From ef448da57bdcb6fc9feb39454114acba11849489 Mon Sep 17 00:00:00 2001
From: Rhys Ulerich <rhys.ulerich@gmail.com>
Date: Sat, 11 Feb 2012 20:50:21 -0600
Subject: add Eigen::Array support to GDB pretty printers

---
 debug/gdb/printers.py | 53 ++++++++++++++++++++++++++++-----------------------
 1 file changed, 29 insertions(+), 24 deletions(-)

diff --git a/debug/gdb/printers.py b/debug/gdb/printers.py
index a5230dc78..8dab8fffb 100644
--- a/debug/gdb/printers.py
+++ b/debug/gdb/printers.py
@@ -47,10 +47,14 @@ import itertools
 
 
 class EigenMatrixPrinter:
-	"Print Eigen Matrix of some kind"
+	"Print Eigen Matrix or Array of some kind"
 
-	def __init__(self, val):
+	def __init__(self, variety, val):
 		"Extract all the necessary information"
+		
+		# Save the variety (presumably "Matrix" or "Array") for later usage
+		self.variety = variety
+		
 		# The gdb extension does not support value template arguments - need to extract them by hand
 		type = val.type
 		if type.code == gdb.TYPE_CODE_REF:
@@ -61,7 +65,7 @@ class EigenMatrixPrinter:
 		m = regex.findall(tag)[0][1:-1]
 		template_params = m.split(',')
 		template_params = map(lambda x:x.replace(" ", ""), template_params)
-
+		
 		if template_params[1] == '-0x00000000000000001' or template_params[1] == '-0x000000001':
 			self.rows = val['m_storage']['m_rows']
 		else:
@@ -77,9 +81,9 @@ class EigenMatrixPrinter:
 			self.options = template_params[3];
 		
 		self.rowMajor = (int(self.options) & 0x1)
-
+		
 		self.innerType = self.type.template_argument(0)
-
+		
 		self.val = val
 		
 		# Fixed size matrices have a struct as their storage, so we need to walk through this
@@ -96,12 +100,12 @@ class EigenMatrixPrinter:
 			self.currentRow = 0
 			self.currentCol = 0
 			self.rowMajor = rowMajor
-
+			
 		def __iter__ (self):
 			return self
-
+			
 		def next(self):
-		
+			
 			row = self.currentRow
 			col = self.currentCol
 			if self.rowMajor == 0:
@@ -121,7 +125,7 @@ class EigenMatrixPrinter:
 					self.currentCol = 0
 					self.currentRow = self.currentRow + 1
 				
-
+			
 			item = self.dataPtr.dereference()
 			self.dataPtr = self.dataPtr + 1
 			if (self.cols == 1): #if it's a column vector
@@ -129,17 +133,17 @@ class EigenMatrixPrinter:
 			elif (self.rows == 1): #if it's a row vector
 				return ('[%d]' % (col,), item)
 			return ('[%d,%d]' % (row, col), item)
-
+			
 	def children(self):
 		
 		return self._iterator(self.rows, self.cols, self.data, self.rowMajor)
-
+		
 	def to_string(self):
-		return "Eigen::Matrix<%s,%d,%d,%s> (data ptr: %s)" % (self.innerType, self.rows, self.cols, "RowMajor" if self.rowMajor else  "ColMajor", self.data)
+		return "Eigen::%s<%s,%d,%d,%s> (data ptr: %s)" % (self.variety, self.innerType, self.rows, self.cols, "RowMajor" if self.rowMajor else  "ColMajor", self.data)
 
 class EigenQuaternionPrinter:
 	"Print an Eigen Quaternion"
-
+	
 	def __init__(self, val):
 		"Extract all the necessary information"
 		# The gdb extension does not support value template arguments - need to extract them by hand
@@ -159,18 +163,18 @@ class EigenQuaternionPrinter:
 			self.dataPtr = dataPtr
 			self.currentElement = 0
 			self.elementNames = ['x', 'y', 'z', 'w']
-
+			
 		def __iter__ (self):
 			return self
-
+			
 		def next(self):
 			element = self.currentElement
-
+			
 			if self.currentElement >= 4: #there are 4 elements in a quanternion
 				raise StopIteration
 			
 			self.currentElement = self.currentElement + 1
-
+			
 			item = self.dataPtr.dereference()
 			self.dataPtr = self.dataPtr + 1
 			return ('[%s]' % (self.elementNames[element],), item)
@@ -178,13 +182,14 @@ class EigenQuaternionPrinter:
 	def children(self):
 		
 		return self._iterator(self.data)
-
+	
 	def to_string(self):
 		return "Eigen::Quaternion<%s> (data ptr: %s)" % (self.innerType, self.data)
 
 def build_eigen_dictionary ():
 	pretty_printers_dict[re.compile('^Eigen::Quaternion<.*>$')] = lambda val: EigenQuaternionPrinter(val)
-	pretty_printers_dict[re.compile('^Eigen::Matrix<.*>$')] = lambda val: EigenMatrixPrinter(val)
+	pretty_printers_dict[re.compile('^Eigen::Matrix<.*>$')] = lambda val: EigenMatrixPrinter("Matrix", val)
+	pretty_printers_dict[re.compile('^Eigen::Array<.*>$')]  = lambda val: EigenMatrixPrinter("Array",  val)
 
 def register_eigen_printers(obj):
 	"Register eigen pretty-printers with objfile Obj"
@@ -195,22 +200,22 @@ def register_eigen_printers(obj):
 
 def lookup_function(val):
 	"Look-up and return a pretty-printer that can print va."
-
+	
 	type = val.type
-
+	
 	if type.code == gdb.TYPE_CODE_REF:
 		type = type.target()
 	
 	type = type.unqualified().strip_typedefs()
-
+	
 	typename = type.tag
 	if typename == None:
 		return None
-
+	
 	for function in pretty_printers_dict:
 		if function.search(typename):
 			return pretty_printers_dict[function](val)
-
+	
 	return None
 
 pretty_printers_dict = {}
-- 
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