; enum eqn_boxt { - EQN_ROOT, - EQN_TEXT + EQN_ROOT, /* root of parse tree */ + EQN_TEXT, /* text (number, variable, whatever) */ + EQN_SUBEXPR /* nested subexpression */ }; +/* + * A "box" is a parsed mathematical expression as defined by the eqn.7 + * grammar. + */ struct eqn_box { - enum eqn_boxt type; - struct eqn_box *child; - struct eqn_box *next; - char *text; + enum eqn_boxt type; /* type of node */ + struct eqn_box *child; /* child node */ + struct eqn_box *next; /* next in tree */ + char *text; /* text (or NULL) */ }; struct eqn { - struct eqn_box *root; + struct eqn_box *root; /* root mathematical expression */ int ln; /* invocation line */ int pos; /* invocation position */ }; |