Override user configuation with CLI options. Allow overriding with None

Signed-off-by: Krzysztof Boronski <kboronski@antmicro.com>

f4pga/flows/argparser.py

@@ -116,6 +116,10 @@ def _parse_depval(depvalstr: str):
     return d
 
 
+def _null_generator():
+    return (item for item in [])
+
+
 def _unescaped_matches(regexp: str, s: str, escape_chr="\\"):
     """
     Find all occurences of a pattern in a string that contains escape sequences.
@@ -128,17 +132,23 @@ def _unescaped_matches(regexp: str, s: str, escape_chr="\\"):
     # unescaped characters, but to map the results back to the string containing the
     # escape sequences, we need to track the offsets by which the characters were
     # shifted.
+
+    # TODO: This doesn't handle self-escape case
     offsets = []
     offset = 0
     for sl in s.split(escape_chr):
-        if len(sl) <= 1:
-            continue
-        noescape = sl[(1 if offset != 0 else 0) :]
+        noescape = sl[(1 if offset != 0 else 0) :] if len(sl) > 1 else ""
         for _ in noescape:
             offsets.append(offset)
         offset += 2
         noescapes += noescape
 
+    if len(offsets) == 0:
+        return _null_generator()
+
+    last_offset = offsets[-1]
+    offsets.append(last_offset)
+
     iter = re_finditer(regexp, noescapes)
 
     for m in iter:
@@ -188,7 +198,7 @@ def _parse_cli_value(s: str):
     """
 
     if len(s) == 0:
-        return ""
+        return None
 
     # List
     if s[0] == "[":

f4pga/flows/commands.py

@@ -44,6 +44,7 @@ from f4pga.flows.flow_config import (
     FlowConfig,
     FlowDefinition,
     open_project_flow_cfg,
+    override_prj_flow_cfg_by_cli,
     verify_platform_name,
 )
 from f4pga.flows.flow import Flow
@@ -219,13 +220,14 @@ def cmd_build(args: Namespace):
         project_flow_cfg = open_project_flow_config(args.flow)
     elif part_name is not None:
         project_flow_cfg = ProjectFlowConfig(".temp.flow.json")
-        project_flow_cfg.flow_cfg = get_cli_flow_config(args, part_name)
     if part_name is None and project_flow_cfg is not None:
         part_name = project_flow_cfg.get_default_part()
 
-    if project_flow_cfg is None:
+    if (project_flow_cfg is None) and part_name is None:
         fatal(-1, "No configuration was provided. Use `--flow`, and/or " "`--part` to configure flow.")
 
+    override_prj_flow_cfg_by_cli(project_flow_cfg, get_cli_flow_config(args, part_name))
+
     flow_cfg = make_flow_config(project_flow_cfg, part_name)
 
     if args.info:

f4pga/flows/flow.py

@@ -70,7 +70,7 @@ class Flow:
         self.dep_paths = {
             n: p
             for n, p in cfg.get_dependency_overrides().items()
-            if p_req_exists(p)  # and not p_dep_differ(p, f4cache)
+            if (p is not None) and p_req_exists(p)  # and not p_dep_differ(p, f4cache)
         }
         if f4cache is not None:
             for dep in self.dep_paths.values():

f4pga/flows/flow_config.py

@@ -132,6 +132,54 @@ class ProjectFlowConfig:
         return platform_ovds
 
 
+def override_prj_flow_cfg_by_cli(cfg: ProjectFlowConfig, cli_d: "dict[str, dict[str, dict]]"):
+    for part_name, part_cfg in cli_d.items():
+        print(f"OVERRIDING CONFIG FOR {part_name}")
+        p_cfg = cfg.flow_cfg.get(part_name)
+        if p_cfg is None:
+            p_cfg = {}
+            cfg.flow_cfg[part_name] = p_cfg
+        cli_p_values = part_cfg.get("values")
+        cli_p_dependencies = part_cfg.get("dependencies")
+        p_values = p_cfg.get("values")
+        p_dependencies = p_cfg.get("dependencies")
+        if cli_p_values is not None:
+            if p_values is None:
+                p_values = {}
+                part_cfg["values"] = p_values
+            p_values.update(cli_p_values)
+        if cli_p_dependencies is not None:
+            if p_dependencies is None:
+                p_dependencies = {}
+                part_cfg["dependencies"] = p_dependencies
+            p_dependencies.update(cli_p_dependencies)
+
+        for stage_name, cli_stage_cfg in part_cfg.items():
+            if _is_kword(stage_name):
+                continue
+
+            stage_cfg = part_cfg.get(stage_name)
+            if stage_cfg is None:
+                stage_cfg = {}
+                part_cfg[stage_name] = stage_cfg
+
+            stage_values = stage_cfg.get("values")
+            stage_dependencies = stage_cfg.get("dependencies")
+            cli_stage_values = cli_stage_cfg.get("values")
+            cli_stage_dependencies = cli_stage_cfg.get("dependencies")
+
+            if cli_stage_values is not None:
+                if stage_values is None:
+                    stage_values = {}
+                    stage_cfg["values"] = stage_values
+                stage_values.update(cli_stage_values)
+            if cli_stage_dependencies is not None:
+                if stage_dependencies is None:
+                    stage_dependencies = {}
+                    stage_cfg["dependencies"] = stage_dependencies
+                stage_dependencies.update(cli_stage_dependencies)
+
+
 class FlowConfig:
     part: str
     r_env: ResolutionEnv
@@ -144,7 +192,7 @@ class FlowConfig:
         self.stages = platform_def.stages
         self.part = part
 
-        self.dependencies_explicit = deep(lambda p: str(Path(p).resolve()))(
+        self.dependencies_explicit = deep(lambda p: str(Path(p).resolve()), allow_none=True)(
             self.r_env.resolve(project_config.get_dependencies_raw(part))
         )