X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=parser.c;h=422930d0d8d1ca7612caee58af4e41ac92f2665a;hp=fb4f8671f3534cbe658ba13e3bbc8e4e04cb96fc;hb=5cfd97c344b5a3d90409cd0ba04b410b2cdd25b8;hpb=2f5a26a4de1b8fdb8876f5b1efc34ec52127cdec diff --git a/parser.c b/parser.c index fb4f867..422930d 100644 --- a/parser.c +++ b/parser.c @@ -26,14 +26,13 @@ #include "gmqcc.h" #include "lexer.h" -#define PARSER_HT_FIELDS 0 -#define PARSER_HT_GLOBALS 1 /* beginning of locals */ #define PARSER_HT_LOCALS 2 #define PARSER_HT_SIZE 1024 #define TYPEDEF_HT_SIZE 16 +enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 }; typedef struct { lex_file *lex; int tok; @@ -75,8 +74,7 @@ typedef struct { size_t *_blocklocals; ast_value **_typedefs; size_t *_blocktypedefs; - - size_t errors; + lex_ctx *_block_ctx; /* we store the '=' operator info */ const oper_info *assign_op; @@ -86,72 +84,58 @@ typedef struct { * anything else: type error */ qcint memberof; + + /* Keep track of our ternary vs parenthesis nesting state. + * If we reach a 'comma' operator in a ternary without a paren, + * we shall trigger -Wternary-precedence. + */ + enum parser_pot *pot; + + /* pragma flags */ + bool noref; } parser_t; -#define CV_NONE 0 -#define CV_CONST 1 -#define CV_VAR -1 +static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10; static void parser_enterblock(parser_t *parser); static bool parser_leaveblock(parser_t *parser); static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e); static bool parse_typedef(parser_t *parser); -static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int is_const_var, ast_value *cached_typedef); -static ast_block* parse_block(parser_t *parser, bool warnreturn); -static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn); -static ast_expression* parse_statement_or_block(parser_t *parser); +static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static); +static ast_block* parse_block(parser_t *parser); +static bool parse_block_into(parser_t *parser, ast_block *block); +static bool parse_statement_or_block(parser_t *parser, ast_expression **out); static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases); static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma); static ast_expression* parse_expression(parser_t *parser, bool stopatcomma); static void parseerror(parser_t *parser, const char *fmt, ...) { - va_list ap; - - parser->errors++; - - va_start(ap, fmt); - con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap); - va_end(ap); + va_list ap; + va_start(ap, fmt); + vcompile_error(parser->lex->tok.ctx, fmt, ap); + va_end(ap); } /* returns true if it counts as an error */ static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...) { - va_list ap; - int lvl = LVL_WARNING; - - if (!OPTS_WARN(warntype)) - return false; - - if (opts_werror) { - parser->errors++; - lvl = LVL_ERROR; - } - - va_start(ap, fmt); - con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap); - va_end(ap); - - return opts_werror; + bool r; + va_list ap; + va_start(ap, fmt); + r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap); + va_end(ap); + return r; } static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...) { - va_list ap; - int lvl = LVL_WARNING; - - if (!OPTS_WARN(warntype)) - return false; - - if (opts_werror) - lvl = LVL_ERROR; - - va_start(ap, fmt); - con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap); - va_end(ap); - - return opts_werror; + bool r; + va_list ap; + va_start(ap, fmt); + r = vcompile_warning(ctx, warntype, fmt, ap); + va_end(ap); + return r; } /********************************************************************** @@ -221,7 +205,7 @@ static ast_value* parser_const_float(parser_t *parser, double d) return parser->imm_float[i]; } out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT); - out->constant = true; + out->cvq = CV_CONST; out->hasvalue = true; out->constval.vfloat = d; vec_push(parser->imm_float, out); @@ -246,7 +230,7 @@ static char *parser_strdup(const char *str) { if (str && !*str) { /* actually dup empty strings */ - char *out = mem_a(1); + char *out = (char*)mem_a(1); *out = 0; return out; } @@ -267,7 +251,7 @@ static ast_value* parser_const_string(parser_t *parser, const char *str, bool do out = ast_value_new(parser_ctx(parser), name, TYPE_STRING); } else out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING); - out->constant = true; + out->cvq = CV_CONST; out->hasvalue = true; out->constval.vstring = parser_strdup(str); vec_push(parser->imm_string, out); @@ -283,7 +267,7 @@ static ast_value* parser_const_vector(parser_t *parser, vector v) return parser->imm_vector[i]; } out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR); - out->constant = true; + out->cvq = CV_CONST; out->hasvalue = true; out->constval.vvec = v; vec_push(parser->imm_vector, out); @@ -308,12 +292,12 @@ static ast_value* parser_const_vector_0(parser_t *parser) static ast_expression* parser_find_field(parser_t *parser, const char *name) { - return util_htget(parser->htfields, name); + return ( ast_expression*)util_htget(parser->htfields, name); } static ast_expression* parser_find_global(parser_t *parser, const char *name) { - return util_htget(parser->htglobals, name); + return (ast_expression*)util_htget(parser->htglobals, name); } static ast_expression* parser_find_param(parser_t *parser, const char *name) @@ -340,7 +324,7 @@ static ast_expression* parser_find_local(parser_t *parser, const char *name, siz *isparam = false; for (i = vec_size(parser->variables); i > upto;) { --i; - if ( (e = util_htgeth(parser->variables[i], name, hash)) ) + if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) ) return e; } *isparam = true; @@ -388,6 +372,7 @@ typedef struct #define SY_PAREN_EXPR '(' #define SY_PAREN_FUNC 'f' #define SY_PAREN_INDEX '[' +#define SY_PAREN_TERNARY '?' static sy_elem syexp(lex_ctx ctx, ast_expression *v) { sy_elem e; @@ -477,7 +462,33 @@ static bool rotate_entfield_array_index_nodes(ast_expression **out) return true; } -static bool parser_sy_pop(parser_t *parser, shunt *sy) +static bool immediate_is_true(lex_ctx ctx, ast_value *v) +{ + switch (v->expression.vtype) { + case TYPE_FLOAT: + return !!v->constval.vfloat; + case TYPE_INTEGER: + return !!v->constval.vint; + case TYPE_VECTOR: + if (OPTS_FLAG(CORRECT_LOGIC)) + return v->constval.vvec.x && + v->constval.vvec.y && + v->constval.vvec.z; + else + return !!(v->constval.vvec.x); + case TYPE_STRING: + if (!v->constval.vstring) + return false; + if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS)) + return true; + return !!v->constval.vstring[0]; + default: + compile_error(ctx, "internal error: immediate_is_true on invalid type"); + return !!v->constval.vfunc; + } +} + +static bool parser_sy_apply_operator(parser_t *parser, shunt *sy) { const oper_info *op; lex_ctx ctx; @@ -485,6 +496,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) ast_expression *exprs[3]; ast_block *blocks[3]; ast_value *asvalue[3]; + ast_binstore *asbinstore; size_t i, assignop, addop, subop; qcint generated_op = 0; @@ -514,6 +526,10 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) vec_shrinkby(sy->ops, 1); + /* op(:?) has no input and no output */ + if (!op->operands) + return true; + vec_shrinkby(sy->out, op->operands); for (i = 0; i < op->operands; ++i) { exprs[i] = sy->out[vec_size(sy->out)+i].out; @@ -530,7 +546,8 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \ exprs[0]->expression.vtype != T) #define CanConstFold1(A) \ - (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && ((ast_value*)(A))->constant) + (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\ + (A)->expression.vtype != TYPE_FUNCTION) #define CanConstFold(A, B) \ (CanConstFold1(A) && CanConstFold1(B)) #define ConstV(i) (asvalue[(i)]->constval.vvec) @@ -577,22 +594,29 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]); if (rotate_entfield_array_index_nodes(&out)) { - if (opts_standard != COMPILER_GMQCC) { +#if 0 + /* This is not broken in fteqcc anymore */ + if (opts.standard != COMPILER_GMQCC) { /* this error doesn't need to make us bail out */ (void)!parsewarning(parser, WARN_EXTENSIONS, "accessing array-field members of an entity without parenthesis\n" " -> this is an extension from -std=gmqcc"); } +#endif } break; case opid1(','): if (blocks[0]) { - ast_block_add_expr(blocks[0], exprs[1]); + if (!ast_block_add_expr(blocks[0], exprs[1])) + return false; } else { blocks[0] = ast_block_new(ctx); - ast_block_add_expr(blocks[0], exprs[0]); - ast_block_add_expr(blocks[0], exprs[1]); + if (!ast_block_add_expr(blocks[0], exprs[0]) || + !ast_block_add_expr(blocks[0], exprs[1])) + { + return false; + } } if (!ast_block_set_type(blocks[0], exprs[1])) return false; @@ -645,10 +669,17 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]); break; case TYPE_STRING: - if (CanConstFold1(exprs[0])) - out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0)); - else - out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]); + if (CanConstFold1(exprs[0])) { + if (OPTS_FLAG(TRUE_EMPTY_STRINGS)) + out = (ast_expression*)parser_const_float(parser, !ConstS(0)); + else + out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0)); + } else { + if (OPTS_FLAG(TRUE_EMPTY_STRINGS)) + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]); + else + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]); + } break; /* we don't constant-fold NOT for these types */ case TYPE_ENTITY: @@ -834,20 +865,65 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) return false; } #endif - if (opts_standard == COMPILER_GMQCC) - con_out("TODO: early out logic\n"); if (CanConstFold(exprs[0], exprs[1])) - out = (ast_expression*)parser_const_float(parser, - (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1)))); + { + if (OPTS_FLAG(PERL_LOGIC)) { + if (immediate_is_true(ctx, asvalue[0])) + out = exprs[1]; + } + else + out = (ast_expression*)parser_const_float(parser, + ( (generated_op == INSTR_OR) + ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1])) + : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) ) + ? 