AdaGenerator.py 90.7 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
Maxime Perrotin's avatar
Maxime Perrotin committed
74 75 76
from singledispatch import singledispatch

import ogAST
77
import Helper
Maxime Perrotin's avatar
Maxime Perrotin committed
78 79 80 81 82 83 84 85 86 87 88 89 90

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 = []

91 92 93
# Specify that the target is a shared library
SHARED_LIB = False

94
UNICODE_SEP = u'\u00dc'
95
LPREFIX = u'ctxt'
Maxime Perrotin's avatar
Maxime Perrotin committed
96 97

@singledispatch
98
def generate(*args, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
99 100
    ''' Generate the code for an item of the AST '''
    raise TypeError('[AdaGenerator] Unsupported AST construct')
101
    return [], []
Maxime Perrotin's avatar
Maxime Perrotin committed
102 103


Maxime Perrotin's avatar
Maxime Perrotin committed
104
# Processing of the AST
Maxime Perrotin's avatar
Maxime Perrotin committed
105
@generate.register(ogAST.Process)
106
def _process(process, simu=False, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
107 108 109 110 111 112 113 114
    ''' Generate the code for a complete process (AST Top level) '''
    process_name = process.processName
    global TYPES
    TYPES = process.dataview
    del OUT_SIGNALS[:]
    del PROCEDURES[:]
    OUT_SIGNALS.extend(process.output_signals)
    PROCEDURES.extend(process.procedures)
115 116 117
    global SHARED_LIB
    if simu:
        SHARED_LIB = True
Maxime Perrotin's avatar
Maxime Perrotin committed
118

119 120 121 122 123 124 125 126 127 128 129
    # 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 = []
130 131 132 133 134
        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 ''
135 136 137 138 139 140
        # 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} '
141 142 143
                          '{{encoding=>Native;}};'.format(pname=param_name,
                                                          sort=sort,
                                                          io=direction))
144 145 146 147 148 149 150 151 152
        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)

153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174
    # bash script to simulate the system (TEMPORARY)
    simu_script = '''#!/bin/bash -e
opengeode {pr}.pr --shared
asn1.exe -Ada dataview-uniq.asn -typePrefix asn1Scc -equal
asn1.exe -c dataview-uniq.asn -typePrefix asn1Scc -equal
gnatmake -gnat2012 -c *.adb
gnatbind -n -Llib{pr} {pr}
gnatmake -c -gnat2012 b~{pr}.adb
gcc -shared -fPIC -o lib{pr}.so b~{pr}.o {pr}.o taste_dataview.o adaasn1rtl.o -lgnat
rm -rf simu
mkdir -p simu
asn2aadlPlus dataview-uniq.asn simu/DataView.aadl
cp lib{pr}.so dataview-uniq.asn *.pr simu
mv *.aadl simu
cd simu
aadl2glueC DataView.aadl {pr}_interface.aadl
asn2dataModel -toPython dataview-uniq.asn
make -f Makefile.python
echo "errCodes=$(taste-asn1-errCodes ./dataview-uniq.h)" >>datamodel.py
LD_LIBRARY_PATH=. taste-gui -l
'''.format(pr=process_name)

175

Maxime Perrotin's avatar
Maxime Perrotin committed
176 177
    LOG.info('Generating Ada code for process ' + str(process_name))

178
    # In case model has nested states, flatten everything
179
    Helper.flatten(process, sep=UNICODE_SEP)
180

Maxime Perrotin's avatar
Maxime Perrotin committed
181 182 183 184
    # 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
185 186 187
    VARIABLES.update(process.variables)

    process_level_decl = []
188 189 190 191 192 193 194 195 196 197 198 199 200 201

    # Establish the list of states (excluding START states)
    statelist = ', '.join(name for name in process.mapping.iterkeys()
                             if not name.endswith(u'START')) or 'No_State'
    if statelist:
        states_decl = u'type States is ({});'.format(statelist)
        process_level_decl.append(states_decl)

    # Generate the code to declare process-level context
    process_level_decl.extend(['type {}_Ty is'.format(LPREFIX), 'record'])

    if statelist:
        process_level_decl.append('state : States;')

Maxime Perrotin's avatar
Maxime Perrotin committed
202 203 204 205
    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
206
            dst, dstr, dlocal = expression(def_value)
207 208 209
            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
210 211
            assert not dst and not dlocal, 'DCL: Expecting a ground expression'
        process_level_decl.append(
212 213
                        u'{n} : aliased {sort}{default};'
                        .format(n=var_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
214 215
                                sort=type_name(var_type),
                                default=u' := ' + dstr if def_value else u''))
Maxime Perrotin's avatar
Maxime Perrotin committed
216

217 218 219
    process_level_decl.append('end record;'.format(LPREFIX))
    process_level_decl.append('{ctxt}: {ctxt}_Ty;'.format(ctxt=LPREFIX))

Maxime Perrotin's avatar
Maxime Perrotin committed
220

221
    for name, val in process.mapping.viewitems():
Maxime Perrotin's avatar
Maxime Perrotin committed
222 223
        if name.endswith(u'START') and name != u'START':
            process_level_decl.append(u'{name} : constant := {val};'
224 225
                                      .format(name=name, val=str(val)))

226 227 228
    # Add the declaration of the runTransition procedure, if needed
    if process.transitions:
        process_level_decl.append('procedure runTransition(Id: Integer);')
Maxime Perrotin's avatar
Maxime Perrotin committed
229

