Support for semantic verification of calls to standard functions.
This commit makes a fundamental change in the way standard functions are handled by the compiler.

Fixing exponentiation used with symbol **

Fix bugs in exponentiation

Fix case statement in ST, adding support for enumerated types

Adding BYTE operators visit functions in inlinefcall

Fix bug with DIV and MOD operator in IL code generator

Fix bug in suffix of inlinefcall call in ST and IL

Remove inclusion of missing file in lib

Commiting merge with Mario's repository

commiting merge with Laurent's repository

changing 'make' to '$(MAKE)' so other make tools (e.g. gmake) may also be used.

Replacing extern declaration with #include of apropriate header file

Adding some comments, and removing a check for a semantic error in code being compiled.

Fix bug with inline function call in POU programmed in IL

Fix bug in function calls with literal parameters

Fix makefiles when not using make as make tool

Fix bug on initialization of temp variables not using setter

Fix bug when trying to find the type of a NULL symbol

Fix bug in inline function calls when using function with undetermined type interface with literals as input

Fix warnings when compiling matiec

Fix warning on nop statement at the end of function_block and program generated code

Adding double underscore in computed enumerated value to avoid conflict with other user defined identifiers

Add support for finding type of a constant enumerated value and managing conflict between same identifiers defined in different enumerated data types

Fix bug in declaring variable of enumerated type

Fix what I think is a bug (has not yet manifested itself).

Merging with Lauren't recent change.

Merging two previous commits.

Clean up some code.

Fix bug with array attribute in structure declaration

Add better comments, and change name of functions to clarify what they do.

Remove incorect debugging assertion.

Skip CONFIGURATION declarations in stage 3 for now, so semantic analysis does not stop when a configuration is encountered.

Fix bug when generating initial value for function return type when it is a complex type

Fix bug in debugging variable list compilation with structure and array disabling

Fix bug with TRUNC function and with type conversion functions called with constant as parameter

Allow use of ENO keyword in structured variable field selector.

Fixing REAL_TO_INT conversion (behaved like a trunc and not like a round)

fixing INSERT function: was inserting into incorrect position. (submitted by Manuele)

Fix bug when generating integer with leading zero (octal value for C compiler)

Allow [EOL] after a label in IL.

Fix bug when using an enumerated or subrange type to define a structure element

Fix bug when declaring data type directly derived from array type

Fix conversion of binary digits to hex, when generating code.

Fix missing '(' when declaring new simple derived data type.

Ignore underscores in decimal integer constants when determining size in bits...

When checking semantics of expressions, skip semantic checking of data type definitions
(not yet supported). If we don't skip, all subsequent POUs would not be checked.

Fixing algorithm that determines bit size of constants containing underscores.

Merging with Edouard's version

Fixing bug related to setting array variables with values coming from other variables
(e.g. X[0] := Y;)

Added __IEC_OUTPUT_FLAG, to mark variable whose forcing implies refresh on eache cycle.

Fix bug when debugging located variables of type memory (%M) for all variable classes

Merging with Edouard's changes

Fixing code generation of array indexes in Function Blocks.

Commiting merge with Laurent's recent dead code removal change.

Adding fflush capabilities. It is sometimes usefull when debuging the compiler...

Adding missing semicolons.

fixed build error with gcc 4.5.2

Merged with Edouard's modifications

Fix bug when debugging located variables of type memory (%M)

Removed dead code

Fixing implementation of CU, CD, and CUD in standard library.

Deleting dead code.

Merging changes.

Added tracking of order by which tokens are processed by lexical analyser.
This helps in correctly formating error messages when constructs begin in one file, and end in another.

Adding tracking of filename in which token is located.

Reverted semantic error message so that Beremiz can parse them and that user can double-click on error message to open related POU and select the faulty line.

Fixing error message incorrectly changed in previous merge.

fixing C code generation of return_statement_c and exit_statement_c

merging the Edouard's version.

fixing exit_statement_c: produce 'break' instead of 'exit(0); (Thanks to Manuele)

Fixing code generation of standard conversion functions.

Re-generated std lib related code, with updated headers, updated all forgotten headers

Merged matiec library headers update from Mario to LGPL

Changing to LGPL for library functions.

Updating origin and license info of library fuctions.
Conclude missing counter FBs.

Leave standard function names hardcoded, as these are considered keywords even though
they may not be implemented in the library.

New version of bistable.txt - due to license issues.

Make semantic error message compatible with beremiz

Merge

Fixes to make handling of standard functions in Semantic analyser compatible with code generation of standard functions

Merge with changes from Mario

Fixing stupid bug (that was disabling code generation).

Adding Makefile for Darwin (thanks go to Manuele)

starting to add proper header file with declaration of standard functions

Fixing error messages for IL semantic errors (brocken in a previous changeset/commit).

Updating license info (with Edouard's permission for relevant files).

Updating License info (with Edoaurd's permission for relevant files).

Adding some debug info

Do not crash when checking semantics of undeclared symbolic_variable.
NOTE: this update may have broken the printing of error messages
during semantic analysis of IL code.

Updating licensing information.

