AdaGenerator.py 125 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

100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
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)
130 131 132 133 134 135

    for timer in process.timers:
        result.append(u"procedure set_{}(val: access asn1SccT_Uint32)"
                      .format(timer))
        result.append(u"procedure reset_{}"
                      .format(timer))
136 137 138
    return result


Maxime Perrotin's avatar
Maxime Perrotin committed
139
@singledispatch
140
def generate(*args, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
141 142
    ''' Generate the code for an item of the AST '''
    raise TypeError('[AdaGenerator] Unsupported AST construct')
143
    return [], []
Maxime Perrotin's avatar
Maxime Perrotin committed
144 145


Maxime Perrotin's avatar
Maxime Perrotin committed
146
# Processing of the AST
Maxime Perrotin's avatar
Maxime Perrotin committed
147
@generate.register(ogAST.Process)
148 149 150 151 152
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.
    '''
153
    # support generation of code of a process type
154 155 156 157 158 159 160 161 162 163 164 165 166
    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.
        generate(process_instance, simu, instance=True)
167

Maxime Perrotin's avatar
Maxime Perrotin committed
168 169 170 171 172 173
    global TYPES
    TYPES = process.dataview
    del OUT_SIGNALS[:]
    del PROCEDURES[:]
    OUT_SIGNALS.extend(process.output_signals)
    PROCEDURES.extend(process.procedures)
174
    global SHARED_LIB
175
    global LPREFIX
176 177
    if simu:
        SHARED_LIB = True
178
        LPREFIX = process_name + u'_ctxt'
Maxime Perrotin's avatar
Maxime Perrotin committed
179

180 181 182 183
    # 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 ""

184 185 186 187 188 189 190 191 192 193 194
    # 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 = []
195 196 197 198 199
        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 ''
200 201 202 203 204 205
        # 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} '
206 207 208
                          '{{encoding=>Native;}};'.format(pname=param_name,
                                                          sort=sort,
                                                          io=direction))
209 210 211 212 213 214 215 216 217
        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)

218
    # bash script to simulate the system (TEMPORARY)
219 220 221 222 223 224 225 226

    # 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
227 228
    asn1_uniq = ' '.join(each for each in parent.asn1_filenames
                         if each != 'dataview-uniq.asn')
229
    pr_path = ' '.join(parent.pr_files) if None not in parent.pr_files else ''
230 231 232 233 234
    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)

235
    simu_script = '''#!/bin/bash -e
236 237 238 239 240
rm -rf {pr}_simu
mkdir -p {pr}_simu
cp {pr_path} {asn1} {pr}_simu
cd {pr}_simu
opengeode {pr_names} --shared
241
cat {uniq} >> dataview-uniq.asn '''.format(pr=process_name.lower(),
Maxime Perrotin's avatar
Maxime Perrotin committed
242 243 244 245
                                           asn1=asn1_filenames,
                                           pr_path=pr_path,
                                           uniq=asn1_uniq or '/dev/null',
                                           pr_names=pr_names)
246 247 248 249 250 251 252

    if asn1_filenames:
        simu_script += '''
asn1.exe -Ada -typePrefix asn1Scc -equal {asn1}
asn1.exe -c -typePrefix asn1Scc -equal {asn1}'''.format(asn1=asn1_filenames)

    simu_script += '''
253 254 255
gnatmake -gnat2012 -c *.adb
gnatbind -n -Llib{pr} {pr}
gnatmake -c -gnat2012 b~{pr}.adb
256
gcc -shared -fPIC -o lib{pr}.so b~{pr}.o {pr}.o {asn1_mod} adaasn1rtl.o -lgnat
257
rm -f dataview-uniq.c dataview-uniq.h
258
asn2aadlPlus dataview-uniq.asn DataView.aadl
259 260 261
aadl2glueC DataView.aadl {pr}_interface.aadl
asn2dataModel -toPython dataview-uniq.asn
make -f Makefile.python
262
echo "errCodes=$(taste-asn1-errCodes ./dataview-uniq.h)" >>datamodel.py
263
LD_LIBRARY_PATH=. opengeode-simulator
264
'''.format(pr=process_name.lower(),
265 266
           asn1_files=asn1_filenames,
           asn1_mod=' '.join(asn1_modules))
267

