AdaGenerator.py 134 KB
Newer Older
Maxime Perrotin's avatar
Maxime Perrotin committed
1 2 3 4 5 6 7 8 9 10 11
#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
    OpenGEODE - A tiny SDL Editor for TASTE

    This module generates Ada code from SDL process models.
    The Ada code is compliant with the TASTE interfaces, and is
    using the ASN.1 "Space-Certified" compiler for data type definition.
    (See TASTE documentation for more information)

Maxime Perrotin's avatar
Maxime Perrotin committed
12
    The design is flexible and can be used as basis for other backends.
Maxime Perrotin's avatar
Maxime Perrotin committed
13 14 15 16 17 18 19 20 21 22 23

    Entry point:
    The AST of the model that is parsed is described in ogAST.py

    A Visitor Pattern using Python's "singledispatch" mechanism is used
    to go through the AST and generate code for each SDL construct.

    There is a single function called "generate", decorated with the
    singledispatch mechanism, that needs to be called to generate the code
    of any AST element.

Maxime Perrotin's avatar
Maxime Perrotin committed
24 25 26
    The generate function returns two values: "code" and "local_decl",
    containing a set of statements and a set of local variables
    (that can be later placed anywhere in the code).
Maxime Perrotin's avatar
Maxime Perrotin committed
27

Maxime Perrotin's avatar
Maxime Perrotin committed
28 29 30 31 32
    Expressions (all classes derived from ogAST.Expression) are generated
    using the "expression" visitor (singledispatch set of function).

    Expressions return three values: "code", "ada_string" and "local_decl".
    The "ada_string" value is the usable string that corresponds
Maxime Perrotin's avatar
Maxime Perrotin committed
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
    to the result of the expression evaluation.

    For example, take the SDL statement "OUTPUT hello(a+5)"

    This results (in TASTE terminology) in calling the required interface
    called "hello" and passing a parameter of an ASN.1 type (say MyInteger).
    The parameter is always passed by reference.

    It is therefore necessary to build a temporary variable to hold the result
    of the "a+5" expression.

    In this example, the "generate" function will return:
    local_decl = ["tmp01 : MyInteger;"]
    (The template backend can then place it wherever appropriate)

    and code = ["tmp01 := a + 5;", "hello(tmp01);"]
    (The template will then do a '\n'.join(code) - and add indents, etc.)

    To know about "tmp01" and generate the code "hello(tmp01);",
    the function will recursively call "generate" and
    pass a+5 as parameter. The call will return the tuple:

    local_decl = ["tmp01 : MyInteger;"]
    code = ["tmp01 := a + 5;"]
    ada_string = "tmp01"

    This design allows to have any level of complexity in the embedded
    expression in a way that is easy to handle (adding constructs with
    this pattern is straightforward, once the generate function for each AST
    entry is properly implemented).

    Copyright (c) 2012-2013 European Space Agency

    Designed and implemented by Maxime Perrotin

    Contact: maxime.perrotin@esa.int
"""


import logging
73
import traceback
74
import os
75
import stat
76
from itertools import chain, product
Maxime Perrotin's avatar
Maxime Perrotin committed
77 78 79
from singledispatch import singledispatch

import ogAST
80
import Helper
Maxime Perrotin's avatar
Maxime Perrotin committed
81 82 83 84 85 86 87 88 89 90 91 92 93

LOG = logging.getLogger(__name__)

__all__ = ['generate']

# reference to the ASN.1 Data view and to the visible variables (in scope)
TYPES = None
VARIABLES = {}
LOCAL_VAR = {}
# List of output signals and procedures
OUT_SIGNALS = []
PROCEDURES = []

94 95 96
# Specify that the target is a shared library
SHARED_LIB = False

97
UNICODE_SEP = u'\u00dc'
98
LPREFIX = u'ctxt'
Maxime Perrotin's avatar
Maxime Perrotin committed
99

100 101 102 103 104 105 106 107 108 109

def is_numeric(string):
    ''' Return true if value is a number '''
    try:
        float(string)
    except ValueError:
        return False
    return True


110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
def external_ri_list(process):
    ''' Helper function: create a list of RI with proper signature
    Used for the formal parameters of generic packages when using process type
    '''
    result = []
    for signal in process.output_signals:
        param_name = signal.get('param_name') \
                                or u'{}_param'.format(signal['name'])
        param_spec = ''
        if 'type' in signal:
            typename = type_name(signal['type'])
            param_spec = u'({pName}: access {sort})'.format(pName=param_name,
                                                            sort=typename)
        result.append(u"procedure RI{sep}{name}{param}".format(sep=UNICODE_SEP,
                                                           name=signal['name'],
                                                           param=param_spec))
    for proc in (proc for proc in process.procedures if proc.external):
        ri_header = u'procedure RI{sep}{sig_name}'.format(
                                                     sep=UNICODE_SEP,
                                                     sig_name=proc.inputString)
        params = []
        params_spec = ''
        for param in proc.fpar:
            typename = type_name(param['type'])
            params.append(u'{par[name]}: access {sort}'.format(par=param,
                                                               sort=typename))
        if params:
            params_spec = u"({})".format("; ".join(params))
            ri_header += params_spec
        result.append(ri_header)
140 141

    for timer in process.timers:
142
        result.append(u"procedure Set_{}(val: access asn1SccT_Uint32)"
143
                      .format(timer))
144
        result.append(u"procedure Reset_{}"
145
                      .format(timer))
146 147 148
    return result


Maxime Perrotin's avatar
Maxime Perrotin committed
149
@singledispatch
150
def generate(*args, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
151
    ''' Generate the code for an item of the AST '''
152
    raise TypeError('Incorrect, unsupported or missing data in model AST')
153
    return [], []
Maxime Perrotin's avatar
Maxime Perrotin committed
154 155


Maxime Perrotin's avatar
Maxime Perrotin committed
156
# Processing of the AST
Maxime Perrotin's avatar
Maxime Perrotin committed
157
@generate.register(ogAST.Process)
158 159 160 161 162
def _process(process, simu=False, instance=False, **kwargs):
    ''' Generate the code for a complete process (AST Top level)
        use instance=True to generate the code for a process type instance
        rather than the process type itself.
    '''
163
    # support generation of code of a process type
164 165 166 167 168 169 170 171 172 173 174 175
    if not instance:
        process_name = process.instance_of_name or process.processName
        generic = process.instance_of_name  #  shortcut
        process_instance = process
        process = process.instance_of_ref or process
    else:
        process_name = process.processName
        generic = False
        process_instance = process

    if process_instance is not process:
        # Generate an instance of the process type, too.
176 177 178
        # First copy the list of timers to the instance (otherwise the
        # instance would miss some PIs and RIs to set the actual timers)
        process_instance.timers = process.timers
179
        generate(process_instance, simu, instance=True)
180

