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Estimated hours taken: 4 Allow user-defined operator precedence tables for parser__read_term and term_io__write_term. library/ops.m: Define a typeclass `op_table' with methods for accessing operator precedence tables. Define a type `ops__mercury_op_table', representing the standard Mercury operator table. Make `ops__mercury_op_table' an instance of `op_table'. Define `ops__table' as equivalent to `ops__mercury_op_table' (it's obsolete, but we can't mark types as obsolete). Rename `ops__init_op_table' as `ops__init_mercury_op_table', mark ops__init_op_table as obsolete library/parser.m: library/term_io.m: Add variants of `parser__read_term' and `term_io__write_term' which take an operator precedence table. Don't hard-code the maximum priority and argument priority. Use the `op_table' methods to find those. Make the priority of operator terms (X `op` Y) 1, not 100. The reference manual states that operator terms have the highest precedence possible. This change slows down a program which does nothing but parse terms by a bit under 5%, less for writing. library/hash_table.m: Fix a few places where parentheses are required because operator terms now have the lowest possible priority. `rem' is an operator -- it doesn't need backquotes. compiler/mercury_to_mercury.m: library/io.m: Rename `ops__init_op_table' to `ops__init_mercury_op_table'. Pass the `op_table' to `ops__max_priority'. NEWS: doc/reference_manual.texi: Document the changes. Add operator terms to the operator table. In the "Terms" section of the reference manual, use the same terminology to describe operator terms as is used in the "Builtin Operators" section. samples/Mmakefile: samples/README: samples/calculator2.m: An example program. tests/hard_coded/term_io_test.exp: tests/invalid/func_errors.err_exp: tests/invalid/inst_list_dup.err_exp: tests/invalid/predmode.err_exp: tests/invalid/some_err.exp: `term_io__write_term' now has the same argument priority behaviour as `parser__read_term', so remove some unnecessary parentheses from the output.
29 lines
823 B
Plaintext
29 lines
823 B
Plaintext
#-----------------------------------------------------------------------------#
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# This source file is hereby placed in the public domain. -fjh (the author).
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#-----------------------------------------------------------------------------#
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# samples/Mmake - this is the main part of the Makefile
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# for building the Mercury sample programs.
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# To build these programs, first install the Mercury compiler,
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# type `mmake depend', and then type `mmake'.
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PROGS= hello cat calculator calculator2 sort eliza ultra_sub e \
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interpreter expand_terms
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DEPENDS=$(PROGS:%=%.depend)
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MAIN_TARGET=all
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#-----------------------------------------------------------------------------#
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# targets
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.PHONY: all
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all : $(PROGS)
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.PHONY: depend
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depend: $(DEPENDS)
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#-----------------------------------------------------------------------------#
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