594 lines
14 KiB
C++
594 lines
14 KiB
C++
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#define gen(...) pctx->gen.addf(__VA_ARGS__)
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#define genln(...) do{gen("\n"); gen_indent(); gen(__VA_ARGS__); }while(0)
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global S32 global_indent;
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global S32 is_inside_struct;
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function void gen_ast(Ast *ast);
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function void
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gen_indent(){
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for(S32 i = 0; i < global_indent; i++) gen(" ");
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}
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// @todo: Gen complicated decl
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//array 10 ( pointer (pointer array 5 int a))
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// int (*(*(a[5])))[10]
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//
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// 1 Get to the bottom
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// 2 Add variable name
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// 3 Going backwards add arrays and pointers in parens
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// 4 Add type name on the left side
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function void
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gen_simple_decl_prefix(Ast_Resolved_Type *ast){
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switch(ast->kind){
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case TYPE_POINTER: gen_simple_decl_prefix(ast->base); gen("*"); break;
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case TYPE_ARRAY: gen_simple_decl_prefix(ast->base); break;
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case TYPE_LAMBDA:break;
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case TYPE_ENUM:
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case TYPE_STRUCT: {
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auto constant = (Ast_Decl *)ast->ast;
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auto name = constant->name;
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gen("%s ", name.str);
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}break;
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default: gen("%s ", name(ast));
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}
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}
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function void
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gen_simple_decl_postfix(Ast_Resolved_Type *ast){
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switch(ast->kind){
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case TYPE_POINTER: gen_simple_decl_postfix(ast->base); break;
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case TYPE_ARRAY:
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gen("[");
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if(ast->arr.size != ARRAY_SIZE_INFERRED)
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gen("%d", (int)ast->arr.size);
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gen("]");
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gen_simple_decl_postfix(ast->arr.base); break;
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case TYPE_LAMBDA:break;
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case TYPE_ENUM: case TYPE_STRUCT:break;
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default: name(ast);
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}
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}
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function void
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gen_simple_decl(Ast_Resolved_Type *ast, Intern_String name){
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if(ast->kind == TYPE_LAMBDA) {
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gen_simple_decl_prefix(ast->func.ret);
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gen("(*%s)(", name.str);
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For(ast->func.args){
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gen_simple_decl_prefix(it);
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if(&it != ast->func.args.end() - 1) gen(", ");
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}
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gen(")");
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}
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else{
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gen_simple_decl_prefix(ast);
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if(name.len) {
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gen("%s", name.str);
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}
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gen_simple_decl_postfix(ast);
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}
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}
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function void
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gen_value(Value a){
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switch(a.type->kind){
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CASE_INT: {
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Scratch scratch;
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const char *string = bigint_to_error_string(scratch, &a.big_int_val, 10);
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gen("%s", string);
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}break;
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CASE_STRING: gen("LIT(\"%s\")", a.intern_val.str); break;
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CASE_BOOL: a.bool_val ? gen("true"):gen("false"); break;
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CASE_FLOAT: gen("%f", a.f64_val); break;
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invalid_default_case;
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}
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}
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function void
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gen_expr(Ast_Expr *ast){
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switch(ast->kind){
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CASE(IDENT, Atom){
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gen("%s", node->intern_val.str);
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BREAK();
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}
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CASE(VALUE, Atom){
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gen_value(node->value);
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BREAK();
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}
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// CASE(INDEX, Index){
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// Sym *sym = resolved_get(node);
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// if(is_array(sym->type)){
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// gen("(");
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// gen("(");
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// gen("(");
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// gen_simple_decl(sym->type->arr.base, {});
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// gen("*)");
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// gen_expr(node->expr);
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// gen(".data)");
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// gen("[");
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// gen_expr(node->index);
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// gen("]");
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// gen(")");
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// } else{
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// gen("(");
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// gen_expr(node->expr);
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// gen("[");
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// gen_expr(node->index);
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// gen("]");
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// gen(")");
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// }
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// BREAK();
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// }
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CASE(BINARY, Binary){
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// if(node->op == TK_Dot){
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// Sym *sym = resolved_get(node->left);
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// gen_expr(node->left);
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// if(sym->type->kind == TYPE_POINTER) gen("->");
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// else gen(".");
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// gen_expr(node->right);
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// }
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// else if(node->op == TK_ColonAssign){