0 : 1); + } else + { + if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + ast_type_to_string(exprs[1], ty2, sizeof(ty2)); + parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2); + return false; + } + for (i = 0; i < 2; ++i) { + if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) { + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]); + if (!out) break; + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out); + if (!out) break; + exprs[i] = out; out = NULL; + if (OPTS_FLAG(PERL_LOGIC)) { + /* here we want to keep the right expressions' type */ + break; + } + } + else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) { + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]); + if (!out) break; + out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out); + if (!out) break; + exprs[i] = out; out = NULL; + if (OPTS_FLAG(PERL_LOGIC)) { + /* here we want to keep the right expressions' type */ + break; + } + } + } out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]); + } break; case opid2('?',':'): + if (vec_last(parser->pot) != POT_TERNARY2) { + parseerror(parser, "mismatched parenthesis/ternary"); + return false; + } + vec_pop(parser->pot); if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) { ast_type_to_string(exprs[1], ty1, sizeof(ty1)); ast_type_to_string(exprs[2], ty2, sizeof(ty2)); - parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2); + parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2); return false; } if (CanConstFold1(exprs[0])) @@ -902,18 +978,17 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) } else assignop = type_storep_instr[exprs[0]->expression.vtype]; - if (!ast_compare_type(field->expression.next, exprs[1])) { + if (assignop == AINSTR_END || + !ast_compare_type(field->expression.next, exprs[1])) + { ast_type_to_string(field->expression.next, ty1, sizeof(ty1)); ast_type_to_string(exprs[1], ty2, sizeof(ty2)); - if (opts_standard == COMPILER_QCC && + if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) && field->expression.next->expression.vtype == TYPE_FUNCTION && exprs[1]->expression.vtype == TYPE_FUNCTION) { - if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES, - "invalid types in assignment: cannot assign %s to %s", ty2, ty1)) - { - parser->errors++; - } + (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES, + "invalid types in assignment: cannot assign %s to %s", ty2, ty1); } else parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1); @@ -939,21 +1014,18 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) else if (!ast_compare_type(exprs[0], exprs[1])) { ast_type_to_string(exprs[0], ty1, sizeof(ty1)); ast_type_to_string(exprs[1], ty2, sizeof(ty2)); - if (opts_standard == COMPILER_QCC && + if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) && exprs[0]->expression.vtype == TYPE_FUNCTION && exprs[1]->expression.vtype == TYPE_FUNCTION) { - if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES, - "invalid types in assignment: cannot assign %s to %s", ty2, ty1)) - { - parser->errors++; - } + (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES, + "invalid types in assignment: cannot assign %s to %s", ty2, ty1); } else parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1); } } - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]); @@ -970,7 +1042,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) addop = INSTR_ADD_F; else addop = INSTR_SUB_F; - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } if (ast_istype(exprs[0], ast_entfield)) { @@ -998,7 +1070,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) addop = INSTR_SUB_F; subop = INSTR_ADD_F; } - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } if (ast_istype(exprs[0], ast_entfield)) { @@ -1027,7 +1099,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) ty1, ty2); return false; } - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } if (ast_istype(exprs[0], ast_entfield)) @@ -1064,7 +1136,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) ty1, ty2); return false; } - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } if (ast_istype(exprs[0], ast_entfield)) @@ -1108,7 +1180,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) ty1, ty2); return false; } - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } if (ast_istype(exprs[0], ast_entfield)) @@ -1138,10 +1210,12 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]); if (!out) return false; - if (ast_istype(exprs[0], ast_value) && asvalue[0]->constant) { + if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) { parseerror(parser, "assignment to constant `%s`", asvalue[0]->name); } - out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out); + asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out); + asbinstore->keep_dest = true; + out = (ast_expression*)asbinstore; break; } #undef NotSameType @@ -1182,9 +1256,25 @@ static bool parser_close_call(parser_t *parser, shunt *sy) fun = sy->out[fid].out; + if (fun == intrinsic_debug_typestring) { + char ty[1024]; + if (fid+2 != vec_size(sy->out) || + vec_last(sy->out).block) + { + parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter"); + return false; + } + ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty)); + ast_unref(vec_last(sy->out).out); + sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out), + (ast_expression*)parser_const_string(parser, ty, false)); + vec_shrinkby(sy->out, 1); + return true; + } + call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun); if (!call) { - parseerror(parser, "out of memory"); + parseerror(parser, "internal error: failed to create ast_call node"); return false; } @@ -1205,8 +1295,7 @@ static bool parser_close_call(parser_t *parser, shunt *sy) params->exprs = NULL; ast_delete(params); } - if (!ast_call_check_types(call)) - parser->errors++; + (void)!ast_call_check_types(call); } else { parseerror(parser, "invalid function call"); return false; @@ -1225,14 +1314,14 @@ static bool parser_close_call(parser_t *parser, shunt *sy) return false; } else { if (vec_size(fun->expression.params) != paramcount && - !(fun->expression.variadic && + !((fun->expression.flags & AST_FLAG_VARIADIC) && vec_size(fun->expression.params) < paramcount)) { ast_value *fval; const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many"; fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL); - if (opts_standard == COMPILER_GMQCC) + if (opts.standard == COMPILER_GMQCC) { if (fval) parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n" @@ -1241,9 +1330,9 @@ static bool parser_close_call(parser_t *parser, shunt *sy) fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); else parseerror(parser, "too %s parameters for function call: expected %i, got %i\n" - " -> `%s` has been declared here: %s:%i", - fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, - fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); + " -> it has been declared here: %s:%i", + fewmany, (int)vec_size(fun->expression.params), (int)paramcount, + ast_ctx(fun).file, (int)ast_ctx(fun).line); return false; } else @@ -1257,9 +1346,9 @@ static bool parser_close_call(parser_t *parser, shunt *sy) else return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS, "too %s parameters for function call: expected %i, got %i\n" - " -> `%s` has been declared here: %s:%i", - fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, - fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); + " -> it has been declared here: %s:%i", + fewmany, (int)vec_size(fun->expression.params), (int)paramcount, + ast_ctx(fun).file, (int)ast_ctx(fun).line); } } } @@ -1295,11 +1384,23 @@ static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only) /* pop off the parenthesis */ vec_shrinkby(sy->ops, 1); /* then apply the index operator */ - if (!parser_sy_pop(parser, sy)) + if (!parser_sy_apply_operator(parser, sy)) return false; return true; } - if (!parser_sy_pop(parser, sy)) + if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) { + if (functions_only) + return false; + if (vec_last(parser->pot) != POT_TERNARY1) { + parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)"); + return false; + } + vec_last(parser->pot) = POT_TERNARY2; + /* pop off the parenthesis */ + vec_shrinkby(sy->ops, 1); + return true; + } + if (!parser_sy_apply_operator(parser, sy)) return false; } return true; @@ -1367,7 +1468,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma val = parser_const_string(parser, parser_tokval(parser), true); wantop = true; if (!val) - return false; + return