vendor: Rename IntelPlatform to AlteraPlatform.

Fixes #1179.

README.md

@@ -42,7 +42,7 @@ Amaranth can be used to target any FPGA or ASIC process that accepts behavioral
   * AMD Spartan 6 (toolchains: ISE);
   * AMD 7-series (toolchains: Vivado, ISE);
   * AMD UltraScale, UltraScale+ (toolchains: Vivado);
-  * Intel (toolchains: Quartus);
+  * Altera (toolchains: Quartus);
   * Quicklogic EOS S3 (toolchains: **Yosys+VPR**).
 
 FOSS toolchains are listed in **bold**.

amaranth/vendor/__init__.py

@@ -4,6 +4,7 @@
 
 # Keep this list sorted alphabetically.
 __all__ = [
+    "AlteraPlatform",
     "GowinPlatform",
     "IntelPlatform",
     "LatticeECP5Platform",
@@ -20,12 +21,12 @@ def __dir__():
 
 
 def __getattr__(name):
+    if name in ("AlteraPlatform", "IntelPlatform"):
+        from ._altera import AlteraPlatform
+        return AlteraPlatform
     if name == "GowinPlatform":
         from ._gowin import GowinPlatform
         return GowinPlatform
-    if name == "IntelPlatform":
-        from ._intel import IntelPlatform
-        return IntelPlatform
     if name == "LatticeECP5Platform":
         from ._lattice_ecp5 import LatticeECP5Platform
         return LatticeECP5Platform

amaranth/vendor/_altera.py

@@ -4,7 +4,7 @@ from ..hdl import *
 from ..build import *
 
 
-class IntelPlatform(TemplatedPlatform):
+class AlteraPlatform(TemplatedPlatform):
     """
     .. rubric:: Quartus toolchain
 

docs/changes.rst

@@ -102,6 +102,7 @@ Platform integration changes
 * Added: :meth:`BuildPlan.execute_local_docker`.
 * Added: :meth:`BuildPlan.extract`.
 * Added: ``build.sh``  begins with ``#!/bin/sh``.
+* Changed: ``IntelPlatform`` renamed to ``AlteraPlatform``.
 * Deprecated: argument ``run_script=`` in :meth:`BuildPlan.execute_local`.
 * Removed: (deprecated in 0.4) :mod:`vendor.intel`, :mod:`vendor.lattice_ecp5`, :mod:`vendor.lattice_ice40`, :mod:`vendor.lattice_machxo2_3l`, :mod:`vendor.quicklogic`, :mod:`vendor.xilinx`. (`RFC 18`_)
 

docs/platform.rst

@@ -10,8 +10,8 @@ Platform integration
 .. toctree::
    :maxdepth: 2
 
+   platform/altera
    platform/gowin
-   platform/intel
    platform/lattice-ecp5
    platform/lattice-ice40
    platform/lattice-machxo-2-3l

docs/platform/altera.rst

@@ -0,0 +1,10 @@
+Altera
+######
+
+.. currentmodule:: amaranth.vendor
+
+The :class:`AlteraPlatform` class provides a base platform to support Altera toolchains.
+
+The Quartus and Mistral toolchains are supported.
+
+.. autoclass:: AlteraPlatform

docs/platform/intel.rst

@@ -1,10 +0,0 @@
-Intel
-#####
-
-.. currentmodule:: amaranth.vendor
-
-The :class:`IntelPlatform` class provides a base platform to support Intel toolchains.
-
-The Quartus and Mistral toolchains are supported.
-
-.. autoclass:: IntelPlatform