1 files changed, 127 insertions, 17 deletions

diff --git a/tools/buildman/board.py b/tools/buildman/board.py
index 7bcc932..a333287 100644
--- a/tools/buildman/board.py
+++ b/tools/buildman/board.py
@@ -5,6 +5,72 @@
 
 import re
 
+class Expr:
+    """A single regular expression for matching boards to build"""
+
+    def __init__(self, expr):
+        """Set up a new Expr object.
+
+        Args:
+            expr: String cotaining regular expression to store
+        """
+        self._expr = expr
+        self._re = re.compile(expr)
+
+    def Matches(self, props):
+        """Check if any of the properties match the regular expression.
+
+        Args:
+           props: List of properties to check
+        Returns:
+           True if any of the properties match the regular expression
+        """
+        for prop in props:
+            if self._re.match(prop):
+                return True
+        return False
+
+    def __str__(self):
+        return self._expr
+
+class Term:
+    """A list of expressions each of which must match with properties.
+
+    This provides a list of 'AND' expressions, meaning that each must
+    match the board properties for that board to be built.
+    """
+    def __init__(self):
+        self._expr_list = []
+        self._board_count = 0
+
+    def AddExpr(self, expr):
+        """Add an Expr object to the list to check.
+
+        Args:
+            expr: New Expr object to add to the list of those that must
+                  match for a board to be built.
+        """
+        self._expr_list.append(Expr(expr))
+
+    def __str__(self):
+        """Return some sort of useful string describing the term"""
+        return '&'.join([str(expr) for expr in self._expr_list])
+
+    def Matches(self, props):
+        """Check if any of the properties match this term
+
+        Each of the expressions in the term is checked. All must match.
+
+        Args:
+           props: List of properties to check
+        Returns:
+           True if all of the expressions in the Term match, else False
+        """
+        for expr in self._expr_list:
+            if not expr.Matches(props):
+                return False
+        return True
+
 class Board:
     """A particular board that we can build"""
     def __init__(self, status, arch, cpu, soc, vendor, board_name, target, options):
@@ -124,6 +190,55 @@ class Boards:
         """
         return [board.target for board in self._boards if board.build_it]
 
+    def _BuildTerms(self, args):
+        """Convert command line arguments to a list of terms.
+
+        This deals with parsing of the arguments. It handles the '&'
+        operator, which joins several expressions into a single Term.
+
+        For example:
+            ['arm & freescale sandbox', 'tegra']
+
+        will produce 3 Terms containing expressions as follows:
+            arm, freescale
+            sandbox
+            tegra
+
+        The first Term has two expressions, both of which must match for
+        a board to be selected.
+
+        Args:
+            args: List of command line arguments
+        Returns:
+            A list of Term objects
+        """
+        syms = []
+        for arg in args:
+            for word in arg.split():
+                sym_build = []
+                for term in word.split('&'):
+                    if term:
+                        sym_build.append(term)
+                    sym_build.append('&')
+                syms += sym_build[:-1]
+        terms = []
+        term = None
+        oper = None
+        for sym in syms:
+            if sym == '&':
+                oper = sym
+            elif oper:
+                term.AddExpr(sym)
+                oper = None
+            else:
+                if term:
+                    terms.append(term)
+                term = Term()
+                term.AddExpr(sym)
+        if term:
+            terms.append(term)
+        return terms
+
     def SelectBoards(self, args):
         """Mark boards selected based on args
 
@@ -137,26 +252,21 @@ class Boards:
             due to each argument, arranged by argument.
         """
         result = {}
-        argres = {}
-        for arg in args:
-            result[arg] = 0
-            argres[arg] = re.compile(arg)
+        terms = self._BuildTerms(args)
+
         result['all'] = 0
+        for term in terms:
+            result[str(term)] = 0
 
         for board in self._boards:
-            if args:
-                for arg in args:
-                    argre = argres[arg]
-                    match = False
-                    for prop in board.props:
-                        match = argre.match(prop)
-                        if match:
-                            break
-                    if match:
-                        if not board.build_it:
-                            board.build_it = True
-                            result[arg] += 1
-                            result['all'] += 1
+            if terms:
+                match = False
+                for term in terms:
+                    if term.Matches(board.props):
+                        board.build_it = True
+                        result[str(term)] += 1
+                        result['all'] += 1
+                        break
             else:
                 board.build_it = True
                 result['all'] += 1