230
    # Generate the code of the start transition (if process not empty)
231
    start_transition = ['begin',
232
                        'runTransition(0);'] if process.transitions else []
233

Maxime Perrotin's avatar
Maxime Perrotin committed
234 235 236 237 238
    # Generate the TASTE template
    try:
        asn1_modules = '\n'.join(['with {dv};\nuse {dv};'.format(
            dv=dv.replace('-', '_'))
            for dv in process.asn1Modules])
239
        asn1_modules += '\nwith adaasn1rtl;\nuse adaasn1rtl;'
Maxime Perrotin's avatar
Maxime Perrotin committed
240 241 242 243 244 245 246 247
    except TypeError:
        asn1_modules = '--  No ASN.1 data types are used in this model'
    taste_template = ['''\
-- This file was generated automatically: DO NOT MODIFY IT !

with System.IO;
use System.IO;

248
with Ada.Unchecked_Conversion;
249
with Ada.Numerics.Generic_Elementary_Functions;
250

Maxime Perrotin's avatar
Maxime Perrotin committed
251 252 253 254
{dataview}

with Interfaces;
use Interfaces;
255
{C}
Maxime Perrotin's avatar
Maxime Perrotin committed
256
package body {process_name} is'''.format(process_name=process_name,
257 258 259 260
                                         dataview=asn1_modules,
                                         C='with Interfaces.C.Strings;\n'
                                           'use Interfaces.C.Strings;'
                                            if simu else '')]
Maxime Perrotin's avatar
Maxime Perrotin committed
261 262 263 264 265 266

    # Generate the source file (.ads) header
    ads_template = ['''\
-- This file was generated automatically: DO NOT MODIFY IT !

{dataview}
Maxime Perrotin's avatar
Maxime Perrotin committed
267
{C}
Maxime Perrotin's avatar
Maxime Perrotin committed
268 269

package {process_name} is'''.format(process_name=process_name,
Maxime Perrotin's avatar
Maxime Perrotin committed
270 271 272 273
                                    dataview=asn1_modules,
                                    C='with Interfaces.C.Strings;\n'
                                      'use Interfaces.C.Strings;'
                                        if simu else '')]
Maxime Perrotin's avatar
Maxime Perrotin committed
274

Maxime Perrotin's avatar
Maxime Perrotin committed
275
    dll_api = []
276 277
    if simu:
        ads_template.append('--  DLL Interface')
278
        dll_api.append('-- DLL Interface to remotely change internal data')
279 280
        # Add function allowing to trace current state as a string
        process_level_decl.append("function get_state return chars_ptr "
281 282 283 284
                                  "is (New_String(states'Image({ctxt}.state)))"
                                  " with Export, Convention => C, "
                                  'Link_Name => "{name}_state";'
                                  .format(name=process_name, ctxt=LPREFIX))
285 286
        set_state_decl = "procedure set_state(new_state: chars_ptr)"
        ads_template.append("{};".format(set_state_decl))
287
        ads_template.append('pragma export(C, set_state, "_set_state");')
288 289
        dll_api.append("{} is".format(set_state_decl))
        dll_api.append("begin")
290 291
        dll_api.append("{}.state := States'Value(Value(new_state));"
                       .format(LPREFIX))
292 293 294
        dll_api.append("end set_state;")
        dll_api.append("")

295 296 297 298
        # Functions to get gobal variables (length and value)
        for var_name, (var_type, _) in process.variables.viewitems():
            # Getters for local variables
            process_level_decl.append("function l_{name}_size return integer "
299 300 301 302
                                     "is ({prefix}.{name}'Size/8) with Export,"
                                     " Convention => C,"
                                     ' Link_Name => "{name}_size";'
                                     .format(prefix=LPREFIX, name=var_name))
303
            process_level_decl.append("function l_{name}_value"
304 305 306 307 308
                                     " return access {sort} "
                                     "is ({prefix}.{name}'access) with Export,"
                                     " Convention => C,"
                                     ' Link_Name => "{name}_value";'
                                     .format(prefix=LPREFIX, name=var_name,
309 310 311 312 313
                                              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))
314 315
            ads_template.append('pragma export(C, dll_set_l_{name},'
                                ' "_set_{name}");'.format(name=var_name))
316 317
            dll_api.append('{} is'.format(setter_decl))
            dll_api.append('begin')
318
            dll_api.append('{}.{} := value.all;'.format(LPREFIX, var_name))
319 320 321 322
            dll_api.append('end dll_set_l_{};'.format(var_name))
            dll_api.append('')


Maxime Perrotin's avatar
Maxime Perrotin committed
323 324 325 326 327 328 329 330 331 332 333 334 335
    # 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)

    # 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)

336 337 338
    # Add the code of the DLL interface
    taste_template.extend(dll_api)

Maxime Perrotin's avatar
Maxime Perrotin committed
339 340 341
    # 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]:
Maxime Perrotin's avatar
Maxime Perrotin committed
342
        if signal.get('name', u'START') == u'START':
Maxime Perrotin's avatar
Maxime Perrotin committed
343
            continue
344 345 346
        pi_header = u'procedure {sig_name}'.format(sig_name=signal['name'])
        param_name = signal.get('param_name') \
                                or u'{}_param'.format(signal['name'])
Maxime Perrotin's avatar
Maxime Perrotin committed
347 348
        # Add (optional) PI parameter (only one is possible in TASTE PI)
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
349
            typename = type_name(signal['type'])
350
            pi_header += u'({pName}: access {sort})'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
351
                                        pName=param_name, sort=typename)
Maxime Perrotin's avatar
Maxime Perrotin committed
352 353

