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Get all for loop related unit tests passing and expand the types of expressions

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that can exist in a for loop
This commit is contained in:
Jason Turner 2013-02-23 21:14:37 -07:00
parent c9995480e6
commit 48f538438d
4 changed files with 54 additions and 13 deletions
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8
include/chaiscript/language/chaiscript_common.hpp
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@ -21,9 +21,9 @@ namespace chaiscript
public:
enum Type { Error, Int, Float, Id, Char, Str, Eol, Fun_Call, Inplace_Fun_Call, Arg_List, Variable, Equation, Var_Decl,
Comparison, Addition, Subtraction, Multiplication, Division, Modulus, Array_Call, Dot_Access, Quoted_String, Single_Quoted_String,
Lambda, Block, Def, While, If, For, Inline_Array, Inline_Map, Return, File, Prefix, Break, Map_Pair, Value_Range,
Lambda, Block, Def, While, If, For, Inline_Array, Inline_Map, Return, File, Prefix, Break, Continue, Map_Pair, Value_Range,
Inline_Range, Annotation, Try, Catch, Finally, Method, Attr_Decl, Shift, Equality, Bitwise_And, Bitwise_Xor, Bitwise_Or,
Logical_And, Logical_Or, Switch, Case, Default, Ternary_Cond
Logical_And, Logical_Or, Switch, Case, Default, Ternary_Cond, Noop
};
};
@ -35,9 +35,9 @@ namespace chaiscript
const char *ast_node_type_to_string(int ast_node_type) {
const char *ast_node_types[] = { "Internal Parser Error", "Int", "Float", "Id", "Char", "Str", "Eol", "Fun_Call", "Inplace_Fun_Call", "Arg_List", "Variable", "Equation", "Var_Decl",
"Comparison", "Addition", "Subtraction", "Multiplication", "Division", "Modulus", "Array_Call", "Dot_Access", "Quoted_String", "Single_Quoted_String",
"Lambda", "Block", "Def", "While", "If", "For", "Inline_Array", "Inline_Map", "Return", "File", "Prefix", "Break", "Map_Pair", "Value_Range",
"Lambda", "Block", "Def", "While", "If", "For", "Inline_Array", "Inline_Map", "Return", "File", "Prefix", "Break", "Continue", "Map_Pair", "Value_Range",
"Inline_Range", "Annotation", "Try", "Catch", "Finally", "Method", "Attr_Decl", "Shift", "Equality", "Bitwise_And", "Bitwise_Xor", "Bitwise_Or",
"Logical_And", "Logical_Or", "Switch", "Case", "Default", "Ternary Condition"};
"Logical_And", "Logical_Or", "Switch", "Case", "Default", "Ternary Condition", "Noop"};
return ast_node_types[ast_node_type];
}

19
include/chaiscript/language/chaiscript_eval.hpp
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@ -1151,7 +1151,7 @@ namespace chaiscript
struct Continue_AST_Node : public AST_Node {
public:
Continue_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Break, const boost::shared_ptr<std::string> &t_fname=boost::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
Continue_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Continue, const boost::shared_ptr<std::string> &t_fname=boost::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col) { }
virtual ~Continue_AST_Node() {}
virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &){
@ -1159,6 +1159,23 @@ namespace chaiscript
}
};
struct Noop_AST_Node : public AST_Node {
public:
Noop_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Noop, const boost::shared_ptr<std::string> &t_fname=boost::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col),
m_value(const_var(true))
{ }
virtual ~Noop_AST_Node() {}
virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &){
// It's a no-op, that evaluates to "true"
return m_value;
}
private:
Boxed_Value m_value;
};
struct Map_Pair_AST_Node : public AST_Node {
public:
Map_Pair_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Map_Pair, const boost::shared_ptr<std::string> &t_fname=boost::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :

34
include/chaiscript/language/chaiscript_parser.hpp
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@ -1574,19 +1574,41 @@ namespace chaiscript
return retval;
}
/**
* Reads the C-style for conditions from input
*/
bool For_Guards() {
Equation();
if (!(Equation() && Eol()))
{
if (!Eol())
{
throw exception::eval_error("'for' loop initial statment missing", File_Position(m_line, m_col), *m_filename);
} else {
AST_NodePtr t(new eval::Noop_AST_Node());
m_match_stack.push_back(t);
}
}
if (!(Equation() && Eol()))
{
if (!Eol())
{
throw exception::eval_error("'for' loop condition missing", File_Position(m_line, m_col), *m_filename);
} else {
AST_NodePtr t(new eval::Noop_AST_Node());
m_match_stack.push_back(t);
}
}
if (!Equation())
{
AST_NodePtr t(new eval::Noop_AST_Node());
m_match_stack.push_back(t);
}
if (Char(';') && Operator() && Char(';') && Equation()) {
return true;
}
else {
throw exception::eval_error("Incomplete conditions in 'for' loop", File_Position(m_line, m_col), *m_filename);
}
}
/**
* Reads a for block from input

8
unittests/for.chai
View File

@ -40,9 +40,9 @@ for (;;l = 1)
assert_equal(0, l)
def isTrue(x)
def isNotFive(x)
{
if (x == 5)
if (x != 5)
{
return true
} else {
@ -50,7 +50,9 @@ def isTrue(x)
}
}
for (var m = 0; isTrue(m); m = m + 1)
var m;
for (m = 0; isNotFive(m); m = m + 1)
{
}