268

Maxime Perrotin's avatar
Maxime Perrotin committed
269 270
    LOG.info('Generating Ada code for process ' + str(process_name))

271
    # In case model has nested states, flatten everything
272
    Helper.flatten(process, sep=UNICODE_SEP)
273

274
    # Process State aggregations (Parallel states) XXX Add to C backend
275

276 277
    # Find recursively in the AST all state aggregations
    # Format: {'aggregation_name' : [list of ogAST.CompositeState]
278
    aggregates = Helper.state_aggregations(process)
279

280 281 282
    # 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)
283

Maxime Perrotin's avatar
Maxime Perrotin committed
284 285 286 287
    # 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
288 289 290
    VARIABLES.update(process.variables)

    process_level_decl = []
291

292
    # Establish the list of states (excluding START states) XXX update C backend
293
    full_statelist = set(chain(aggregates.viewkeys(),
294 295
                               (name for name in process.mapping.iterkeys()
                                    if not name.endswith(u'START'))))
296
    reduced_statelist = {s for s in full_statelist if s not in parallel_states}
Maxime Perrotin's avatar
Maxime Perrotin committed
297
    if aggregates:
298 299
        # Parallel states in a state aggregation may terminate
        full_statelist.add(u'{}finished'.format(UNICODE_SEP))
300

Maxime Perrotin's avatar
Maxime Perrotin committed
301
    context_decl = []
302
    if full_statelist:
Maxime Perrotin's avatar
Maxime Perrotin committed
303
        context_decl.append(u'type States is ({});'
304
                            .format(u', '.join(full_statelist) or u'No_State'))
305 306

    # Generate the code to declare process-level context
Maxime Perrotin's avatar
Maxime Perrotin committed
307
    context_decl.extend(['type {}_Ty is'.format(LPREFIX), 'record'])
308

309
    if full_statelist:
Maxime Perrotin's avatar
Maxime Perrotin committed
310
        context_decl.append('state : States;')
311

Maxime Perrotin's avatar
Maxime Perrotin committed
312
    context_decl.append('initDone : Boolean := False;')
313

Maxime Perrotin's avatar
Maxime Perrotin committed
314
    # State aggregation: add list of substates (XXX to be added in C generator)
315 316
    for substates in aggregates.viewvalues():
        for each in substates:
Maxime Perrotin's avatar
Maxime Perrotin committed
317
            context_decl.append(u'{}{}state: States;'
318
                                      .format(each.statename, UNICODE_SEP))
Maxime Perrotin's avatar
Maxime Perrotin committed
319

Maxime Perrotin's avatar
Maxime Perrotin committed
320 321 322 323
    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
324
            dst, dstr, dlocal = expression(def_value)
325 326 327
            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
328
            assert not dst and not dlocal, 'DCL: Expecting a ground expression'
Maxime Perrotin's avatar
Maxime Perrotin committed
329
        context_decl.append(
330 331
                        u'{n} : aliased {sort}{default};'
                        .format(n=var_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
332 333
                                sort=type_name(var_type),
                                default=u' := ' + dstr if def_value else u''))
Maxime Perrotin's avatar
Maxime Perrotin committed
334

Maxime Perrotin's avatar
Maxime Perrotin committed
335
    context_decl.append('end record;')
336 337
    # context is aliased so that the model checker can work with access type
    context_decl.append('{ctxt}: aliased {ctxt}_Ty;'.format(ctxt=LPREFIX))
338
    if simu:
339 340
        # 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
341
        context_decl.append(u'pragma export (C, {ctxt}, "{ctxt}");'
342
                                  .format(ctxt=LPREFIX))
343
        # Exhaustive simulation needs a backup of the context to quickly undo
Maxime Perrotin's avatar
Maxime Perrotin committed
344
        context_decl.append(u'{ctxt}_bk: {ctxt}_Ty;'
345 346 347 348 349
                                  .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
350
        context_decl.append(u'pragma import (C, ctxt, "{}_ctxt");'
351
                                  .format(import_context))
352

Maxime Perrotin's avatar
Maxime Perrotin committed
353
    if not simu and not instance:
Maxime Perrotin's avatar
Maxime Perrotin committed
354 355
        process_level_decl.extend(context_decl)

356
    aggreg_start_proc = []
Maxime Perrotin's avatar
Maxime Perrotin committed
357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402
    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;']
403