Maxime Perrotin's avatar
Maxime Perrotin committed
181 182 183 184 185 186
    global TYPES
    TYPES = process.dataview
    del OUT_SIGNALS[:]
    del PROCEDURES[:]
    OUT_SIGNALS.extend(process.output_signals)
    PROCEDURES.extend(process.procedures)
187
    global SHARED_LIB
188
    global LPREFIX
189 190
    if simu:
        SHARED_LIB = True
191
        LPREFIX = process_name + u'_ctxt'
Maxime Perrotin's avatar
Maxime Perrotin committed
192

193 194 195 196
    # taste-properties module-specific flag for the Ada backend:
    # import the state data from an external module
    import_context = kwargs["ppty_check"] if "ppty_check" in kwargs else ""

197 198 199 200 201 202 203 204 205 206 207
    # When building a shared library (with simu=True), generate a "mini-cv"
    # for aadl2glueC to create the code interfacing with asn1scc
    minicv = ['-- Automatically generated by OpenGEODE - do NOT modify!']
    def aadl_template(sp_name, io_param, pi_or_ri):
        ''' AADL mini-cv code in case of shared library
            sp_name  : name of the PI or RI
            io_param : list of (param_name, type_name, direction)
            pi_or_ri : string "PI" or "RI" depending on the direction
            return a string
        '''
        res = []
208 209 210 211 212
        if not io_param:
            LOG.info('Parameterless interface "{}" will not appear in the'
                     ' AADL file but will be handled directly by the GUI'
                     .format(sp_name))
            return ''
213 214 215 216 217 218
        # In case of shared library, generate the AADL "mini-cv" code
        res.append('SUBPROGRAM {}'.format(sp_name))
        if io_param:
            res.append('FEATURES')
            for param_name, sort, direction in io_param:
                res.append('    {pname}: {io} PARAMETER DataView::{sort} '
219 220 221
                          '{{encoding=>Native;}};'.format(pname=param_name,
                                                          sort=sort,
                                                          io=direction))
222 223 224 225 226 227 228 229 230
        res.append('END {};\n'.format(sp_name))
        res.append('SUBPROGRAM IMPLEMENTATION {}.GUI_{}'
                      .format(sp_name, pi_or_ri))
        res.append('PROPERTIES')
        res.append('    FV_Name => "{}";'.format(process_name))
        res.append('    Source_Language => GUI_{};'.format(pi_or_ri))
        res.append('END {}.GUI_{};\n'.format(sp_name, pi_or_ri))
        return '\n'.join(res)

231
    # bash script to simulate the system (TEMPORARY)
232 233 234 235 236 237 238 239

    # go up to the root of the AST to get the list of ASN.1 files
    parent = process.parent
    while hasattr(parent, 'parent') and parent.parent:
        parent = parent.parent
    if isinstance(parent, ogAST.System):
        parent = parent.ast
    asn1_filenames = ' '.join(parent.asn1_filenames)
Maxime Perrotin's avatar
Maxime Perrotin committed
240
    asn1_uniq = ' '.join(each for each in parent.asn1_filenames
241
                         if not each.endswith('dataview-uniq.asn'))
242
    pr_path = ' '.join(parent.pr_files) if None not in parent.pr_files else ''
243 244 245 246 247
    pr_names = ' '.join(
                      os.path.basename(pr_file) for pr_file in parent.pr_files)
    asn1_modules = (name.lower().replace('-', '_') + '.o'
                    for name in process.asn1Modules)

248
    simu_script = '''#!/bin/bash -e
249 250 251 252 253
rm -rf {pr}_simu
mkdir -p {pr}_simu
cp {pr_path} {asn1} {pr}_simu
cd {pr}_simu
opengeode {pr_names} --shared
254
cat {uniq} >> dataview-uniq.asn '''.format(pr=process_name.lower(),
Maxime Perrotin's avatar
Maxime Perrotin committed
255 256 257 258
                                           asn1=asn1_filenames,
                                           pr_path=pr_path,
                                           uniq=asn1_uniq or '/dev/null',
                                           pr_names=pr_names)
259 260 261

    if asn1_filenames:
        simu_script += '''
262 263 264
mono $(which asn1.exe) -Ada -typePrefix asn1Scc -equal {asn1}
mono $(which asn1.exe) -c -typePrefix asn1Scc -equal {asn1}'''.format(
                                                           asn1=asn1_filenames)
265 266

    simu_script += '''
267
gnatmake -fPIC -gnat2012 -c *.adb
268
gnatbind -n -Llib{pr} {pr}
269
gnatmake -fPIC -c -gnat2012 b~{pr}.adb
270
gcc -shared -fPIC -o lib{pr}.so b~{pr}.o {pr}.o {asn1_mod} adaasn1rtl.o -lgnat
271
rm -f dataview-uniq.c dataview-uniq.h
272
asn2aadlPlus dataview-uniq.asn DataView.aadl
273 274 275
aadl2glueC DataView.aadl {pr}_interface.aadl
asn2dataModel -toPython dataview-uniq.asn
make -f Makefile.python
276
echo "errCodes=$(taste-asn1-errCodes ./dataview-uniq.h)" >>datamodel.py
277
LD_LIBRARY_PATH=. opengeode-simulator
278
'''.format(pr=process_name.lower(),
279 280
           asn1_files=asn1_filenames,
           asn1_mod=' '.join(asn1_modules))
281

282

Maxime Perrotin's avatar
Maxime Perrotin committed
283 284
    LOG.info('Generating Ada code for process ' + str(process_name))

285
    # In case model has nested states, flatten everything
286
    Helper.flatten(process, sep=UNICODE_SEP)
287

288
    # Process State aggregations (Parallel states) XXX Add to C backend
289

290 291
    # Find recursively in the AST all state aggregations
    # Format: {'aggregation_name' : [list of ogAST.CompositeState]
292
    aggregates = Helper.state_aggregations(process)
293