        # Add declaration of the provided interface in the .ads file
354
        ads_template.append(u'--  Provided interface "' + signal['name'] + '"')
Maxime Perrotin's avatar
Maxime Perrotin committed
355
        ads_template.append(pi_header + ';')
356 357 358 359 360 361 362
        ads_template.append(u'pragma export(C, {name}, "{proc}_{name}");'
                             .format(name=signal['name'], proc=process_name))

        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 []
363
            minicv.append(aadl_template(signal['name'], params, 'RI'))
Maxime Perrotin's avatar
Maxime Perrotin committed
364 365 366 367

        pi_header += ' is'
        taste_template.append(pi_header)
        taste_template.append('begin')
368
        taste_template.append('case {ctxt}.state is'.format(ctxt=LPREFIX))
Maxime Perrotin's avatar
Maxime Perrotin committed
369
        for state in process.mapping.viewkeys():
Maxime Perrotin's avatar
Maxime Perrotin committed
370
            if state.endswith(u'START'):
Maxime Perrotin's avatar
Maxime Perrotin committed
371
                continue
Maxime Perrotin's avatar
Maxime Perrotin committed
372
            taste_template.append(u'when {state} =>'.format(state=state))
Maxime Perrotin's avatar
Maxime Perrotin committed
373
            input_def = mapping[signal['name']].get(state)
374
            # Check for nested states to call optional exit procedure
375
            sep = UNICODE_SEP
376
            state_tree = state.split(sep)
Maxime Perrotin's avatar
Maxime Perrotin committed
377
            context = process
378 379 380 381 382 383
            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:
384
                    if current.lower() == comp.statename.lower():
385 386 387 388 389 390 391 392
                        if comp.exit_procedure:
                            exitlist.append(current)
                        context = comp
                        current = current + sep
                        break
            for each in reversed(exitlist):
                if trans and all(each.startswith(trans_st)
                                 for trans_st in trans.possible_states):
393 394
                    taste_template.append(u'p{sep}{ref}{sep}exit;'
                                          .format(ref=each, sep=sep))
395

Maxime Perrotin's avatar
Maxime Perrotin committed
396 397 398 399
            if input_def:
                for inp in input_def.parameters:
                    # Assign the (optional and unique) parameter
                    # to the corresponding process variable
400 401
                    taste_template.append(u'{ctxt}.{inp} := {tInp}.all;'
                                          .format(ctxt=LPREFIX,
402 403
                                                  inp=inp,
                                                  tInp=param_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
404 405
                # Execute the correponding transition
                if input_def.transition:
Maxime Perrotin's avatar
Maxime Perrotin committed
406
                    taste_template.append(u'runTransition({idx});'.format(
Maxime Perrotin's avatar
Maxime Perrotin committed
407 408 409 410 411 412 413 414
                        idx=input_def.transition_id))
                else:
                    taste_template.append('null;')
            else:
                taste_template.append('null;')
        taste_template.append('when others =>')
        taste_template.append('null;')
        taste_template.append('end case;')
415
        taste_template.append(u'end {};'.format(signal['name']))
Maxime Perrotin's avatar
Maxime Perrotin committed
416 417 418 419 420
        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:
421

422 423
        param_name = signal.get('param_name') \
                                or u'{}_param'.format(signal['name'])
Maxime Perrotin's avatar
Maxime Perrotin committed
424
        # Add (optional) RI parameter
Maxime Perrotin's avatar
Maxime Perrotin committed
425
        param_spec = '' if not simu else "(tm: chars_ptr)"
Maxime Perrotin's avatar
Maxime Perrotin committed
426
        if 'type' in signal:
Maxime Perrotin's avatar
Maxime Perrotin committed
427
            typename = type_name(signal['type'])
428 429 430 431 432
            param_spec = u'({pName}: access {sort}{shared})' \
                         .format(pName=param_name,
                                 sort=typename,
                                 shared=u'; Size: Integer'
                                        if SHARED_LIB else '')
Maxime Perrotin's avatar
Maxime Perrotin committed
433
        ads_template.append(u'--  Required interface "' + signal['name'] + '"')
434 435 436 437 438 439
        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))
            ads_template.append('pragma Convention(Convention => C,'
                                ' Entity => {}_T);'.format(signal['name']))
440
            ads_template.append('{sig} : {sig}_T;'
441
                                .format(sig=signal['name']))
442 443 444 445 446
            ads_template.append('procedure Register_{sig}(Callback: {sig}_T);'
                                .format(sig=signal['name']))
            ads_template.append('pragma Export(C, Register_{sig},'
                                ' "register_{sig}");'
                                .format(sig=signal['name']))
447 448 449 450

            # Generate code for the mini-cv template
            params = [(param_name, type_name(signal['type'], use_prefix=False),
                      'IN')] if 'type' in signal else []
451
            minicv.append(aadl_template(signal['name'], params, 'PI'))
452

453 454 455 456 457 458 459
            taste_template.append('procedure Register_{sig}'
                                  '(Callback:{sig}_T) is'
                                  .format(sig=signal['name']))
            taste_template.append('begin')
            taste_template.append('{} := Callback;'.format(signal['name']))
            taste_template.append('end Register_{};'.format(signal['name']))
            taste_template.append('')
460 461 462 463 464
        else:
            ads_template.append(u'procedure {}{};'
                                .format(signal['name'], param_spec))
            ads_template.append(u'pragma import(C, {sig}, "{proc}_RI_{sig}");'
                                .format(sig=signal['name'], proc=process_name))
Maxime Perrotin's avatar
Maxime Perrotin committed
465 466

