67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
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function Register_Index
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bc_emit_expr(Bc *b, Ast *ast){
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if(!ast) return -1;
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if(!is_flag_set(ast->flags, AST_EXPR))
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compiler_error(ast->pos, "Internal compiler error: Trying to emit expression but it doesn't have appropriate flag");
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switch(ast->kind){
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// @todo pass type and figure out what to do with untyped ??
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CASE(VALUE, Atom){
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Register_Index dst = allocate_register(b);
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switch(node->type->kind){
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CASE_UINT: emit_load_constant_u64(b, dst, bigint_as_unsigned(&node->big_int_val)); break;
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CASE_SINT: emit_load_constant_s64(b, dst, bigint_as_signed(&node->big_int_val)); break;
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CASE_FLOAT: emit_load_constant_f64(b, dst, node->f64_val); break;
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invalid_default_case;
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}
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return dst;
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BREAK();
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}
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CASE(BINARY, Binary){
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Register_Index left = bc_emit_expr(b, node->left);
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Register_Index right = bc_emit_expr(b, node->right);
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emit_arithmetic(b, BC_ADD_S64, left, right, left);
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release_register(b, right);
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return left;
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BREAK();
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}
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default:{}
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}
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return -1;
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}
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function void
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compile_to_bc(){
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Bc bc = create_bytecode_interp();
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Bc *b = &bc;
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For_Named(pctx->ordered_decls, ast){
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switch(ast->kind){
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CASE(LAMBDA, Decl){
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// node->bytecode_data_position = emit_lambda();
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BREAK();
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}
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CASE(VAR, Decl){
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node->bytecode_data_position = exp_alloc(&b->memory, node->type->size, AF_ZeroMemory);
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if(node->expr){
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Register_Index expression_index = bc_emit_expr(b, node->expr);
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Register_Index address_index = allocate_register(b);
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emit_load_constant_address(b, address_index, node->bytecode_data_position);
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emit_memory(b, BC_STORE_TO_MEMORY64, address_index, expression_index);
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release_register(b, expression_index);
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release_register(b, address_index);
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}
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BREAK();
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}
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default: {}
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}
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}
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emit_end(b);
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run_bytecode_interp(b);
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destroy_bytecode_interp(b);
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} |