294 295 296
    # Extract the list of parallel states names inside the composite states
    # of state aggregations XXX add to C generator
    parallel_states = Helper.parallel_states(aggregates)
297

Maxime Perrotin's avatar
Maxime Perrotin committed
298 299 300 301
    # Make an maping {input: {state: transition...}} in order to easily
    # generate the lookup tables for the state machine runtime
    mapping = Helper.map_input_state(process)

Maxime Perrotin's avatar
Maxime Perrotin committed
302 303 304
    VARIABLES.update(process.variables)

    process_level_decl = []
305

306
    # Establish the list of states (excluding START states) XXX update C backend
307
    full_statelist = set(chain(aggregates.viewkeys(),
308 309
                               (name for name in process.mapping.iterkeys()
                                    if not name.endswith(u'START'))))
310
    reduced_statelist = {s for s in full_statelist if s not in parallel_states}
Maxime Perrotin's avatar
Maxime Perrotin committed
311
    if aggregates:
312 313
        # Parallel states in a state aggregation may terminate
        full_statelist.add(u'{}finished'.format(UNICODE_SEP))
314

Maxime Perrotin's avatar
Maxime Perrotin committed
315
    context_decl = []
316
    if full_statelist:
Maxime Perrotin's avatar
Maxime Perrotin committed
317
        context_decl.append(u'type States is ({});'
318
                            .format(u', '.join(full_statelist) or u'No_State'))
319 320

    # Generate the code to declare process-level context
Maxime Perrotin's avatar
Maxime Perrotin committed
321
    context_decl.extend(['type {}_Ty is'.format(LPREFIX), 'record'])
322

323
    if full_statelist:
Maxime Perrotin's avatar
Maxime Perrotin committed
324
        context_decl.append('state : States;')
325

Maxime Perrotin's avatar
Maxime Perrotin committed
326
    context_decl.append('initDone : Boolean := False;')
327

Maxime Perrotin's avatar
Maxime Perrotin committed
328
    # State aggregation: add list of substates (XXX to be added in C generator)
329 330
    for substates in aggregates.viewvalues():
        for each in substates:
Maxime Perrotin's avatar
Maxime Perrotin committed
331
            context_decl.append(u'{}{}state: States;'
332
                                      .format(each.statename, UNICODE_SEP))
Maxime Perrotin's avatar
Maxime Perrotin committed
333

Maxime Perrotin's avatar
Maxime Perrotin committed
334 335 336 337
    for var_name, (var_type, def_value) in process.variables.viewitems():
        if def_value:
            # Expression must be a ground expression, i.e. must not
            # require temporary variable to store computed result
Maxime Perrotin's avatar
Maxime Perrotin committed
338
            dst, dstr, dlocal = expression(def_value)
339 340 341
            varbty = find_basic_type(var_type)
            if varbty.kind in ('SequenceOfType', 'OctetStringType'):
                dstr = array_content(def_value, dstr, varbty)
Maxime Perrotin's avatar
Maxime Perrotin committed
342
            assert not dst and not dlocal, 'DCL: Expecting a ground expression'
Maxime Perrotin's avatar
Maxime Perrotin committed
343
        context_decl.append(
344 345
                        u'{n} : aliased {sort}{default};'
                        .format(n=var_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
346 347
                                sort=type_name(var_type),
                                default=u' := ' + dstr if def_value else u''))
Maxime Perrotin's avatar
Maxime Perrotin committed
348

Maxime Perrotin's avatar
Maxime Perrotin committed
349
    context_decl.append('end record;')
350 351
    # context is aliased so that the model checker can work with access type
    context_decl.append('{ctxt}: aliased {ctxt}_Ty;'.format(ctxt=LPREFIX))
352
    if simu:
353 354
        # Export the context, so that it can be manipulated from outside
        # (in practice used by the "properties" module.
Maxime Perrotin's avatar
Maxime Perrotin committed
355
        context_decl.append(u'pragma export (C, {ctxt}, "{ctxt}");'
356
                                  .format(ctxt=LPREFIX))
357
        # Exhaustive simulation needs a backup of the context to quickly undo
Maxime Perrotin's avatar
Maxime Perrotin committed
358
        context_decl.append(u'{ctxt}_bk: {ctxt}_Ty;'
359 360 361 362 363
                                  .format(ctxt=LPREFIX))
    elif import_context:
        # Possibility to have the context defined outside the module
        # in order for a model checker to view/modify internals without any
        # copy at runtime
Maxime Perrotin's avatar
Maxime Perrotin committed
364
        context_decl.append(u'pragma import (C, ctxt, "{}_ctxt");'
365
                                  .format(import_context))
366

Maxime Perrotin's avatar
Maxime Perrotin committed
367
    if not simu and not instance:
Maxime Perrotin's avatar
Maxime Perrotin committed
368 369
        process_level_decl.extend(context_decl)

370
    aggreg_start_proc = []
Maxime Perrotin's avatar
Maxime Perrotin committed
371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416
    start_transition = []
    # Continuous State transition id
    if not instance:
        process_level_decl.append('CS_Only  : constant Integer := {};'
                                  .format(len(process.transitions)))

        for name, val in process.mapping.viewitems():
            # Test val, in principle there is a value but if the code targets
            # generation of properties, the model may have been cleant up and
            # in that case no value would be set..
            if name.endswith(u'START') and name != u'START' and val:
                process_level_decl.append(u'{name} : constant := {val};'
                                          .format(name=name, val=str(val)))

        # Declare start procedure for aggregate states XXX add in C generator
        # should create one START per "via" clause, TODO later
        for name, substates in aggregates.viewitems():
            proc_name = u'procedure {}{}START'.format(name, UNICODE_SEP)
            process_level_decl.append(u'{};'.format(proc_name))
            aggreg_start_proc.extend([u'{} is'.format(proc_name),
                                      'begin'])
            aggreg_start_proc.extend(u'runTransition({sub}{sep}START);'
                                     .format(sub=subname.statename,
                                             sep=UNICODE_SEP)
                                     for subname in substates)
            aggreg_start_proc.extend([u'end {}{}START;'
                                     .format(name, UNICODE_SEP),
                                     '\n'])

        # Add the declaration of the runTransition procedure
        process_level_decl.append('procedure runTransition(Id: Integer);')

