cf_client

%% -*- erlang -*-
%%
%% A Cuneiform client implementation.
%%
%% Copyright 2015-2018 Jörgen Brandt
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% -------------------------------------------------------------------
%% @author Jörgen Brandt <joergen.brandt@onlinehome.de>
%% @version 0.1.4
%% @copyright 2015-2018 Jörgen Brandt
%%
%%
%%
%%
%%
%% @end
%% -------------------------------------------------------------------

%% ==================================================================
%% Definitions
%% ==================================================================


Definitions.

LBASH      = Bash
LERLANG    = Erlang
LJAVA      = Java
LMATLAB    = Matlab
LOCTAVE    = Octave
LPERL      = Perl
LPYTHON    = Python
LR         = R
LRACKET    = Racket

TSTR       = Str
TFILE      = File
TBOOL      = Bool
TFNNTV     = Ntv
TFNFRN     = Frn

ASSIGN     = let
BAR        = \|
CMP        = ==
CND        = if
COLON      = :
COMMA      = ,
DEF        = def
DO         = do
DOUBLERTAG = >>
ELSE       = else
EQ         = =
ERR        = error
FALSE      = false
FOLD       = fold
FOR        = for
HALT       = end
IMPORT     = import
IN         = in
ISNIL      = isnil
LARROW     = <-
LBRACE     = \{
LPAREN     = \(
LSQUAREBR  = \[
LTAG       = <
NEG        = not
PLUS       = \+
RARROW     = ->
RBRACE     = \}
RPAREN     = \)
RSQUAREBR  = \]
RTAG       = >
SEMICOLON  = ;
THEN       = then
TRUE       = true
VEE        = or
WEDGE      = and

ID         = [A-Za-z][A-Za-z0-9\.\-_]*
INTLIT     = -?([0-9]|[1-9][0-9]*)
STRLIT     = "[^"]*"
FILELIT    = '[^']*'
BODY       = \*\{([^}]|\}+[^}*])*\}+\*

COMMENT    = (#|%).*
WS         = [\000-\s]


%% ==================================================================
%% Rules
%% ==================================================================

Rules.

{LBASH}      : {token, {l_bash, TokenLine, TokenChars}}.
{LERLANG}    : {token, {l_erlang, TokenLine, TokenChars}}.
{LJAVA}      : {token, {l_java, TokenLine, TokenChars}}.
{LMATLAB}    : {token, {l_matlab, TokenLine, TokenChars}}.
{LOCTAVE}    : {token, {l_octave, TokenLine, TokenChars}}.
{LPERL}      : {token, {l_perl, TokenLine, TokenChars}}.
{LPYTHON}    : {token, {l_python, TokenLine, TokenChars}}.
{LR}         : {token, {l_r, TokenLine, TokenChars}}.
{LRACKET}    : {token, {l_racket, TokenLine, TokenChars}}.

{TSTR}       : {token, {t_str, TokenLine, TokenChars}}.
{TFILE}      : {token, {t_file, TokenLine, TokenChars}}.
{TBOOL}      : {token, {t_bool, TokenLine, TokenChars}}.
{TFNNTV}     : {token, {t_fn_ntv, TokenLine, TokenChars}}.
{TFNFRN}     : {token, {t_fn_frn, TokenLine, TokenChars}}.

{ASSIGN}     : {token, {assign, TokenLine, TokenChars}}.
{BAR}        : {token, {bar, TokenLine, TokenChars}}.
{CMP}        : {token, {cmp, TokenLine, TokenChars}}.
{CND}        : {token, {cnd, TokenLine, TokenChars}}.
{COLON}      : {token, {colon, TokenLine, TokenChars}}.
{COMMA}      : {token, {comma, TokenLine, TokenChars}}.
{DEF}        : {token, {def, TokenLine, TokenChars}}.
{DO}         : {token, {do, TokenLine, TokenChars}}.
{DOUBLERTAG} : {token, {doublertag, TokenLine, TokenChars}}.
{ELSE}       : {token, {else, TokenLine, TokenChars}}.
{ERR}        : {token, {err, TokenLine, TokenChars}}.
{HALT}       : {token, {halt, TokenLine, TokenChars}}.
{EQ}         : {token, {eq, TokenLine, TokenChars}}.
{FALSE}      : {token, {false, TokenLine, TokenChars}}.
{FOLD}       : {token, {fold, TokenLine, TokenChars}}.
{FOR}        : {token, {for, TokenLine, TokenChars}}.
{IMPORT}     : {token, {import, TokenLine, TokenChars}}.
{IN}         : {token, {in, TokenLine, TokenChars}}.
{ISNIL}      : {token, {isnil, TokenLine, TokenChars}}.
{LARROW}     : {token, {larrow, TokenLine, TokenChars}}.
{LBRACE}     : {token, {lbrace, TokenLine, TokenChars}}.
{LPAREN}     : {token, {lparen, TokenLine, TokenChars}}.
{LSQUAREBR}  : {token, {lsquarebr, TokenLine, TokenChars}}.
{LTAG}       : {token, {ltag, TokenLine, TokenChars}}.
{NEG}        : {token, {neg, TokenLine, TokenChars}}.
{PLUS}       : {token, {plus, TokenLine, TokenChars}}.
{RARROW}     : {token, {rarrow, TokenLine, TokenChars}}.
{RBRACE}     : {token, {rbrace, TokenLine, TokenChars}}.
{RPAREN}     : {token, {rparen, TokenLine, TokenChars}}.
{RSQUAREBR}  : {token, {rsquarebr, TokenLine, TokenChars}}.
{RTAG}       : {token, {rtag, TokenLine, TokenChars}}.
{SEMICOLON}  : {token, {semicolon, TokenLine, TokenChars}}.
{THEN}       : {token, {then, TokenLine, TokenChars}}.
{TRUE}       : {token, {true, TokenLine, TokenChars}}.
{VEE}        : {token, {vee, TokenLine, TokenChars}}.
{WEDGE}      : {token, {wedge, TokenLine, TokenChars}}.

{ID}         : {token, {id, TokenLine, TokenChars}}.
{INTLIT}     : {token, {intlit, TokenLine, TokenChars}}.
{STRLIT}     : {token, {strlit, TokenLine, trim_lit( TokenChars )}}.
{FILELIT}    : {token, {filelit, TokenLine, trim_lit( TokenChars )}}.
{BODY}       : {token, {body, TokenLine, trim_body( TokenChars )}}.

{COMMENT}    : skip_token.
{WS}         : skip_token.


%% ==================================================================
%% Erlang Code
%% ==================================================================


Erlang code.

-export( [yyrev/2] ).

-spec trim_body( S :: string() ) -> string().

trim_body( S )
when is_list( S ), length( S ) >= 4 ->
  string:substr( S, 3, length( S )-4 ).


-spec trim_lit( S :: string() ) -> string().

trim_lit( S )
when is_list( S ), length( S ) >= 2 ->
  string:substr( S, 2, length( S )-2 ).