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// Sym *sym = resolved_get(node);
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// Ast_Atom *atom = (Ast_Atom *)node->left;
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// assert(is_atom(atom));
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// gen_simple_decl(sym->type, atom->intern_val);
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// if(node->right){
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// gen(" = ");
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// gen_expr(node->right);
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// }
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// }
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if(!token_is_assign(node->op)) gen("(");
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gen_expr(node->left);
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gen("%s", name(node->op));
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gen_expr(node->right);
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if(!token_is_assign(node->op)) gen(")");
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BREAK();
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}
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CASE(UNARY, Unary){
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gen("(");
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if(node->op != TK_PostIncrement && node->op != TK_PostDecrement) gen("%s", name(node->op));
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gen_expr(node->expr);
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if(node->op == TK_PostIncrement || node->op == TK_PostDecrement) gen("%s", name(node->op));
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gen(")");
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BREAK();
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}
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CASE(CAST, Cast){
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gen("(");
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gen("(");
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gen_simple_decl(node->after_type, {});
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gen(")");
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gen_expr(node->expr);
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gen(")");
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BREAK();
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}
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CASE(VAR, Decl){
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gen_ast(node);
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BREAK();
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}
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CASE(CALL, Call){
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gen_expr(node->name);
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gen("(");
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For(node->exprs){
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gen_expr(it->item);
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if(!node->exprs.is_last(&it)) gen(", ");
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}
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gen(")");
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BREAK();
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}
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invalid_default_case;
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}
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}
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function void
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gen_line(Ast *node){
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if(emit_line_directives)
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genln("#line %d", node->pos->line+1);
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}
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function void
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gen_stmt_scope(Ast_Scope *scope){
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gen("{");
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global_indent++;
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For(scope->stmts) {
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gen_line(it);
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genln("");
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gen_ast(it);
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}
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global_indent--;
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genln("}");
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}
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enum {
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ALWAYS_EMIT_VALUE = 0,
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DONT_EMIT_VALUE = 1,
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};
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function void
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gen_var(Intern_String name, Ast_Resolved_Type *type, Ast_Expr *expr, B32 emit_value){
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gen_simple_decl(type, name);
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if(emit_value == DONT_EMIT_VALUE){
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return;
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}
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if(expr){
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gen(" = ");
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gen_expr(expr);
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} else { // Default zero
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if(is_numeric(type)){
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gen(" = 0");
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} else {
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gen(" = {}");
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}
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}
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}
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function void
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gen_ast(Ast *ast){
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switch(ast->kind){
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CASE(RETURN, Return){
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gen("return");
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if(node->expr){
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gen(" ");
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gen_expr(node->expr);
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}
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gen(";");
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BREAK();
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}
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CASE(VAR, Decl){
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gen_var(node->name, node->type, node->expr, is_inside_struct ? DONT_EMIT_VALUE : ALWAYS_EMIT_VALUE);
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gen(";");
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BREAK();
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}
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CASE(IF, If){
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For(node->ifs){
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if(it->init) gen_expr(it->init);
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if(node->ifs.is_first(&it)){
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gen("if(");
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gen_expr(it->expr);
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gen(")");
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gen_stmt_scope(it->scope);
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}
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else{
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genln("else");
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if(it->expr){
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gen(" if(");
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gen_expr(it->expr);
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gen(")");
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}
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gen_stmt_scope(it->scope);
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}
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}
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BREAK();
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}
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CASE(PASS, Pass){
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unused(node);
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gen("//pass");
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BREAK();
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}
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CASE(BINARY,Binary){
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gen_expr(node);
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gen(";");
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BREAK();
