/** \file parser_keywords.c

Functions having to do with parser keywords, like testing if a function is a block command.
*/

#include "config.h"


#include <stdlib.h>
#include <stdio.h>

#include "fallback.h"
#include "common.h"
#include "parser_keywords.h"


bool parser_keywords_is_switch( const wcstring &cmd )
{
	if (cmd == L"--") {
		return ARG_SKIP;
    } else if (! cmd.empty() && cmd.at(0) == L'-') {
        return ARG_SWITCH;
    } else {
        return ARG_NON_SWITCH;
    }
}

bool parser_keywords_skip_arguments( const wcstring &cmd )
{
	return contains( cmd,
					 L"else",
					 L"begin" );
}


bool parser_keywords_is_subcommand( const wcstring &cmd )
{

	return parser_keywords_skip_arguments( cmd ) ||
		contains( cmd,
				  L"command",
				  L"builtin",
				  L"while",
				  L"exec",
				  L"if",
				  L"and",
				  L"or",
				  L"not" );
	
}

bool parser_keywords_is_block( const wcstring &word)
{
	return contains( word,
					 L"for",
					 L"while",
					 L"if",
					 L"function",
					 L"switch",
					 L"begin" );
}

bool parser_keywords_is_reserved( const wcstring &word)
{
	return parser_keywords_is_block(word) ||
		parser_keywords_is_subcommand( word ) ||
		contains( word,
				  L"end",
				  L"case",
				  L"else",
				  L"return",
				  L"continue",
				  L"break" );
}