Error messages (stage3) now better identify the location of the error.

Adding debug conditional printf()s in stage 3.
Printing semantic error info to stderr instead of stdout.

Merging my Huge change with Edouards/Laurents version

Huge change.

Changed packing declaration in iec_types

Modify code generated for avoiding warning while compiling when configuration or resource don't have any global variable

Initial TIME support in debugger

Merged with Edouard's modifications

Bug with getter for pointed variables in accessors fixed

Added dumb SEMA?implementation

Adding missing support for accessors and retain in configuration files (Bug and fix reported by Manuele Conti)

Merged with modifications from Edouard

Task single parameter code generation broken after addition of accessors fixed.

Bug when function call result is a parameter of another function call fixed.

A forgotten case in type size getter switch prevented debugging outputs.

merge

Adding support for generating code for variable in step action association instead of action

Updated makefiles for cygwin build with no perl

Bug with global located variables accessors fixed

Bug with code generation of global located variables in resource fixed thanks to Mario

Bugs fixed:
- S and R operators using C++ literals
- Function block output assignment code generation

Bug when parsing standard function block call in IL

Bug when trying to get type of elements in a big complex structure fixed

Adding support for using arrays in POU interface

Using InOut variables in functions fixed

Bug on generate_c_inlinefcall fixed
Adding support for using structures in POU interface

Using function_call_iterator in generate_c_inlinefcall instead of creating a new visitor

Bug on standard functions called with literals fixed
Checking that number of parameters in function call doesn't exceed the maximum

Adding support for making distinction between external variables and located variables for forcing

Adding support for forcing global without perturbation from setting external

Bug in located variable initialization code fixed

Bug on SFC debugging fixed
Adding support for forcing transition state

Adding support for setter and getter on complex datatype in IL

Changes merged

Adding support for setter and getter on complex datatype in ST

Fix accessor code

type definition to match accessor and new debug

fixed cygwin build - still slooooooooow

Adding Flags bit symbols

Adding support for flags on Function Block variables for marking which variable must be debugged, retained or is forced

Bug with ULINT correction fixed

Adding support for declare, init, get and set macros

added files to ignore in hgignore

Adding support for declare, init, get and set macros

Bug with using non explicit literals as standard library functions input parameters fixed

Wiped out references to Lolitech

Replace \"lolitech\" contact by \"edouard\" contact

Fix some bug in debian packages

Fix some warnings on compilation

Remove warnings when compiling IL generated C code

Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized

Remove -pedantic flag to CFLAGS to allow unsigned long long to be compiled

Modify code generated to fit latest modifications in matiec and useless symbol definitions

Bug in eno_param_declaration error handle fixed

Bug with EN/ENO in generate_var_list that breaks parsing of variables.csv fixed

Mario changes merged

Adding missing Stage3 files.

Merged changes

Initial (very rough) version of semantic checker (stage3)

Introducing the search_il_operand_type files in the absyntax_utils folder.
The Makefile from absyntax_utils folder and the generate_c_il.cc from the stage4/generate_c
folder was also modified to work with the new search_il_operand_type file.

Applying patch from Iztok for old gcc versions

Bug with type conversion EN/ENO not evaluated fixed
Removing some warnings in iec_std_lib.h

prevent eclipse to push .project with .hgignore

removed dead hidden files

Fix problems with direct variables in expression while compiling resulting expression type

Fix segmentation fault when define global with location but no name (reported by brendan)

Removing un-necessary symbol direct_variable_type_name_c from abstract syntax tree

Fixing indentification

Adding inclusion of function blocks defined in AnnexF into library blocks

Adding support for parsing standard function in standard function blocks code generation

Adding inclusion of function blocks defined in AnnexF into library blocks

Bug on function without input parameters fixed

Removing failing error finding rule

Warning when compiling abs functions for unsigned integer fixed

bug when compiling for windows (missing getopt.h) fixed

Newer versions of g++ require access controls to be correct!

Adding support for single resource scheduling

Bug with bison versions earlier than 2.3 fixed

Moving absyntax utility functions out from stage4/generate_c

Moving absyntax utility files out from stage4/generate_c

Bug on "abs" not working with float fixed

Target Directory not parsed in command line fixed

Starting move of search utils to their own top level directory.

Adding support for SAFEBOOL. Some code generation yet to do...

Bug with non-working counters fixed

Adding support for checking direct variable declared before using

Bug with array datatype definition fixed

Bug generated when IL code starts whitout LD operand fixed

Fixed (again) some Makefile quirks.

updated : debian package scripts

Disable compiling warnings on Windows

Bug when function with unconnected input fixed

Canged default string length to 127, keeping strlen_t to int8_t

Fixed parameter count error on variadic functions with EN/ENO

Bug with external variable declaration fixed

Bug on standard function not defined with EN/ENO fixed

Bug with structure of structure fixed

Fixed errors in string_to_int.

Fixed typo in EN/ENO parameters handling for std library functions

STRING max size and length type can now be overloaded (define STR_MAX_LEN and STR_LEN_TYPE before including iec_types.h)

Adding support for compiling struct data types

Try to clean Makefile. Not a real success.