625 lines
14 KiB
C++
625 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 gen_expr(Ast_Expr *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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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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// @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_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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gen_simple_decl_prefix(ast->base); break;
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}break;
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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_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_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 B32
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gen_value(Value a){
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B32 result = true;
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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:
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if(is_pointer(a.type)){
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assert(a.type == type_pointer_to_char);
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gen("\"%s\"", a.intern_val.str);
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} else{
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gen("LIT(\"%s\")", a.intern_val.str);
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}
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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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default: result = false;
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}
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return result;
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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_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_lambda(Intern_String name, Ast_Lambda *lambda){
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gen_simple_decl(lambda->type->func.ret, 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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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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B32 written = gen_value(node->value);
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if(!written) gen("%s", node->value.intern_val.str);
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BREAK();
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}
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CASE(INDEX, Index){
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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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BREAK();
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}
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CASE(LAMBDA_EXPR, Lambda){
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gen_lambda({}, node);
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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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gen_expr(node->left);
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if(!node->type) gen("__");
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else if(node->type->kind == TYPE_POINTER) gen("->");
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else gen(".");
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gen_expr(node->right);
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return;
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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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CASE(COMPOUND, Call){
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gen("(");
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gen_simple_decl(node->type);
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gen(")");
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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_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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if(!is_flag_set(ast->flags, AST_EXPR)) 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(is_flag_set(node->flags, AST_FOREIGN)){
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gen("/*foreign*/");
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}
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gen_lambda(node->name, node->lambda);
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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(TYPE, Decl){
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gen("// Type %s = ", node->name.str);
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gen_expr(node->expr);
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BREAK();
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}
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CASE(ENUM, Decl){
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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(node->scope->decls){
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genln("%s", it->name.str);
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if(it->expr){
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gen(" = ");
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gen_expr(it->expr);
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}
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gen(",");
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}
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global_indent--;
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genln("};*/");
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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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assert(is_pointer(node->type) ? node->type == type_pointer_to_char : 1);
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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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gen("// ");
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gen_lambda(node->name, node->lambda);
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} break;
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invalid_default_case;
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}
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BREAK();
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}
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case AST_MODULE_NAMESPACE:
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CASE(FILE_NAMESPACE, File_Namespace){unused(node); BREAK();}
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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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function void
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parse_file(Ast_File *file){
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Scratch scratch;
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file->filecontent = os_read_file(pctx->perm, file->filename.s);
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assert(file);
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assert(file->filecontent.len);
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assert(file->filename.len);
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pctx->currently_parsed_file = file;
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String name = string_chop_last_period(file->filename.s);
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file->name = pctx->intern(name);
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pctx->currently_parsed_scope = file;
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lex_restream(pctx, file->filecontent, file->filename.s);
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while(token_expect(SAME_SCOPE)){
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if(token_match_pound(pctx->intern("load"_s))){
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parse_load(true);
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continue;
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} else if(token_match_pound(pctx->intern("import"_s))){
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parse_import(true);
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continue;
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}
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Ast_Decl *decl = parse_decl(true);
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if(!decl) break;
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set_flag(decl->flags, AST_GLOBAL);
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if(decl->kind == AST_STRUCT){
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decl->type = type_type;
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decl->type_val = type_incomplete(decl);