        # Generate the code of the start transition (if process not empty)
        initDone =  u'{ctxt}.initDone := True;'.format(ctxt=LPREFIX)
        if not simu:
            start_transition = [u'begin']
            if process.transitions:
                start_transition.append(u'runTransition(0);')
            start_transition.append(initDone)
        else:
            start_transition = [u'procedure Startup is',
                                u'begin',
                                u'   runTransition(0);' if process.transitions
                                                       else 'null;',
                                initDone,
                                u'end Startup;']
417

Maxime Perrotin's avatar
Maxime Perrotin committed
418 419 420 421 422
    # Generate the TASTE template
    try:
        asn1_modules = '\n'.join(['with {dv};\nuse {dv};'.format(
            dv=dv.replace('-', '_'))
            for dv in process.asn1Modules])
423 424
        if process.asn1Modules:
            asn1_modules += '\nwith adaasn1rtl;\nuse adaasn1rtl;'
Maxime Perrotin's avatar
Maxime Perrotin committed
425 426
    except TypeError:
        asn1_modules = '--  No ASN.1 data types are used in this model'
Maxime Perrotin's avatar
Maxime Perrotin committed
427
    taste_template = [u'''\
Maxime Perrotin's avatar
Maxime Perrotin committed
428 429 430 431 432
-- This file was generated automatically: DO NOT MODIFY IT !

with System.IO;
use System.IO;

433
with Ada.Unchecked_Conversion;
434
with Ada.Numerics.Generic_Elementary_Functions;
435

Maxime Perrotin's avatar
Maxime Perrotin committed
436 437 438 439
{dataview}

with Interfaces;
use Interfaces;
440
{C}
Maxime Perrotin's avatar
Maxime Perrotin committed
441
package body {process_name} is'''.format(process_name=process_name,
442 443 444
                                         dataview=asn1_modules,
                                         C='with Interfaces.C.Strings;\n'
                                           'use Interfaces.C.Strings;'
Maxime Perrotin's avatar
Maxime Perrotin committed
445 446
                                            if simu else '') if not instance
                            else u"package body {} is".format(process_name)]
Maxime Perrotin's avatar
Maxime Perrotin committed
447

448
    generic_spec, instance_decl = "", ""
449 450 451 452 453
    if generic:
        generic_spec = u"generic\n"
        ri_list = external_ri_list(process)
        if ri_list:
            generic_spec += u"    with " + u";\n    with ".join(ri_list) + ';'
454 455 456
    if instance:
        instance_decl = u"with {};".format(process.instance_of_name)

Maxime Perrotin's avatar
Maxime Perrotin committed
457
    # Generate the source file (.ads) header
458
    ads_template = [u'''\
Maxime Perrotin's avatar
Maxime Perrotin committed
459 460 461
-- This file was generated automatically: DO NOT MODIFY IT !

{dataview}
Maxime Perrotin's avatar
Maxime Perrotin committed
462
{C}
463
{instance}
464
{generic}
465 466
package {process_name} is'''.format(generic=generic_spec,
                                    instance=instance_decl,
467
                                    process_name=process_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
468 469 470 471
                                    dataview=asn1_modules,
                                    C='with Interfaces.C.Strings;\n'
                                      'use Interfaces.C.Strings;'
                                        if simu else '')]
Maxime Perrotin's avatar
Maxime Perrotin committed
472
    dll_api = []
473
    if simu:
Maxime Perrotin's avatar
Maxime Perrotin committed
474
        ads_template.extend(context_decl)
475 476
        ads_template.append('--  API for simulation via DLL')
        dll_api.append('-- API to remotely change internal data')
477 478
        # Add function allowing to trace current state as a string
        process_level_decl.append("function get_state return chars_ptr "
479 480 481 482
                                  "is (New_String(states'Image({ctxt}.state)))"
                                  " with Export, Convention => C, "
                                  'Link_Name => "{name}_state";'
                                  .format(name=process_name, ctxt=LPREFIX))
483 484
        set_state_decl = "procedure set_state(new_state: chars_ptr)"
        ads_template.append("{};".format(set_state_decl))
485
        ads_template.append('pragma Export(C, set_state, "_set_state");')
486 487
        dll_api.append("{} is".format(set_state_decl))
        dll_api.append("begin")
488 489
        dll_api.append("{}.state := States'Value(Value(new_state));"
                       .format(LPREFIX))
490 491 492
        dll_api.append("end set_state;")
        dll_api.append("")

493 494 495 496 497 498 499 500 501
        # Save/restore state allow one step undo, as needed for model checking
        save_state_decl = "procedure save_context"
        restore_state_decl = "procedure restore_context"
        ads_template.append("{};".format(save_state_decl))
        ads_template.append('pragma Export(C, save_context, "_save_context");')
        ads_template.append("{};".format(restore_state_decl))
        ads_template.append('pragma Export(C, restore_context, "_restore_context");')
        dll_api.append("{} is".format(save_state_decl))
        dll_api.append("begin")
502
        dll_api.append("{ctxt}_bk := {ctxt};".format(ctxt=LPREFIX))
503 504 505 506
        dll_api.append("end save_context;")
        dll_api.append("")
        dll_api.append("{} is".format(restore_state_decl))
        dll_api.append("begin")
507
        dll_api.append("{ctxt} := {ctxt}_bk;".format(ctxt=LPREFIX))
508 509 510
        dll_api.append("end restore_context;")
        dll_api.append("")

511 512 513 514 515
        # Declare procedure Startup in .ads
        ads_template.append(u'procedure Startup;')
        ads_template.append(u'pragma Export(C, Startup, "{}_startup");'
                            .format(process_name))

516 517 518 519 520 521 522 523 524 525 526
        # interface to get/set state aggregations XXX add to C generator
        for substates in aggregates.viewvalues():
            for each in substates:
                process_level_decl.append(
                        u"function get_{name}_state return chars_ptr "
                        u"is (New_String(states'Image({ctxt}.{name}{sep}state)"
                        ")) with Export, Convention => C, "
                        'Link_Name => "{proc}_{name}_state";'
                        .format(name=each.statename, ctxt=LPREFIX,
                                proc=process_name, sep=UNICODE_SEP))