NULL; vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); DEBUGSHUNTDO(con_out("push string\n")); @@ -1385,7 +1486,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma } wantop = true; /* variable */ - if (opts_standard == COMPILER_GMQCC) + if (opts.standard == COMPILER_GMQCC) { if (parser->memberof == TYPE_ENTITY) { /* still get vars first since there could be a fieldpointer */ @@ -1410,11 +1511,28 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma var = parser_find_field(parser, parser_tokval(parser)); } if (!var) { - parseerror(parser, "unexpected ident: %s", parser_tokval(parser)); - goto onerr; + /* intrinsics */ + if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) { + var = (ast_expression*)intrinsic_debug_typestring; + + } + else + { + parseerror(parser, "unexpected ident: %s", parser_tokval(parser)); + goto onerr; + } + } + else + { + if (ast_istype(var, ast_value)) { + ((ast_value*)var)->uses++; + } + else if (ast_istype(var, ast_member)) { + ast_member *mem = (ast_member*)var; + if (ast_istype(mem->owner, ast_value)) + ((ast_value*)(mem->owner))->uses++; + } } - if (ast_istype(var, ast_value)) - ((ast_value*)var)->uses++; vec_push(sy.out, syexp(parser_ctx(parser), var)); DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser))); } @@ -1427,7 +1545,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma wantop = true; val = parser_const_float(parser, (parser_token(parser)->constval.f)); if (!val) - return false; + return NULL; vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f)); } @@ -1440,7 +1558,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma wantop = true; val = parser_const_float(parser, (double)(parser_token(parser)->constval.i)); if (!val) - return false; + return NULL; vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i)); } @@ -1453,7 +1571,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma wantop = true; val = parser_const_string(parser, parser_tokval(parser), false); if (!val) - return false; + return NULL; vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); DEBUGSHUNTDO(con_out("push string\n")); } @@ -1466,7 +1584,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma wantop = true; val = parser_const_vector(parser, parser_token(parser)->constval.v); if (!val) - return false; + return NULL; vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); DEBUGSHUNTDO(con_out("push '%g %g %g'\n", parser_token(parser)->constval.v.x, @@ -1491,6 +1609,11 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma /* closing an opening paren */ if (!parser_close_paren(parser, &sy, false)) goto onerr; + if (vec_last(parser->pot) != POT_PAREN) { + parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)"); + goto onerr; + } + vec_pop(parser->pot); } else { DEBUGSHUNTDO(con_out("do[nop] )\n")); --parens; @@ -1499,6 +1622,11 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma /* allowed for function calls */ if (!parser_close_paren(parser, &sy, true)) goto onerr; + if (vec_last(parser->pot) != POT_PAREN) { + parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)"); + goto onerr; + } + vec_pop(parser->pot); } wantop = true; } @@ -1510,8 +1638,17 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma break; if (!parser_close_paren(parser, &sy, false)) goto onerr; + if (vec_last(parser->pot) != POT_PAREN) { + parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)"); + goto onerr; + } + vec_pop(parser->pot); wantop = true; } + else if (parser->tok == TOKEN_TYPENAME) { + parseerror(parser, "unexpected typename"); + goto onerr; + } else if (parser->tok != TOKEN_OPERATOR) { if (wantop) { parseerror(parser, "expected operator or end of statement"); @@ -1553,6 +1690,12 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma break; } + if (op->id == opid1(',')) { + if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) { + (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression"); + } + } + if (vec_size(sy.ops) && !vec_last(sy.ops).paren) olast = &operators[vec_last(sy.ops).etype-1]; @@ -1560,7 +1703,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma (op->prec < olast->prec) || (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) ) { - if (!parser_sy_pop(parser, &sy)) + if (!parser_sy_apply_operator(parser, &sy)) goto onerr; if (vec_size(sy.ops) && !vec_last(sy.ops).paren) olast = &operators[vec_last(sy.ops).etype-1]; @@ -1568,7 +1711,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma olast = NULL; } - if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) { + if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) { /* for gmqcc standard: open up the namespace of the previous type */ ast_expression *prevex = vec_last(sy.out).out; if (!prevex) { @@ -1590,11 +1733,11 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma if (wantop) { size_t sycount = vec_size(sy.out); DEBUGSHUNTDO(con_out("push [op] (\n")); - ++parens; + ++parens; vec_push(parser->pot, POT_PAREN); /* we expected an operator, this is the function-call operator */ vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1)); } else { - ++parens; + ++parens; vec_push(parser->pot, POT_PAREN); vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0)); DEBUGSHUNTDO(con_out("push [nop] (\n")); } @@ -1604,20 +1747,31 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma parseerror(parser, "unexpected array subscript"); goto onerr; } - ++parens; + ++parens; vec_push(parser->pot, POT_PAREN); /* push both the operator and the paren, this makes life easier */ vec_push(sy.ops, syop(parser_ctx(parser), op)); vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0)); wantop = false; } else if (op->id == opid2('?',':')) { - wantop = false; vec_push(sy.ops, syop(parser_ctx(parser), op)); + vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0)); wantop = false; - --ternaries; + ++ternaries; + vec_push(parser->pot, POT_TERNARY1); } else if (op->id == opid2(':','?')) { - /* we don't push this operator */ + if (!vec_size(parser->pot)) { + parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)"); + goto onerr; + } + if (vec_last(parser->pot) != POT_TERNARY1) { + parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)"); + goto onerr; + } + if (!parser_close_paren(parser, &sy, false)) + goto onerr; + vec_push(sy.ops, syop(parser_ctx(parser), op)); wantop = false; - ++ternaries; + --ternaries; } else { DEBUGSHUNTDO(con_out("push operator %s\n", op->op)); vec_push(sy.ops, syop(parser_ctx(parser), op)); @@ -1635,7 +1789,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma } while (vec_size(sy.ops)) { - if (!parser_sy_pop(parser, &sy)) + if (!parser_sy_apply_operator(parser, &sy)) goto onerr; } @@ -1648,6 +1802,11 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma vec_free(sy.out); vec_free(sy.ops); DEBUGSHUNTDO(con_out("shunt done\n")); + if (vec_size(parser->pot)) { + parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot)); + return NULL; + } + vec_free(parser->pot); return expr; onerr: @@ -1675,6 +1834,7 @@ static void parser_enterblock(parser_t *parser) vec_push(parser->_blocklocals, vec_size(parser->_locals)); vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE)); vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs)); + vec_push(parser->_block_ctx, parser_ctx(parser)); } static bool parser_leaveblock(parser_t *parser) @@ -1701,7 +1861,7 @@ static bool parser_leaveblock(parser_t *parser) ast_value *v = (ast_value*)e; vec_pop(parser->_locals); if (ast_istype(e, ast_value) && !v->uses) { - if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) + if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) rv = false; } } @@ -1714,6 +1874,7 @@ static bool parser_leaveblock(parser_t *parser) util_htdel(vec_last(parser->typedefs)); vec_pop(parser->typedefs); + vec_pop(parser->_block_ctx); return rv; } @@ -1723,10 +1884,62 @@ static void parser_addlocal(parser_t *parser, const char *name, ast_expression * util_htset(vec_last(parser->variables), name, (void*)e); } +static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot) +{ + bool ifnot = false; + ast_unary *unary; + ast_expression *prev; + + if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING) + { + prev = cond; + cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond); + if (!cond) { + ast_unref(prev); + parseerror(parser, "internal error: failed to process condition"); + return NULL; + } + ifnot = !ifnot; + } + else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR) + { + /* vector types need to be cast to true booleans */ + ast_binary *bin = (ast_binary*)cond; + if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR)) + { + /* in perl-logic, AND and OR take care of the -fcorrect-logic */ + prev = cond; + cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond); + if (!cond) { + ast_unref(prev); + parseerror(parser, "internal error: failed to process condition"); + return NULL; + } + ifnot = !ifnot; + } + } + + unary = (ast_unary*)cond; + while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F) + { + cond = unary->operand; + unary->operand = NULL; + ast_delete(unary); + ifnot = !ifnot; + unary = (ast_unary*)cond; + } + + if (!cond) + parseerror(parser, "internal error: failed to process condition"); + + if (ifnot) *_ifnot = !