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// -*- C -*-

%prefixes%

%maps%

StringT		-> NStringT;

CCodeP		-> CCodeP;

BoolT		-> BoolT;

c-parse-grammar	-> c_parse_grammar;

%header% @{

/*

    		 Crown Copyright (c) 1997

    This TenDRA(r) Computer Program is subject to Copyright

    owned by the United Kingdom Secretary of State for Defence

    acting through the Defence Evaluation and Research Agency

    (DERA).  It is made available to Recipients with a

    royalty-free licence for its use, reproduction, transfer

    to other parties and amendment for any purpose not excluding

    product development provided that any such use et cetera

    shall be deemed to be acceptance of the following conditions:-

        (1) Its Recipients shall ensure that this Notice is

        reproduced upon any copies or amended versions of it;

        (2) Any amended version of it shall be clearly marked to

        show both the nature of and the organisation responsible

        for the relevant amendment or amendments;

        (3) Its onward transfer from a recipient to another

        party shall be deemed to be that party's acceptance of

        these conditions;

        (4) DERA gives no warranty or assurance as to its

        quality or suitability for any purpose and DERA accepts

        no liability whatsoever in relation to any use to which

        it may be put.

*/

#include "c-parser.h"

#include "action.h"

#include "c-code.h"

#include "c-out-info.h"

#include "basic.h"

#include "entry.h"

#include "gen-errors.h"

#include "type.h"

#include "types.h"

/*--------------------------------------------------------------------------*/

#define CURRENT_TERMINAL c_lexer_get_terminal (c_current_stream)

#define ADVANCE_LEXER c_lexer_next_token (c_current_stream)

#define SAVE_LEXER(x) (c_lexer_save_terminal (c_current_stream, (CTokenT) (x)))

#define RESTORE_LEXER (c_lexer_restore_terminal (c_current_stream))

/*--------------------------------------------------------------------------*/

static NStringT		c_prefix_names [CPFX_NUM_PREFIXES];

static BoolT		c_inited_prefix_names = FALSE;

static CPrefixT		c_current_prefix;

static EntryP		c_current_entry;

static TypeTupleT	c_saved_type;

static TypeTupleT	c_current_type;

static BoolT		c_propagating_error = FALSE;

/*--------------------------------------------------------------------------*/

CLexerStreamP		c_current_stream;

COutputInfoP		c_current_out_info;

TableP			c_current_table;

@}, @{

/*

    		 Crown Copyright (c) 1997

    This TenDRA(r) Computer Program is subject to Copyright

    owned by the United Kingdom Secretary of State for Defence

    acting through the Defence Evaluation and Research Agency

    (DERA).  It is made available to Recipients with a

    royalty-free licence for its use, reproduction, transfer

    to other parties and amendment for any purpose not excluding

    product development provided that any such use et cetera

    shall be deemed to be acceptance of the following conditions:-

        (1) Its Recipients shall ensure that this Notice is

        reproduced upon any copies or amended versions of it;

        (2) Any amended version of it shall be clearly marked to

        show both the nature of and the organisation responsible

        for the relevant amendment or amendments;

        (3) Its onward transfer from a recipient to another

        party shall be deemed to be that party's acceptance of

        these conditions;

        (4) DERA gives no warranty or assurance as to its

        quality or suitability for any purpose and DERA accepts

        no liability whatsoever in relation to any use to which

        it may be put.

*/

@};

%assignments%

StringT: (a) -> (b) = @{

    nstring_assign (&@b, @&a);

@};

%parameter-assignments%

StringT: (a) -> (b) = @{

    nstring_assign (&@b, @a);

@};

%result-assignments%

StringT: (a) -> (b) = @{

    nstring_assign (@b, @&a);

@};

%terminals%

c-identifier: () -> (i) = @{

    nstring_assign (&@i, c_lexer_string_value (c_current_stream));

@};

sid-identifier: () -> (i) = @{

    nstring_assign (&@i, c_lexer_string_value (c_current_stream));

@};

code: () -> (c) = @{

    @c = c_lexer_code_value (c_current_stream);

@};

%actions%

// Prefix section actions:

<set-prefix>: (string) -> () = @{

    int prefix;

    if (!c_inited_prefix_names) {

	nstring_copy_cstring (&(c_prefix_names [CPFX_TYPE]), "type");

	nstring_copy_cstring (&(c_prefix_names [CPFX_FN]), "function");

	nstring_copy_cstring (&(c_prefix_names [CPFX_IN]), "input");

	nstring_copy_cstring (&(c_prefix_names [CPFX_OUT]), "output");

	nstring_copy_cstring (&(c_prefix_names [CPFX_LABEL]), "label");

	nstring_copy_cstring (&(c_prefix_names [CPFX_TERMINAL]), "terminal");

	c_inited_prefix_names = TRUE;

