diff options
author | Vegard Storheil Eriksen <zyp@jvnv.net> | 2021-01-07 02:12:00 +0100 |
---|---|---|
committer | Vegard Storheil Eriksen <zyp@jvnv.net> | 2021-01-07 02:12:00 +0100 |
commit | d4244f3d52f276337b44b0bab8c85094c985682f (patch) | |
tree | 26732a0db12d0b856d450409312536e8a1969e37 /build/scons_tools/tool_platform_spec.py | |
parent | ba807914e4f6afe9f95aad7aa4e634d47193ba5c (diff) |
build: Add platform spec framework.
Diffstat (limited to 'build/scons_tools/tool_platform_spec.py')
-rw-r--r-- | build/scons_tools/tool_platform_spec.py | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/build/scons_tools/tool_platform_spec.py b/build/scons_tools/tool_platform_spec.py new file mode 100644 index 0000000..a532036 --- /dev/null +++ b/build/scons_tools/tool_platform_spec.py @@ -0,0 +1,112 @@ +from SCons.Script import * + +import yaml +import re +import os.path + +def load(fn): + return yaml.load(open(fn), Loader = yaml.FullLoader) + +class Matcher: + pass + +class ReMatcher(Matcher): + def __init__(self, pattern): + self.pattern = pattern + + def match(self, meta, key): + m = re.match(self.pattern, meta.get(key, '')) + + if m: + meta.update(m.groupdict()) + return True + + return False + +class Import: + def __init__(self, fn): + self.fn = fn + self.data = None + + def _load(self): + if self.data is None: + self.data = load(self.fn) + + def __iter__(self): + self._load() + return iter(self.data or []) + +yaml.add_constructor('!re', (lambda loader, node: ReMatcher(loader.construct_scalar(node)))) + +def construct_import(loader, node): + fn = loader.construct_scalar(node) + path = os.path.split(loader.stream.name)[0] + + return Import(os.path.join(path, fn)) + +yaml.add_constructor('!import', construct_import) + +def unprefix(s): + return int(s[:-1]) * 1024**(' kMG'.index(s[-1])) + +yaml.add_constructor('!prefixed', (lambda loader, node: unprefix(loader.construct_scalar(node)))) +yaml.add_implicit_resolver('!prefixed', re.compile(r'^\d+[kMG]$')) + +def match(meta, name, value): + if isinstance(value, Matcher): + return value.match(meta, name) + + return meta.get(name) == value + +def merge(parent, key, value): + if key in parent: + target = parent[key] + if isinstance(target, dict): + for k, v in value.items(): + merge(target, k, v) + return + + elif isinstance(target, list): + target.extend(value) + return + + parent[key] = value + +def parse(state, data): + for obj in data: + if not obj: + continue + + m = obj.get('match') + if m: + if not all(match(state['meta'], name, value) for name, value in m.items()): + continue + + for key, value in obj.items(): + if key in ('match', '-'): + continue + + #state[key] = obj[key] + merge(state, key, obj[key]) + + if '-' in obj: + parse(state, obj['-']) + + return state + +def PlatformSpec(env, **kwargs): + state = { + 'meta': kwargs + } + + fn = str(env.File('${LAKS_PATH}/platforms/index.yaml')) + + data = yaml.load(open(fn), Loader = yaml.FullLoader) + + return parse(state, data) + +def exists(): + return True + +def generate(env): + env.AddMethod(PlatformSpec)
\ No newline at end of file |