aboutsummaryrefslogtreecommitdiff
path: root/bin/ksh/tree.h
diff options
context:
space:
mode:
Diffstat (limited to 'bin/ksh/tree.h')
-rw-r--r--bin/ksh/tree.h145
1 files changed, 145 insertions, 0 deletions
diff --git a/bin/ksh/tree.h b/bin/ksh/tree.h
new file mode 100644
index 0000000..5b3166b
--- /dev/null
+++ b/bin/ksh/tree.h
@@ -0,0 +1,145 @@
+/* $OpenBSD: tree.h,v 1.12 2015/10/15 22:53:50 mmcc Exp $ */
+
+/*
+ * command trees for compile/execute
+ */
+
+/* $From: tree.h,v 1.3 1994/05/31 13:34:34 michael Exp $ */
+
+/*
+ * Description of a command or an operation on commands.
+ */
+struct op {
+ short type; /* operation type, see below */
+ union { /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */
+ short evalflags; /* TCOM: arg expansion eval() flags */
+ short ksh_func; /* TFUNC: function x (vs x()) */
+ } u;
+ char **args; /* arguments to a command */
+ char **vars; /* variable assignments */
+ struct ioword **ioact; /* IO actions (eg, < > >>) */
+ struct op *left, *right; /* descendents */
+ char *str; /* word for case; identifier for for,
+ * select, and functions;
+ * path to execute for TEXEC;
+ * time hook for TCOM.
+ */
+ int lineno; /* TCOM/TFUNC: LINENO for this */
+};
+
+/* Tree.type values */
+#define TEOF 0
+#define TCOM 1 /* command */
+#define TPAREN 2 /* (c-list) */
+#define TPIPE 3 /* a | b */
+#define TLIST 4 /* a ; b */
+#define TOR 5 /* || */
+#define TAND 6 /* && */
+#define TBANG 7 /* ! */
+#define TDBRACKET 8 /* [[ .. ]] */
+#define TFOR 9
+#define TSELECT 10
+#define TCASE 11
+#define TIF 12
+#define TWHILE 13
+#define TUNTIL 14
+#define TELIF 15
+#define TPAT 16 /* pattern in case */
+#define TBRACE 17 /* {c-list} */
+#define TASYNC 18 /* c & */
+#define TFUNCT 19 /* function name { command; } */
+#define TTIME 20 /* time pipeline */
+#define TEXEC 21 /* fork/exec eval'd TCOM */
+#define TCOPROC 22 /* coprocess |& */
+
+/*
+ * prefix codes for words in command tree
+ */
+#define EOS 0 /* end of string */
+#define CHAR 1 /* unquoted character */
+#define QCHAR 2 /* quoted character */
+#define COMSUB 3 /* $() substitution (0 terminated) */
+#define EXPRSUB 4 /* $(()) substitution (0 terminated) */
+#define OQUOTE 5 /* opening " or ' */
+#define CQUOTE 6 /* closing " or ' */
+#define OSUBST 7 /* opening ${ subst (followed by { or X) */
+#define CSUBST 8 /* closing } of above (followed by } or X) */
+#define OPAT 9 /* open pattern: *(, @(, etc. */
+#define SPAT 10 /* separate pattern: | */
+#define CPAT 11 /* close pattern: ) */
+
+/*
+ * IO redirection
+ */
+struct ioword {
+ int unit; /* unit affected */
+ int flag; /* action (below) */
+ char *name; /* file name (unused if heredoc) */
+ char *delim; /* delimiter for <<,<<- */
+ char *heredoc;/* content of heredoc */
+};
+
+/* ioword.flag - type of redirection */
+#define IOTYPE 0xF /* type: bits 0:3 */
+#define IOREAD 0x1 /* < */
+#define IOWRITE 0x2 /* > */
+#define IORDWR 0x3 /* <>: todo */
+#define IOHERE 0x4 /* << (here file) */
+#define IOCAT 0x5 /* >> */
+#define IODUP 0x6 /* <&/>& */
+#define IOEVAL BIT(4) /* expand in << */
+#define IOSKIP BIT(5) /* <<-, skip ^\t* */
+#define IOCLOB BIT(6) /* >|, override -o noclobber */
+#define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */
+#define IONAMEXP BIT(8) /* name has been expanded */
+
+/* execute/exchild flags */
+#define XEXEC BIT(0) /* execute without forking */
+#define XFORK BIT(1) /* fork before executing */
+#define XBGND BIT(2) /* command & */
+#define XPIPEI BIT(3) /* input is pipe */
+#define XPIPEO BIT(4) /* output is pipe */
+#define XPIPE (XPIPEI|XPIPEO) /* member of pipe */
+#define XXCOM BIT(5) /* `...` command */
+#define XPCLOSE BIT(6) /* exchild: close close_fd in parent */
+#define XCCLOSE BIT(7) /* exchild: close close_fd in child */
+#define XERROK BIT(8) /* non-zero exit ok (for set -e) */
+#define XCOPROC BIT(9) /* starting a co-process */
+#define XTIME BIT(10) /* timing TCOM command */
+
+/*
+ * flags to control expansion of words (assumed by t->evalflags to fit
+ * in a short)
+ */
+#define DOBLANK BIT(0) /* perform blank interpretation */
+#define DOGLOB BIT(1) /* expand [?* */
+#define DOPAT BIT(2) /* quote *?[ */
+#define DOTILDE BIT(3) /* normal ~ expansion (first char) */
+#define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */
+#define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */
+#define DOBRACE_ BIT(6) /* used by expand(): do brace expansion */
+#define DOMAGIC_ BIT(7) /* used by expand(): string contains MAGIC */
+#define DOTEMP_ BIT(8) /* ditto : in word part of ${..[%#=?]..} */
+#define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */
+#define DOMARKDIRS BIT(10) /* force markdirs behaviour */
+
+/*
+ * The arguments of [[ .. ]] expressions are kept in t->args[] and flags
+ * indicating how the arguments have been munged are kept in t->vars[].
+ * The contents of t->vars[] are stuffed strings (so they can be treated
+ * like all other t->vars[]) in which the second character is the one that
+ * is examined. The DB_* defines are the values for these second characters.
+ */
+#define DB_NORM 1 /* normal argument */
+#define DB_OR 2 /* || -> -o conversion */
+#define DB_AND 3 /* && -> -a conversion */
+#define DB_BE 4 /* an inserted -BE */
+#define DB_PAT 5 /* a pattern argument */
+
+void fptreef(struct shf *, int, const char *, ...);
+char * snptreef(char *, int, const char *, ...);
+struct op * tcopy(struct op *, Area *);
+char * wdcopy(const char *, Area *);
+char * wdscan(const char *, int);
+char * wdstrip(const char *);
+void tfree(struct op *, Area *);