Maxime Perrotin's avatar
Maxime Perrotin committed
404 405 406 407 408
    # Generate the TASTE template
    try:
        asn1_modules = '\n'.join(['with {dv};\nuse {dv};'.format(
            dv=dv.replace('-', '_'))
            for dv in process.asn1Modules])
409 410
        if process.asn1Modules:
            asn1_modules += '\nwith adaasn1rtl;\nuse adaasn1rtl;'
Maxime Perrotin's avatar
Maxime Perrotin committed
411 412
    except TypeError:
        asn1_modules = '--  No ASN.1 data types are used in this model'
Maxime Perrotin's avatar
Maxime Perrotin committed
413
    taste_template = [u'''\
Maxime Perrotin's avatar
Maxime Perrotin committed
414 415 416 417 418
-- This file was generated automatically: DO NOT MODIFY IT !

with System.IO;
use System.IO;

419
with Ada.Unchecked_Conversion;
420
with Ada.Numerics.Generic_Elementary_Functions;
421

Maxime Perrotin's avatar
Maxime Perrotin committed
422 423 424 425
{dataview}

with Interfaces;
use Interfaces;
426
{C}
Maxime Perrotin's avatar
Maxime Perrotin committed
427
package body {process_name} is'''.format(process_name=process_name,
428 429 430
                                         dataview=asn1_modules,
                                         C='with Interfaces.C.Strings;\n'
                                           'use Interfaces.C.Strings;'
Maxime Perrotin's avatar
Maxime Perrotin committed
431 432
                                            if simu else '') if not instance
                            else u"package body {} is".format(process_name)]
Maxime Perrotin's avatar
Maxime Perrotin committed
433

434
    generic_spec, instance_decl = "", ""
435 436 437 438 439
    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) + ';'
440 441 442
    if instance:
        instance_decl = u"with {};".format(process.instance_of_name)

Maxime Perrotin's avatar
Maxime Perrotin committed
443
    # Generate the source file (.ads) header
444
    ads_template = [u'''\
Maxime Perrotin's avatar
Maxime Perrotin committed
445 446 447
-- This file was generated automatically: DO NOT MODIFY IT !

{dataview}
Maxime Perrotin's avatar
Maxime Perrotin committed
448
{C}
449
{instance}
450
{generic}
451 452
package {process_name} is'''.format(generic=generic_spec,
                                    instance=instance_decl,
453
                                    process_name=process_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
454 455 456 457
                                    dataview=asn1_modules,
                                    C='with Interfaces.C.Strings;\n'
                                      'use Interfaces.C.Strings;'
                                        if simu else '')]
Maxime Perrotin's avatar
Maxime Perrotin committed
458
    dll_api = []
459
    if simu:
Maxime Perrotin's avatar
Maxime Perrotin committed
460
        ads_template.extend(context_decl)
461 462
        ads_template.append('--  API for simulation via DLL')
        dll_api.append('-- API to remotely change internal data')
463 464
        # Add function allowing to trace current state as a string
        process_level_decl.append("function get_state return chars_ptr "
465 466 467 468
                                  "is (New_String(states'Image({ctxt}.state)))"
                                  " with Export, Convention => C, "
                                  'Link_Name => "{name}_state";'
                                  .format(name=process_name, ctxt=LPREFIX))
469 470
        set_state_decl = "procedure set_state(new_state: chars_ptr)"
        ads_template.append("{};".format(set_state_decl))
471
        ads_template.append('pragma Export(C, set_state, "_set_state");')
472 473
        dll_api.append("{} is".format(set_state_decl))
        dll_api.append("begin")
474 475
        dll_api.append("{}.state := States'Value(Value(new_state));"
                       .format(LPREFIX))
476 477 478
        dll_api.append("end set_state;")
        dll_api.append("")

479 480 481 482 483 484 485 486 487
        # 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")
488
        dll_api.append("{ctxt}_bk := {ctxt};".format(ctxt=LPREFIX))
489 490 491 492
        dll_api.append("end save_context;")
        dll_api.append("")
        dll_api.append("{} is".format(restore_state_decl))
        dll_api.append("begin")
493
        dll_api.append("{ctxt} := {ctxt}_bk;".format(ctxt=LPREFIX))
494 495 496
        dll_api.append("end restore_context;")
        dll_api.append("")

