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Escape special chars in production names for debug graphs

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This commit is contained in:
Max Brunsfeld 2016-02-24 17:23:58 -08:00
parent 597e4b221c
commit 1850951b4f
1 changed files with 13 additions and 2 deletions
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15
src/runtime/stack.c
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@ -519,8 +519,19 @@ size_t ts_stack__write_dot_graph(Stack *self, char *string, size_t n,
for (int j = 0; j < node->successor_count; j++) {
StackLink successor = node->successors[j];
cursor += snprintf(*s, n, "node_%p -> node_%p [label=\"%s\"];\n", node,
successor.node, symbol_names[successor.tree->symbol]);
cursor += snprintf(*s, n, "node_%p -> node_%p [label=\"", node, successor.node);
const char *name = symbol_names[successor.tree->symbol];
for (const char *c = name; *c; c++) {
if (*c == '\"' || *c == '\\') {
**s = '\\';
cursor++;
}
**s = *c;
cursor++;
}
cursor += snprintf(*s, n, "\"];\n");
if (j == 0) {
path->node = successor.node;