    # for the .ads file, generate the declaration of the external procedures
467 468
    for proc in (proc for proc in process.procedures if proc.external):
        ri_header = u'procedure {sig_name}'.format(sig_name=proc.inputString)
Maxime Perrotin's avatar
Maxime Perrotin committed
469 470
        params = []
        for param in proc.fpar:
Maxime Perrotin's avatar
Maxime Perrotin committed
471 472 473 474
            typename = type_name(param['type'])
            params.append(u'{par[name]}: access {sort}'
                          .format(par=param,
                                  sort=typename))
Maxime Perrotin's avatar
Maxime Perrotin committed
475
        if params:
Maxime Perrotin's avatar
Maxime Perrotin committed
476
            ri_header += u'(' + u';'.join(params) + ')'
Maxime Perrotin's avatar
Maxime Perrotin committed
477
        ads_template.append(
dbarbera's avatar
dbarbera committed
478
                        u'--  Sync required interface "' + proc.inputString)
Maxime Perrotin's avatar
Maxime Perrotin committed
479 480
        ads_template.append(ri_header + u';')
        ads_template.append(u'pragma import(C, {sig}, "{proc}_RI_{sig}");'
Maxime Perrotin's avatar
Maxime Perrotin committed
481 482 483 484
                .format(sig=proc.inputString, proc=process_name))

    # for the .ads file, generate the declaration of timers set/reset functions
    for timer in process.timers:
485 486 487 488 489
        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'
Maxime Perrotin's avatar
Maxime Perrotin committed
490
                                 '(name: chars_ptr; duration: Integer);'
491
                                .format(timer))
Maxime Perrotin's avatar
Maxime Perrotin committed
492 493
            ads_template.append(u'type RESET_{}_T is access procedure'
                                '(name: chars_ptr);'.format(timer))
494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
            for each in ('', 'RE'):
                ads_template.append('pragma Convention(Convention => C,'
                                    ' Entity => {re}SET_{t}_T);'
                                    .format(re=each, t=timer))
                ads_template.append('{re}SET_{t} : {re}SET_{t}_T;'
                                    .format(re=each, t=timer))
                ads_template.append('procedure Register_{re}SET_{t}'
                                    '(Callback: {re}SET_{t}_T);'
                                    .format(re=each, t=timer))
                ads_template.append('pragma Export(C, Register_{re}SET_{t},'
                                    ' "register_{re}SET_{t}");'
                                    .format(re=each, t=timer))
            # Code for the SET/RESET timer callback registration
            for each in ('', 'RE'):
                taste_template.append('procedure Register_{re}SET_{t}'
                                      '(Callback:{re}SET_{t}_T) is'
                                      .format(re=each, t=timer))
                taste_template.append('begin')
                taste_template.append('{re}SET_{t} := Callback;'
                                      .format(re=each, t=timer))
                taste_template.append('end Register_{re}SET_{t};'
                                      .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
520
                .format(timer))
521
            ads_template.append(
Maxime Perrotin's avatar
Maxime Perrotin committed
522
                u'pragma import(C, SET_{timer}, "{proc}_RI_set_{timer}");'
Maxime Perrotin's avatar
Maxime Perrotin committed
523
                .format(timer=timer, proc=process_name))
524 525
            ads_template.append(u'procedure RESET_{};'.format(timer))
            ads_template.append(
Maxime Perrotin's avatar
Maxime Perrotin committed
526
                u'pragma import(C, RESET_{timer}, "{proc}_RI_reset_{timer}");'
Maxime Perrotin's avatar
Maxime Perrotin committed
527 528
                .format(timer=timer, proc=process_name))

529 530 531 532 533 534
    # 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;')

535 536
    # Transform inner labels to floating labels
    Helper.inner_labels_to_floating(process)
Maxime Perrotin's avatar
Maxime Perrotin committed
537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552

    # 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)

553 554 555 556
    # Generate the code of the runTransition procedure, if needed
    if process.transitions:
        taste_template.append('procedure runTransition(Id: Integer) is')
        taste_template.append('trId : Integer := Id;')
Maxime Perrotin's avatar
Maxime Perrotin committed
557

558 559 560
        # Declare the local variables needed by the transitions in the template
        taste_template.extend(set(local_decl_transitions))
        taste_template.append('begin')
561

562 563 564
        # 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
565

566 567
        # Generate the switch-case on the transition id
        taste_template.append('case trId is')
Maxime Perrotin's avatar
Maxime Perrotin committed
568

569 570 571 572 573 574 575
        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
576

577 578 579 580 581 582 583 584
        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
585

586 587
        # Add the code for the floating labels
        taste_template.extend(code_labels)
Maxime Perrotin's avatar
Maxime Perrotin committed
588

589 590 591 592 593 594
        #if code_labels:
        taste_template.append('<<next_transition>>')
        taste_template.append('null;')
        taste_template.append('end loop;')
        taste_template.append('end runTransition;')
        taste_template.append('\n')
Maxime Perrotin's avatar
Maxime Perrotin committed
595