    }

    for (prefix = 0; prefix < CPFX_NUM_PREFIXES; prefix ++) {

	if (nstring_ci_equal (@&string, &(c_prefix_names [prefix]))) {

	    break;

	}

    }

    if ((c_current_prefix = (CPrefixT) prefix) == CPFX_NUM_PREFIXES) {

	E_c_unknown_prefix (@&string);

    }

    nstring_destroy (&@=string);

@};

<x-set-prefix>: (string) -> () = @{

    if (c_current_prefix == CPFX_NUM_PREFIXES) {

	nstring_destroy (&@=string);

    } else {

	NStringP prefix = c_out_info_prefix (c_current_out_info,

					     c_current_prefix);

	nstring_destroy (prefix);

	nstring_assign (prefix, &@=string);

    }

@};

// Mapping section actions:

<set-map>: (string) -> () = @{

    if ((c_current_entry = table_get_entry (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_identifier (@&string);

    } else if (entry_get_mapping (c_current_entry)) {

	E_c_remapped_identifier (@&string);

	c_current_entry = NIL (EntryP);

    } else {

	switch (entry_type (c_current_entry)) EXHAUSTIVE {

	  case ET_NAME:

	  case ET_ACTION:

	  case ET_NON_LOCAL:

	    E_c_illegal_map (@&string);

	    c_current_entry = NIL (EntryP);

	    break;

	  case ET_RENAME:

	  case ET_PREDICATE:

	    /* UNREACHED */

	    break;

	  case ET_TYPE:

	  case ET_RULE:

	  case ET_BASIC:

	    break;

	}

    }

    nstring_destroy (&@=string);

@};

<x-set-map>: (string) -> () = @{

    if (c_current_entry) {

	entry_set_mapping (c_current_entry, &@=string);

    } else {

	nstring_destroy (&@=string);

    }

@};

// Header actions:

<set-header1>: (code) -> () = @{

    c_code_check (@code, FALSE, FALSE, NIL (TypeTupleP), NIL (TypeTupleP),

		  c_current_table);

    c_out_info_set_header1 (c_current_out_info, @code);

@};

<set-header2>: (code) -> () = @{

    c_code_check (@code, FALSE, FALSE, NIL (TypeTupleP), NIL (TypeTupleP),

		  c_current_table);

    c_out_info_set_header2 (c_current_out_info, @code);

@};

// Argument list actions:

<save-tuple> = @{

    types_assign (&c_saved_type, &c_current_type);

@};

<null-type> = @{

    types_init (&c_saved_type);

    types_init (&c_current_type);

@};

<init-tuple> = @{

    types_init (&c_current_type);

@};

<tuple-type>: (name, type) -> () = @{

    if (!types_add_typed_name (&c_current_type, c_current_table, &@=name,

			       @&type, FALSE)) {

	E_c_unknown_type (@&type);

    }

    nstring_destroy (&@=type);

@};

<tuple-ref-type>: (name, type) -> () = @{

    if (!types_add_typed_name (&c_current_type, c_current_table, &@=name,

			       @&type, TRUE)) {

	E_c_unknown_type (@&type);

    }

    nstring_destroy (&@=type);

@};

<tuple-name>: (string) -> () = @{

    types_add_name (&c_current_type, c_current_table, &@=string, FALSE);

@};

// Type assignment actions:

<assign>: (string) -> () = @{

    if ((c_current_entry = table_get_type (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_assign (@&string);

    } else if (type_get_assign_code (entry_get_type (c_current_entry))) {

	E_c_assign_mult_def (@&string);

	c_current_entry = NIL (EntryP);

    }

    nstring_destroy (&@=string);

@};

<x-assign>: (code) -> () = @{

    if (c_current_entry) {

	BoolT      errored = FALSE;

	KeyP       key     = entry_key (c_current_entry);

	TypeTupleT tmp;

	types_init (&tmp);

	types_add_type_entry (&tmp, c_current_entry, FALSE);

	if (!types_disjoint_names (&c_saved_type)) {

	    E_c_assign_param_clash (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_saved_type, &tmp)) {

	    E_c_assign_param_mismatch (key, &tmp, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_disjoint_names (&c_current_type)) {

	    E_c_assign_result_clash (key, &c_current_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_current_type, &tmp)) {

