Copy everything into a new eshtrans/ directory

Split out and rename functions and variables where appropriate.

Also add license headers.  (The old scripts under parsing/ can be used
under the same license.)

1 files changed, 139 insertions, 0 deletions

diff --git a/eshtrans/tokens.esh b/eshtrans/tokens.esh
new file mode 100644
index 0000000..9da8bb8
--- /dev/null
+++ b/eshtrans/tokens.esh
@@ -0,0 +1,139 @@
+# Tokens query functions
+#
+# Copyright (C) 2016  Patrick "P. J." McDermott
+#
+# This file is part of the Eggshell Compiler.
+#
+# The Eggshell Compiler is free software: you can redistribute it
+# and/or modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, either version 3 of
+# the License, or (at your option) any later version.
+#
+# The Eggshell Compiler is distributed in the hope that it will be
+# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with the Eggshell Compiler.  If not, see
+# <http://www.gnu.org/licenses/>.
+
+tokname()
+{
+	local t="${1}"
+	shift 1
+	local n=
+
+	case "${t%${US}*}" in
+		# Operators
+		T_EOF)       n='end of file';;
+		T_NEWLINE)   n='newline';;
+		T_AND)       n='"&"';;
+		T_SEMI)      n='";"';;
+		T_AND_IF)    n='"&&"';;
+		T_OR_IF)     n='"||"';;
+		T_DSEMI)     n='";;"';;
+		T_LESS)      n='"<"';;
+		T_GREAT)     n='">"';;
+		T_DLESS)     n='"<<"';;
+		T_DGREAT)    n='">>"';;
+		T_LESS)      n='"<"';;
+		T_LESSAND)   n='"<&"';;
+		T_GREAT)     n='">"';;
+		T_GREATAND)  n='">&"';;
+		T_LESSGREAT) n='"<>"';;
+		T_DLESSDASH) n='"<<-"';;
+		T_CLOBBER)   n='">|"';;
+		T_PIPE)      n='"|"';;
+		T_LPAREN)    n='"("';;
+		T_RPAREN)    n='")"';;
+		# Reserved words
+		T_IF)     n='"if"';;
+		T_THEN)   n='"then"';;
+		T_ELSE)   n='"else"';;
+		T_ELIF)   n='"elif"';;
+		T_FI)     n='"fi"';;
+		T_DO)     n='"do"';;
+		T_DONE)   n='"done"';;
+		T_CASE)   n='"case"';;
+		T_ESAC)   n='"esac"';;
+		T_WHILE)  n='"while"';;
+		T_UNTIL)  n='"until"';;
+		T_FOR)    n='"for"';;
+		T_LBRACE) n='"{"';;
+		T_RBRACE) n='"}"';;
+		T_BANG)   n='"!"';;
+		T_IN)     n='"in"';;
+		# Special symbols
+		T_NAME)            n='parameter name';;
+		T_FNAME)           n='function name';;
+		T_CMDNAME)         n='command name';;
+		T_IO_NUMBER)       n='I/O number';;
+		T_WORD)            n='word';;
+		T_ASSIGNMENT_WORD) n='assignment word';;
+		# Unknown
+		*) n='unknown token';;
+	esac
+
+	printf '%s' "${n}"
+}
+
+toktext()
+{
+	local t="${1}"
+	shift 1
+	local n=
+
+	case "${t%${US}*}" in
+		# Operators
+		T_EOF)       n='';;
+		T_NEWLINE)   n="${LF}";;
+		T_AND)       n='&';;
+		T_SEMI)      n=';';;
+		T_AND_IF)    n='&&';;
+		T_OR_IF)     n='||';;
+		T_DSEMI)     n=';;';;
+		T_LESS)      n='<';;
+		T_GREAT)     n='>';;
+		T_DLESS)     n='<<';;
+		T_DGREAT)    n='>>';;
+		T_LESS)      n='<';;
+		T_LESSAND)   n='<&';;
+		T_GREAT)     n='>';;
+		T_GREATAND)  n='>&';;
+		T_LESSGREAT) n='<>';;
+		T_DLESSDASH) n='<<-';;
+		T_CLOBBER)   n='>|';;
+		T_PIPE)      n='|';;
+		T_LPAREN)    n='(';;
+		T_RPAREN)    n=')';;
+		# Reserved words
+		T_IF)     n='if';;
+		T_THEN)   n='then';;
+		T_ELSE)   n='else';;
+		T_ELIF)   n='elif';;
+		T_FI)     n='fi';;
+		T_DO)     n='do';;
+		T_DONE)   n='done';;
+		T_CASE)   n='case';;
+		T_ESAC)   n='esac';;
+		T_WHILE)  n='while';;
+		T_UNTIL)  n='until';;
+		T_FOR)    n='for';;
+		T_LBRACE) n='{';;
+		T_RBRACE) n='}';;
+		T_BANG)   n='!';;
+		T_IN)     n='in';;
+		# Special symbols
+		T_NAME)            n="${t#*${US}}";;
+		T_FNAME)           n="${t#*${US}}";;
+		T_CMDNAME)         n="${t#*${US}}";;
+		T_IO_NUMBER)       n="${t#*${US}}";;
+		T_WORD)            n="${t#*${US}}";;
+		T_ASSIGNMENT_WORD) n="${t#*${US}}";;
+		# Unknown
+		*) n='';;
+	esac
+
+	printf '%s' "${n}"
+}