X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=parser.c;h=3c5d237e17500ed86acd2e66ad80f937e55e552b;hp=72fa486ca0f07020f3dce7a568faf34739855f9b;hb=4079835c7e75bb2b6a20ebb1f1e91e4c8c362c99;hpb=8e30d7cb86e5257f93c6d78e93a9d0ef257df22d diff --git a/parser.c b/parser.c index 72fa486..3c5d237 100644 --- a/parser.c +++ b/parser.c @@ -13,12 +13,15 @@ typedef struct { lex_file *lex; int tok; - MEM_VECTOR_MAKE(varentry_t, globals); - MEM_VECTOR_MAKE(varentry_t, fields); - MEM_VECTOR_MAKE(ast_function*, functions); - MEM_VECTOR_MAKE(ast_value*, imm_float); - MEM_VECTOR_MAKE(ast_value*, imm_string); - MEM_VECTOR_MAKE(ast_value*, imm_vector); + varentry_t *globals; + varentry_t *fields; + ast_function **functions; + ast_value **imm_float; + ast_value **imm_string; + ast_value **imm_vector; + + /* must be deleted first, they reference immediates and values */ + ast_value **accessors; ast_value *imm_float_zero; ast_value *imm_vector_zero; @@ -27,11 +30,14 @@ typedef struct { size_t crc_fields; ast_function *function; - MEM_VECTOR_MAKE(varentry_t, locals); + varentry_t *locals; size_t blocklocal; size_t errors; + /* we store the '=' operator info */ + const oper_info *assign_op; + /* TYPE_FIELD -> parser_find_fields is used instead of find_var * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard * anything else: type error @@ -39,19 +45,13 @@ typedef struct { qcint memberof; } parser_t; -MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals) -MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields) -MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float) -MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string) -MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector) -MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals) -MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions) static bool GMQCC_WARN parser_pop_local(parser_t *parser); -static bool parse_variable(parser_t *parser, ast_block *localblock); +static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields); 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_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); @@ -62,7 +62,7 @@ static void parseerror(parser_t *parser, const char *fmt, ...) parser->errors++; va_start(ap, fmt); - vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap); + con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap); va_end(ap); } @@ -81,7 +81,7 @@ static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char * } va_start(ap, fmt); - vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap); + con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap); va_end(ap); return opts_werror; @@ -99,7 +99,7 @@ static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, .. lvl = LVL_ERROR; va_start(ap, fmt); - vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap); + con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap); va_end(ap); return opts_werror; @@ -166,17 +166,15 @@ static ast_value* parser_const_float(parser_t *parser, double d) { size_t i; ast_value *out; - for (i = 0; i < parser->imm_float_count; ++i) { - if (parser->imm_float[i]->constval.vfloat == d) + for (i = 0; i < vec_size(parser->imm_float); ++i) { + const double compare = parser->imm_float[i]->constval.vfloat; + if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0) return parser->imm_float[i]; } out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT); out->isconst = true; out->constval.vfloat = d; - if (!parser_t_imm_float_add(parser, out)) { - ast_value_delete(out); - return NULL; - } + vec_push(parser->imm_float, out); return out; } @@ -202,17 +200,14 @@ static ast_value* parser_const_string(parser_t *parser, const char *str) { size_t i; ast_value *out; - for (i = 0; i < parser->imm_string_count; ++i) { + for (i = 0; i < vec_size(parser->imm_string); ++i) { if (!strcmp(parser->imm_string[i]->constval.vstring, str)) return parser->imm_string[i]; } out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING); out->isconst = true; out->constval.vstring = parser_strdup(str); - if (!parser_t_imm_string_add(parser, out)) { - ast_value_delete(out); - return NULL; - } + vec_push(parser->imm_string, out); return out; } @@ -220,17 +215,14 @@ static ast_value* parser_const_vector(parser_t *parser, vector v) { size_t i; ast_value *out; - for (i = 0; i < parser->imm_vector_count; ++i) { + for (i = 0; i < vec_size(parser->imm_vector); ++i) { if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v))) return parser->imm_vector[i]; } out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR); out->isconst = true; out->constval.vvec = v; - if (!parser_t_imm_vector_add(parser, out)) { - ast_value_delete(out); - return NULL; - } + vec_push(parser->imm_vector, out); return out; } @@ -253,7 +245,7 @@ static ast_value* parser_const_vector_0(parser_t *parser) static ast_expression* parser_find_field(parser_t *parser, const char *name) { size_t i; - for (i = 0; i < parser->fields_count; ++i) { + for (i = 0; i < vec_size(parser->fields); ++i) { if (!strcmp(parser->fields[i].name, name)) return parser->fields[i].var; } @@ -263,7 +255,7 @@ static ast_expression* parser_find_field(parser_t *parser, const char *name) static ast_expression* parser_find_global(parser_t *parser, const char *name) { size_t i; - for (i = 0; i < parser->globals_count; ++i) { + for (i = 0; i < vec_size(parser->globals); ++i) { if (!strcmp(parser->globals[i].name, name)) return parser->globals[i].var; } @@ -277,7 +269,7 @@ static ast_expression* parser_find_param(parser_t *parser, const char *name) if (!parser->function) return NULL; fun = parser->function->vtype; - for (i = 0; i < fun->expression.params_count; ++i) { + for (i = 0; i < vec_size(fun->expression.params); ++i) { if (!strcmp(fun->expression.params[i]->name, name)) return (ast_expression*)(fun->expression.params[i]); } @@ -288,7 +280,7 @@ static ast_expression* parser_find_local(parser_t *parser, const char *name, siz { size_t i; *isparam = false; - for (i = parser->locals_count; i > upto;) { + for (i = vec_size(parser->locals); i > upto;) { --i; if (!strcmp(parser->locals[i].name, name)) return parser->locals[i].var; @@ -306,131 +298,6 @@ static ast_expression* parser_find_var(parser_t *parser, const char *name) return v; } -typedef struct { - MEM_VECTOR_MAKE(ast_value*, p); -} paramlist_t; -MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p) - -static ast_value *parse_type(parser_t *parser, int basetype, bool *isfunc) -{ - paramlist_t params; - ast_value *var; - lex_ctx ctx = parser_ctx(parser); - int vtype = basetype; - int temptype; - size_t i; - bool variadic = false; - - MEM_VECTOR_INIT(¶ms, p); - - *isfunc = false; - - if (parser->tok == '(') { - *isfunc = true; - while (true) { - ast_value *param; - ast_value *fld; - bool isfield = false; - bool isfuncparam = false; - - if (!parser_next(parser)) - goto on_error; - - if (parser->tok == ')') - break; - - if (parser->tok == '.') { - isfield = true; - if (!parser_next(parser)) { - parseerror(parser, "expected field parameter type"); - goto on_error; - } - } - - if (parser->tok == TOKEN_DOTS) { - /* variadic args */ - variadic = true; - if (!parser_next(parser)) - goto on_error; - if (parser->tok != ')') { - parseerror(parser, "`...` must be the last parameter of a variadic function declaration"); - goto on_error; - } - if (opts_standard == COMPILER_QCC) { - if (parsewarning(parser, WARN_EXTENSIONS, "variadic functions are not available in this standard")) - goto on_error; - } - break; - } - - temptype = parser_token(parser)->constval.t; - if (!parser_next(parser)) - goto on_error; - - param = parse_type(parser, temptype, &isfuncparam); - - if (!param) - goto on_error; - - if (parser->tok == TOKEN_IDENT) { - /* named parameter */ - if (!ast_value_set_name(param, parser_tokval(parser))) - goto on_error; - if (!parser_next(parser)) - goto on_error; - } - - /* This comes before the isfield part! */ - if (isfuncparam) { - ast_value *fval = ast_value_new(ast_ctx(param), param->name, TYPE_FUNCTION); - if (!fval) { - ast_delete(param); - goto on_error; - } - fval->expression.next = (ast_expression*)param; - MEM_VECTOR_MOVE(¶m->expression, params, &fval->expression, params); - fval->expression.variadic = param->expression.variadic; - param = fval; - } - - if (isfield) { - fld = ast_value_new(ctx, param->name, TYPE_FIELD); - fld->expression.next = (ast_expression*)param; - param = fld; - } - - if (!paramlist_t_p_add(¶ms, param)) { - parseerror(parser, "Out of memory while parsing typename"); - goto on_error; - } - - if (parser->tok == ',') - continue; - if (parser->tok == ')') - break; - parseerror(parser, "Unexpected token"); - goto on_error; - } - if (!parser_next(parser)) - goto on_error; - } - - if (params.p_count > 8) - parseerror(parser, "more than 8 parameters are currently not supported"); - - var = ast_value_new(ctx, "", vtype); - if (!var) - goto on_error; - var->expression.variadic = variadic; - MEM_VECTOR_MOVE(¶ms, p, &var->expression, params); - return var; -on_error: - for (i = 0; i < params.p_count; ++i) - ast_value_delete(params.p[i]); - MEM_VECTOR_CLEAR(¶ms, p); - return NULL; -} - typedef struct { size_t etype; /* 0 = expression, others are operators */ @@ -442,11 +309,13 @@ typedef struct } sy_elem; typedef struct { - MEM_VECTOR_MAKE(sy_elem, out); - MEM_VECTOR_MAKE(sy_elem, ops); + sy_elem *out; + sy_elem *ops; } shunt; -MEM_VEC_FUNCTIONS(shunt, sy_elem, out) -MEM_VEC_FUNCTIONS(shunt, sy_elem, ops) + +#define SY_PAREN_EXPR '(' +#define SY_PAREN_FUNC 'f' +#define SY_PAREN_INDEX '[' static sy_elem syexp(lex_ctx ctx, ast_expression *v) { sy_elem e; @@ -498,6 +367,44 @@ static sy_elem syparen(lex_ctx ctx, int p, size_t off) { # define DEBUGSHUNTDO(x) #endif +/* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n], + * so we need to rotate it to become ent.(foo[n]). + */ +static bool rotate_entfield_array_index_nodes(ast_expression **out) +{ + ast_array_index *index; + ast_entfield *entfield; + + ast_value *field; + ast_expression *sub; + ast_expression *entity; + + lex_ctx ctx = ast_ctx(*out); + + if (!ast_istype(*out, ast_array_index)) + return false; + index = (ast_array_index*)*out; + + if (!ast_istype(index->array, ast_entfield)) + return false; + entfield = (ast_entfield*)index->array; + + if (!ast_istype(entfield->field, ast_value)) + return false; + field = (ast_value*)entfield->field; + + sub = index->index; + entity = entfield->entity; + + ast_delete(index); + + index = ast_array_index_new(ctx, (ast_expression*)field, sub); + entfield = ast_entfield_new(ctx, entity, (ast_expression*)index); + *out = (ast_expression*)entfield; + + return true; +} + static bool parser_sy_pop(parser_t *parser, shunt *sy) { const oper_info *op; @@ -506,40 +413,43 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) ast_expression *exprs[3]; ast_block *blocks[3]; ast_value *asvalue[3]; - size_t i, assignop; + size_t i, assignop, addop; qcint generated_op = 0; - if (!sy->ops_count) { + char ty1[1024]; + char ty2[1024]; + + if (!vec_size(sy->ops)) { parseerror(parser, "internal error: missing operator"); return false; } - if (sy->ops[sy->ops_count-1].paren) { + if (vec_last(sy->ops).paren) { parseerror(parser, "unmatched parenthesis"); return false; } - op = &operators[sy->ops[sy->ops_count-1].etype - 1]; - ctx = sy->ops[sy->ops_count-1].ctx; + op = &operators[vec_last(sy->ops).etype - 1]; + ctx = vec_last(sy->ops).ctx; - DEBUGSHUNTDO(printf("apply %s\n", op->op)); + DEBUGSHUNTDO(con_out("apply %s\n", op->op)); - if (sy->out_count < op->operands) { - parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count, + if (vec_size(sy->out) < op->operands) { + parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out), op->op, (int)op->id); return false; } - sy->ops_count--; + vec_shrinkby(sy->ops, 1); - sy->out_count -= op->operands; + vec_shrinkby(sy->out, op->operands); for (i = 0; i < op->operands; ++i) { - exprs[i] = sy->out[sy->out_count+i].out; - blocks[i] = sy->out[sy->out_count+i].block; + exprs[i] = sy->out[vec_size(sy->out)+i].out; + blocks[i] = sy->out[vec_size(sy->out)+i].block; asvalue[i] = (ast_value*)exprs[i]; } - if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) { + if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) { parseerror(parser, "internal error: operator cannot be applied on empty blocks"); return false; } @@ -578,22 +488,44 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) } break; + case opid1('['): + if (exprs[0]->expression.vtype != TYPE_ARRAY && + !