Language Specification (B) : Implementation Parameters

Implementation Parameters

Module Impl provides implementation specific constants. Its provision is mandatory. Where any of the constants are dependent on user selectable compiler options, the module may be implemented as a built-in module.

Identity

Constant	Type	Meaning
ShortName	String Literal	short name of the language processor
LongName	String Literal	long name of the language processor
MajorVersion	Whole Number	major version of the language processor
MinorVersion	Whole Number	minor version of the language processor
SubMinorVersion	Whole Number	sub-minor version of the language processor
BuildNumber	Whole Number	build number of the language processor
HostEnvironment	String Literal	name of the host environment or operating system

Capability Flags

Boolean Constant	indicates whether language processor supports ...
SupportsM2BSK	Modula-2 R10 Bootstrap Kernel (M2BSK) subset
SupportsM2R10	Modula-2 R10 (M2R10) full specification
SupportsUnicode	type UNICHAR and its operations
SupportsUtf8Source	source files encoded in UTF-8
SupportsCFFI	C foreign function interface and <*FFI="C"*> pragma
SupportsCLRFFI	Microsoft CLR FFI and <*FFI="CLR"*> pragma
SupportsJVMFFI	Java Virtual Machine FFI and <*FFI="CLR"*> pragma

Implementation Limits

Whole Number Constant	indicates ...	required
MaxIdentLength	maximum significant length of identifiers	≥ 31
MaxNumLiteralLength	maximum length of number literals	≥ 40
MaxStrLiteralLength	maximum length of string literals	≥ 120
MaxLineCounter	maximum value of line counter for error messages	≥ 32000
MaxColumnCounter	maximum value of column counter for error messages	≥ 160
MaxEnumValues	maximum number of values of an enumeration type	≥ 4096
MaxSetElements	maximum number of elements in an enumerated set	≥ 128
MaxProcNestLevel	maximum nesting level of local procedures	≥ 2