1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
// This file defines how to compile files
#include "../ast.h"
#include "../config.h"
#include "../environment.h"
#include "../naming.h"
#include "../stdlib/datatypes.h"
#include "../stdlib/paths.h"
#include "../stdlib/tables.h"
#include "../stdlib/text.h"
#include "../typecheck.h"
#include "../types.h"
#include "compilation.h"
static void initialize_vars_and_statics(env_t *env, ast_t *ast);
static void initialize_namespace(env_t *env, const char *name, ast_t *namespace);
static Text_t compile_top_level_code(env_t *env, ast_t *ast);
static Text_t compile_namespace(env_t *env, const char *name, ast_t *namespace);
void initialize_namespace(env_t *env, const char *name, ast_t *namespace) {
initialize_vars_and_statics(namespace_env(env, name), namespace);
}
void initialize_vars_and_statics(env_t *env, ast_t *ast) {
if (!ast) return;
for (ast_list_t *stmt = Match(ast, Block)->statements; stmt; stmt = stmt->next) {
if (stmt->ast->tag == InlineCCode) {
Text_t code = compile_statement(env, stmt->ast);
env->code->staticdefs = Texts(env->code->staticdefs, code, "\n");
} else if (stmt->ast->tag == Declare) {
DeclareMatch(decl, stmt->ast, Declare);
const char *decl_name = Match(decl->var, Var)->name;
Text_t full_name = namespace_name(env, env->namespace, Text$from_str(decl_name));
type_t *t = decl->type ? parse_type_ast(env, decl->type) : get_type(env, decl->value);
if (t->tag == FunctionType) t = Type(ClosureType, t);
Text_t val_code = compile_declared_value(env, stmt->ast);
if ((decl->value && !is_constant(env, decl->value)) || (!decl->value && has_heap_memory(t))) {
Text_t initialized_name = namespace_name(env, env->namespace, Texts(decl_name, "$$initialized"));
env->code->variable_initializers =
Texts(env->code->variable_initializers,
with_source_info(env, stmt->ast,
Texts(full_name, " = ", val_code, ",\n", initialized_name, " = true;\n")));
}
} else if (stmt->ast->tag == StructDef) {
initialize_namespace(env, Match(stmt->ast, StructDef)->name, Match(stmt->ast, StructDef)->namespace);
} else if (stmt->ast->tag == EnumDef) {
initialize_namespace(env, Match(stmt->ast, EnumDef)->name, Match(stmt->ast, EnumDef)->namespace);
} else if (stmt->ast->tag == LangDef) {
initialize_namespace(env, Match(stmt->ast, LangDef)->name, Match(stmt->ast, LangDef)->namespace);
} else if (stmt->ast->tag == Extend) {
initialize_namespace(env, Match(stmt->ast, Extend)->name, Match(stmt->ast, Extend)->body);
} else if (stmt->ast->tag == Use) {
continue;
} else {
Text_t code = compile_statement(env, stmt->ast);
if (code.length > 0) code_err(stmt->ast, "I did not expect this to generate code");
}
}
}
Text_t compile_namespace(env_t *env, const char *name, ast_t *namespace) {
env_t *ns_env = namespace_env(env, name);
return namespace ? compile_top_level_code(ns_env, namespace) : EMPTY_TEXT;
}
Text_t compile_top_level_code(env_t *env, ast_t *ast) {
if (!ast) return EMPTY_TEXT;
switch (ast->tag) {
case Use: {
// DeclareMatch(use, ast, Use);
// if (use->what == USE_C_CODE) {
// Path_t path = Path$relative_to(Path$from_str(use->path),
// Path(".build")); return Texts("#include \"",
// Path$as_c_string(path),
// "\"\n");
// }
return EMPTY_TEXT;
}
case Declare: {
DeclareMatch(decl, ast, Declare);
const char *decl_name = Match(decl->var, Var)->name;
Text_t full_name = namespace_name(env, env->namespace, Text$from_str(decl_name));
type_t *t = decl->type ? parse_type_ast(env, decl->type) : get_type(env, decl->value);
if (t->tag == FunctionType) t = Type(ClosureType, t);
Text_t val_code = compile_declared_value(env, ast);
bool is_private = decl_name[0] == '_';
if ((decl->value && is_constant(env, decl->value)) || (!decl->value && !has_heap_memory(t))) {
set_binding(env, decl_name, t, full_name);
return Texts(is_private ? "static " : "public ", compile_declaration(t, full_name), " = ", val_code, ";\n");
} else {
Text_t init_var = namespace_name(env, env->namespace, Texts(decl_name, "$$initialized"));
Text_t checked_access = Texts("check_initialized(", full_name, ", ", init_var, ", \"", decl_name, "\")");
set_binding(env, decl_name, t, checked_access);
Text_t initialized_name = namespace_name(env, env->namespace, Texts(decl_name, "$$initialized"));
return Texts("static bool ", initialized_name, " = false;\n", is_private ? "static " : "public ",
compile_declaration(t, full_name), ";\n");
}
}
case FunctionDef: {
