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https://github.com/Mercury-Language/mercury.git
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fdd141bf77
tests/invalid/*.{m,err_exp}:
tests/misc_tests/*.m:
tests/mmc_make/*.m:
tests/par_conj/*.m:
tests/purity/*.m:
tests/stm/*.m:
tests/string_format/*.m:
tests/structure_reuse/*.m:
tests/submodules/*.m:
tests/tabling/*.m:
tests/term/*.m:
tests/trailing/*.m:
tests/typeclasses/*.m:
tests/valid/*.m:
tests/warnings/*.{m,exp}:
Make these tests use four-space indentation, and ensure that
each module is imported on its own line. (I intend to use the latter
to figure out which subdirectories' tests can be executed in parallel.)
These changes usually move code to different lines. For the tests
that check compiler error messages, expect the new line numbers.
browser/cterm.m:
browser/tree234_cc.m:
Import only one module per line.
tests/hard_coded/boyer.m:
Fix something I missed.
104 lines
2.8 KiB
Mathematica
104 lines
2.8 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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% This test case triggered an infinite loop in deforestation
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% in the compiler of 3/11/1998.
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:- module deforest_loop.
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:- interface.
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:- import_module float.
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:- import_module list.
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% Lights are modelled as points.
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:- type light
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---> light(
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float, % Power in range [0.0, 1.0].
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vec % Position of light.
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).
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:- type attributes == int.
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:- pred shade(scene, ray, ray, attributes, colour).
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:- mode shade(in(scene), in, in, in, out) is det.
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:- type vec == int.
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:- inst scene
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---> scene(
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list_skel(object),
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ground,
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ground,
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ground,
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ground,
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ground,
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ground
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).
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:- type scene
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---> scene(
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list(object), % objects
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list(light), % light sources
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float, % ambient illumination
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float, % coefficient of specular reflection
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float, % exponent of specular reflection
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float, % focal length of pin-hole camera
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colour % background colour
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).
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:- type colour ---> rgb(float, float, float).
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:- type ray == int.
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:- type object == pred(int, int).
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:- inst object == (pred(in, out) is nondet).
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:- implementation.
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:- import_module list.
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:- import_module math.
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shade(Scene, Ray, Intersection, Attributes, Colour) :-
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Colour0 = colour(Attributes),
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Ambient = scale(ambient(Scene), Colour0),
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list__map(shade_from_light(Scene, Ray, Intersection, Colour0),
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lights(Scene), Colours),
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list__foldl(add_colours, Colours, Ambient, Colour).
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:- pred shade_from_light(scene, ray, ray, colour, light, colour).
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:- mode shade_from_light(in(scene), in, in, in, in, out) is det.
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:- pragma no_inline(shade_from_light/6).
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shade_from_light(_, _, _, _, _, rgb(0.0, 0.0, 0.0)).
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:- func colour(attributes) = colour.
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:- pragma no_inline(colour/1).
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colour(_) = rgb(0.0, 0.0, 0.0).
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:- func scale(float, colour) = colour.
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scale(F, rgb(R, G, B)) = rgb(range(F * R), range(F * G), range(F * B)).
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:- func ambient(scene::in(scene)) = (float::out) is det.
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:- pragma no_inline(ambient/1).
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ambient(_) = 0.0.
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:- func lights(scene::in(scene)) = (list(light)::out) is det.
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:- pragma no_inline(lights/1).
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lights(_) = [].
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:- pred add_colours(colour::in, colour::in, colour::out) is det.
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add_colours(C0, C1, C0 + C1).
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:- func '+'(colour, colour) = colour.
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rgb(Ra, Ga, Ba) + rgb(Rb, Gb, Bb) =
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rgb(range(Ra + Rb), range(Ga + Gb), range(Ba + Bb)).
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:- func range(float) = float.
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:- pragma no_inline(range/1).
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range(X) = X.
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