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add -fdump-analysis to dump type information to json

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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.
This commit is contained in:
Andrew Kelley
2019-10-03 17:58:22 -04:00
parent 7640bec8e0
commit 59ac7b91da
10 changed files with 829 additions and 131 deletions
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29
src/codegen.cpp
View File

@@ -20,6 +20,7 @@
#include "util.hpp"
#include "zig_llvm.h"
#include "userland.h"
#include "dump_analysis.hpp"
#include <stdio.h>
#include <errno.h>
@@ -1724,7 +1725,7 @@ static LLVMValueRef ir_llvm_value(CodeGen *g, IrInstruction *instruction) {
}
ATTRIBUTE_NORETURN
static void report_errors_and_exit(CodeGen *g) {
void codegen_report_errors_and_exit(CodeGen *g) {
assert(g->errors.length != 0);
for (size_t i = 0; i < g->errors.length; i += 1) {
ErrorMsg *err = g->errors.at(i);
@@ -1735,7 +1736,7 @@ static void report_errors_and_exit(CodeGen *g) {
static void report_errors_and_maybe_exit(CodeGen *g) {
if (g->errors.length != 0) {
report_errors_and_exit(g);
codegen_report_errors_and_exit(g);
}
}
@@ -1745,7 +1746,7 @@ static void give_up_with_c_abi_error(CodeGen *g, AstNode *source_node) {
buf_sprintf("TODO: support C ABI for more targets. https://github.com/ziglang/zig/issues/1481"));
add_error_note(g, msg, source_node,
buf_sprintf("pointers, integers, floats, bools, and enums work on all targets"));
report_errors_and_exit(g);
codegen_report_errors_and_exit(g);
}
static LLVMValueRef build_alloca(CodeGen *g, ZigType *type_entry, const char *name, uint32_t alignment) {
@@ -3456,7 +3457,7 @@ static bool value_is_all_undef(CodeGen *g, ConstExprValue *const_val) {
Error err;
if (const_val->special == ConstValSpecialLazy &&
(err = ir_resolve_lazy(g, nullptr, const_val)))
report_errors_and_exit(g);
codegen_report_errors_and_exit(g);
switch (const_val->special) {
case ConstValSpecialLazy:
@@ -4253,7 +4254,7 @@ static LLVMValueRef ir_render_struct_field_ptr(CodeGen *g, IrExecutable *executa
ZigType *struct_type = (struct_ptr_type->id == ZigTypeIdPointer) ?
struct_ptr_type->data.pointer.child_type : struct_ptr_type;
if ((err = type_resolve(g, struct_type, ResolveStatusLLVMFull)))
report_errors_and_exit(g);
codegen_report_errors_and_exit(g);
assert(field->gen_index != SIZE_MAX);
return LLVMBuildStructGEP(g->builder, struct_ptr, (unsigned)field->gen_index, "");
@@ -6625,7 +6626,7 @@ static LLVMValueRef gen_const_val(CodeGen *g, ConstExprValue *const_val, const c
check: switch (const_val->special) {
case ConstValSpecialLazy:
if ((err = ir_resolve_lazy(g, nullptr, const_val))) {
report_errors_and_exit(g);
codegen_report_errors_and_exit(g);
}
goto check;
case ConstValSpecialRuntime:
@@ -10157,6 +10158,7 @@ static Error check_cache(CodeGen *g, Buf *manifest_dir, Buf *digest) {
cache_bool(ch, g->have_stack_probing);
cache_bool(ch, g->is_dummy_so);
cache_bool(ch, g->function_sections);
cache_bool(ch, g->enable_dump_analysis);
cache_buf_opt(ch, g->mmacosx_version_min);
cache_buf_opt(ch, g->mios_version_min);
cache_usize(ch, g->version_major);
@@ -10338,6 +10340,21 @@ void codegen_build_and_link(CodeGen *g) {
gen_h_file(g);
}
}
if (g->enable_dump_analysis) {
const char *analysis_json_filename = buf_ptr(buf_sprintf("%s" OS_SEP "%s-analysis.json",
buf_ptr(g->output_dir), buf_ptr(g->root_out_name)));
FILE *f = fopen(analysis_json_filename, "wb");
if (f == nullptr) {
fprintf(stderr, "Unable to open '%s': %s\n", analysis_json_filename, strerror(errno));
exit(1);
}
zig_print_analysis_dump(g, f);
if (fclose(f) != 0) {
fprintf(stderr, "Unable to write '%s': %s\n", analysis_json_filename, strerror(errno));
exit(1);
}
}
// If we're outputting assembly or llvm IR we skip linking.
// If we're making a library or executable we must link.