527 528
        # Functions to get gobal variables (length and value)
        for var_name, (var_type, _) in process.variables.viewitems():
529
            # Getters for external applications to view local variables via dll
530 531 532 533 534
            process_level_decl.append(u"function l_{name}_value"
                                     u" return access {sort} "
                                     u"is ({prefix}.{name}'access) with Export,"
                                     u" Convention => C,"
                                     u' Link_Name => "{name}_value";'
535
                                     .format(prefix=LPREFIX, name=var_name,
536 537
                                              sort=type_name(var_type)))
            # Setters for local variables
538
            setter_decl = u"procedure dll_set_l_{name}(value: access {sort})"\
539
                          .format(name=var_name, sort=type_name(var_type))
540 541
            ads_template.append(u'{};'.format(setter_decl))
            ads_template.append(u'pragma Export(C, dll_set_l_{name},'
542
                                ' "_set_{name}");'.format(name=var_name))
543 544 545 546
            dll_api.append(u'{} is'.format(setter_decl))
            dll_api.append(u'begin')
            dll_api.append(u'{}.{} := value.all;'.format(LPREFIX, var_name))
            dll_api.append(u'end dll_set_l_{};'.format(var_name))
547 548
            dll_api.append('')

Maxime Perrotin's avatar
Maxime Perrotin committed
549 550 551 552 553 554
    # Generate the the code of the procedures
    inner_procedures_code = []
    for proc in process.content.inner_procedures:
        proc_code, proc_local = generate(proc)
        process_level_decl.extend(proc_local)
        inner_procedures_code.extend(proc_code)
555 556 557 558
        if proc.exported:
            # Exported procedures must be declared in the .ads
            pi_header = procedure_header(proc)
            ads_template.append(u'{};'.format(pi_header))
559
            if not proc.external and not generic:
560 561 562 563
                ads_template.append(u'pragma Export'
                                    u'(C, p{sep}{proc_name}, "_{proc_name}");'
                                    .format(sep=UNICODE_SEP,
                                            proc_name=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
564 565 566 567 568 569 570

    # Generate the code for the process-level variable declarations
    taste_template.extend(process_level_decl)

    # Add the code of the procedures definitions
    taste_template.extend(inner_procedures_code)

571 572 573 574
    # Generate the code of the START procedures of state aggregations
    # XXX to be added to C generator
    taste_template.extend(aggreg_start_proc)

575 576 577
    # Add the code of the DLL interface
    taste_template.extend(dll_api)

Maxime Perrotin's avatar
Maxime Perrotin committed
578 579 580
    # Generate the code for each input signal (provided interface) and timers
    for signal in process.input_signals + [
                        {'name': timer.lower()} for timer in process.timers]:
581
        signame = signal.get('name', u'START')
Maxime Perrotin's avatar
Maxime Perrotin committed
582
        if signame == u'START':
Maxime Perrotin's avatar
Maxime Perrotin committed
583
            continue
584
        pi_header = u'procedure {sig_name}'.format(sig_name=signame)
585
        param_name = signal.get('param_name') \
Maxime Perrotin's avatar
Maxime Perrotin committed
586
                                or u'{}_param'.format(signame)
Maxime Perrotin's avatar
Maxime Perrotin committed
587 588
        # Add (optional) PI parameter (only one is possible in TASTE PI)
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
589
            typename = type_name(signal['type'])
590
            pi_header += u'({pName}: access {sort})'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
591
                                        pName=param_name, sort=typename)
Maxime Perrotin's avatar
Maxime Perrotin committed
592 593

        # Add declaration of the provided interface in the .ads file
594
        ads_template.append(u'--  Provided interface "{}"'.format(signame))
Maxime Perrotin's avatar
Maxime Perrotin committed
595
        ads_template.append(pi_header + ';')
596
        if not generic:
597 598 599
            ads_template.append(
                    u'pragma Export(C, {name}, "{proc}_PI_{name}");'
                     .format(name=signame.lower(), proc=process_name.lower()))
600 601 602 603 604

        if simu:
            # Generate code for the mini-cv template
            params = [(param_name, type_name(signal['type'], use_prefix=False),
                      'IN')] if 'type' in signal else []
605
            minicv.append(aadl_template(signame, params, 'RI'))
Maxime Perrotin's avatar
Maxime Perrotin committed
606 607 608 609

        pi_header += ' is'
        taste_template.append(pi_header)
        taste_template.append('begin')
610 611 612 613

        def execute_transition(state):
            ''' Generate the code that triggers the transition for the current
                state/input combination '''
614
            input_def = mapping[signame].get(state)
615
            # Check for nested states to call optional exit procedure
616
            state_tree = state.split(UNICODE_SEP)
Maxime Perrotin's avatar
Maxime Perrotin committed
617
            context = process
618 619 620 621 622 623
            exitlist = []
            current = ''
            trans = input_def and process.transitions[input_def.transition_id]
            while state_tree:
                current = current + state_tree.pop(0)
                for comp in context.composite_states:
624
                    if current.lower() == comp.statename.lower():
625 626 627
                        if comp.exit_procedure:
                            exitlist.append(current)
                        context = comp
628
                        current = current + UNICODE_SEP
629 630 631 632
                        break
            for each in reversed(exitlist):
                if trans and all(each.startswith(trans_st)
                                 for trans_st in trans.possible_states):
633
                    taste_template.append(u'p{sep}{ref}{sep}exit;'
634
                                          .format(ref=each, sep=UNICODE_SEP))
635

Maxime Perrotin's avatar
Maxime Perrotin committed
636 637 638 639
            if input_def:
                for inp in input_def.parameters:
                    # Assign the (optional and unique) parameter
                    # to the corresponding process variable
640 641
                    taste_template.append(u'{ctxt}.{inp} := {tInp}.all;'
                                          .format(ctxt=LPREFIX,
642 643
                                                  inp=inp,
                                                  tInp=param_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
644 645
                # Execute the correponding transition
                if input_def.transition:
Maxime Perrotin's avatar
Maxime Perrotin committed
646
                    taste_template.append(u'runTransition({idx});'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
647 648
                        idx=input_def.transition_id))
                else:
Maxime Perrotin's avatar
Maxime Perrotin committed
649
                    taste_template.append('runTransition(CS_Only);')
Maxime Perrotin's avatar
Maxime Perrotin committed
650
            else:
651
                taste_template.append('runTransition(CS_Only);')
652