596
    # Add code of the package elaboration
Maxime Perrotin's avatar
Maxime Perrotin committed
597 598 599 600 601 602 603 604
    taste_template.extend(start_transition)
    taste_template.append('end {process_name};'
            .format(process_name=process_name))

    ads_template.append('end {process_name};'
            .format(process_name=process_name))

    with open(process_name + '.adb', 'w') as ada_file:
Maxime Perrotin's avatar
Maxime Perrotin committed
605 606
        ada_file.write(
                u'\n'.join(format_ada_code(taste_template)).encode('latin1'))
Maxime Perrotin's avatar
Maxime Perrotin committed
607 608

    with open(process_name + '.ads', 'w') as ada_file:
Maxime Perrotin's avatar
Maxime Perrotin committed
609 610
        ada_file.write(
                u'\n'.join(format_ada_code(ads_template)).encode('latin1'))
Maxime Perrotin's avatar
Maxime Perrotin committed
611

612 613 614 615
    if simu:
        with open(u'{}_interface.aadl'.format(process_name), 'w') as aadl:
            aadl.write(u'\n'.join(minicv).encode('latin1'))

616 617 618 619
    if not simu:
        with open('{}_simu.sh'.format(process_name), 'w') as bash_script:
            bash_script.write(simu_script)

Maxime Perrotin's avatar
Maxime Perrotin committed
620 621 622 623 624 625 626 627

def write_statement(param, newline):
    ''' Generate the code for the special "write" operator '''
    code = []
    string = ''
    local = []
    basic_type = find_basic_type(param.exprType) or {}
    type_kind = basic_type.kind
628 629 630 631 632 633 634 635 636
    if isinstance(param, ogAST.ExprAppend):
        # Append: call Put_Line separately for each side of the expression
        st1, _, lcl1= write_statement(param.left, newline = False)
        st2, _, lcl2 = write_statement(param.right, newline = False)
        code.extend(st1)
        code.extend(st2)
        local.extend(lcl1)
        local.extend(lcl2)
    elif type_kind.endswith('StringType'):
Maxime Perrotin's avatar
Maxime Perrotin committed
637 638
        if isinstance(param, ogAST.PrimStringLiteral):
            # Raw string
639 640
            code.append(u'Put("{}");'
                        .format(param.value[1:-1].replace('"', "'")))
Maxime Perrotin's avatar
Maxime Perrotin committed
641
        else:
Maxime Perrotin's avatar
Maxime Perrotin committed
642
            code, string, local = expression(param)
643 644
            if type_kind == 'OctetStringType':
                # Octet string -> convert to Ada string
645
                sep = UNICODE_SEP
646
                last_it = u""
647 648
                if isinstance(param, ogAST.PrimSubstring):
                    range_str = u"{}'Range".format(string)
649
                    iterator = u"i - {}'First + 1".format(string)
650 651 652
                elif basic_type.Min == basic_type.Max:
                    range_str = u"{}.Data'Range".format(string)
                    string += u".Data"
653
                    iterator = u"i"
654 655 656
                else:
                    range_str = u"1 .. {}.Length".format(string)
                    string += u".Data"
657 658
                    iterator = u"i"
                    last_it = u"({})".format(range_str)
659
                code.extend([u"for i in {} loop".format(range_str),
660 661
                             u"Put(Character'Val({st}(i)));"
                             .format(st=string, sep=sep, it=iterator),
662
                             u"end loop;"])
663 664
            else:
                code.append("Put({});".format(string))
Maxime Perrotin's avatar
Maxime Perrotin committed
665 666
    elif type_kind in ('IntegerType', 'RealType',
                       'BooleanType', 'Integer32Type'):
Maxime Perrotin's avatar
Maxime Perrotin committed
667
        code, string, local = expression(param)
dbarbera's avatar
dbarbera committed
668
        if type_kind in ('IntegerType', 'Integer32Type'):
669
            cast = "Asn1Int"
Maxime Perrotin's avatar
Maxime Perrotin committed
670 671 672 673
        elif type_kind == 'RealType':
            cast = 'Long_Float'
        elif type_kind == 'BooleanType':
            cast = 'Boolean'
674
        code.append(u"Put({cast}'Image({s}));".format(cast=cast, s=string))
Maxime Perrotin's avatar
Maxime Perrotin committed
675
    else:
676
        error = (u'Unsupported parameter in write call ' +
Maxime Perrotin's avatar
Maxime Perrotin committed
677 678 679
                param.inputString)
        LOG.error(error)
        raise TypeError(error)
680 681
    if newline:
        code.append(u"New_Line;")
Maxime Perrotin's avatar
Maxime Perrotin committed
682 683 684 685 686
    return code, string, local


@generate.register(ogAST.Output)
@generate.register(ogAST.ProcedureCall)
687
def _call_external_function(output, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715
    ''' Generate the code of a set of output or procedure call statement '''
    code = []
    local_decl = []

    # Add the traceability information
    code.extend(traceability(output))

    for out in output.output:
        signal_name = out['outputName']