497 498 499 500 501
        # Declare procedure Startup in .ads
        ads_template.append(u'procedure Startup;')
        ads_template.append(u'pragma Export(C, Startup, "{}_startup");'
                            .format(process_name))

502 503 504 505 506 507 508 509 510 511 512
        # 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))

513 514
        # Functions to get gobal variables (length and value)
        for var_name, (var_type, _) in process.variables.viewitems():
515
            # Getters for external applications to view local variables via dll
516
            process_level_decl.append("function l_{name}_value"
517 518 519 520 521
                                     " return access {sort} "
                                     "is ({prefix}.{name}'access) with Export,"
                                     " Convention => C,"
                                     ' Link_Name => "{name}_value";'
                                     .format(prefix=LPREFIX, name=var_name,
522 523 524 525 526
                                              sort=type_name(var_type)))
            # Setters for local variables
            setter_decl = "procedure dll_set_l_{name}(value: access {sort})"\
                          .format(name=var_name, sort=type_name(var_type))
            ads_template.append('{};'.format(setter_decl))
527
            ads_template.append('pragma Export(C, dll_set_l_{name},'
528
                                ' "_set_{name}");'.format(name=var_name))
529 530
            dll_api.append('{} is'.format(setter_decl))
            dll_api.append('begin')
531
            dll_api.append('{}.{} := value.all;'.format(LPREFIX, var_name))
532 533 534
            dll_api.append('end dll_set_l_{};'.format(var_name))
            dll_api.append('')

Maxime Perrotin's avatar
Maxime Perrotin committed
535 536 537 538 539 540
    # 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)
541 542 543 544
        if proc.exported:
            # Exported procedures must be declared in the .ads
            pi_header = procedure_header(proc)
            ads_template.append(u'{};'.format(pi_header))
545
            if not proc.external and not generic:
546 547 548 549
                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
550 551 552 553 554 555 556

    # 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)

557 558 559 560
    # Generate the code of the START procedures of state aggregations
    # XXX to be added to C generator
    taste_template.extend(aggreg_start_proc)

561 562 563
    # Add the code of the DLL interface
    taste_template.extend(dll_api)

Maxime Perrotin's avatar
Maxime Perrotin committed
564 565 566
    # 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]:
567
        signame = signal.get('name', u'START')
Maxime Perrotin's avatar
Maxime Perrotin committed
568
        if signame == u'START':
Maxime Perrotin's avatar
Maxime Perrotin committed
569
            continue
570
        pi_header = u'procedure {sig_name}'.format(sig_name=signame)
571
        param_name = signal.get('param_name') \
Maxime Perrotin's avatar
Maxime Perrotin committed
572
                                or u'{}_param'.format(signame)
Maxime Perrotin's avatar
Maxime Perrotin committed
573 574
        # Add (optional) PI parameter (only one is possible in TASTE PI)
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
575
            typename = type_name(signal['type'])
576
            pi_header += u'({pName}: access {sort})'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
577
                                        pName=param_name, sort=typename)
Maxime Perrotin's avatar
Maxime Perrotin committed
578 579

        # Add declaration of the provided interface in the .ads file
580
        ads_template.append(u'--  Provided interface "{}"'.format(signame))
Maxime Perrotin's avatar
Maxime Perrotin committed
581
        ads_template.append(pi_header + ';')
582 583 584
        if not generic:
            ads_template.append(u'pragma Export(C, {name}, "{proc}_{name}");'
                                 .format(name=signame, proc=process_name))
585 586 587 588 589

        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 []
590
            minicv.append(aadl_template(signame, params, 'RI'))
Maxime Perrotin's avatar
Maxime Perrotin committed
591 592 593 594

        pi_header += ' is'
        taste_template.append(pi_header)
        taste_template.append('begin')
595 596 597 598

        def execute_transition(state):
            ''' Generate the code that triggers the transition for the current
                state/input combination '''
599
            input_def = mapping[signame].get(state)
600
            # Check for nested states to call optional exit procedure
601
            state_tree = state.split(UNICODE_SEP)
Maxime Perrotin's avatar
Maxime Perrotin committed
602
            context = process
603 604 605 606 607 608
            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:
609
                    if current.lower() == comp.statename.lower():
610 611 612
                        if comp.exit_procedure:
                            exitlist.append(current)
                        context = comp
613
                        current = current + UNICODE_SEP
614 615 616 617
                        break
            for each in reversed(exitlist):
                if trans and all(each.startswith(trans_st)
                                 for trans_st in trans.possible_states):
618
                    taste_template.append(u'p{sep}{ref}{sep}exit;'
619
                                          .format(ref=each, sep=UNICODE_SEP))
620