Text_t name_code =
namespace_name(env, env->namespace, Text$from_str(Match(Match(ast, FunctionDef)->name, Var)->name));
return compile_function(env, name_code, ast, &env->code->staticdefs);
}
case ConvertDef: {
type_t *type = get_function_return_type(env, ast);
const char *name = get_type_name(type);
if (!name)
code_err(ast,
"Conversions are only supported for text, struct, and enum "
"types, not ",
type_to_str(type));
Text_t name_code =
namespace_name(env, env->namespace, Texts(name, "$", get_line_number(ast->file, ast->start)));
return compile_function(env, name_code, ast, &env->code->staticdefs);
}
case StructDef: {
DeclareMatch(def, ast, StructDef);
type_t *t = Table$str_get(*env->types, def->name);
assert(t && t->tag == StructType);
Text_t code = compile_struct_typeinfo(env, t, def->name, def->fields, def->secret, def->opaque);
return Texts(code, compile_namespace(env, def->name, def->namespace));
}
case EnumDef: {
DeclareMatch(def, ast, EnumDef);
Text_t code = compile_enum_typeinfo(env, def->name, def->tags);
code = Texts(code, compile_enum_constructors(env, def->name, def->tags));
return Texts(code, compile_namespace(env, def->name, def->namespace));
}
case LangDef: {
DeclareMatch(def, ast, LangDef);
Text_t code =
Texts("public const TypeInfo_t ", namespace_name(env, env->namespace, Texts(def->name, "$$info")), " = {",
(int64_t)sizeof(Text_t), ", ", (int64_t)__alignof__(Text_t),
", .metamethods=Text$metamethods, .tag=TextInfo, .TextInfo={", quoted_str(def->name), "}};\n");
return Texts(code, compile_namespace(env, def->name, def->namespace));
}
case Extend: {
DeclareMatch(extend, ast, Extend);
binding_t *b = get_binding(env, extend->name);
if (!b || b->type->tag != TypeInfoType)
code_err(ast, "'", extend->name, "' is not the name of any type I recognize.");
env_t *ns_env = Match(b->type, TypeInfoType)->env;
env_t *extended = new (env_t);
*extended = *ns_env;
extended->locals = new (Table_t, .fallback = env->locals);
extended->namespace_bindings = new (Table_t, .fallback = env->namespace_bindings);
extended->id_suffix = env->id_suffix;
return compile_top_level_code(extended, extend->body);
}
case Extern: return EMPTY_TEXT;
case Block: {
Text_t code = EMPTY_TEXT;
for (ast_list_t *stmt = Match(ast, Block)->statements; stmt; stmt = stmt->next) {
code = Texts(code, compile_top_level_code(env, stmt->ast));
}
return code;
}
default: return EMPTY_TEXT;
}
}
typedef struct {
env_t *env;
Text_t *code;
} compile_info_t;
static void add_type_infos(type_ast_t *type_ast, void *userdata) {
if (type_ast && type_ast->tag == EnumTypeAST) {
compile_info_t *info = (compile_info_t *)userdata;
*info->code = Texts(
*info->code,
compile_enum_typeinfo(info->env, String("enum$", (int64_t)(type_ast->start - type_ast->file->text)),
Match(type_ast, EnumTypeAST)->tags),
compile_enum_constructors(info->env, String("enum$", (int64_t)(type_ast->start - type_ast->file->text)),
Match(type_ast, EnumTypeAST)->tags));
}
}
public
Text_t compile_file(env_t *env, ast_t *ast) {
Text_t top_level_code = compile_top_level_code(env, ast);
compile_info_t info = {.env = env, .code = &top_level_code};
type_ast_visit(ast, add_type_infos, &info);
Text_t includes = EMPTY_TEXT;
Text_t use_imports = EMPTY_TEXT;
// First prepare variable initializers to prevent unitialized access:
for (ast_list_t *stmt = Match(ast, Block)->statements; stmt; stmt = stmt->next) {
if (stmt->ast->tag == Use) {
use_imports = Texts(use_imports, compile_statement(env, stmt->ast));
DeclareMatch(use, stmt->ast, Use);
if (use->what == USE_C_CODE) {
Path_t path = Path$relative_to(Path$from_str(use->path), Path(".build"));
includes = Texts(includes, "#include \"", Path$as_c_string(path), "\"\n");
}
}
}
initialize_vars_and_statics(env, ast);
const char *name = file_base_name(ast->file->filename);
return Texts(env->do_source_mapping ? Texts("#line 1 ", quoted_str(ast->file->filename), "\n") : EMPTY_TEXT,
"#define __SOURCE_FILE__ ", quoted_str(ast->file->filename), "\n",
"#include <tomo_" TOMO_VERSION "/tomo.h>\n"
"#include \"",
name, ".tm.h\"\n\n", includes, env->code->local_typedefs, "\n", env->code->lambdas, "\n",
env->code->staticdefs, "\n", top_level_code, "public void ",
namespace_name(env, env->namespace, Text("$initialize")), "(void) {\n",
"static bool initialized = false;\n", "if (initialized) return;\n", "initialized = true;\n",
use_imports, env->code->variable_initializers, "}\n");
}
|