	    E_c_assign_result_mismatch (key, &tmp, &c_current_type);

	    errored = TRUE;

	}

	if (types_intersect (&c_saved_type, &c_current_type)) {

	    E_c_assign_formal_clash (key, &c_saved_type, &c_current_type);

	    errored = TRUE;

	}

	types_destroy (&tmp);

	if (errored) {

	    types_destroy (&c_saved_type);

	    types_destroy (&c_current_type);

	    c_code_deallocate (@code);

	    c_current_entry = NIL (EntryP);

	} else {

	    TypeP type = entry_get_type (c_current_entry);

	    c_code_check (@code, FALSE, FALSE, &c_saved_type, &c_current_type,

			  c_current_table);

	    type_set_assign_code (type, (GenericP) @code);

	}

    } else {

	types_destroy (&c_saved_type);

	types_destroy (&c_current_type);

	c_code_deallocate (@code);

    }

@};

<passign>: (string) -> () = @{

    if ((c_current_entry = table_get_type (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_param_assign (@&string);

    } else if (type_get_param_assign_code (entry_get_type (c_current_entry))) {

	E_c_param_assign_mult_def (@&string);

	c_current_entry = NIL (EntryP);

    }

    nstring_destroy (&@=string);

@};

<x-passign>: (code) -> () = @{

    if (c_current_entry) {

	BoolT      errored = FALSE;

	KeyP       key     = entry_key (c_current_entry);

	TypeTupleT tmp;

	types_init (&tmp);

	types_add_type_entry (&tmp, c_current_entry, FALSE);

	if (!types_disjoint_names (&c_saved_type)) {

	    E_c_param_assign_param_clash (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_saved_type, &tmp)) {

	    E_c_param_assign_param_mismatch (key, &tmp, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_disjoint_names (&c_current_type)) {

	    E_c_param_assign_result_clash (key, &c_current_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_current_type, &tmp)) {

	    E_c_param_assign_res_mismatch (key, &tmp, &c_current_type);

	    errored = TRUE;

	}

	if (types_intersect (&c_saved_type, &c_current_type)) {

	    E_c_param_assign_formal_clash (key, &c_saved_type,

					    &c_current_type);

	    errored = TRUE;

	}

	types_destroy (&tmp);

	if (errored) {

	    types_destroy (&c_saved_type);

	    types_destroy (&c_current_type);

	    c_code_deallocate (@code);

	    c_current_entry = NIL (EntryP);

	} else {

	    TypeP type = entry_get_type (c_current_entry);

	    c_code_check (@code, FALSE, TRUE, &c_saved_type, &c_current_type,

			  c_current_table);

	    type_set_param_assign_code (type, (GenericP) @code);

	}

    } else {

	types_destroy (&c_saved_type);

	types_destroy (&c_current_type);

	c_code_deallocate (@code);

    }

@};

<rassign>: (string) -> () = @{

    if ((c_current_entry = table_get_type (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_result_assign (@&string);

    } else if (type_get_result_assign_code (entry_get_type (c_current_entry))) {

	E_c_result_assign_mult_def (@&string);

	c_current_entry = NIL (EntryP);

    }

    nstring_destroy (&@=string);

@};

<x-rassign>: (code) -> () = @{

    if (c_current_entry) {

	BoolT      errored = FALSE;

	KeyP       key     = entry_key (c_current_entry);

	TypeTupleT tmp;

	types_init (&tmp);

	types_add_type_entry (&tmp, c_current_entry, FALSE);

	if (!types_disjoint_names (&c_saved_type)) {

	    E_c_result_assign_param_clash (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_saved_type, &tmp)) {

	    E_c_res_assign_param_mismatch (key, &tmp, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_disjoint_names (&c_current_type)) {

	    E_c_result_assign_result_clash (key, &c_current_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_current_type, &tmp)) {

	    E_c_res_assign_result_mismatch (key, &tmp, &c_current_type);

	    errored = TRUE;

	}

	if (types_intersect (&c_saved_type, &c_current_type)) {

	    E_c_result_assign_formal_clash (key, &c_saved_type,

					    &c_current_type);

	    errored = TRUE;

	}

	types_destroy (&tmp);

	if (errored) {

	    types_destroy (&c_saved_type);

	    types_destroy (&c_current_type);

	    c_code_deallocate (@code);

	    c_current_entry = NIL (EntryP);

	} else {

	    TypeP type = entry_get_type (c_current_entry);

	    c_code_check (@code, FALSE, FALSE, &c_saved_type, &c_current_type,

			  c_current_table);

	    type_set_result_assign_code (type, (GenericP) @code);