Maxime Perrotin's avatar
Maxime Perrotin committed
621 622 623 624
            if input_def:
                for inp in input_def.parameters:
                    # Assign the (optional and unique) parameter
                    # to the corresponding process variable
625 626
                    taste_template.append(u'{ctxt}.{inp} := {tInp}.all;'
                                          .format(ctxt=LPREFIX,
627 628
                                                  inp=inp,
                                                  tInp=param_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
629 630
                # Execute the correponding transition
                if input_def.transition:
Maxime Perrotin's avatar
Maxime Perrotin committed
631
                    taste_template.append(u'runTransition({idx});'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
632 633
                        idx=input_def.transition_id))
                else:
Maxime Perrotin's avatar
Maxime Perrotin committed
634
                    taste_template.append('runTransition(CS_Only);')
Maxime Perrotin's avatar
Maxime Perrotin committed
635
            else:
636
                taste_template.append('runTransition(CS_Only);')
637

Maxime Perrotin's avatar
Maxime Perrotin committed
638 639
        if not instance:
            taste_template.append('case {}.state is'.format(LPREFIX))
640 641 642 643 644 645 646

        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
            '''
647
            if state.endswith(u'START'):
648
                return
649
            taste_template.append(u'when {state} =>'.format(state=state))
650
            input_def = mapping[signame].get(state)
651
            if state in aggregates.viewkeys():
652
                # State aggregation:
Maxime Perrotin's avatar
Maxime Perrotin committed
653 654
                # - find which substate manages this input
                # - add a swich case on the corresponding substate
655 656
                taste_template.append(u'-- this is a state aggregation')
                for sub in aggregates[state]:
657 658 659 660 661 662 663 664
                    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():
665
                            case_state(par)
666 667 668 669
                        taste_template.append('when others =>')
                        taste_template.append('null;')
                        taste_template.append('end case;')
                        break
670 671
                else:
                    # Input is not managed in the state aggregation
672 673 674
                    if input_def:
                        # check if it is managed one level above
                        execute_transition(state)
675
                    taste_template.append('null;')
Maxime Perrotin's avatar
Maxime Perrotin committed
676 677
            else:
                execute_transition(state)
678

Maxime Perrotin's avatar
Maxime Perrotin committed
679 680 681 682 683 684 685 686 687 688
        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 + ";")
689 690

        taste_template.append(u'end {};'.format(signame))
Maxime Perrotin's avatar
Maxime Perrotin committed
691 692 693 694 695
        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:
696

697 698
        param_name = signal.get('param_name') \
                                or u'{}_param'.format(signal['name'])
Maxime Perrotin's avatar
Maxime Perrotin committed
699
        # Add (optional) RI parameter
700 701 702
        # 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
703
        param_spec = '' if not simu else "(tm: chars_ptr)"
Maxime Perrotin's avatar
Maxime Perrotin committed
704
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
705
            typename = type_name(signal['type'])
706 707 708 709 710
            param_spec = u'({pName}: access {sort}{shared})' \
                         .format(pName=param_name,
                                 sort=typename,
                                 shared=u'; Size: Integer'
                                        if SHARED_LIB else '')
711 712 713 714
        if not generic:
            ads_template.append(u'--  {}equired interface "{}"'
                                .format("Paramless r" if not 'type' in signal
                                    else "R", signal['name']))
715 716 717 718
        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
719 720 721 722 723
            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);'
724
                                .format(sig=signal['name']))
Maxime Perrotin's avatar
Maxime Perrotin committed
725
            ads_template.append(u'pragma Export(C, Register_{sig},'
726 727
                                ' "register_{sig}");'
                                .format(sig=signal['name']))
728 729 730 731

            # Generate code for the mini-cv template
            params = [(param_name, type_name(signal['type'], use_prefix=False),
                      'IN')] if 'type' in signal else []
732
            minicv.append(aadl_template(signal['name'], params, 'PI'))
733