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}
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CASE(FOR, For){
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gen("for(");
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if(node->init) gen_expr(node->init);
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gen(";");
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if(node->cond) gen_expr(node->cond);
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gen(";");
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if(node->iter) gen_expr(node->iter);
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gen(")");
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gen_stmt_scope(node->scope);
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BREAK();
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}
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CASE(LAMBDA, Decl){
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if(node->kind == AST_LAMBDA){
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if(is_flag_set(node->flags, AST_FOREIGN)){
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return;
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}
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Ast_Lambda *lambda = node->lambda;
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Ast_Resolved_Type *ret = node->type->func.ret;
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gen_simple_decl(ret, node->name);
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gen("(");
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For(lambda->args){
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gen_var(it->name, it->type, 0, DONT_EMIT_VALUE);
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if(&it != (lambda->args.end() - 1)) gen(", ");
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}
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gen(")");
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if(lambda->scope) {
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gen_stmt_scope(lambda->scope);
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}
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else gen(";");
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}
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else{
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gen_simple_decl(node->type, node->name);
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gen(" = ");
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gen_expr((Ast_Expr *)node->expr);
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gen(";");
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}
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BREAK();
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}
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CASE(STRUCT, Decl){
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gen("typedef struct %s{", node->name.str);
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global_indent++;
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is_inside_struct++;
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For(node->scope->decls){
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genln("");
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gen_ast(it);
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}
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is_inside_struct--;
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global_indent--;
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genln("}%s;", node->name.str);
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BREAK();
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}
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CASE(CONST, Decl){
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switch(node->type->kind){
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CASE_FLOAT:{
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gen("// F64 %s = ", node->name.str);
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gen_value(node->value);
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} break;
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CASE_INT:{
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gen("// constant int %s = ", node->name.str);
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gen_value(node->value);
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}break;
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CASE_STRING:{
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gen("// const String %s = ", node->name.str);
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gen_value(node->value);
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}break;
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CASE_BOOL:{
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gen("// const Bool %s = ", node->name.str);
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gen_value(node->value);
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}break;
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case TYPE_LAMBDA:{
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}break;
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case TYPE_TYPE:{
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}break;
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// if(sym->type_val->kind == TYPE_STRUCT){
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// Ast_Struct *agg = (Ast_Struct *)sym->type_val->ast;
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// if(node->value->kind == AST_STRUCT){
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// gen("typedef struct %s{", node->name.str);
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// global_indent++;
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// is_inside_struct++;
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// For(agg->members){
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// genln("");
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// gen_ast(it);
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// }
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// For(agg->const_members){
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// genln("");
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// gen_ast(it);
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// }
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// is_inside_struct--;
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// global_indent--;
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// genln("}%s;", node->name.str);
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// }
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// else{
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// // Type alias
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// }
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// }
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// else if(sym->type_val->kind == TYPE_ENUM){
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// Ast_Enum *enu = (Ast_Enum *)sym->type_val->ast;
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// assert(enu->kind == AST_ENUM);
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// if(node->value->kind == AST_ENUM){
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// gen("/*enum %s{", node->name.str);
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// // @todo add typespec
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// global_indent++;
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// For(enu->members){
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// genln("%s", it->name.str);
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// gen(" = ");
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// Sym *value_sym = resolved_get(it);
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// gen("%d", bigint_as_signed(&value_sym->big_int_val));
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// gen(",");
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// }
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// global_indent--;
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// genln("};*/");
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// }
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// else{
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// // Type alias
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// }
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// }
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// else{
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// gen("// typedef ");
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// gen_simple_decl(sym->type_val, node->name);
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// gen(";");
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// }
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// }break;
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default: compiler_error(node->pos, "C_Codegen: Unhandled type %s of constant expression", docname(node->type));
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}
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BREAK();
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}
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default: {
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assert(is_flag_set(ast->flags, AST_EXPR));