        if signal_name.lower() in ('write', 'writeln'):
            # special built-in SDL procedure for printing strings
            # supports printing of native types (int, real, bool)
            # but not yet complex ASN.1 structures (sequence/seqof/choice)
            for param in out['params'][:-1]:
                stmts, _, local = write_statement(param, newline=False)
                code.extend(stmts)
                local_decl.extend(local)
            for param in out['params'][-1:]:
                # Last parameter - add newline if necessary
                stmts, _, local = write_statement(param, newline=True if
                        signal_name.lower() == 'writeln' else False)
                code.extend(stmts)
                local_decl.extend(local)
            continue
        elif signal_name.lower() == 'reset_timer':
            # built-in operator for resetting timers. param = timer name
            param, = out['params']
Maxime Perrotin's avatar
Maxime Perrotin committed
716
            p_code, p_id, p_local = expression(param)
Maxime Perrotin's avatar
Maxime Perrotin committed
717 718
            code.extend(p_code)
            local_decl.extend(p_local)
Maxime Perrotin's avatar
Maxime Perrotin committed
719 720 721 722
            if not SHARED_LIB:
                code.append('RESET_{};'.format(p_id))
            else:
                code.append('RESET_{t}(New_String("{t}"));'.format(t=p_id))
Maxime Perrotin's avatar
Maxime Perrotin committed
723 724 725 726
            continue
        elif signal_name.lower() == 'set_timer':
            # built-in operator for setting a timer: SET(1000, timer_name)
            timer_value, timer_id = out['params']
Maxime Perrotin's avatar
Maxime Perrotin committed
727 728
            t_code, t_val, t_local = expression(timer_value)
            p_code, p_id, p_local = expression(timer_id)
Maxime Perrotin's avatar
Maxime Perrotin committed
729 730 731 732
            code.extend(t_code)
            code.extend(p_code)
            local_decl.extend(t_local)
            local_decl.extend(p_local)
Maxime Perrotin's avatar
Maxime Perrotin committed
733 734 735 736 737 738 739 740 741 742 743
            if not SHARED_LIB:
                # Use a temporary variable to store the timer value
                tmp_id = 'tmp' + str(out['tmpVars'][0])
                local_decl.append('{} : aliased asn1SccT_UInt32;'
                                  .format(tmp_id))
                code.append('{tmp} := {val};'.format(tmp=tmp_id, val=t_val))
                code.append("SET_{timer}({value}'access);"
                            .format(timer=p_id, value=tmp_id))
            else:
                code.append('SET_{t}(New_String("{t}"), {val});'
                            .format(t=p_id, val=t_val))
Maxime Perrotin's avatar
Maxime Perrotin committed
744 745
            continue
        proc, out_sig = None, None
746
        is_out_sig = False
Maxime Perrotin's avatar
Maxime Perrotin committed
747 748 749
        try:
            out_sig, = [sig for sig in OUT_SIGNALS
                        if sig['name'].lower() == signal_name.lower()]
750
            is_out_sig = True if SHARED_LIB else False
Maxime Perrotin's avatar
Maxime Perrotin committed
751
        except ValueError:
752
            # Not an output, try if it is an external or inner procedure
Maxime Perrotin's avatar
Maxime Perrotin committed
753
            try:
754
                proc, = [sig for sig in PROCEDURES
Maxime Perrotin's avatar
Maxime Perrotin committed
755
                            if sig.inputString.lower() == signal_name.lower()]
756 757
                if proc.external:
                    out_sig = proc
Maxime Perrotin's avatar
Maxime Perrotin committed
758
            except ValueError:
759
                # Not there? Impossible, the parser would have barked
760
                raise ValueError(u'Probably a bug - please report')
Maxime Perrotin's avatar
Maxime Perrotin committed
761 762 763 764 765 766 767 768 769 770 771 772
        if out_sig:
            list_of_params = []
            for idx, param in enumerate(out.get('params') or []):
                param_direction = 'in'
                try:
                    # If it is an output, there is a single parameter
                    param_type = out_sig['type']
                except TypeError:
                    # Else if it is a procedure, get the type
                    param_type = out_sig.fpar[idx]['type']
                    param_direction = out_sig.fpar[idx]['direction']

Maxime Perrotin's avatar
Maxime Perrotin committed
773
                typename = type_name(param_type)
Maxime Perrotin's avatar
Maxime Perrotin committed
774
                p_code, p_id, p_local = expression(param)
Maxime Perrotin's avatar
Maxime Perrotin committed
775 776 777
                code.extend(p_code)
                local_decl.extend(p_local)
                # Create a temporary variable for input parameters only
Maxime Perrotin's avatar
Maxime Perrotin committed
778 779
                # (If needed, i.e. if argument is not a local variable)
                if param_direction == 'in' \
780
                        and (not (isinstance(param, ogAST.PrimVariable)
781
                        and p_id.startswith(LPREFIX)) # NO FIXME WITH CTXT
782
                        or isinstance(param, ogAST.PrimFPAR)):
783 784 785 786
                    tmp_id = 'tmp{}'.format(out['tmpVars'][idx])
                    local_decl.append('{tmp} : aliased {sort};'
                                      .format(tmp=tmp_id,
                                              sort=typename))
787 788 789 790
                    if isinstance(param,
                              (ogAST.PrimSequenceOf, ogAST.PrimStringLiteral)):
                        p_id = array_content(param, p_id,
                                             find_basic_type(param_type))
791 792 793 794 795
                    code.append('{} := {};'.format(tmp_id, p_id))
                    list_of_params.append("{}'access{}"
                                          .format(tmp_id,
                                                  ", {}'Size".format(tmp_id)
                                                     if is_out_sig else ""))
Maxime Perrotin's avatar
Maxime Perrotin committed
796
                else:
797 798 799
                    # Output parameters/local variables
                    list_of_params.append(u"{var}'access{shared}"
                                         .format(var=p_id,
Maxime Perrotin's avatar
Maxime Perrotin committed
800 801
                                                shared=", {}'Size".format(p_id)
                                                  if is_out_sig else ""))
Maxime Perrotin's avatar
Maxime Perrotin committed
802
            if list_of_params:
803 804 805
                code.append(u'{RI}({params});'
                            .format(RI=out['outputName'],
                                    params=', '.join(list_of_params)))
Maxime Perrotin's avatar
Maxime Perrotin committed
806
            else:
807 808 809
                if not SHARED_LIB:
                    code.append(u'{RI};'.format(RI=out['outputName']))
                else:
Maxime Perrotin's avatar
Maxime Perrotin committed
810 811
                    code.append(u'{RI}(New_String("{RI}"));'
                                .format(RI=out['outputName']))
Maxime Perrotin's avatar
Maxime Perrotin committed
812 813 814
        else:
            # inner procedure call
            list_of_params = []
815
            for param in out.get('params', []):
Maxime Perrotin's avatar
Maxime Perrotin committed
816
                p_code, p_id, p_local = expression(param)
Maxime Perrotin's avatar
Maxime Perrotin committed
817 818 819 820 821
                code.extend(p_code)
                local_decl.extend(p_local)
                # no need to use temporary variables, we are in pure Ada
                list_of_params.append(p_id)
            if list_of_params:
822 823
                code.append(u'p{sep}{proc}({params});'.format(
                    sep=UNICODE_SEP,
Maxime Perrotin's avatar
Maxime Perrotin committed
824 825 826
                    proc=proc.inputString,
                    params=', '.join(list_of_params)))
            else:
827
                code.append(u'p{}{};'.format(UNICODE_SEP, proc.inputString))
Maxime Perrotin's avatar
Maxime Perrotin committed
828 829 830 831
    return code, local_decl