	}

    } else {

	types_destroy (&c_saved_type);

	types_destroy (&c_current_type);

	c_code_deallocate (@code);

    }

@};

// Terminal result extraction actions:

<set-terminal>: (string) -> () = @{

    if ((c_current_entry = table_get_basic (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_basic (@&string);

    } else {

	BasicP basic = entry_get_basic (c_current_entry);

	if (basic_get_result_code (basic)) {

	    E_c_basic_mult_def (@&string);

	    c_current_entry = NIL (EntryP);

	} else if (types_equal_zero_tuple (basic_result (basic))) {

	    E_c_basic_has_no_result (@&string);

	    c_current_entry = NIL (EntryP);

	}

    }

    nstring_destroy (&@=string);

@};

<x-set-terminal>: (code) -> () = @{

    if (c_current_entry) {

	BasicP     basic   = entry_get_basic (c_current_entry);

	TypeTupleP result  = basic_result (basic);

	BoolT      errored = FALSE;

	KeyP       key     = entry_key (c_current_entry);

	if (!types_disjoint_names (&c_saved_type)) {

	    E_c_basic_param_clash (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_equal_zero_tuple (&c_saved_type)) {

	    E_c_basic_param_mismatch (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_disjoint_names (&c_current_type)) {

	    E_c_basic_result_clash (key, &c_current_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_current_type, result)) {

	    E_c_basic_result_mismatch (key, result, &c_current_type);

	    errored = TRUE;

	}

	if (types_intersect (&c_saved_type, &c_current_type)) {

	    E_c_basic_formal_clash (key, &c_saved_type, &c_current_type);

	    errored = TRUE;

	}

	if (errored) {

	    types_destroy (&c_saved_type);

	    types_destroy (&c_current_type);

	    c_code_deallocate (@code);

	    c_current_entry = NIL (EntryP);

	} else {

	    types_destroy (&c_saved_type);

	    c_code_check (@code, FALSE, FALSE, NIL (TypeTupleP),

			  &c_current_type, c_current_table);

	    basic_set_result_code (basic, (GenericP) @code);

	}

    } else {

	types_destroy (&c_saved_type);

	types_destroy (&c_current_type);

	c_code_deallocate (@code);

    }

@};

// Action definition actions:

<set-action>: (string) -> () = @{

    if ((c_current_entry = table_get_action (c_current_table, @&string)) ==

	NIL (EntryP)) {

	E_c_unknown_action (@&string);

    } else {

	ActionP action = entry_get_action (c_current_entry);

	if (action_get_code (action)) {

	    E_c_action_mult_def (@&string);

	    c_current_entry = NIL (EntryP);

	}

    }

    nstring_destroy (&@=string);

@};

<x-set-action>: (code) -> () = @{

    if (c_current_entry) {

	ActionP    action  = entry_get_action (c_current_entry);

	TypeTupleP param   = action_param (action);

	TypeTupleP result  = action_result (action);

	BoolT      errored = FALSE;

	KeyP       key     = entry_key (c_current_entry);

	if (!types_disjoint_names (&c_saved_type)) {

	    E_c_action_param_clash (key, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_saved_type, param)) {

	    E_c_action_param_mismatch (key, param, &c_saved_type);

	    errored = TRUE;

	}

	if (!types_disjoint_names (&c_current_type)) {

	    E_c_action_result_clash (key, &c_current_type);

	    errored = TRUE;

	}

	if (!types_fillin_types (&c_current_type, result)) {

	    E_c_action_result_mismatch (key, result, &c_current_type);

	    errored = TRUE;

	}

	if (types_intersect (&c_saved_type, &c_current_type)) {

	    E_c_action_formal_clash (key, &c_saved_type, &c_current_type);

	    errored = TRUE;

	}

	if (errored) {

	    types_destroy (&c_saved_type);

	    types_destroy (&c_current_type);

	    c_code_deallocate (@code);

	    c_current_entry = NIL (EntryP);

	} else {

	    c_code_check (@code, TRUE, FALSE, &c_saved_type, &c_current_type,

			  c_current_table);

	    types_propogate_mutations (param, &c_saved_type);

	    action_set_code (action, (GenericP) @code);

	}

    } else {

	types_destroy (&c_saved_type);

	types_destroy (&c_current_type);

	c_code_deallocate (@code);

    }

@};

<set-trailer1>: (code) -> () = @{

    c_code_check (@code, FALSE, FALSE, NIL (TypeTupleP), NIL (TypeTupleP),

		  c_current_table);

    c_out_info_set_trailer1 (c_current_out_info, @code);