(exprs[0]->expression.vtype == TYPE_FIELD && + exprs[0]->expression.next->expression.vtype == TYPE_ARRAY)) + { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + parseerror(parser, "cannot index value of type %s", ty1); + return false; + } + if (exprs[1]->expression.vtype != TYPE_FLOAT) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + parseerror(parser, "index must be of type float, not %s", ty1); + return false; + } + out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]); + if (rotate_entfield_array_index_nodes(&out)) + { + 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"); + } + } + break; + case opid1(','): if (blocks[0]) { - if (!ast_block_exprs_add(blocks[0], exprs[1])) - return false; + vec_push(blocks[0]->exprs, exprs[1]); } else { blocks[0] = ast_block_new(ctx); - if (!ast_block_exprs_add(blocks[0], exprs[0]) || - !ast_block_exprs_add(blocks[0], exprs[1])) - { - return false; - } + vec_push(blocks[0]->exprs, exprs[0]); + vec_push(blocks[0]->exprs, exprs[1]); } if (!ast_block_set_type(blocks[0], exprs[1])) return false; - sy->out[sy->out_count++] = syblock(ctx, blocks[0]); + vec_push(sy->out, syblock(ctx, blocks[0])); return true; case opid2('-','P'): @@ -826,7 +758,7 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) return false; } if (opts_standard == COMPILER_GMQCC) - printf("TODO: early out logic\n"); + 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)))); @@ -834,6 +766,19 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]); break; + case opid2('?',':'): + 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); + return false; + } + if (CanConstFold1(exprs[0])) + out = (ConstF(0) ? exprs[1] : exprs[2]); + else + out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]); + break; + case opid1('>'): generated_op += 1; /* INSTR_GT */ case opid1('<'): @@ -872,10 +817,15 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) case opid1('='): if (ast_istype(exprs[0], ast_entfield)) { ast_expression *field = ((ast_entfield*)exprs[0])->field; - assignop = type_storep_instr[exprs[0]->expression.vtype]; + if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) && + exprs[0]->expression.vtype == TYPE_FIELD && + exprs[0]->expression.next->expression.vtype == TYPE_VECTOR) + { + assignop = type_storep_instr[TYPE_VECTOR]; + } + else + assignop = type_storep_instr[exprs[0]->expression.vtype]; if (!ast_compare_type(field->expression.next, exprs[1])) { - char ty1[1024]; - char ty2[1024]; ast_type_to_string(field->expression.next, ty1, sizeof(ty1)); ast_type_to_string(exprs[1], ty2, sizeof(ty2)); if (opts_standard == COMPILER_QCC && @@ -894,10 +844,22 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) } else { - assignop = type_store_instr[exprs[0]->expression.vtype]; - if (!ast_compare_type(exprs[0], exprs[1])) { - char ty1[1024]; - char ty2[1024]; + if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) && + exprs[0]->expression.vtype == TYPE_FIELD && + exprs[0]->expression.next->expression.vtype == TYPE_VECTOR) + { + assignop = type_store_instr[TYPE_VECTOR]; + } + else { + assignop = type_store_instr[exprs[0]->expression.vtype]; + } + + if (assignop == AINSTR_END) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + ast_type_to_string(exprs[1], ty2, sizeof(ty2)); + parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1); + } + 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 && @@ -916,14 +878,59 