42 lines
1.9 KiB
Python
42 lines
1.9 KiB
Python
# -----------------------------------------------------------------------------
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# Description: Technology manifest loading and fallback helpers for routing layers and cross-section defaults.
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# Inside functions: technology_manifest_path, read_technology_manifest
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# Developer : Qin Yue @ 2026
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# Organization : OptiHK Limited
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# -----------------------------------------------------------------------------
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import os
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import yaml
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class TechnologyManifestError(Exception):
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"""Exception raised when a technology manifest cannot be found or parsed."""
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pass
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def technology_manifest_path(pdks_root: str, foundry: str, technology: str) -> str:
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"""Build the expected path to a foundry/technology manifest YAML file."""
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base = os.path.abspath(pdks_root)
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path = os.path.abspath(os.path.join(base, foundry, technology, "technology.yml"))
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# Keep user-provided foundry/technology names from escaping the configured
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# PDK root.
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if not path.startswith(base + os.sep):
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raise TechnologyManifestError("Invalid technology path")
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return path
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def read_technology_manifest(pdks_root: str, foundry: str, technology: str) -> dict:
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"""Load and validate the active technology manifest for the frontend."""
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path = technology_manifest_path(pdks_root, foundry, technology)
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if not os.path.exists(path):
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raise TechnologyManifestError("technology manifest not generated; run mxpic_forge technology export workflow")
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with open(path, "r", encoding="utf-8") as file:
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manifest = yaml.safe_load(file) or {}
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# The frontend route editor depends on both xsection definitions and global
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# defaults being present before it can safely style or build links.
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if not isinstance(manifest.get("xsections"), dict):
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raise TechnologyManifestError("technology manifest is missing xsections")
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if not isinstance(manifest.get("defaults"), dict):
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raise TechnologyManifestError("technology manifest is missing defaults")
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return manifest
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