*_ifnot; + return cond; +} + static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out) { ast_ifthen *ifthen; - ast_expression *cond, *ontrue, *onfalse = NULL; + ast_expression *cond, *ontrue = NULL, *onfalse = NULL; bool ifnot = false; lex_ctx ctx = parser_ctx(parser); @@ -1770,8 +1983,7 @@ static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out) ast_delete(cond); return false; } - ontrue = parse_statement_or_block(parser); - if (!ontrue) { + if (!parse_statement_or_block(parser, &ontrue)) { ast_delete(cond); return false; } @@ -1784,14 +1996,20 @@ static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out) ast_delete(cond); return false; } - onfalse = parse_statement_or_block(parser); - if (!onfalse) { + if (!parse_statement_or_block(parser, &onfalse)) { ast_delete(ontrue); ast_delete(cond); return false; } } + cond = process_condition(parser, cond, &ifnot); + if (!cond) { + if (ontrue) ast_delete(ontrue); + if (onfalse) ast_delete(onfalse); + return false; + } + if (ifnot) ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue); else @@ -1805,6 +2023,8 @@ static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out ast_loop *aloop; ast_expression *cond, *ontrue; + bool ifnot = false; + lex_ctx ctx = parser_ctx(parser); (void)block; /* not touching */ @@ -1835,13 +2055,17 @@ static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out ast_delete(cond); return false; } - ontrue = parse_statement_or_block(parser); - if (!ontrue) { + if (!parse_statement_or_block(parser, &ontrue)) { ast_delete(cond); return false; } - aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue); + cond = process_condition(parser, cond, &ifnot); + if (!cond) { + ast_delete(ontrue); + return false; + } + aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue); *out = (ast_expression*)aloop; return true; } @@ -1851,6 +2075,8 @@ static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **o ast_loop *aloop; ast_expression *cond, *ontrue; + bool ifnot = false; + lex_ctx ctx = parser_ctx(parser); (void)block; /* not touching */ @@ -1860,8 +2086,7 @@ static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **o parseerror(parser, "expected loop body"); return false; } - ontrue = parse_statement_or_block(parser); - if (!ontrue) + if (!parse_statement_or_block(parser, &ontrue)) return false; /* expect the "while" */ @@ -1911,7 +2136,12 @@ static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **o return false; } - aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue); + cond = process_condition(parser, cond, &ifnot); + if (!cond) { + ast_delete(ontrue); + return false; + } + aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue); *out = (ast_expression*)aloop; return true; } @@ -1921,7 +2151,9 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) ast_loop *aloop; ast_expression *initexpr, *cond, *increment, *ontrue; ast_value *typevar; - bool retval = true; + + bool retval = true; + bool ifnot = false; lex_ctx ctx = parser_ctx(parser); @@ -1948,12 +2180,12 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) typevar = parser_find_typedef(parser, parser_tokval(parser), 0); if (typevar || parser->tok == TOKEN_TYPENAME) { - if (opts_standard != COMPILER_GMQCC) { + if (opts.standard != COMPILER_GMQCC) { if (parsewarning(parser, WARN_EXTENSIONS, "current standard does not allow variable declarations in for-loop initializers")) goto onerr; } - if (!parse_variable(parser, block, true, CV_VAR, typevar)) + if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, false)) goto onerr; } else if (parser->tok != ';') @@ -2011,12 +2243,15 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) parseerror(parser, "expected for-loop body"); goto onerr; } - ontrue = parse_statement_or_block(parser); - if (!ontrue) { + if (!parse_statement_or_block(parser, &ontrue)) goto onerr; - } - aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue); + if (cond) { + cond = process_condition(parser, cond, &ifnot); + if (!cond) + goto onerr; + } + aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue); *out = (ast_expression*)aloop; if (!parser_leaveblock(parser)) @@ -2036,6 +2271,8 @@ static bool parse_return(parser_t *parser, ast_block *block, ast_expression **ou ast_return *ret = NULL; ast_value *expected = parser->function->vtype; + lex_ctx ctx = parser_ctx(parser); + (void)block; /* not touching */ if (!parser_next(parser)) { @@ -2052,7 +2289,7 @@ static bool parse_return(parser_t *parser, ast_block *block, ast_expression **ou parseerror(parser, "return with invalid expression"); } - ret = ast_return_new(exp->expression.node.context, exp); + ret = ast_return_new(ctx, exp); if (!ret) { ast_delete(exp); return false; @@ -2061,12 +2298,12 @@ static bool parse_return(parser_t *parser, ast_block *block, ast_expression **ou if (!parser_next(parser)) parseerror(parser, "parse error"); if (expected->expression.next->expression.vtype != TYPE_VOID) { - if (opts_standard != COMPILER_GMQCC) + if (opts.standard != COMPILER_GMQCC) (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value"); else parseerror(parser, "return without value"); } - ret = ast_return_new(parser_ctx(parser), NULL); + ret = ast_return_new(ctx, NULL); } *out = (ast_expression*)ret; return true; @@ -2090,16 +2327,106 @@ static bool parse_break_continue(parser_t *parser, ast_block *block, ast_express return true; } +/* returns true when it was a variable qualifier, false otherwise! + * on error, cvq is set to CV_WRONG + */ +static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn, bool *is_static) +{ + bool had_const = false; + bool had_var = false; + bool had_noref = false; + bool had_noreturn = false; + bool had_attrib = false; + bool had_static = false; + + *cvq = CV_NONE; + for (;;) { + if (parser->tok == TOKEN_ATTRIBUTE_OPEN) { + had_attrib = true; + /* parse an attribute */ + if (!parser_next(parser)) { + parseerror(parser, "expected attribute after `[[`"); + *cvq = CV_WRONG; + return false; + } + if (!strcmp(parser_tokval(parser), "noreturn")) { + had_noreturn = true; + if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) { + parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`"); + *cvq = CV_WRONG; + return false; + } + } + else if (!strcmp(parser_tokval(parser), "noref")) { + had_noref = true; + if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) { + parseerror(parser, "`noref` attribute has no parameters, expected `]]`"); + *cvq = CV_WRONG; + return false; + } + } + else + { + /* Skip tokens until we hit a ]] */ + (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser)); + while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) { + if (!parser_next(parser)) { + parseerror(parser, "error inside attribute"); + *cvq = CV_WRONG; + return false; + } + } + } + } + else if (!strcmp(parser_tokval(parser), "static")) + had_static = true; + else if (!strcmp(parser_tokval(parser), "const")) + had_const = true; + else if (!strcmp(parser_tokval(parser), "var")) + had_var = true; + else if (with_local && !strcmp(parser_tokval(parser), "local")) + had_var = true; + else if (!strcmp(parser_tokval(parser), "noref")) + had_noref = true; + else if (!had_const && !had_var && !had_noref && !had_noreturn && !had_attrib && !had_static) { + return false; + } + else + break; + if (!parser_next(parser)) + goto onerr; + } + if (had_const) + *cvq = CV_CONST; + else if (had_var) + *cvq = CV_VAR; + else + *cvq = CV_NONE; + *noref = had_noref; + *noreturn = had_noreturn; + *is_static = had_static; + return true; +onerr: + parseerror(parser, "parse error after variable qualifier"); + *cvq = CV_WRONG; + return true; +} + static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out) { ast_expression *operand; ast_value *opval; + ast_value *typevar; ast_switch *switchnode; ast_switch_case swcase; + int cvq; + bool noref, noreturn, is_static; + lex_ctx ctx = parser_ctx(parser); (void)block; /* not touching */ + (void)opval; /* parse over the opening paren */ if (!parser_next(parser) || parser->tok != '(') { @@ -2139,15 +2466,38 @@ static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **ou return false; } + /* new block; allow some variables to be declared here */ + parser_enterblock(parser); + while (true) { + typevar = NULL; + if (parser->tok == TOKEN_IDENT) + typevar = parser_find_typedef(parser, parser_tokval(parser), 0); + if (typevar || parser->tok == TOKEN_TYPENAME) { + if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false)) { + ast_delete(switchnode); + return false; + } + continue; + } + if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn, &is_static)) + { + if (cvq == CV_WRONG) { + ast_delete(switchnode); + return false; + } + if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn, is_static)) { + ast_delete(switchnode); + return false; + } + continue; + } + break; + } + /* case list! */ while (parser->tok != '}') { ast_block *caseblock; - if (parser->tok != TOKEN_KEYWORD) { - ast_delete(switchnode); - parseerror(parser, "expected 'case' or 'default'"); - return false; - } if (!strcmp(parser_tokval(parser), "case")) { if (!parser_next(parser)) { ast_delete(switchnode); @@ -2161,8 +2511,7 @@ static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **ou return false; } if (!OPTS_FLAG(RELAXED_SWITCH)) { - opval = (ast_value*)swcase.value; - if (!ast_istype(swcase.value, ast_value)) { /* || !opval->constant) { */ + if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */ parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch"); ast_unref(operand); return false; @@ -2177,6 +2526,11 @@ static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **ou return false; } } + else { + ast_delete(switchnode); + parseerror(parser, "expected 'case' or 'default'"); + return false; + } /* Now the colon and body */ if (parser->tok != ':') { @@ -2217,10 +2571,15 @@ static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **ou } if (!expr) continue; - ast_block_add_expr(caseblock, expr); + if (!ast_block_add_expr(caseblock, expr)) { + ast_delete(switchnode); + return false; + } } } + parser_leaveblock(parser); + /* closing paren */ if (parser->tok != '}') { ast_delete(switchnode); @@ -2270,10 +2629,81 @@ static bool parse_goto(parser_t *parser, ast_expression **out) return true; } +static bool parse_skipwhite(parser_t *parser) +{ + do { + if (!parser_next(parser)) + return false; + } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR); + return parser->tok < TOKEN_ERROR; +} + +static bool parse_eol(parser_t *parser) +{ + if (!parse_skipwhite(parser)) + return false; + return parser->tok == TOKEN_EOL; +} + +static bool parse_pragma_do(parser_t *parser) +{ + if (!parser_next(parser) || + parser->tok != TOKEN_IDENT || + strcmp(parser_tokval(parser), "pragma")) + { + parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser)); + return false; + } + if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) { + parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser)); + return false; + } + + if (!strcmp(parser_tokval(parser), "noref")) { + if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) { + parseerror(parser, "`noref` pragma requires an argument: 0 or 1"); + return false; + } + parser->noref = !!parser_token(parser)->constval.i; + if (!parse_eol(parser)) { + parseerror(parser, "parse error after `noref` pragma"); + return false; + } + } + else + { + (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser)); + return false; + } + + return true; +} + +static bool parse_pragma(parser_t *parser) +{ + bool rv; + parser->lex->flags.preprocessing = true; + parser->lex->flags.mergelines = true; + rv = parse_pragma_do(parser); + if (parser->tok != TOKEN_EOL) { + parseerror(parser, "junk after pragma"); + rv = false; + } + parser->lex->flags.preprocessing = false; + parser->lex->flags.mergelines = false; + if (!parser_next(parser)) { + parseerror(parser, "parse error after pragma"); + rv = false; + } + return rv; +} + static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases) { - int cvq; + bool noref, noreturn, is_static; + int cvq = CV_NONE; ast_value *typevar = NULL; + *out = NULL; if (parser->tok == TOKEN_IDENT) @@ -2286,47 +2716,23 @@ static bool parse_statement(parser_t *parser, ast_block *block, ast_expression * parseerror(parser, "cannot declare a variable from here"); return false; } - if (opts_standard == COMPILER_QCC) { + if (opts.standard == COMPILER_QCC) { if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable")) return false; } - if (!parse_variable(parser, block, false, CV_NONE, typevar)) + if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false)) return false; - *out = NULL; return true; } - else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) + else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn, &is_static)) { - goto ident_var; + if (cvq == CV_WRONG) + return false; + return parse_variable(parser, block, true, cvq, NULL, noref, noreturn, is_static); } else if (parser->tok == TOKEN_KEYWORD) { - if (!strcmp(parser_tokval(parser), "local") || - !strcmp(parser_tokval(parser), "const") || - !strcmp(parser_tokval(parser), "var")) - { -ident_var: - if (parser_tokval(parser)[0] == 'c') - cvq = CV_CONST; - else if (parser_tokval(parser)[0] == 'v') - cvq = CV_VAR; - else - cvq = CV_NONE; - - if (!block) { - parseerror(parser, "cannot declare a local variable here"); - return false; - } - if (!parser_next(parser)) { - parseerror(parser, "expected variable declaration"); - return false; - } - if (!parse_variable(parser, block, true, cvq, NULL)) - return false; - *out = NULL; - return true; - } - else if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype")) + if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype")) { char ty[1024]; ast_value *tdef; @@ -2377,7 +2783,7 @@ ident_var: } else if (!strcmp(parser_tokval(parser), "for")) { - if (opts_standard == COMPILER_QCC) { + if (opts.standard == COMPILER_QCC) { if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?")) return false; } @@ -2422,7 +2828,7 @@ ident_var: else if (parser->tok == '{') { ast_block *inner; - inner = parse_block(parser, false); + inner = parse_block(parser); if (!inner) return false; *out = (ast_expression*)inner; @@ -2480,7 +2886,7 @@ ident_var: } } -static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn) +static bool parse_block_into(parser_t *parser, ast_block *block) { bool retval = true; @@ -2504,23 +2910,16 @@ static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn } if (!expr) continue; - ast_block_add_expr(block, expr); + if (!ast_block_add_expr(block, expr)) { + ast_delete(block); + block = NULL; + goto cleanup; + } } if (parser->tok != '}') { block = NULL; } else { - if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID) - { - if (!vec_size(block->exprs) || - !ast_istype(vec_last(block->exprs), ast_return)) - { - if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) { - block = NULL; - goto cleanup; - } - } - } (void)parser_next(parser); } @@ -2530,27 +2929,26 @@ cleanup: return retval && !!block; } -static ast_block* parse_block(parser_t *parser, bool warnreturn) +static ast_block* parse_block(parser_t *parser) { ast_block *block; block = ast_block_new(parser_ctx(parser)); if (!block) return NULL; - if (!parse_block_into(parser, block, warnreturn)) { + if (!parse_block_into(parser, block)) { ast_block_delete(block); return NULL; } return block; } -static ast_expression* parse_statement_or_block(parser_t *parser) +static bool parse_statement_or_block(parser_t *parser, ast_expression **out) { - ast_expression *expr = NULL; - if (parser->tok == '{') - return (ast_expression*)parse_block(parser, false); - if (!parse_statement(parser, NULL, &expr, false)) - return NULL; - return expr; + if (parser->tok == '{') { + *out = (ast_expression*)parse_block(parser); + return !!*out; + } + return parse_statement(parser, NULL, out, false); } static bool create_vector_members(ast_value *var, ast_member **me) @@ -2559,7 +2957,7 @@ static bool create_vector_members(ast_value *var, ast_member **me) size_t len = strlen(var->name); for (i = 0; i < 3; ++i) { - char *name = mem_a(len+3); + char *name = (char*)mem_a(len+3); memcpy(name, var->name, len); name[len+0] = '_'; name[len+1] = 'x'+i; @@ -2601,7 +2999,7 @@ static bool parse_function_body(parser_t *parser, ast_value *var) return false; } - if (var->expression.variadic) { + if (var->expression.flags & AST_FLAG_VARIADIC) { if (parsewarning(parser, WARN_VARIADIC_FUNCTION, "variadic function with implementation will not be able to access additional parameters")) { @@ -2781,9 +3179,12 @@ static bool parse_function_body(parser_t *parser, ast_value *var) if (store_think) ast_delete(store_think); retval = false; } - ast_block_add_expr(block, (ast_expression*)store_frame); - ast_block_add_expr(block, (ast_expression*)store_nextthink); - ast_block_add_expr(block, (ast_expression*)store_think); + if (!ast_block_add_expr(block, (ast_expression*)store_frame) || + !ast_block_add_expr(block, (ast_expression*)store_nextthink) || + !ast_block_add_expr(block, (ast_expression*)store_think)) + { + retval = false; + } } if (!retval) { @@ -2829,7 +3230,7 @@ static bool parse_function_body(parser_t *parser, ast_value *var) vec_push(parser->functions, func); parser->function = func; - if (!parse_block_into(parser, block, true)) { + if (!parse_block_into(parser, block)) { ast_block_delete(block); goto enderrfn; } @@ -2846,7 +3247,7 @@ static bool parse_function_body(parser_t *parser, ast_value *var) if (parser->tok == ';') return parser_next(parser); - else if (opts_standard == COMPILER_QCC) + else if (opts.standard == COMPILER_QCC) parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)"); return retval; @@ -2932,7 +3333,10 @@ static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast return NULL; } - ast_block_add_expr(block, (ast_expression*)st); + if (!ast_block_add_expr(block, (ast_expression*)st)) { + ast_delete(block); + return NULL; + } ret = ast_return_new(ctx, NULL); if (!ret) { @@ -2940,7 +3344,10 @@ static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast return NULL; } - ast_block_add_expr(block, (ast_expression*)ret); + if (!ast_block_add_expr(block, (ast_expression*)ret)) { + ast_delete(block); + return NULL; + } return (ast_expression*)block; } else { @@ -3001,7 +3408,10 @@ static ast_expression *array_field_setter_node( return NULL; } - ast_block_add_expr(block, (ast_expression*)st); + if (!ast_block_add_expr(block, (ast_expression*)st)) { + ast_delete(block); + return NULL; + } ret = ast_return_new(ctx, NULL); if (!ret) { @@ -3009,7 +3419,10 @@ static ast_expression *array_field_setter_node( return NULL; } - ast_block_add_expr(block, (ast_expression*)ret); + if (!ast_block_add_expr(block, (ast_expression*)ret)) { + ast_delete(block); + return NULL; + } return (ast_expression*)block; } else { @@ -3121,9 +3534,8 @@ static bool parser_create_array_setter(parser_t *parser, ast_value *array, const goto cleanup; } - ast_block_add_expr(func->blocks[0], root); array->setter = fval; - return true; + return ast_block_add_expr(func->blocks[0], root); cleanup: if (index) ast_delete(index); if (value) ast_delete(value); @@ -3170,9 +3582,8 @@ static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, goto cleanup; } - ast_block_add_expr(func->blocks[0], root); array->setter = fval; - return true; + return ast_block_add_expr(func->blocks[0], root); cleanup: if (entity) ast_delete(entity); if (index) ast_delete(index); @@ -3217,9 +3628,8 @@ static bool parser_create_array_getter(parser_t *parser, ast_value *array, const goto cleanup; } - ast_block_add_expr(func->blocks[0], root); array->getter = fval; - return true; + return ast_block_add_expr(func->blocks[0], root); cleanup: if (index) ast_delete(index); if (root) ast_delete(root); @@ -3284,9 +3694,9 @@ static ast_value *parse_parameter_list(parser_t *parser, ast_value *var) goto on_error; vec_push(params, param); if (param->expression.vtype >= TYPE_VARIANT) { - char typename[1024]; - ast_type_to_string((ast_expression*)param, typename, sizeof(typename)); - parseerror(parser, "type not supported as part of a parameter list: %s", typename); + char tname[1024]; /* typename is reserved in C++ */ + ast_type_to_string((ast_expression*)param, tname, sizeof(tname)); + parseerror(parser, "type not supported as part of a parameter list: %s", tname); goto on_error; } } @@ -3296,7 +3706,7 @@ static ast_value *parse_parameter_list(parser_t *parser, ast_value *var) vec_free(params); /* sanity check */ - if (vec_size(params) > 8 && opts_standard == COMPILER_QCC) + if (vec_size(params) > 8 && opts.standard == COMPILER_QCC) (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard"); /* parse-out */ @@ -3308,7 +3718,8 @@ static ast_value *parse_parameter_list(parser_t *parser, ast_value *var) /* now turn 'var' into a function type */ fval = ast_value_new(ctx, "", TYPE_FUNCTION); fval->expression.next = (ast_expression*)var; - fval->expression.variadic = variadic; + if (variadic) + fval->expression.flags |= AST_FLAG_VARIADIC; var = fval; var->expression.params = params; @@ -3505,7 +3916,7 @@ static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_va } /* now there may be function parens again */ - if (parser->tok == '(' && opts_standard == COMPILER_QCC) + if (parser->tok == '(' && opts.standard == COMPILER_QCC) parseerror(parser, "C-style function syntax is not allowed in -std=qcc"); if (parser->tok == '(' && wasarray) parseerror(parser, "arrays as part of a return type is not supported"); @@ -3573,7 +3984,7 @@ static bool parse_typedef(parser_t *parser) return true; } -static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int is_const_var, ast_value *cached_typedef) +static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static) { ast_value *var; ast_value *proto; @@ -3590,6 +4001,9 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield ast_member *me[3]; + if (!localblock && is_static) + parseerror(parser, "`static` qualifier is not supported in global scope"); + /* get the first complete variable */ var = parse_typename(parser, &basetype, cached_typedef); if (!var) { @@ -3604,7 +4018,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield /* Part 0: finish the type */ if (parser->tok == '(') { - if (opts_standard == COMPILER_QCC) + if (opts.standard == COMPILER_QCC) parseerror(parser, "C-style function syntax is not allowed in -std=qcc"); var = parse_parameter_list(parser, var); if (!var) { @@ -3627,7 +4041,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield } /* for functions returning functions */ while (parser->tok == '(') { - if (opts_standard == COMPILER_QCC) + if (opts.standard == COMPILER_QCC) parseerror(parser, "C-style function syntax is not allowed in -std=qcc"); var = parse_parameter_list(parser, var); if (!var) { @@ -3636,8 +4050,12 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield } } - if (is_const_var == CV_CONST) - var->constant = true; + var->cvq = qualifier; + /* in a noref section we simply bump the usecount */ + if (noref || parser->noref) + var->uses++; + if (noreturn) + var->expression.flags |= AST_FLAG_NORETURN; /* Part 1: * check for validity: (end_sys_..., multiple-definitions, prototypes, ...) @@ -3648,10 +4066,12 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield /* Deal with end_sys_ vars */ was_end = false; if (!strcmp(var->name, "end_sys_globals")) { + var->uses++; parser->crc_globals = vec_size(parser->globals); was_end = true; } else if (!strcmp(var->name, "end_sys_fields")) { + var->uses++; parser->crc_fields = vec_size(parser->fields); was_end = true; } @@ -3686,7 +4106,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield goto cleanup; */ } - if (opts_standard == COMPILER_QCC && + if (opts.standard == COMPILER_QCC && (old = parser_find_global(parser, var->name))) { parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc"); @@ -3726,7 +4146,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield { /* other globals */ if (old) { - if (opts_standard == COMPILER_GMQCC) { + if (opts.standard == COMPILER_GMQCC) { parseerror(parser, "global `%s` already declared here: %s:%i", var->name, ast_ctx(old).file, ast_ctx(old).line); retval = false; @@ -3739,9 +4159,18 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield retval = false; goto cleanup; } + proto = (ast_value*)old; + if (!ast_istype(old, ast_value)) { + parseerror(parser, "internal error: not an ast_value"); + retval = false; + proto = NULL; + goto cleanup; + } + ast_delete(var); + var = proto; } } - if (opts_standard == COMPILER_QCC && + if (opts.standard == COMPILER_QCC && (old = parser_find_field(parser, var->name))) { parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc"); @@ -3772,7 +4201,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield retval = false; goto cleanup; } - if (opts_standard != COMPILER_GMQCC) { + if (opts.standard != COMPILER_GMQCC) { ast_delete(var); var = NULL; goto skipvar; @@ -3799,7 +4228,8 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield if (!localblock) { /* deal with global variables, fields, functions */ - if (!nofields && var->expression.vtype == TYPE_FIELD) { + if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') { + var->isfield = true; vec_push(parser->fields, (ast_expression*)var); util_htset(parser->htfields, var->name, var); if (isvector) { @@ -3820,16 +4250,55 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield } } } else { - vec_push(localblock->locals, var); - parser_addlocal(parser, var->name, (ast_expression*)var); - if (isvector) { - for (i = 0; i < 3; ++i) { - parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]); - ast_block_collect(localblock, (ast_expression*)me[i]); + if (is_static) { + /* a static adds itself to be generated like any other global + * but is added to the local namespace instead + */ + char *defname = NULL; + size_t prefix_len, ln; + + ln = strlen(parser->function->name); + vec_append(defname, ln, parser->function->name); + + vec_append(defname, 2, "::"); + /* remember the length up to here */ + prefix_len = vec_size(defname); + + /* Add it to the local scope */ + util_htset(vec_last(parser->variables), var->name, (void*)var); + /* now rename the global */ + ln = strlen(var->name); + vec_append(defname, ln, var->name); + ast_value_set_name(var, defname); + + /* push it to the to-be-generated globals */ + vec_push(parser->globals, (ast_expression*)var); + + /* same game for the vector members */ + if (isvector) { + for (i = 0; i < 3; ++i) { + util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i])); + + vec_shrinkto(defname, prefix_len); + ln = strlen(me[i]->name); + vec_append(defname, ln, me[i]->name); + ast_member_set_name(me[i], defname); + + vec_push(parser->globals, (ast_expression*)me[i]); + } + } + vec_free(defname); + } else { + vec_push(localblock->locals, var); + parser_addlocal(parser, var->name, (ast_expression*)var); + if (isvector) { + for (i = 0; i < 3; ++i) { + parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]); + ast_block_collect(localblock, (ast_expression*)me[i]); + } } } } - } me[0] = me[1] = me[2] = NULL; cleanvar = false; @@ -3887,12 +4356,15 @@ skipvar: if (parser->tok == ',') goto another; + /* if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) { + */ + if (!var) { parseerror(parser, "missing comma or semicolon while parsing variables"); break; } - if (localblock && opts_standard == COMPILER_QCC) { + if (localblock && opts.standard == COMPILER_QCC) { if (parsewarning(parser, WARN_LOCAL_CONSTANTS, "initializing expression turns variable `%s` into a constant in this standard", var->name) ) @@ -3912,7 +4384,7 @@ skipvar: break; } } - else if (opts_standard == COMPILER_QCC) { + else if (opts.standard == COMPILER_QCC) { parseerror(parser, "expected '=' before function body in this standard"); } @@ -3935,7 +4407,7 @@ skipvar: parseerror(parser, "builtin number must be an integer constant"); break; } - if (parser_token(parser)->constval.i <= 0) { + if (parser_token(parser)->constval.i < 