diff options
Diffstat (limited to 'src/tree.c')
| -rw-r--r-- | src/tree.c | 43 |
1 files changed, 43 insertions, 0 deletions
@@ -90,6 +90,49 @@ void tree_destroy(tree_t* tree) { free(tree); } +int tree_cmp(tree_t* tree_0, tree_t* tree_1) { + if ((tree_0 && !tree_1) || (!tree_0 && tree_1)) { return 0; } /* Only 1 is defined (failure). */ + if (!tree_0 && !tree_1) { return 1; } /* Both are undefined (success). */ + if (tree_0->type != tree_1->type) { return 0; } /* Types do not match (failure). */ + + switch (tree_0->type) { + case TREE_TYPE_BLOCK: + return tree_cmp(tree_0->data.block.val, tree_1->data.block.val) && + tree_cmp(tree_0->data.block.val, tree_1->data.block.val); + break; + case TREE_TYPE_EXPR: + return tree_cmp(tree_0->data.expr.val, tree_1->data.expr.val); + break; + case TREE_TYPE_LINT: + return tree_0->data.lint.val == tree_1->data.lint.val; + break; + case TREE_TYPE_LSTR: + return strcmp(tree_0->data.lstr.val, tree_1->data.lstr.val) == 0; + break; + case TREE_TYPE_TAG: + return (strcmp(tree_0->data.tag.val, tree_1->data.tag.val) == 0) && + tree_cmp(tree_0->data.tag.nxt, tree_1->data.tag.nxt); + break; + case TREE_TYPE_DARG: + return tree_cmp(tree_0->data.darg.tag, tree_1->data.darg.tag) && + tree_cmp(tree_0->data.darg.nxt, tree_1->data.darg.nxt); + break; + case TREE_TYPE_CARG: + return tree_cmp(tree_0->data.carg.val, tree_1->data.carg.val) && + tree_cmp(tree_0->data.carg.nxt, tree_1->data.carg.nxt); + break; + case TREE_TYPE_DEF: + return tree_cmp(tree_0->data.def.tag, tree_1->data.def.tag) && + tree_cmp(tree_0->data.def.arg, tree_1->data.def.arg) && + tree_cmp(tree_0->data.def.val, tree_1->data.def.val); + break; + case TREE_TYPE_CALL: + return (strcmp(tree_0->data.call.target, tree_1->data.call.target) == 0) && + tree_cmp(tree_0->data.call.arg, tree_1->data.call.arg); + break; + } +} + /* Every time I think there's a problem with the parser, it turns out it's just this stupid tree print function. |