Maxime Perrotin's avatar
Maxime Perrotin committed
734 735
            taste_template.append(u'procedure Register_{sig}'
                                  u'(Callback:{sig}_T) is'
736
                                  .format(sig=signal['name']))
Maxime Perrotin's avatar
Maxime Perrotin committed
737 738 739 740 741
            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'')
742
        elif not generic:
Maxime Perrotin's avatar
Maxime Perrotin committed
743 744 745 746 747 748 749 750 751
            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
752 753

    # for the .ads file, generate the declaration of the external procedures
754
    for proc in (proc for proc in process.procedures if proc.external):
Maxime Perrotin's avatar
Maxime Perrotin committed
755 756 757
        ri_header = u'procedure RI{sep}{sig_name}'.format(
                                                     sep=UNICODE_SEP,
                                                     sig_name=proc.inputString)
Maxime Perrotin's avatar
Maxime Perrotin committed
758
        params = []
759 760 761 762
        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
763
        for param in proc.fpar:
Maxime Perrotin's avatar
Maxime Perrotin committed
764
            typename = type_name(param['type'])
765
            params.append(u'{par[name]}: access {sort}{shared}'
Maxime Perrotin's avatar
Maxime Perrotin committed
766
                          .format(par=param,
767 768 769 770
                                  sort=typename,
                                  shared=u"; {}_Size: Integer"
                                         .format(param['name'])
                                         if SHARED_LIB else ""))
Maxime Perrotin's avatar
Maxime Perrotin committed
771
        if params:
772 773
            params_spec = "({})".format("; ".join(params))
            ri_header += params_spec
774 775
        ads_template.append(u'--  Sync required interface "{}"'
                            .format(proc.inputString))
776 777 778 779
        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
780 781 782 783 784
            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);'
785
                                .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
786 787
            ads_template.append(u'pragma Export(C, Register_{sig},'
                                u' "register_{sig}");'
788
                                .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
789
            taste_template.append(u'procedure Register_{sig}'
790 791
                                  '(Callback:{sig}_T) is'
                                  .format(sig=proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
792 793 794 795 796 797
            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'')
798

799
        elif not generic:
800
            ads_template.append(ri_header + u';')
Maxime Perrotin's avatar
Maxime Perrotin committed
801 802 803 804 805
            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
806 807 808

    # for the .ads file, generate the declaration of timers set/reset functions
    for timer in process.timers:
809 810 811 812 813
        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'
814
                                 '(name: chars_ptr; duration: Asn1Int);'
815
                                .format(timer))
Maxime Perrotin's avatar
Maxime Perrotin committed
816 817
            ads_template.append(u'type RESET_{}_T is access procedure'
                                '(name: chars_ptr);'.format(timer))
818
            for each in ('', 'RE'):
819 820
                ads_template.append(u'pragma Convention(Convention => C,'
                                    u' Entity => {re}SET_{t}_T);'
821
                                    .format(re=each, t=timer))
822
                ads_template.append(u'{re}SET_{t} : {re}SET_{t}_T;'
823
                                    .format(re=each, t=timer))
824 825
                ads_template.append(u'procedure Register_{re}SET_{t}'
                                    u'(Callback: {re}SET_{t}_T);'
826
                                    .format(re=each, t=timer))
827 828
                ads_template.append(u'pragma Export(C, Register_{re}SET_{t},'
                                    u' "register_{re}SET_{t}");'
829 830 831
                                    .format(re=each, t=timer))
            # Code for the SET/RESET timer callback registration
            for each in ('', 'RE'):
832 833
                taste_template.append(u'procedure Register_{re}SET_{t}'
                                      u'(Callback:{re}SET_{t}_T) is'
834
                                      .format(re=each, t=timer))
835 836
                taste_template.append(u'begin')
                taste_template.append(u'{re}SET_{t} := Callback;'
837
                                      .format(re=each, t=timer))
838
                taste_template.append(u'end Register_{re}SET_{t};'
839 840 841 842 843
                                      .format(re=each, t=timer))
                taste_template.append('')

        else:
            ads_template.append(u'procedure SET_{}(val: access asn1SccT_UInt32);'
Maxime Perrotin's avatar
Maxime Perrotin committed
844
                .format(timer))
845 846 847 848
            if not generic:
                ads_template.append(
                    u'pragma import(C, SET_{timer}, "{proc}_RI_set_{timer}");'
                    .format(timer=timer, proc=process_name))
849
            ads_template.append(u'procedure RESET_{};'.format(timer))
850 851 852 853
            if not generic:
                ads_template.append(
                 u'pragma import(C, RESET_{timer}, "{proc}_RI_reset_{timer}");'
                 .format(timer=timer, proc=process_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
854