Maxime Perrotin's avatar
Maxime Perrotin committed
653 654
        if not instance:
            taste_template.append('case {}.state is'.format(LPREFIX))
655 656 657 658 659 660 661

        def case_state(state):
            ''' Recursive function (in case of state aggregation) to generate
                the code that calls the proper transition according
                to the current state
                The input name is in signame
            '''
662
            if state.endswith(u'START'):
663
                return
664
            taste_template.append(u'when {state} =>'.format(state=state))
665
            input_def = mapping[signame].get(state)
666
            if state in aggregates.viewkeys():
667
                # State aggregation:
Maxime Perrotin's avatar
Maxime Perrotin committed
668 669
                # - find which substate manages this input
                # - add a swich case on the corresponding substate
670 671
                taste_template.append(u'-- this is a state aggregation')
                for sub in aggregates[state]:
672 673 674 675 676 677 678 679
                    if [a for a in sub.mapping.viewkeys()
                            if a in mapping[signame].viewkeys()]:
                        taste_template.append(u'case '
                                              u'{ctxt}.{sub}{sep}state is'
                                              .format(ctxt=LPREFIX,
                                                     sub=sub.statename,
                                                     sep=UNICODE_SEP))
                        for par in sub.mapping.viewkeys():
680
                            case_state(par)
681 682 683 684
                        taste_template.append('when others =>')
                        taste_template.append('null;')
                        taste_template.append('end case;')
                        break
685 686
                else:
                    # Input is not managed in the state aggregation
687 688 689
                    if input_def:
                        # check if it is managed one level above
                        execute_transition(state)
690
                    taste_template.append('null;')
Maxime Perrotin's avatar
Maxime Perrotin committed
691 692
            else:
                execute_transition(state)
693

Maxime Perrotin's avatar
Maxime Perrotin committed
694 695 696 697 698 699 700 701 702 703
        if not instance:
            map(case_state, reduced_statelist) # XXX update C generator
            taste_template.append('when others =>')
            taste_template.append('runTransition(CS_Only);')
            taste_template.append('end case;')
        else:
            inst_call = u"{}_Instance.{}".format(process_name, signame)
            if 'type' in signal:
                inst_call += u"({})".format(param_name)
            taste_template.append(inst_call + ";")
704 705

        taste_template.append(u'end {};'.format(signame))
Maxime Perrotin's avatar
Maxime Perrotin committed
706 707 708 709 710
        taste_template.append('\n')

    # for the .ads file, generate the declaration of the required interfaces
    # output signals are the asynchronous RI - only one parameter
    for signal in process.output_signals:
711

712 713
        param_name = signal.get('param_name') \
                                or u'{}_param'.format(signal['name'])
Maxime Perrotin's avatar
Maxime Perrotin committed
714
        # Add (optional) RI parameter
715 716 717
        # Paramless TMs: when targetting simulation, the name of the TM is
        # passed as single parameter. This allows the simualor to handle them
        # dynamically, with a single callback function for all TMs
Maxime Perrotin's avatar
Maxime Perrotin committed
718
        param_spec = '' if not simu else "(tm: chars_ptr)"
Maxime Perrotin's avatar
Maxime Perrotin committed
719
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
720
            typename = type_name(signal['type'])
721 722 723 724 725
            param_spec = u'({pName}: access {sort}{shared})' \
                         .format(pName=param_name,
                                 sort=typename,
                                 shared=u'; Size: Integer'
                                        if SHARED_LIB else '')
726 727 728 729
        if not generic:
            ads_template.append(u'--  {}equired interface "{}"'
                                .format("Paramless r" if not 'type' in signal
                                    else "R", signal['name']))
730 731 732 733
        if simu:
            # When generating a shared library, we need a callback mechanism
            ads_template.append(u'type {}_T is access procedure{};'
                                .format(signal['name'], param_spec))
Maxime Perrotin's avatar
Maxime Perrotin committed
734 735 736 737 738
            ads_template.append(u'pragma Convention(Convention => C,'
                                u' Entity => {}_T);'.format(signal['name']))
            ads_template.append(u'RI{sep}{sig} : {sig}_T;'
                                .format(sep=UNICODE_SEP, sig=signal['name']))
            ads_template.append(u'procedure Register_{sig}(Callback: {sig}_T);'
739
                                .format(sig=signal['name']))
Maxime Perrotin's avatar
Maxime Perrotin committed
740
            ads_template.append(u'pragma Export(C, Register_{sig},'
741 742
                                ' "register_{sig}");'
                                .format(sig=signal['name']))
743 744 745 746

            # Generate code for the mini-cv template
            params = [(param_name, type_name(signal['type'], use_prefix=False),
                      'IN')] if 'type' in signal else []
747
            minicv.append(aadl_template(signal['name'], params, 'PI'))
748

Maxime Perrotin's avatar
Maxime Perrotin committed
749 750
            taste_template.append(u'procedure Register_{sig}'
                                  u'(Callback:{sig}_T) is'
751
                                  .format(sig=signal['name']))
Maxime Perrotin's avatar
Maxime Perrotin committed
752 753 754 755 756
            taste_template.append(u'begin')
            taste_template.append(u'RI{sep}{sig} := Callback;'
                                  .format(sep=UNICODE_SEP, sig=signal['name']))
            taste_template.append(u'end Register_{};'.format(signal['name']))
            taste_template.append(u'')
757
        elif not generic:
Maxime Perrotin's avatar
Maxime Perrotin committed
758 759 760 761 762 763 764 765 766
            ads_template.append(u'procedure RI{}{}{};'
                                .format(UNICODE_SEP,
                                        signal['name'],
                                        param_spec))
            ads_template.append(u'pragma import(C, RI{sep}{sig},'
                                u' "{proc}_RI_{sig}");'
                                .format(sep=UNICODE_SEP,
                                        sig=signal['name'],
                                        proc=process_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
767 768

