generic-library/ChaiScript
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More parser simplification

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This commit is contained in:
Jason Turner
2016-04-10 22:27:35 -06:00
parent 866db4ee8b
commit 443828fa23
2 changed files with 53 additions and 55 deletions
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96
include/chaiscript/language/chaiscript_parser.hpp
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@@ -2036,7 +2036,7 @@ namespace chaiscript
func_call->children.insert(func_call->children.begin(), dot_access->children.back());
dot_access->children.pop_back();
dot_access->children.push_back(std::move(func_call));
if (dot_access->children.size() != 3) throw exception::eval_error("Incomplete dot access fun call", File_Position(m_position.line, m_position.col), *m_filename);
if (dot_access->children.size() != 2) throw exception::eval_error("Incomplete dot access fun call", File_Position(m_position.line, m_position.col), *m_filename);
m_match_stack.push_back(std::move(dot_access));
}
}
@@ -2049,13 +2049,13 @@ namespace chaiscript
build_match<eval::Array_Call_AST_Node>(prev_stack_top);
}
else if (Symbol(".", true)) {
else if (Symbol(".")) {
has_more = true;
if (!(Id())) {
throw exception::eval_error("Incomplete dot access fun call", File_Position(m_position.line, m_position.col), *m_filename);
}
if ( std::distance(m_match_stack.begin() + static_cast<int>(prev_stack_top), m_match_stack.end()) != 3) {
if ( std::distance(m_match_stack.begin() + static_cast<int>(prev_stack_top), m_match_stack.end()) != 2) {
throw exception::eval_error("Incomplete dot access fun call", File_Position(m_position.line, m_position.col), *m_filename);
}
build_match<eval::Dot_Access_AST_Node>(prev_stack_top);
@@ -2221,61 +2221,59 @@ namespace chaiscript
if (t_precedence < m_operators.size()) {
if (Operator(t_precedence+1)) {
retval = true;
if (Operator_Helper(t_precedence)) {
do {
while (Eol()) {}
if (!Operator(t_precedence+1)) {
throw exception::eval_error("Incomplete "
+ std::string(ast_node_type_to_string(m_operators[t_precedence])) + " expression",
File_Position(m_position.line, m_position.col), *m_filename);
}
while (Operator_Helper(t_precedence)) {
while (Eol()) {}
if (!Operator(t_precedence+1)) {
throw exception::eval_error("Incomplete "
+ std::string(ast_node_type_to_string(m_operators[t_precedence])) + " expression",
File_Position(m_position.line, m_position.col), *m_filename);
}
AST_NodePtr oper = m_match_stack.at(m_match_stack.size()-2);
AST_NodePtr oper = m_match_stack.at(m_match_stack.size()-2);
switch (m_operators[t_precedence]) {
case(AST_Node_Type::Ternary_Cond) :
m_match_stack.erase(advance_copy(m_match_stack.begin(), m_match_stack.size() - 2),
advance_copy(m_match_stack.begin(), m_match_stack.size() - 1));
if (Symbol(":")) {
if (!Operator(t_precedence+1)) {
throw exception::eval_error("Incomplete "
+ std::string(ast_node_type_to_string(m_operators[t_precedence])) + " expression",
File_Position(m_position.line, m_position.col), *m_filename);
}
build_match<eval::Ternary_Cond_AST_Node>(prev_stack_top);
}
else {
switch (m_operators[t_precedence]) {
case(AST_Node_Type::Ternary_Cond) :
m_match_stack.erase(advance_copy(m_match_stack.begin(), m_match_stack.size() - 2),
advance_copy(m_match_stack.begin(), m_match_stack.size() - 1));
if (Symbol(":")) {
if (!Operator(t_precedence+1)) {
throw exception::eval_error("Incomplete "
+ std::string(ast_node_type_to_string(m_operators[t_precedence])) + " expression",
File_Position(m_position.line, m_position.col), *m_filename);
}
break;
build_match<eval::Ternary_Cond_AST_Node>(prev_stack_top);
}
else {
throw exception::eval_error("Incomplete "
+ std::string(ast_node_type_to_string(m_operators[t_precedence])) + " expression",
File_Position(m_position.line, m_position.col), *m_filename);
}
break;
case(AST_Node_Type::Addition) :
case(AST_Node_Type::Multiplication) :
case(AST_Node_Type::Shift) :
case(AST_Node_Type::Equality) :
case(AST_Node_Type::Bitwise_And) :
case(AST_Node_Type::Bitwise_Xor) :
case(AST_Node_Type::Bitwise_Or) :
case(AST_Node_Type::Comparison) :
assert(m_match_stack.size() > 1);
m_match_stack.erase(advance_copy(m_match_stack.begin(), m_match_stack.size() - 2),
advance_copy(m_match_stack.begin(), m_match_stack.size() - 1));
build_match<eval::Binary_Operator_AST_Node>(prev_stack_top, oper->text);
break;
case(AST_Node_Type::Addition) :
case(AST_Node_Type::Multiplication) :
case(AST_Node_Type::Shift) :
case(AST_Node_Type::Equality) :
case(AST_Node_Type::Bitwise_And) :
case(AST_Node_Type::Bitwise_Xor) :
case(AST_Node_Type::Bitwise_Or) :
case(AST_Node_Type::Comparison) :
assert(m_match_stack.size() > 1);
m_match_stack.erase(advance_copy(m_match_stack.begin(), m_match_stack.size() - 2),
advance_copy(m_match_stack.begin(), m_match_stack.size() - 1));
build_match<eval::Binary_Operator_AST_Node>(prev_stack_top, oper->text);
break;
case(AST_Node_Type::Logical_And) :
build_match<eval::Logical_And_AST_Node>(prev_stack_top);
break;
case(AST_Node_Type::Logical_Or) :
build_match<eval::Logical_Or_AST_Node>(prev_stack_top);
break;
case(AST_Node_Type::Logical_And) :
build_match<eval::Logical_And_AST_Node>(prev_stack_top);
break;
case(AST_Node_Type::Logical_Or) :
build_match<eval::Logical_Or_AST_Node>(prev_stack_top);
break;
default:
throw exception::eval_error("Internal error: unhandled ast_node", File_Position(m_position.line, m_position.col), *m_filename);
}
} while (Operator_Helper(t_precedence));
default:
throw exception::eval_error("Internal error: unhandled ast_node", File_Position(m_position.line, m_position.col), *m_filename);
}
}
}
}