@};

<set-trailer2>: (code) -> () = @{

    c_code_check (@code, FALSE, FALSE, NIL (TypeTupleP), NIL (TypeTupleP),

		  c_current_table);

    c_out_info_set_trailer2 (c_current_out_info, @code);

@};

// Error recovery stuff:

<unhandled-syntax-error> = @{

    UNREACHED;

@};

<expected-identifier> = @{

    if (!c_propagating_error) {

	E_c_expected_identifier ();

    }

@};

<expected-c-identifier> = @{

    if (!c_propagating_error) {

	E_c_expected_c_identifier ();

    }

@};

<expected-separator> = @{

    if (!c_propagating_error) {

	E_c_expected_separator ();

    }

@};

<expected-open-tuple> = @{

    if (!c_propagating_error) {

	E_c_expected_open_tuple ();

    }

@};

<expected-close-tuple> = @{

    if (!c_propagating_error) {

	E_c_expected_close_tuple ();

    }

@};

<expected-arrow> = @{

    if (!c_propagating_error) {

	E_c_expected_arrow ();

    }

@};

<expected-terminator> = @{

    if (!c_propagating_error) {

	E_c_expected_terminator ();

    }

@};

<expected-end-action> = @{

    if (!c_propagating_error) {

	E_c_expected_end_action ();

    }

@};

<expected-define> = @{

    if (!c_propagating_error) {

	E_c_expected_define ();

    }

@};

<expected-code> = @{

    if (!c_propagating_error) {

	E_c_expected_code ();

    }

@};

<expected-blt-header> = @{

    if (!c_propagating_error) {

	E_c_expected_blt_header ();

    }

@};

<expected-blt-terminals> = @{

    if (!c_propagating_error) {

	E_c_expected_blt_terminals ();

    }

@};

<expected-blt-actions> = @{

    if (!c_propagating_error) {

	E_c_expected_blt_actions ();

    }

@};

<expected-blt-trailer> = @{

    if (!c_propagating_error) {

	E_c_expected_blt_trailer ();

    }

@};

<expected-eof> = @{

    if (!c_propagating_error) {

	E_c_expected_eof ();

    }

@};

<destroy-string>: (string) -> () = @{

    nstring_destroy (&@=string);

@};

<skip-to-end-of-tuple-defn> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_DEFINE) &&

	   (@. != C_TOK_CODE) &&

	   (@. != C_TOK_SEPARATOR) &&

	   (@. != C_TOK_CLOSE_TUPLE) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_PARAM_ASSIGN) &&

	   (@. != C_TOK_BLT_RESULT_ASSIGN) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-prefix> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_MAPS) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ASSIGNMENTS) &&

	   (@. != C_TOK_BLT_PARAM_ASSIGN) &&

	   (@. != C_TOK_BLT_RESULT_ASSIGN) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-map> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_ASSIGNMENTS) &&

	   (@. != C_TOK_BLT_PARAM_ASSIGN) &&

	   (@. != C_TOK_BLT_RESULT_ASSIGN) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-assignment> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_PARAM_ASSIGN) &&

	   (@. != C_TOK_BLT_RESULT_ASSIGN) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-param-assign> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_RESULT_ASSIGN) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-result-assign> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_TERMINALS) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-terminal> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_ACTIONS) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-to-end-of-action> = @{

    while ((@. != C_TOK_EOF) &&

	   (@. != C_TOK_TERMINATOR) &&

	   (@. != C_TOK_BLT_TRAILER)) {

	if ((@. == C_TOK_SID_IDENTIFIER) ||

	    (@. == C_TOK_C_IDENTIFIER)) {

	    nstring_destroy (c_lexer_string_value (c_current_stream));

	} else if (@. == C_TOK_CODE) {

	    c_code_deallocate (c_lexer_code_value (c_current_stream));

	}

	@>;

    }

    if ((@. == C_TOK_SID_IDENTIFIER) ||

	(@. == C_TOK_C_IDENTIFIER)) {

	nstring_destroy (c_lexer_string_value (c_current_stream));

    }

    if (@. != C_TOK_EOF) {

	@>;

    }

    c_propagating_error = TRUE;

@};

<skip-recover> = @{

    c_propagating_error = FALSE;

@};

<is-close-tuple-or-skipped-or-eof>: () -> (predicate) = @{

    @predicate = ((@. == C_TOK_CLOSE_TUPLE) ||

		  (@. == C_TOK_EOF) ||

		  (c_propagating_error));

@};

%trailer% @{

@}, @{

@};