    # for the .ads file, generate the declaration of the external procedures
769
    for proc in (proc for proc in process.procedures if proc.external):
Maxime Perrotin's avatar
Maxime Perrotin committed
770 771 772
        ri_header = u'procedure RI{sep}{sig_name}'.format(
                                                     sep=UNICODE_SEP,
                                                     sig_name=proc.inputString)
Maxime Perrotin's avatar
Maxime Perrotin committed
773
        params = []
774 775 776 777
        params_spec = u""
        if simu:
            # For simulators: add the TM name as first parameter
            params.append("tm: chars_ptr")
Maxime Perrotin's avatar
Maxime Perrotin committed
778
        for param in proc.fpar:
Maxime Perrotin's avatar
Maxime Perrotin committed
779
            typename = type_name(param['type'])
780
            params.append(u'{par[name]}: access {sort}{shared}'
Maxime Perrotin's avatar
Maxime Perrotin committed
781
                          .format(par=param,
782 783 784 785
                                  sort=typename,
                                  shared=u"; {}_Size: Integer"
                                         .format(param['name'])
                                         if SHARED_LIB else ""))
Maxime Perrotin's avatar
Maxime Perrotin committed
786
        if params:
787 788
            params_spec = "({})".format("; ".join(params))
            ri_header += params_spec
789 790
        ads_template.append(u'--  Sync required interface "{}"'
                            .format(proc.inputString))
791 792 793 794
        if simu:
            # As for async TM, generate a callback mechanism
            ads_template.append(u"type {}_T is access procedure{};"
                                .format(proc.inputString, params_spec))
Maxime Perrotin's avatar
Maxime Perrotin committed
795 796 797 798 799
            ads_template.append(u'pragma Convention(Convention => C,'
                                u' Entity => {}_T);'.format(proc.inputString))
            ads_template.append(u'RI{sep}{sig} : {sig}_T;'
                                .format(sep=UNICODE_SEP, sig=proc.inputString))
            ads_template.append(u'procedure Register_{sig}(Callback: {sig}_T);'
800
                                .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
801 802
            ads_template.append(u'pragma Export(C, Register_{sig},'
                                u' "register_{sig}");'
803
                                .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
804
            taste_template.append(u'procedure Register_{sig}'
805 806
                                  '(Callback:{sig}_T) is'
                                  .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
807 808 809 810 811 812
            taste_template.append(u'begin')
            taste_template.append(u'RI{sep}{sig} := Callback;'
                                  .format(sep=UNICODE_SEP,
                                          sig=proc.inputString))
            taste_template.append(u'end Register_{};'.format(proc.inputString))
            taste_template.append(u'')
813

814
        elif not generic:
815
            ads_template.append(ri_header + u';')
Maxime Perrotin's avatar
Maxime Perrotin committed
816 817 818 819 820
            ads_template.append(u'pragma import(C, RI{sep}{sig},'
                                u' "{proc}_RI_{sig}");'
                                .format(sep=UNICODE_SEP,
                                        sig=proc.inputString,
                                        proc=process_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
821 822 823

    # for the .ads file, generate the declaration of timers set/reset functions
    for timer in process.timers:
824 825 826 827 828
        ads_template.append(u'--  Timer {} SET and RESET functions'
                            .format(timer))
        if simu:
            # Declare callback registration for the SET and RESET functions
            ads_template.append(u'type SET_{}_T is access procedure'
829
                                 '(name: chars_ptr; duration: Asn1Int);'
830
                                .format(timer))
Maxime Perrotin's avatar
Maxime Perrotin committed
831 832
            ads_template.append(u'type RESET_{}_T is access procedure'
                                '(name: chars_ptr);'.format(timer))
833
            for each in ('', 'RE'):
834 835
                ads_template.append(u'pragma Convention(Convention => C,'
                                    u' Entity => {re}SET_{t}_T);'
836
                                    .format(re=each, t=timer))
837
                ads_template.append(u'{re}SET_{t} : {re}SET_{t}_T;'
838
                                    .format(re=each, t=timer))
839 840
                ads_template.append(u'procedure Register_{re}SET_{t}'
                                    u'(Callback: {re}SET_{t}_T);'
841
                                    .format(re=each, t=timer))
842 843
                ads_template.append(u'pragma Export(C, Register_{re}SET_{t},'
                                    u' "register_{re}SET_{t}");'
844 845 846
                                    .format(re=each, t=timer))
            # Code for the SET/RESET timer callback registration
            for each in ('', 'RE'):
847 848
                taste_template.append(u'procedure Register_{re}SET_{t}'
                                      u'(Callback:{re}SET_{t}_T) is'
849
                                      .format(re=each, t=timer))
850 851
                taste_template.append(u'begin')
                taste_template.append(u'{re}SET_{t} := Callback;'
852
                                      .format(re=each, t=timer))
853
                taste_template.append(u'end Register_{re}SET_{t};'
854 855 856
                                      .format(re=each, t=timer))
                taste_template.append('')

857 858 859 860
        elif not generic:
            ads_template.append(
               u'procedure SET_{}(val: access asn1SccT_UInt32);'.format(timer))
            ads_template.append(
861 862
                    u'pragma import(C, SET_{timer}, "{proc}_RI_set_{timer}");'
                    .format(timer=timer, proc=process_name))
863
            ads_template.append(u'procedure RESET_{};'.format(timer))
864
            ads_template.append(
865 866
                 u'pragma import(C, RESET_{timer}, "{proc}_RI_reset_{timer}");'
                 .format(timer=timer, proc=process_name))
867 868 869 870
        else:
            # Generic functions get the SET and RESET from template
            pass

Maxime Perrotin's avatar
Maxime Perrotin committed
871

872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888
    if instance:
        # Instance of a process type, all the RIs (including timers) must
        # be gathered to instantiate the package
        pkg_decl = (u"package {}_Instance is new {}"
                    .format(process_name, process.instance_of_name))
        ri_list = [u"RI{sep}{name}".format(sep=UNICODE_SEP, name=sig['name'])
                   for sig in process.output_signals]
        ri_list.extend ([u"RI{sep}{name}".format(sep=UNICODE_SEP,
                                                 name=proc.inputString)
                        for proc in process.procedures if proc.external])
        ri_list.extend([u"set_{}".format(timer) for timer in process.timers])
        ri_list.extend([u"reset_{}".format(timer) for timer in process.timers])
        ri_inst = [u"{ri} => {ri}".format(ri=ri) for ri in ri_list]
        if ri_inst:
            pkg_decl += u" ({})".format(u", ".join(ri_inst))
        ads_template.append(pkg_decl + u";")