855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871
    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";")

872 873 874 875 876 877 878 879 880
    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'')

881 882 883 884 885 886
    # 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;')

887 888
    # Transform inner labels to floating labels
    Helper.inner_labels_to_floating(process)
Maxime Perrotin's avatar
Maxime Perrotin committed
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904

    # 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)

905
    # Generate the code of the runTransition procedure, if needed
Maxime Perrotin's avatar
Maxime Perrotin committed
906
    if process.transitions and not instance:
907 908
        taste_template.append('procedure runTransition(Id: Integer) is')
        taste_template.append('trId : Integer := Id;')
909 910
        if process.cs_mapping:
            taste_template.append(
911
                              'msgPending : aliased Asn1Boolean := True;')
Maxime Perrotin's avatar
Maxime Perrotin committed
912

913 914 915
        # Declare the local variables needed by the transitions in the template
        taste_template.extend(set(local_decl_transitions))
        taste_template.append('begin')
916

917 918 919
        # 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
920

921 922
        # Generate the switch-case on the transition id
        taste_template.append('case trId is')
Maxime Perrotin's avatar
Maxime Perrotin committed
923

924 925 926 927 928 929 930
        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
931

932 933 934 935
        taste_template.append('when CS_Only =>')
        taste_template.append('trId := -1;')
        taste_template.append('goto next_transition;')

936 937 938 939 940 941 942 943
        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
944

945 946
        # Add the code for the floating labels
        taste_template.extend(code_labels)
Maxime Perrotin's avatar
Maxime Perrotin committed
947

948
        taste_template.append('<<next_transition>>')
949 950 951 952 953

        # 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
954
        if process.cs_mapping and not simu:
955
            taste_template.append('--  Process continuous signals')
956
            taste_template.append('if {}.initDone then'.format(LPREFIX))
957 958
            taste_template.append("Check_Queue(msgPending'access);")
            taste_template.append('end if;')
959 960
            ads_template.append(
                    u'procedure Check_Queue(res: access Asn1Boolean);')
961 962 963 964
            if not generic:
                ads_template.append(
                    u'pragma import(C, Check_Queue, "{proc}_check_queue");'
                    .format(proc=process_name))
965 966 967 968 969 970 971 972 973 974 975 976 977 978
        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");')
979 980 981
        else:
            taste_template.append('null;')

982
        # Process the continuous signals in state aggregations first
983
        done = []
984 985
        sep = 'if '
        last = ''
986 987
        # flag indicating there are CS in nested states but not at root
        need_final_endif = False
988 989 990 991 992
        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():
993
                    need_final_endif = True
994 995
                    taste_template.append(u'{first}if not msgPending and '
                            u'trId = -1 and '
996
                            u'{ctxt}.state = {s1} and '
997
                            u'{ctxt}.{s2}{unisep}state = {s3} then'
998
                            .format(ctxt=LPREFIX, s1=agg_name,
999
                                s2=each.statename, unisep=UNICODE_SEP,
1000
                                s3=statename, first='els' if done else ''))
1001 1002 1003 1004 1005 1006 1007 1008 1009
                    # 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(provided_clause.priority))
1010 1011 1012
                        trId = process.transitions.index\
                                            (provided_clause.transition)
                        code, loc = generate(provided_clause.trigger,
1013 1014 1015
                                             branch_to=trId,
                                             sep=sep, last=last)
                        sep='elsif '
1016
                        taste_template.extend(code)
1017
                    done.append(statename)
1018
                    taste_template.append(u'end if;')  # inner if
1019
                    sep = 'if '
1020 1021
                    break
        for statename in process.cs_mapping.viewkeys() - done:
1022
            need_final_endif = False
1023
            cs_item = process.cs_mapping[statename]
1024 1025
            taste_template.append(u'{first}if not msgPending and '
                    u'trId = -1 and {}.state = {} then'
1026
                    .format(LPREFIX, statename, first='els' if done else ''))
1027 1028 1029 1030 1031 1032 1033 1034 1035
            # 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(provided_clause.priority))
Maxime Perrotin's avatar
G