0) { parseerror(parser, "builtin number must be an integer greater than zero"); break; } @@ -3955,7 +4427,7 @@ skipvar: } vec_push(parser->functions, func); - func->builtin = -parser_token(parser)->constval.i; + func->builtin = -parser_token(parser)->constval.i-1; } if (!parser_next(parser)) { @@ -3968,12 +4440,14 @@ skipvar: } else if (parser->tok == '{' || parser->tok == '[') { - size_t i; if (localblock) { parseerror(parser, "cannot declare functions within functions"); break; } + if (proto) + ast_ctx(proto) = parser_ctx(parser); + if (!parse_function_body(parser, var)) break; ast_delete(basetype); @@ -3992,19 +4466,21 @@ skipvar: if (!localblock) { cval = (ast_value*)cexp; - if (!ast_istype(cval, ast_value) || !cval->hasvalue || !cval->constant) + if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield)) parseerror(parser, "cannot initialize a global constant variable with a non-constant expression"); else { - if (opts_standard != COMPILER_GMQCC && + if (opts.standard != COMPILER_GMQCC && !OPTS_FLAG(INITIALIZED_NONCONSTANTS) && - is_const_var != CV_VAR) + qualifier != CV_VAR) { - var->constant = true; + var->cvq = CV_CONST; } var->hasvalue = true; if (cval->expression.vtype == TYPE_STRING) var->constval.vstring = parser_strdup(cval->constval.vstring); + else if (cval->expression.vtype == TYPE_FIELD) + var->constval.vfield = cval; else memcpy(&var->constval, &cval->constval, sizeof(var->constval)); ast_unref(cval); @@ -4012,21 +4488,22 @@ skipvar: } else { bool cvq; shunt sy = { NULL, NULL }; - cvq = var->constant; - var->constant = false; + cvq = var->cvq; + var->cvq = CV_NONE; vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var)); vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp)); vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op)); - if (!parser_sy_pop(parser, &sy)) + if (!parser_sy_apply_operator(parser, &sy)) ast_unref(cexp); else { if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0) parseerror(parser, "internal error: leaked operands"); - ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out); + if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out)) + break; } vec_free(sy.out); vec_free(sy.ops); - var->constant = cvq; + var->cvq = cvq; } } @@ -4082,41 +4559,28 @@ cleanup: static bool parser_global_statement(parser_t *parser) { - ast_value *istype = NULL; + int cvq = CV_WRONG; + bool noref = false; + bool noreturn = false; + bool is_static = false; + ast_value *istype = NULL; + if (parser->tok == TOKEN_IDENT) istype = parser_find_typedef(parser, parser_tokval(parser), 0); if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.') { - return parse_variable(parser, NULL, false, CV_NONE, istype); + return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, false); } - else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) + else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn, &is_static)) { - if (!strcmp(parser_tokval(parser), "var")) { - if (!parser_next(parser)) { - parseerror(parser, "expected variable declaration after 'var'"); - return false; - } - return parse_variable(parser, NULL, true, CV_VAR, NULL); - } + if (cvq == CV_WRONG) + return false; + return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn, is_static); } else if (parser->tok == TOKEN_KEYWORD) { - if (!strcmp(parser_tokval(parser), "const")) { - if (!parser_next(parser)) { - parseerror(parser, "expected variable declaration after 'const'"); - return false; - } - if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) { - (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier"); - if (!parser_next(parser)) { - parseerror(parser, "expected variable declaration after 'const var'"); - return false; - } - } - return parse_variable(parser, NULL, true, CV_CONST, NULL); - } - else if (!strcmp(parser_tokval(parser), "typedef")) { + if (!strcmp(parser_tokval(parser), "typedef")) { if (!parser_next(parser)) { parseerror(parser, "expected type definition after 'typedef'"); return false; @@ -4126,6 +4590,10 @@ static bool parser_global_statement(parser_t *parser) parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser)); return false; } + else if (parser->tok == '#') + { + return parse_pragma(parser); + } else if (parser->tok == '$') { if (!parser_next(parser)) { @@ -4165,56 +4633,56 @@ static void generate_checksum(parser_t *parser) size_t i; ast_value *value; - crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{"); - crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n"); - /* - progdefs_crc_file("\tint\tpad;\n"); - progdefs_crc_file("\tint\tofs_return[3];\n"); - progdefs_crc_file("\tint\tofs_parm0[3];\n"); - progdefs_crc_file("\tint\tofs_parm1[3];\n"); - progdefs_crc_file("\tint\tofs_parm2[3];\n"); - progdefs_crc_file("\tint\tofs_parm3[3];\n"); - progdefs_crc_file("\tint\tofs_parm4[3];\n"); - progdefs_crc_file("\tint\tofs_parm5[3];\n"); - progdefs_crc_file("\tint\tofs_parm6[3];\n"); - progdefs_crc_file("\tint\tofs_parm7[3];\n"); - */ - for (i = 0; i < parser->crc_globals; ++i) { - if (!ast_istype(parser->globals[i], ast_value)) - continue; - value = (ast_value*)(parser->globals[i]); - switch (value->expression.vtype) { - case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break; - case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break; - case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break; - case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break; - default: - crc = progdefs_crc_both(crc, "\tint\t"); - break; - } - crc = progdefs_crc_both(crc, value->name); - crc = progdefs_crc_both(crc, ";\n"); - } - crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n"); - for (i = 0; i < parser->crc_fields; ++i) { - if (!ast_istype(parser->fields[i], ast_value)) - continue; - value = (ast_value*)(parser->fields[i]); - switch (value->expression.next->expression.vtype) { - case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break; - case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break; - case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break; - case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break; - default: - crc = progdefs_crc_both(crc, "\tint\t"); - break; - } - crc = progdefs_crc_both(crc, value->name); - crc = progdefs_crc_both(crc, ";\n"); - } - crc = progdefs_crc_both(crc, "} entvars_t;\n\n"); - - code_crc = crc; + crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{"); + crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n"); + /* + progdefs_crc_file("\tint\tpad;\n"); + progdefs_crc_file("\tint\tofs_return[3];\n"); + progdefs_crc_file("\tint\tofs_parm0[3];\n"); + progdefs_crc_file("\tint\tofs_parm1[3];\n"); + progdefs_crc_file("\tint\tofs_parm2[3];\n"); + progdefs_crc_file("\tint\tofs_parm3[3];\n"); + progdefs_crc_file("\tint\tofs_parm4[3];\n"); + progdefs_crc_file("\tint\tofs_parm5[3];\n"); + progdefs_crc_file("\tint\tofs_parm6[3];\n"); + progdefs_crc_file("\tint\tofs_parm7[3];\n"); + */ + for (i = 0; i < parser->crc_globals; ++i) { + if (!ast_istype(parser->globals[i], ast_value)) + continue; + value = (ast_value*)(parser->globals[i]); + switch (value->expression.vtype) { + case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break; + case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break; + case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break; + case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break; + default: + crc = progdefs_crc_both(crc, "\tint\t"); + break; + } + crc = progdefs_crc_both(crc, value->name); + crc = progdefs_crc_both(crc, ";\n"); + } + crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n"); + for (i = 0; i < parser->crc_fields; ++i) { + if (!ast_istype(parser->fields[i], ast_value)) + continue; + value = (ast_value*)(parser->fields[i]); + switch (value->expression.next->expression.vtype) { + case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break; + case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break; + case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break; + case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break; + default: + crc = progdefs_crc_both(crc, "\tint\t"); + break; + } + crc = progdefs_crc_both(crc, value->name); + crc = progdefs_crc_both(crc, ";\n"); + } + crc = progdefs_crc_both(crc, "} entvars_t;\n\n"); + + code_crc = crc; } static parser_t *parser; @@ -4260,7 +4728,7 @@ bool parser_compile() if (!parser_global_statement(parser)) { if (parser->tok == TOKEN_EOF) parseerror(parser, "unexpected eof"); - else if (!parser->errors) + else if (compile_errors) parseerror(parser, "there have been errors, bailing out"); lex_close(parser->lex); parser->lex = NULL; @@ -4277,7 +4745,7 @@ bool parser_compile() lex_close(parser->lex); parser->lex = NULL; - return !parser->errors; + return !compile_errors; } bool parser_compile_file(const char *filename) @@ -4290,7 +4758,7 @@ bool parser_compile_file(const char *filename) return parser_compile(); } -bool parser_compile_string_len(const char *name, const char *str, size_t len) +bool parser_compile_string(const char *name, const char *str, size_t len) { parser->lex = lex_open_string(str, len, name); if (!parser->lex) { @@ -4300,16 +4768,6 @@ bool parser_compile_string_len(const char *name, const char *str, size_t len) return parser_compile(); } -bool parser_compile_string(const char *name, const char *str) -{ - parser->lex = lex_open_string(str, strlen(str), name); - if (!parser->lex) { - con_err("failed to create lexer for string \"%s\"\n", name); - return false; - } - return parser_compile(); -} - void parser_cleanup() { size_t i; @@ -4358,6 +4816,8 @@ void parser_cleanup() vec_free(parser->typedefs); vec_free(parser->_blocktypedefs); + vec_free(parser->_block_ctx); + vec_free(parser->labels); vec_free(parser->gotos); @@ -4370,169 +4830,138 @@ bool parser_finish(const char *output) ir_builder *ir; bool retval = true; - if (!parser->errors) - { - ir = ir_builder_new("gmqcc_out"); - if (!ir) { - con_out("failed to allocate builder\n"); + if (compile_errors) { + con_out("*** there were compile errors\n"); + return false; + } + + ir = ir_builder_new("gmqcc_out"); + if (!ir) { + con_out("failed to allocate builder\n"); + return false; + } + + for (i = 0; i < vec_size(parser->fields); ++i) { + ast_value *field; + bool hasvalue; + if (!ast_istype(parser->fields[i], ast_value)) + continue; + field = (ast_value*)parser->fields[i]; + hasvalue = field->hasvalue; + field->hasvalue = false; + if (!ast_global_codegen((ast_value*)field, ir, true)) { + con_out("failed to generate field %s\n", field->name); + ir_builder_delete(ir); return false; } - - for (i = 0; i < vec_size(parser->fields); ++i) { - ast_value *field; - bool hasvalue; - if (!ast_istype(parser->fields[i], ast_value)) - continue; - field = (ast_value*)parser->fields[i]; - hasvalue = field->hasvalue; - field->hasvalue = false; - if (!ast_global_codegen((ast_value*)field, ir, true)) { - con_out("failed to generate field %s\n", field->name); - ir_builder_delete(ir); - return false; - } - if (hasvalue) { - ir_value *ifld; - ast_expression *subtype; - field->hasvalue = true; - subtype = field->expression.next; - ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype); - if (subtype->expression.vtype == TYPE_FIELD) - ifld->fieldtype = subtype->expression.next->expression.vtype; - else if (subtype->expression.vtype == TYPE_FUNCTION) - ifld->outtype = subtype->expression.next->expression.vtype; - (void)!ir_value_set_field(field->ir_v, ifld); - } - } - for (i = 0; i < vec_size(parser->globals); ++i) { - ast_value *asvalue; - if (!ast_istype(parser->globals[i], ast_value)) - continue; - asvalue = (ast_value*)(parser->globals[i]); - if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) { - if (strcmp(asvalue->name, "end_sys_globals") && - strcmp(asvalue->name, "end_sys_fields")) - { - retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE, - "unused global: `%s`", asvalue->name); - } - } - if (!ast_global_codegen(asvalue, ir, false)) { - con_out("failed to generate global %s\n", asvalue->name); - ir_builder_delete(ir); - return false; - } + if (hasvalue) { + ir_value *ifld; + ast_expression *subtype; + field->hasvalue = true; + subtype = field->expression.next; + ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype); + if (subtype->expression.vtype == TYPE_FIELD) + ifld->fieldtype = subtype->expression.next->expression.vtype; + else if (subtype->expression.vtype == TYPE_FUNCTION) + ifld->outtype = subtype->expression.next->expression.vtype; + (void)!ir_value_set_field(field->ir_v, ifld); } - for (i = 0; i < vec_size(parser->imm_float); ++i) { - if (!ast_global_codegen(parser->imm_float[i], ir, false)) { - con_out("failed to generate global %s\n", parser->imm_float[i]->name); - ir_builder_delete(ir); - return false; - } + } + for (i = 0; i < vec_size(parser->globals); ++i) { + ast_value *asvalue; + if (!ast_istype(parser->globals[i], ast_value)) + continue; + asvalue = (ast_value*)(parser->globals[i]); + if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) { + retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE, + "unused global: `%s`", asvalue->name); + } + if (!ast_global_codegen(asvalue, ir, false)) { + con_out("failed to generate global %s\n", asvalue->name); + ir_builder_delete(ir); + return false; } - for (i = 0; i < vec_size(parser->imm_string); ++i) { - if (!ast_global_codegen(parser->imm_string[i], ir, false)) { - con_out("failed to generate global %s\n", parser->imm_string[i]->name); - ir_builder_delete(ir); - return false; - } + } + for (i = 0; i < vec_size(parser->imm_float); ++i) { + if (!ast_global_codegen(parser->imm_float[i], ir, false)) { + con_out("failed to generate global %s\n", parser->imm_float[i]->name); + ir_builder_delete(ir); + return false; } - for (i = 0; i < vec_size(parser->imm_vector); ++i) { - if (!ast_global_codegen(parser->imm_vector[i], ir, false)) { - con_out("failed to generate global %s\n", parser->imm_vector[i]->name); - ir_builder_delete(ir); - return false; - } + } + for (i = 0; i < vec_size(parser->imm_string); ++i) { + if (!ast_global_codegen(parser->imm_string[i], ir, false)) { + con_out("failed to generate global %s\n", parser->imm_string[i]->name); + ir_builder_delete(ir); + return false; } - for (i = 0; i < vec_size(parser->globals); ++i) { - ast_value *asvalue; - if (!ast_istype(parser->globals[i], ast_value)) - continue; - asvalue = (ast_value*)(parser->globals[i]); - if (asvalue->setter) { - if (!ast_global_codegen(asvalue->setter, ir, false) || - !ast_function_codegen(asvalue->setter->constval.vfunc, ir) || - !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func)) - { - printf("failed to generate setter for %s\n", asvalue->name); - ir_builder_delete(ir); - return false; - } - } - if (asvalue->getter) { - if (!ast_global_codegen(asvalue->getter, ir, false) || - !ast_function_codegen(asvalue->getter->constval.vfunc, ir) || - !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func)) - { - printf("failed to generate getter for %s\n", asvalue->name); - ir_builder_delete(ir); - return false; - } - } + } + for (i = 0; i < vec_size(parser->imm_vector); ++i) { + if (!ast_global_codegen(parser->imm_vector[i], ir, false)) { + con_out("failed to generate global %s\n", parser->imm_vector[i]->name); + ir_builder_delete(ir); + return false; } - for (i = 0; i < vec_size(parser->fields); ++i) { - ast_value *asvalue; - asvalue = (ast_value*)(parser->fields[i]->expression.next); + } + for (i = 0; i < vec_size(parser->globals); ++i) { + ast_value *asvalue; + if (!ast_istype(parser->globals[i], ast_value)) + continue; + asvalue = (ast_value*)(parser->globals[i]); + if (!ast_generate_accessors(asvalue, ir)) { + ir_builder_delete(ir); + return false; + } + } + for (i = 0; i < vec_size(parser->fields); ++i) { + ast_value *asvalue; + asvalue = (ast_value*)(parser->fields[i]->expression.next); - if (!ast_istype((ast_expression*)asvalue, ast_value)) - continue; - if (asvalue->expression.vtype != TYPE_ARRAY) - continue; - if (asvalue->setter) { - if (!ast_global_codegen(asvalue->setter, ir, false) || - !ast_function_codegen(asvalue->setter->constval.vfunc, ir) || - !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func)) - { - printf("failed to generate setter for %s\n", asvalue->name); - ir_builder_delete(ir); - return false; - } - } - if (asvalue->getter) { - if (!ast_global_codegen(asvalue->getter, ir, false) || - !ast_function_codegen(asvalue->getter->constval.vfunc, ir) || - !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func)) - { - printf("failed to generate getter for %s\n", asvalue->name); - ir_builder_delete(ir); - return false; - } - } + if (!ast_istype((ast_expression*)asvalue, ast_value)) + continue; + if (asvalue->expression.vtype != TYPE_ARRAY) + continue; + if (!ast_generate_accessors(asvalue, ir)) { + ir_builder_delete(ir); + return false; } - for (i = 0; i < vec_size(parser->functions); ++i) { - if (!ast_function_codegen(parser->functions[i], ir)) { - con_out("failed to generate function %s\n", parser->functions[i]->name); - ir_builder_delete(ir); - return false; - } + } + for (i = 0; i < vec_size(parser->functions); ++i) { + if (!ast_function_codegen(parser->functions[i], ir)) { + con_out("failed to generate function %s\n", parser->functions[i]->name); + ir_builder_delete(ir); + return false; } - if (opts_dump) - ir_builder_dump(ir, con_out); - for (i = 0; i < vec_size(parser->functions); ++i) { - if (!ir_function_finalize(parser->functions[i]->ir_func)) { - con_out("failed to finalize function %s\n", parser->functions[i]->name); - ir_builder_delete(ir); - return false; - } + } + if (opts.dump) + ir_builder_dump(ir, con_out); + for (i = 0; i < vec_size(parser->functions); ++i) { + if (!ir_function_finalize(parser->functions[i]->ir_func)) { + con_out("failed to finalize function %s\n", parser->functions[i]->name); + ir_builder_delete(ir); + return false; } + } + + if (compile_Werrors) { + con_out("*** there were warnings treated as errors\n"); + compile_show_werrors(); + retval = false; + } - if (retval) { - if (opts_dumpfin) - ir_builder_dump(ir, con_out); + if (retval) { + if (opts.dumpfin) + ir_builder_dump(ir, con_out); - generate_checksum(parser); + generate_checksum(parser); - if (!ir_builder_generate(ir, output)) { - con_out("*** failed to generate output file\n"); - ir_builder_delete(ir); - return false; - } + if (!ir_builder_generate(ir, output)) { + con_out("*** failed to generate output file\n"); + ir_builder_delete(ir); + return false; } - - ir_builder_delete(ir); - return retval; } - con_out("*** there were compile errors\n"); - return false; + ir_builder_delete(ir); + return retval; }