@generate.register(ogAST.TaskAssign)
832
def _task_assign(task, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
833 834 835 836 837 838
    ''' A list of assignments in a task symbol '''
    code, local_decl = [], []
    if task.comment:
        code.extend(traceability(task.comment))
    for expr in task.elems:
        code.extend(traceability(expr))
839 840
        # ExprAssign only returns code statements, no string
        code_assign, _, decl_assign = expression(expr)
Maxime Perrotin's avatar
Maxime Perrotin committed
841 842 843 844 845 846
        code.extend(code_assign)
        local_decl.extend(decl_assign)
    return code, local_decl


@generate.register(ogAST.TaskInformalText)
847
def _task_informal_text(task, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
848 849 850 851 852 853 854 855 856
    ''' Generate Ada comments for informal text '''
    code = []
    if task.comment:
        code.extend(traceability(task.comment))
    code.extend(['-- ' + text.replace('\n', '\n-- ') for text in task.elems])
    return code, []


@generate.register(ogAST.TaskForLoop)
857
def _task_forloop(task, **kwargs):
Maxime Perrotin's avatar
Maxime Perrotin committed
858 859 860 861 862 863
    '''
        Return the code corresponding to a for loop. Two forms are possible:
        for x in range ([start], stop [, step])
        for x in iterable (a SEQUENCE OF)
    '''
    stmt, local_decl = [], []
864
    local_scope = dict(LOCAL_VAR)
Maxime Perrotin's avatar
Maxime Perrotin committed
865 866 867 868 869 870 871
    if task.comment:
        stmt.extend(traceability(task.comment))
    stmt.extend(traceability(task))
    for loop in task.elems:
        if loop['range']:
            start_str, stop_str = '0', ''
            if loop['range']['start']:
Maxime Perrotin's avatar
Maxime Perrotin committed
872
                start_stmt, start_str, start_local = expression(
dbarbera's avatar
dbarbera committed
873
                                                    loop['range']['start'])
Maxime Perrotin's avatar
Maxime Perrotin committed
874 875 876 877
                local_decl.extend(start_local)
                stmt.extend(start_stmt)
            if loop['range']['step'] == 1:
                start_str += '..'
Maxime Perrotin's avatar
Maxime Perrotin committed
878
            stop_stmt, stop_str, stop_local = expression(loop['range']['stop'])
Maxime Perrotin's avatar
Maxime Perrotin committed
879 880 881
            local_decl.extend(stop_local)
            stmt.extend(stop_stmt)
            if loop['range']['step'] == 1:
Maxime Perrotin's avatar
Maxime Perrotin committed
882 883 884 885
                if unicode.isnumeric(stop_str):
                    stop_str = unicode(int(stop_str) - 1)
                else:
                    stop_str = u'{} - 1'.format(stop_str)
Maxime Perrotin's avatar
Maxime Perrotin committed
886
                stmt.append(
887
                        u'for {it} in {start}{stop} loop'
dbarbera's avatar
dbarbera committed
888
                        .format(it=loop['var'], start=start_str, stop=stop_str))
Maxime Perrotin's avatar
Maxime Perrotin committed
889 890 891
            else:
                # Step is not directly supported in Ada, we need to use 'while'
                stmt.extend(['declare',
892
                             u'{it} : Integer := {start};'
Maxime Perrotin's avatar
Maxime Perrotin committed
893 894 895 896
                             .format(it=loop['var'],
                             start=start_str),
                             '',
                             'begin',
897
                             u'while {it} < {stop} loop'.format(it=loop['var'],
Maxime Perrotin's avatar
Maxime Perrotin committed
898 899 900
                                                               stop=stop_str)])
        else:
            # case of form: FOR x in SEQUENCE OF
901 902 903
            # Add iterator to the list of local variables
            LOCAL_VAR.update({loop['var']: (loop['type'], None)})

