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Discard and warn against conflicting expression operators.

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This commit is contained in:
Miguel Lechon
2021-09-09 12:21:03 +02:00
parent c6c790e50d
commit c0a50bfe27
3 changed files with 205 additions and 98 deletions
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tests/expression_tests.c
+46 -13
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@@ -1,15 +1,5 @@
//$ exe //
#if 0
#define ASSERT(expr) {if(!(expr)){fprintf(stderr, "Assertion failed: %s, line %d (%s)\n", __FILE__, __LINE__, #expr); __builtin_debugtrap();}}
#define HARD_ASSERT(expr) {if(!(expr)){fprintf(stderr, "Assertion failed: %s, line %d (%s)\n", __FILE__, __LINE__, #expr); __builtin_debugtrap();}}
#define BP ASSERT(!"Break point");
#define NotTested ASSERT(!"Not tested");
#define STATIC_ASSERT(expr) U8 MACRO_CONCAT(static_assert_, __COUNTER__)[(expr)?(1):(-1)]
#define NotImplemented ASSERT(!"Not implemented");
#endif
#include "md.h"
#include "md.c"
@@ -86,7 +76,6 @@ typedef enum{
} Op;
#undef X
static MD_String8 node_raw_contents(MD_Node *node, MD_b32 exclude_outer){
MD_String8 result = {0};
@@ -194,7 +183,6 @@ static MD_String8 parenthesize(MD_Arena *arena, OperatorDescription *descs, MD_E
return result;
}
int main(void){
OperatorDescription operator_array[Op_COUNT] = {0};
#define X(name, token, kind_, prec) \
@@ -204,9 +192,54 @@ int main(void){
#undef X
arena = MD_ArenaAlloc(1ull << 40);
/* NOTE: Operator table bake errors */ {
MD_ExprOperatorList operator_list = {0};
MD_ExprOperatorTable op_table = {0};
MD_String8 plus = MD_S8Lit("+");
MD_String8 minus = MD_S8Lit("-");
MD_Node *plus_node = MD_MakeNode(arena, MD_NodeKind_Main, plus, plus, 0);
MD_Node *minus_node = MD_MakeNode(arena, MD_NodeKind_Main, minus, minus, 0);
MD_Node *plus_node_bis = MD_MakeNode(arena, MD_NodeKind_Main, plus, plus, 0);
// NOTE: Wrong operator kind
operator_list = (MD_ExprOperatorList){0};
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Null, 1, plus_node);
op_table = MD_ExprBakeOperatorTableFromList(arena, &operator_list);
MD_Assert(op_table.errors.max_message_kind = MD_MessageKind_Warning && op_table.errors.node_count == 1 &&
op_table.errors.first->node == plus_node);
// NOTE: Repeat operator
operator_list = (MD_ExprOperatorList){0};
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Binary, 1, plus_node);
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Binary, 1, plus_node_bis);
op_table = MD_ExprBakeOperatorTableFromList(arena, &operator_list);
MD_Assert(op_table.errors.max_message_kind = MD_MessageKind_Warning && op_table.errors.node_count == 1 &&
op_table.errors.first->node == plus_node_bis);
operator_list = (MD_ExprOperatorList){0};
// NOTE: Binary-postfix operator conflict
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Binary, 1, plus_node);
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Postfix, 1, plus_node_bis);
op_table = MD_ExprBakeOperatorTableFromList(arena, &operator_list);
MD_Assert(op_table.errors.max_message_kind = MD_MessageKind_Warning && op_table.errors.node_count == 1 &&
op_table.errors.first->node == plus_node_bis);
operator_list = (MD_ExprOperatorList){0};
// NOTE: Same precedence difference associativity conflict
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_Binary, 1, plus_node);
MD_ExprOperatorPush(arena, &operator_list, Op_Addition, MD_ExprOperatorKind_BinaryRightAssociative,
1, minus_node);
op_table = MD_ExprBakeOperatorTableFromList(arena, &operator_list);
MD_Assert(op_table.errors.max_message_kind = MD_MessageKind_Warning && op_table.errors.node_count == 1 &&
op_table.errors.first->node == minus_node);
}
MD_ExprOperatorList operator_list = {0};
for(Op op= Op_Null+1; op < Op_COUNT; ++op){
for(Op op = Op_Null+1; op < Op_COUNT; ++op){
OperatorDescription *desc = operator_array + op;
MD_Node *node = MD_MakeNode(arena, MD_NodeKind_Main, desc->s, desc->s, 0);
MD_ExprOperatorPush(arena, &operator_list, op, desc->op.kind, desc->op.precedence, node);