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) } out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]); break; + case opid3('+','+','P'): + case opid3('-','-','P'): + /* prefix ++ */ + if (exprs[0]->expression.vtype != TYPE_FLOAT) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + parseerror(parser, "invalid type for prefix increment: %s", ty1); + return false; + } + if (op->id == opid3('+','+','P')) + addop = INSTR_ADD_F; + else + addop = INSTR_SUB_F; + if (ast_istype(exprs[0], ast_entfield)) { + out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop, + exprs[0], + (ast_expression*)parser_const_float(parser, 1)); + } else { + out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop, + exprs[0], + (ast_expression*)parser_const_float(parser, 1)); + } + break; + case opid3('S','+','+'): + case opid3('S','-','-'): + /* prefix ++ */ + if (exprs[0]->expression.vtype != TYPE_FLOAT) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + parseerror(parser, "invalid type for prefix increment: %s", ty1); + return false; + } + if (op->id == opid3('+','+','P')) + addop = INSTR_ADD_F; + else + addop = INSTR_SUB_F; + if (ast_istype(exprs[0], ast_entfield)) { + out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop, + exprs[0], + (ast_expression*)parser_const_float(parser, 1)); + } else { + out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop, + exprs[0], + (ast_expression*)parser_const_float(parser, 1)); + } + break; case opid2('+','='): case opid2('-','='): if (exprs[0]->expression.vtype != exprs[1]->expression.vtype || (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) ) { + ast_type_to_string(exprs[0], ty1, sizeof(ty1)); + ast_type_to_string(exprs[1], ty2, sizeof(ty2)); parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s", - type_name[exprs[0]->expression.vtype], - type_name[exprs[1]->expression.vtype]); + ty1, ty2); return false; } if (ast_istype(exprs[0], ast_entfield)) @@ -956,8 +963,8 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy) return false; } - DEBUGSHUNTDO(printf("applied %s\n", op->op)); - sy->out[sy->out_count++] = syexp(ctx, out); + DEBUGSHUNTDO(con_out("applied %s\n", op->op)); + vec_push(sy->out, syexp(ctx, out)); return true; } @@ -970,8 +977,8 @@ static bool parser_close_call(parser_t *parser, shunt *sy) size_t fid; size_t paramcount; - sy->ops_count--; - fid = sy->ops[sy->ops_count].off; + vec_shrinkby(sy->ops, 1); + fid = sy->ops[vec_size(sy->ops)].off; /* out[fid] is the function * everything above is parameters... @@ -980,37 +987,34 @@ static bool parser_close_call(parser_t *parser, shunt *sy) * more = ast_block */ - if (sy->out_count < 1 || sy->out_count <= fid) { + if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) { parseerror(parser, "internal error: function call needs function and parameter list..."); return false; } fun = sy->out[fid].out; - call = ast_call_new(sy->ops[sy->ops_count].ctx, fun); + call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun); if (!call) { parseerror(parser, "out of memory"); return false; } - if (fid+1 == sy->out_count) { + if (fid+1 == vec_size(sy->out)) { /* no arguments */ paramcount = 0; - } else if (fid+2 == sy->out_count) { + } else if (fid+2 == vec_size(sy->out)) { ast_block *params; - sy->out_count--; - params = sy->out[sy->out_count].block; + vec_shrinkby(sy->out, 1); + params = sy->out[vec_size(sy->out)].block; if (!params) { /* 1 param */ paramcount = 1; - if (!ast_call_params_add(call, sy->out[sy->out_count].out)) { - ast_delete(sy->out[sy->out_count].out); - parseerror(parser, "out of memory"); - return false; - } + vec_push(call->params, sy->out[vec_size(sy->out)].out); } else { - paramcount = params->exprs_count; - MEM_VECTOR_MOVE(params, exprs, call, params); + paramcount = vec_size(params->exprs); + call->params = params->exprs; + params->exprs = NULL; ast_delete(params); } if (!ast_call_check_types(call)) @@ -1032,12 +1036,12 @@ static bool parser_close_call(parser_t *parser, shunt *sy) parseerror(parser, "could not determine function return type"); return false; } else { - if (fun->expression.params_count != paramcount && + if (vec_size(fun->expression.params) != paramcount && !