889 890 891 892 893 894 895 896 897
    if simu and process.cs_mapping:
        # Callback registration for Check_Queue
        taste_template.append(u'procedure Register_Check_Queue'
                              u'(Callback: Check_Queue_T) is')
        taste_template.append(u'begin')
        taste_template.append(u'Check_Queue := Callback;')
        taste_template.append(u'end Register_Check_Queue;')
        taste_template.append(u'')

898 899 900 901 902 903
    # If the process has no input, output, procedures, or timers, then Ada
    # will not compile the body - generate a pragma to fix this
    if not process.timers and not process.procedures \
            and not process.input_signals and not process.output_signals:
        ads_template.append('pragma elaborate_body;')

904 905
    # Transform inner labels to floating labels
    Helper.inner_labels_to_floating(process)
Maxime Perrotin's avatar
Maxime Perrotin committed
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921

    # Generate the code for all transitions
    code_transitions = []
    local_decl_transitions = []
    for proc_tr in process.transitions:
        code_tr, tr_local_decl = generate(proc_tr)
        code_transitions.append(code_tr)
        local_decl_transitions.extend(tr_local_decl)

    # Generate code for the floating labels
    code_labels = []
    for label in process.content.floating_labels:
        code_label, label_decl = generate(label)
        local_decl_transitions.extend(label_decl)
        code_labels.extend(code_label)

922
    # Generate the code of the runTransition procedure, if needed
Maxime Perrotin's avatar
Maxime Perrotin committed
923
    if process.transitions and not instance:
924 925
        taste_template.append('procedure runTransition(Id: Integer) is')
        taste_template.append('trId : Integer := Id;')
926 927
        if process.cs_mapping:
            taste_template.append(
928
                              'msgPending : aliased Asn1Boolean := True;')
Maxime Perrotin's avatar
Maxime Perrotin committed
929

930 931 932
        # Declare the local variables needed by the transitions in the template
        taste_template.extend(set(local_decl_transitions))
        taste_template.append('begin')
933

934 935 936
        # Generate a loop that ends when a next state is reached
        # (there can be chained transition when entering a nested state)
        taste_template.append('while (trId /= -1) loop')
Maxime Perrotin's avatar
Maxime Perrotin committed
937

938 939
        # Generate the switch-case on the transition id
        taste_template.append('case trId is')
Maxime Perrotin's avatar
Maxime Perrotin committed
940

941 942 943 944 945 946 947
        for idx, val in enumerate(code_transitions):
            taste_template.append(u'when {idx} =>'.format(idx=idx))
            val = [u'{line}'.format(line=l) for l in val]
            if val:
                taste_template.extend(val)
            else:
                taste_template.append('null;')
Maxime Perrotin's avatar
Maxime Perrotin committed
948

949 950 951 952
        taste_template.append('when CS_Only =>')
        taste_template.append('trId := -1;')
        taste_template.append('goto next_transition;')

953 954 955 956 957 958 959 960
        taste_template.append('when others =>')
        taste_template.append('null;')

        taste_template.append('end case;')
        if code_labels:
            # Due to nested states (chained transitions) jump over label code
            # (NEXTSTATEs do not return from runTransition)
            taste_template.append('goto next_transition;')
Maxime Perrotin's avatar
Maxime Perrotin committed
961

962 963
        # Add the code for the floating labels
        taste_template.extend(code_labels)
Maxime Perrotin's avatar
Maxime Perrotin committed
964

965
        taste_template.append('<<next_transition>>')
966 967 968 969 970

        # After completing active transition(s), check continuous signals:
        #     - Check current state(s)
        #     - For each continuous signal generate code (test+transition)
        # XXX add to C backend
971
        if process.cs_mapping and not simu:
972
            taste_template.append('--  Process continuous signals')
973
            taste_template.append('if {}.initDone then'.format(LPREFIX))
974 975
            taste_template.append("Check_Queue(msgPending'access);")
            taste_template.append('end if;')
976 977
            ads_template.append(
                    u'procedure Check_Queue(res: access Asn1Boolean);')
978 979 980 981
            if not generic:
                ads_template.append(
                    u'pragma import(C, Check_Queue, "{proc}_check_queue");'
                    .format(proc=process_name))
982 983 984 985 986 987 988 989 990 991 992 993 994 995
        elif process.cs_mapping and simu:
            taste_template.append('if {}.initDone then'.format(LPREFIX))
            taste_template.append("Check_Queue(msgPending'access);")
            taste_template.append('end if;')
            # simulation: create a callback registration function
            ads_template.append(u'type Check_Queue_T is access procedure'
                                u'(res: access Asn1Boolean);')
            ads_template.append(u'pragma Convention(Convention => C,'
                                u' Entity => Check_Queue_T);')
            ads_template.append(u'Check_Queue : Check_Queue_T;')
            ads_template.append(u'procedure Register_Check_Queue'
                                u'(Callback: Check_Queue_T);')
            ads_template.append(u'pragma Export(C, Register_Check_Queue,'
                                ' "register_check_queue");')
996 997 998
        else:
            taste_template.append('null;')

999
        # Process the continuous signals in state aggregations first
1000
        done = []
1001 1002
        sep = 'if '
        last = ''
1003 1004
        # flag indicating there are CS in nested states but not at root
        need_final_endif = False
1005 1006 1007 1008 1009
        for cs, agg in product(process.cs_mapping.viewitems(),
                               aggregates.viewitems()):
            (statename, cs_item), (agg_name, substates) = cs, agg
            for each in substates:
                if statename in each.mapping.viewkeys():
1010
                    need_final_endif = True
1011 1012
                    taste_template.append(u'{first}if not msgPending and '
                            u'trId = -1 and '
1013
                            u'{ctxt}.state = {s1} and '
1014
                            u'{ctxt}.{s2}{unisep}state = {s3} then'
1015
                            .format(ctxt=LPREFIX, s1=agg_name,
1016
                                s2=each.statename, unisep=UNICODE_SEP,
1017
                                s3=statename, first='els' if done else ''))
1018 1019 1020 1021 1022 1023 1024 1025 1026
                    # Change priority 0 (no priority set) to lowest priority
                    lowest_priority = max(item.priority for item in cs_item)
                    for each in cs_item:
                        if each.priority == 0:
                            each.priority = lowest_priority + 1
                    for provided_clause in sorted(cs_item,
                                                 key=lambda itm: itm.priority):
                        taste_template.append(u'-- Priority {}'
                                             .format