Moved around most of the files so that source code is in src/, documentation

is in doc/, etc.

1 files changed, 123 insertions, 0 deletions

diff --git a/src/scope.cc b/src/scope.cc
new file mode 100644
index 00000000..7a349949
--- /dev/null
+++ b/src/scope.cc
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2003-2008, John Wiegley.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of New Artisans LLC nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "scope.h"
+
+namespace ledger {
+
+void symbol_scope_t::define(const string& name, expr_t::ptr_op_t def)
+{
+  DEBUG("ledger.xpath.syms", "Defining '" << name << "' = " << def);
+
+  std::pair<symbol_map::iterator, bool> result
+    = symbols.insert(symbol_map::value_type(name, def));
+  if (! result.second) {
+    symbol_map::iterator i = symbols.find(name);
+    assert(i != symbols.end());
+    symbols.erase(i);
+
+    std::pair<symbol_map::iterator, bool> result2
+      = symbols.insert(symbol_map::value_type(name, def));
+    if (! result2.second)
+      throw_(compile_error,
+	     "Redefinition of '" << name << "' in same scope");
+  }
+}
+
+expr_t::ptr_op_t symbol_scope_t::lookup(const string& name)
+{
+  symbol_map::const_iterator i = symbols.find(name);
+  if (i != symbols.end())
+    return (*i).second;
+
+  return child_scope_t::lookup(name);
+}
+
+#if 0
+namespace {
+  int count_leaves(expr_t::ptr_op_t expr)
+  {
+    int count = 0;
+    if (expr->kind != expr_t::op_t::O_COMMA) {
+      count = 1;
+    } else {
+      count += count_leaves(expr->left());
+      count += count_leaves(expr->right());
+    }
+    return count;
+  }
+
+  expr_t::ptr_op_t reduce_leaves(expr_t::ptr_op_t expr,
+				 expr_t::ptr_op_t context)
+  {
+    if (! expr)
+      return NULL;
+
+    expr_t::ptr_op_t temp;
+
+    if (expr->kind != expr_t::op_t::O_COMMA) {
+      if (expr->kind < expr_t::op_t::TERMINALS) {
+	temp.reset(expr);
+      } else {
+	temp.reset(new op_t(expr_t::op_t::VALUE));
+	temp->set_value(NULL_VALUE);
+	expr->compute(temp->as_value_lval(), context);
+      }
+    } else {
+      temp.reset(new op_t(expr_t::op_t::O_COMMA));
+      temp->set_left(reduce_leaves(expr->left(), context));
+      temp->set_right(reduce_leaves(expr->right(), context));
+    }
+    return temp.release();
+  }
+
+  expr_t::ptr_op_t find_leaf(expr_t::ptr_op_t context, int goal, long& found)
+  {
+    if (! context)
+      return NULL;
+
+    if (context->kind != expr_t::op_t::O_COMMA) {
+      if (goal == found++)
+	return context;
+    } else {
+      expr_t::ptr_op_t expr = find_leaf(context->left(), goal, found);
+      if (expr)
+	return expr;
+      expr = find_leaf(context->right(), goal, found);
+      if (expr)
+	return expr;
+    }
+    return NULL;
+  }
+}
+#endif
+
+} // namespace ledger