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gen_expr((Ast_Expr *)ast);
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gen(";");
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}
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}
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}
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#if 0
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function String
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compile_string(String filecontent, String filename = "default_name"_s){
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F64 total_time = os_time();
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Scratch scratch(thread_ctx.scratch);
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OS_Heap heap = win32_os_heap_create(false, mib(4), 0);
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Parse_Ctx ctx = {};
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parse_init(&ctx, scratch, &heap);
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F64 tokenize_begin = os_time();
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lex_restream(&ctx, filecontent, filename);
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F64 tokenize_end = os_time();
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F64 parse_begin = os_time();
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Ast_Package *result = parse_file();
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sym_insert_builtins();
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pctx->resolving_package = result;
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F64 parse_end = os_time();
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gen(R"==(
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#include <stdint.h>
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#include <stdio.h>
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#include <math.h>
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typedef int8_t S8;
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typedef int16_t S16;
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typedef int32_t S32;
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typedef int64_t S64;
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typedef uint8_t U8;
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typedef uint16_t U16;
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typedef uint32_t U32;
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typedef uint64_t U64;
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typedef S8 B8;
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typedef S16 B16;
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typedef S32 B32;
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typedef S64 B64;
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typedef U64 SizeU;
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typedef S64 SizeS;
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typedef float F32;
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typedef double F64;
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typedef S32 Bool;
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typedef struct Slice{
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S64 len;
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void *data;
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}Slice;
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typedef struct String{
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U8 *str;
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S64 len;
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}String;
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#define LIT(x) (String){.str=(U8 *)x, .len=sizeof(x)-1}
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void entry();
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int main(){
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entry();
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}
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)==");
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F64 resolve_begin = os_time();
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resolve_package(result);
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F64 resolve_end = os_time();
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F64 codegen_begin = os_time();
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gen_ast(result);
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F64 codegen_end = os_time();
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exp_destroy(&heap);
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F64 flattening_begin = os_time();
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String string_result = string_flatten(scratch, &pctx->gen);
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F64 flattening_end = os_time();
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printf("\n//-------------------------------");
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printf("\n// Tokenization: %f", tokenize_end - tokenize_begin);
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printf("\n// Parsing : %f", parse_end - parse_begin);
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printf("\n// Resolving : %f", resolve_end - resolve_begin);
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printf("\n// Codegen : %f", codegen_end - codegen_begin);
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printf("\n// Flattening : %f", flattening_end - flattening_begin);
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printf("\n// Total : %f", flattening_end - total_time);
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printf("\n//-------------------------------");
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return string_result;
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}
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function String
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compile_file(String filename){
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Scratch scratch;
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String filecontent = os_read_file(scratch, filename);
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assert(filecontent.len);
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String result = compile_string(filecontent, filename);
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return result;
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}
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#endif
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function String
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compile_files(Array<String> filename){
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Scratch scratch(thread_ctx.scratch);
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Array<Ast_File> files = {scratch};
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For(filename){
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String filecontent = os_read_file(scratch, it);
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assert(filecontent.len);
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files.add(ast_file(it, filecontent));
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}
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F64 total_time = os_time();
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OS_Heap heap = win32_os_heap_create(false, mib(16), 0);
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Parse_Ctx ctx = {};
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parse_init(&ctx, scratch, &heap);
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F64 parse_begin = os_time();
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Array<Ast_Package> packages = {&heap};
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For(files){
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parse_file(&it);
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Ast_Package *package = find_package(it.name, &packages);
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if(package){
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package->decls.add(it.decls);
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} else {
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Ast_Package p = ast_package(&heap, it.name, it.decls);
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insert_builtin_types_into_package(&p);
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packages.add(p);
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}
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}
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F64 parse_end = os_time();
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For(packages){
|
|
resolve_package(&it);
|
|
}
|
|
|
|
For(pctx->ordered_decls){
|
|
genln("");
|
|
gen_ast(it);
|
|
}
|
|
|
|
exp_destroy(&heap);
|
|
|
|
|
|
F64 flattening_begin = os_time();
|
|
String string_result = string_flatten(scratch, &pctx->gen);
|
|
F64 flattening_end = os_time();
|
|
|
|
printf("\n//-------------------------------");
|
|
printf("\n// Parse : %f", parse_end - parse_begin);
|
|
printf("\n// Flattening : %f", flattening_end - flattening_begin);
|
|
printf("\n// Total : %f", flattening_end - total_time);
|
|
printf("\n//-------------------------------");
|
|
|
|
return string_result;
|
|
}
|