add -fdump-analysis to dump type information to json

This commit adds -fdump-analysis which creates
a `$NAME-analysis.json` file with all of the finished
semantic analysis that the stage1 compiler produced.
It contains types, packages, declarations, and files.

This is an initial implementation; some data will be
missing. However it's easy to improve the implementation,
which is in `src/dump_analysis.cpp`.

The next step for #21 will be to create Zig code which parses
this json file and creates user-facing HTML documentation.

This feature has other uses, however; for example, it could
be used for IDE integration features until the self-hosted
compiler is available.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/analyze.cpp b/src/analyze.cpp
index 1282126fbc..cca239c275 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -7303,6 +7303,22 @@ bool type_ptr_eql(const ZigType *a, const ZigType *b) {
     return a == b;
 }
 
+uint32_t pkg_ptr_hash(const ZigPackage *ptr) {
+    return hash_ptr((void*)ptr);
+}
+
+bool pkg_ptr_eql(const ZigPackage *a, const ZigPackage *b) {
+    return a == b;
+}
+
+uint32_t tld_ptr_hash(const Tld *ptr) {
+    return hash_ptr((void*)ptr);
+}
+
+bool tld_ptr_eql(const Tld *a, const Tld *b) {
+    return a == b;
+}
+
 ConstExprValue *get_builtin_value(CodeGen *codegen, const char *name) {
     Tld *tld = get_container_scope(codegen->compile_var_import)->decl_table.get(buf_create_from_str(name));
     resolve_top_level_decl(codegen, tld, nullptr, false);