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decl->state = DECL_RESOLVED;
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}
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insert_into_scope(file, decl);
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}
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pctx->currently_parsed_scope = 0;
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pctx->currently_parsed_file = 0;
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}
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function void
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insert_builtin_into_scope(Ast_Scope *p, String name, Ast_Type *type){
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Intern_String string = pctx->intern(name);
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Ast_Decl *decl = ast_type(0, string, type);
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decl->parent_scope = p;
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decl->state = DECL_RESOLVED;
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insert_into_scope(p, decl);
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}
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function void
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insert_builtin_types_into_scope(Ast_Scope *p){
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insert_builtin_into_scope(p, "void"_s , type_void);
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insert_builtin_into_scope(p, "Bool"_s , type_bool);
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insert_builtin_into_scope(p, "String"_s, type_string);
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insert_builtin_into_scope(p, "char"_s, type_char);
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insert_builtin_into_scope(p, "int"_s, type_int);
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insert_builtin_into_scope(p, "S8"_s, type_s8);
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insert_builtin_into_scope(p, "S16"_s, type_s16);
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insert_builtin_into_scope(p, "S32"_s, type_s32);
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insert_builtin_into_scope(p, "S64"_s, type_s64);
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insert_builtin_into_scope(p, "U8"_s, type_u8);
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insert_builtin_into_scope(p, "U16"_s, type_u16);
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insert_builtin_into_scope(p, "U32"_s, type_u32);
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insert_builtin_into_scope(p, "U64"_s, type_u64);
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insert_builtin_into_scope(p, "F32"_s, type_f32);
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insert_builtin_into_scope(p, "F64"_s, type_f64);
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}
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global F64 parsing_time_begin;
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global F64 parsing_time_end;
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function void
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parse_files(Ast_Module *module){
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for(S64 i = 0; i < module->all_loaded_files.len; i++){
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auto it = module->all_loaded_files.data[i];
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parse_file(it);
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}
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}
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function void
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parse_all_modules(){
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parsing_time_begin = os_time();
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For(pctx->modules){
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parse_files(it);
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it->implicit_imports.add(pctx->builtins);
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}
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parsing_time_end = os_time();
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}
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function Ast_Module *
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add_module(Intern_String filename){
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For(pctx->modules){
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if(it->name == filename)
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return it;
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}
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Ast_Module *result = ast_module(filename);
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register_ast_file(result->name, result, true);
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pctx->modules.add(result);
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return result;
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}
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global F64 resolving_time_begin;
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global F64 resolving_time_end;
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function void
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resolve_everything_in_module(Ast_Module *module){
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resolving_time_begin = os_time();
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for(S64 i = 0; i < module->all_loaded_files.len; i++){
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Ast_File *it = module->all_loaded_files[i];
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For_Named(it->decls, jt){
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resolve_name(it, jt->pos, jt->name);
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if(jt->kind == AST_STRUCT){
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type_complete(jt->type);
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}
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}
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}
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resolving_time_end = os_time();
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}
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function void
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begin_compilation(){
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OS_Heap *heap = exp_alloc_type(&pernament_arena, OS_Heap);
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*heap = win32_os_heap_create(false, mib(16), 0);
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Parse_Ctx *ctx = exp_alloc_type(&pernament_arena, Parse_Ctx);
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parse_init(ctx, &pernament_arena, heap);
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}
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global F64 generating_time_begin;
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global F64 generating_time_end;
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function String
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end_compilation(){
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generating_time_begin = os_time();
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For(pctx->ordered_decls){
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genln("");
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gen_ast(it);
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}
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exp_destroy(pctx->heap);
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String string_result = string_flatten(pctx->perm, &pctx->gen);
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generating_time_end = os_time();
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return string_result;
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}
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#if 0
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|
|
|
F64 parse_end = os_time();
|
|
|
|
For(pctx->packages){
|
|
resolve_package(it);
|
|
}
|
|
|
|
#if 0
|
|
gen(R"==(
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
typedef int8_t S8;
|
|
typedef int16_t S16;
|
|
typedef int32_t S32;
|
|
typedef int64_t S64;
|
|
typedef uint8_t U8;
|
|
typedef uint16_t U16;
|
|
typedef uint32_t U32;
|
|
typedef uint64_t U64;
|
|
typedef S8 B8;
|
|
typedef S16 B16;
|
|
typedef S32 B32;
|
|
typedef S64 B64;
|
|
typedef U64 SizeU;
|
|
typedef S64 SizeS;
|
|
typedef float F32;
|
|
typedef double F64;
|
|
typedef S32 Bool;
|
|
|
|
typedef struct Slice{
|
|
S64 len;
|
|
void *data;
|
|
}Slice;
|
|
|
|
typedef struct String{
|
|
U8 *str;
|
|
S64 len;
|
|
}String;
|
|
#define LIT(x) (String){.str=(U8 *)x, .len=sizeof(x)-1}
|
|
|
|
void entry();
|
|
int main(){
|
|
entry();
|
|
}
|
|
)==");
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
#endif
|