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Julien Fischer a3352a6e5d Do not include :- import_module' and :- use_module' declarations

Estimated hours taken: 22
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Do not include `:- import_module' and `:- use_module' declarations
in the implementation section of .int and .int2 files unless
the types that they export are required by the definition of
an equivalence type.  This should help prevent unnecessary
recompilations when new imports are made in the implementation
of modules.

Break up check_hlds.type_util so that predicates that do
not require access to the HLDS are placed in a new module,
parse_tree.prog_type.  The above change requires some of
these predicates.  This also removes one of the dependencies
between the parse_tree package on modules of the check_hlds
package.

Remove the remaining such dependency by moving
inst_constrains_unconstrained_var/1 from check_hlds.inst_util
to parse_tree.prog_mode.  None of the modules in parse_tree
now depend upon modules in check_hlds.

Modify the parser so that import_module declarations
that specify more than one module are replaced by multiple
import_module declarations, with one module per declaration.
This makes the above change easier to implement and is in
any case required by the upcoming diff for canonicalizing
module interfaces.  We also do the same for use_module and
include_module declarations.

compiler/modules.m:
	Don't import modules in the implementation section
	of interface files unless they are required by the
	definition of equivalence types.

compiler/prog_type.m:
	New module.  Move procedures from type_util that do
	not depend on the HLDS to here so that we can use them
	when generating interface files.

	XXX There are probably others that could be moved as
	well - I only moved those that were immediately useful.

compiler/type_util.m:
	Delete the procedures that have been moved to the
	new prog_type module.

compiler/prog_io.m:
	Remove the dependency on check_hlds.inst_util.

compiler/prog_io_typeclass.m:
compiler/equiv_type.m:
	Remove dependencies on check_hlds.type_util.

compiler/prog_util.m:
	Add a predicate sym_name_get_module_name/2 that is
	similar to sym_name_get_module_name/3 except that it
	fails if the input is an unqualified sym_name.

compiler/inst_util.m:
	Delete inst_contains_unconstrained_var/1 from this
	module and copy it to prog_mode.m.

compiler/parse_tree.m:
	Include the new module.

	Do not import the check_hlds package as all dependencies
	on this package have been removed.

compiler/*.m:
	Minor changes to conform to the above.

compiler/notes/compiler_design.html:
	Mention the new module.

2005-01-21 03:27:58 +00:00

.cvsignore

…

.nocopyright

New file. Contains links to the other files in this directory,

2003-10-31 03:30:08 +00:00

allocation.html

Delete an incorrect comment.

2003-10-23 07:24:40 +00:00

authors.html

…

bootstrapping.html