mintro: Dependencies from source

3 files changed, 40 insertions, 1 deletions

diff --git a/mesonbuild/ast/__init__.py b/mesonbuild/ast/__init__.py
index a9370dc..48de523 100644
--- a/mesonbuild/ast/__init__.py
+++ b/mesonbuild/ast/__init__.py
@@ -16,6 +16,7 @@
 # or an interpreter-based tool.
 
 __all__ = [
+    'AstConditionLevel',
     'AstInterpreter',
     'AstIDGenerator',
     'AstIndentationGenerator',
@@ -28,5 +29,5 @@ __all__ = [
 from .interpreter import AstInterpreter
 from .introspection import IntrospectionInterpreter, build_target_functions
 from .visitor import AstVisitor
-from .postprocess import AstIDGenerator, AstIndentationGenerator
+from .postprocess import AstConditionLevel, AstIDGenerator, AstIndentationGenerator
 from .printer import AstPrinter
diff --git a/mesonbuild/ast/introspection.py b/mesonbuild/ast/introspection.py
index da2f740..225f43c 100644
--- a/mesonbuild/ast/introspection.py
+++ b/mesonbuild/ast/introspection.py
@@ -137,8 +137,16 @@ class IntrospectionInterpreter(AstInterpreter):
         if not args:
             return
         name = args[0]
+        has_fallback = 'fallback' in kwargs
+        required = kwargs.get('required', True)
+        condition_level = node.condition_level if hasattr(node, 'condition_level') else 0
+        if isinstance(required, mparser.ElementaryNode):
+            required = required.value
         self.dependencies += [{
             'name': name,
+            'required': required,
+            'has_fallback': has_fallback,
+            'conditional': condition_level > 0,
             'node': node
         }]
 
diff --git a/mesonbuild/ast/postprocess.py b/mesonbuild/ast/postprocess.py
index e913b4f..8e8732f 100644
--- a/mesonbuild/ast/postprocess.py
+++ b/mesonbuild/ast/postprocess.py
@@ -84,3 +84,33 @@ class AstIDGenerator(AstVisitor):
             self.counter[name] = 0
         node.ast_id = name + '#' + str(self.counter[name])
         self.counter[name] += 1
+
+class AstConditionLevel(AstVisitor):
+    def __init__(self):
+        self.condition_level = 0
+
+    def visit_default_func(self, node: mparser.BaseNode):
+        node.condition_level = self.condition_level
+
+    def visit_ForeachClauseNode(self, node: mparser.ForeachClauseNode):
+        self.visit_default_func(node)
+        self.condition_level += 1
+        node.items.accept(self)
+        node.block.accept(self)
+        self.condition_level -= 1
+
+    def visit_IfClauseNode(self, node: mparser.IfClauseNode):
+        self.visit_default_func(node)
+        for i in node.ifs:
+            i.accept(self)
+        if node.elseblock:
+            self.condition_level += 1
+            node.elseblock.accept(self)
+            self.condition_level -= 1
+
+    def visit_IfNode(self, node: mparser.IfNode):
+        self.visit_default_func(node)
+        self.condition_level += 1
+        node.condition.accept(self)
+        node.block.accept(self)
+        self.condition_level -= 1