Maxime Perrotin's avatar
Maxime Perrotin committed
904
            list_stmt, list_str, list_local = expression(loop['list'])
Maxime Perrotin's avatar
Maxime Perrotin committed
905
            basic_type = find_basic_type(loop['list'].exprType)
906
            list_payload = list_str + string_payload(loop['list'], list_str)
907 908 909 910 911
            if isinstance(loop['list'], ogAST.PrimSubstring) or \
                    basic_type.Min == basic_type.Max:
                range_str = u"{}'Range".format(list_payload)
            else:
                range_str = u"1 .. {}.Length".format(list_str)
Maxime Perrotin's avatar
Maxime Perrotin committed
912 913 914
            stmt.extend(list_stmt)
            local_decl.extend(list_local)
            stmt.extend(['declare',
915 916
                         '{} : {};'.format(loop['var'],
                                           type_name(loop['type'])),
Maxime Perrotin's avatar
Maxime Perrotin committed
917 918 919
                         '',
                         'begin',
                         'for {it}_idx in {rc} loop'.format(it=loop['var'],
920
                                                            rc=range_str),
921 922
                         '{it} := {var}({it}_idx);'.format(it=loop['var'],
                                                          var=list_payload)])
Maxime Perrotin's avatar
Maxime Perrotin committed
923 924 925 926
        try:
            code_trans, local_trans = generate(loop['transition'])
            if local_trans:
                stmt.append('declare')
927
                stmt.extend(set(local_trans))
Maxime Perrotin's avatar
Maxime Perrotin committed
928 929 930 931 932 933 934 935 936 937 938 939 940
                stmt.append('')
                stmt.append('begin')
            stmt.extend(code_trans)
            if local_trans:
                stmt.append('end;')
        except AttributeError:
            stmt.append('null;')
        if loop['range'] and loop['range']['step'] != 1:
            stmt.append('{it} := {it} + {step};'.format(it=loop['var'],
                                                   step=loop['range']['step']))
        stmt.append('end loop;')
        if (loop['range'] and loop['range']['step'] != 1) or loop['list']:
            stmt.append('end;')
941 942 943
    # Restore list of local variables
    LOCAL_VAR.clear()
    LOCAL_VAR.update(local_scope)
Maxime Perrotin's avatar
Maxime Perrotin committed
944 945 946
    return stmt, local_decl


Maxime Perrotin's avatar
Maxime Perrotin committed
947 948 949 950 951 952 953 954 955 956
@singledispatch
def expression(expr):
    ''' Generate the code for Expression-classes, returning 3 things:
        - list of statements
        - useable string corresponding to the evaluation of the expression,
        - list of local declarations
    '''
    raise TypeError('Unsupported expression: ' + str(expr))
    return [], '', []

Maxime Perrotin's avatar
Maxime Perrotin committed
957

Maxime Perrotin's avatar
Maxime Perrotin committed
958
@expression.register(ogAST.PrimVariable)
Maxime Perrotin's avatar
Maxime Perrotin committed
959 960
def _primary_variable(prim):
    ''' Single variable reference '''
961 962 963 964 965 966
    var = find_var(prim.value[0])
    if not var or is_local(var):
        sep = ''
    else:
        sep = LPREFIX + '.'
    #sep = (LPREFIX + '.') if find_var(prim.value[0]) else u''
Maxime Perrotin's avatar
Maxime Perrotin committed
967

dbarbera's avatar
dbarbera committed
968
    ada_string = u'{sep}{name}'.format(sep=sep, name=prim.value[0])
Maxime Perrotin's avatar
Maxime Perrotin committed
969

970 971
    if prim.exprType.__name__ == 'for_range':
        # Ada iterator in FOR loops is an Integer - we must cast to 64 bits
972
        ada_string = u'Asn1Int({})'.format(ada_string)
973
    return [], unicode(ada_string), []
Maxime Perrotin's avatar
Maxime Perrotin committed
974 975


976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
@expression.register(ogAST.PrimCall)
def _prim_call(prim):
    stmts, ada_string, local_decl = [], '', []

    ident = prim.value[0].lower()
    params = prim.value[1]['procParams']

    if ident in ('abs', 'fix', 'float'):
        # Return absolute value of a number
        param_stmts, param_str, local_var = expression(params[0])
        stmts.extend(param_stmts)
        local_decl.extend(local_var)
        ada_string += '{op}({param})'.format(
                param=param_str,
                op='abs' if ident == 'abs' else
Maxime Perrotin's avatar
Maxime Perrotin committed
991
                'Asn1Int' if ident == 'fix' else 'Asn1Real'
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
                if ident == 'float' else 'ERROR')
    elif ident == 'power':
        operands = [None, None]
        for idx, param in enumerate(params):
            stmt, operands[idx], local = expression(param)
            stmts.extend(stmt)
            local_decl.extend(local)
        ada_string += '{op[0]} ** Natural({op[1]})'.format(op=operands)
    elif ident == 'length':
        # Length of sequence of: take only the first parameter
        exp = params[0]
        exp_type = find_basic_type(exp.exprType)
        min_length = getattr(exp_type, 'Min', None)
        max_length = getattr(exp_type, 'Max', None)
        if min_length is None or max_length is None:
            error = '{} is not a SEQUENCE OF'.format(
                    exp.inputString)
            LOG.error(error)
            raise TypeError(error)
        param_stmts, param_str, local_var = expression(exp)
        stmts.extend(param_stmts)
        local_decl.extend(local_var)
Maxime Perrotin's avatar
Maxime Perrotin committed
1014 1015
        if min_length == max_length \
                and not isinstance(exp, ogAST.PrimSubstring):
1016 1017
            ada_string += min_length
        else: