diff options
Diffstat (limited to 'valexpr.cc')
| -rw-r--r-- | valexpr.cc | 33 |
1 files changed, 33 insertions, 0 deletions
@@ -1492,6 +1492,39 @@ value_expr_t * parse_value_expr(std::istream& in, scope_t * scope, return node.release(); } +valexpr_context::valexpr_context(const ledger::value_expr_t * _expr, + const std::string& desc) throw() + : expr(NULL), error_node(_expr), error_context(desc) +{ + error_node->acquire(); +} + +valexpr_context::~valexpr_context() throw() +{ + if (expr) expr->release(); + if (error_node) error_node->release(); +} + +void valexpr_context::describe(std::ostream& out) const throw() +{ + if (! expr) { + out << "Valexpr_context expr not set!" << std::endl; + return; + } + + if (! desc.empty()) + out << desc << std::endl; + + out << " "; + unsigned long start = out.tellp(); + unsigned long pos = ledger::write_value_expr(out, expr, + error_node, start); + out << std::endl << " "; + for (int i = 0; i < pos - start; i++) + out << " "; + out << "^" << std::endl; +} + unsigned long write_value_expr(std::ostream& out, const value_expr_t * node, const value_expr_t * node_to_find, |