(fun->expression.variadic && - fun->expression.params_count < paramcount)) + vec_size(fun->expression.params) < paramcount)) { ast_value *fval; - const char *fewmany = (fun->expression.params_count > paramcount) ? "few" : "many"; + 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) @@ -1045,12 +1049,12 @@ static bool parser_close_call(parser_t *parser, shunt *sy) if (fval) parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n" " -> `%s` has been declared here: %s:%i", - fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount, + fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, 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)fun->expression.params_count, (int)paramcount, + fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); return false; } @@ -1060,13 +1064,13 @@ static bool parser_close_call(parser_t *parser, shunt *sy) return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS, "too %s parameters for call to %s: expected %i, got %i\n" " -> `%s` has been declared here: %s:%i", - fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount, + fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); 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)fun->expression.params_count, (int)paramcount, + fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount, fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line); } } @@ -1077,26 +1081,36 @@ static bool parser_close_call(parser_t *parser, shunt *sy) static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only) { - if (!sy->ops_count) { + if (!vec_size(sy->ops)) { parseerror(parser, "unmatched closing paren"); return false; } /* this would for bit a + (x) because there are no operators inside (x) - if (sy->ops[sy->ops_count-1].paren == 1) { + if (sy->ops[vec_size(sy->ops)-1].paren == 1) { parseerror(parser, "empty parenthesis expression"); return false; } */ - while (sy->ops_count) { - if (sy->ops[sy->ops_count-1].paren == 'f') { + while (vec_size(sy->ops)) { + if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) { if (!parser_close_call(parser, sy)) return false; break; } - if (sy->ops[sy->ops_count-1].paren == 1) { - sy->ops_count--; + if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) { + vec_shrinkby(sy->ops, 1); return !functions_only; } + if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) { + if (functions_only) + return false; + /* pop off the parenthesis */ + vec_shrinkby(sy->ops, 1); + /* then apply the index operator */ + if (!parser_sy_pop(parser, sy)) + return false; + return true; + } if (!parser_sy_pop(parser, sy)) return false; } @@ -1125,9 +1139,10 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma * end of a condition is an unmatched closing paren */ int parens = 0; + int ternaries = 0; - MEM_VECTOR_INIT(&sy, out); - MEM_VECTOR_INIT(&sy, ops); + sy.out = NULL; + sy.ops = NULL; parser->lex->flags.noops = false; @@ -1179,11 +1194,8 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma } if (ast_istype(var, ast_value)) ((ast_value*)var)->uses++; - if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser))); + vec_push(sy.out, syexp(parser_ctx(parser), var)); + DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser))); } else if (parser->tok == TOKEN_FLOATCONST) { ast_value *val; @@ -1195,11 +1207,8 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma val = parser_const_float(parser, (parser_token(parser)->constval.f)); if (!val) return false; - if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f)); + vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); + DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f)); } else if (parser->tok == TOKEN_INTCONST) { ast_value *val; @@ -1211,11 +1220,8 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma val = parser_const_float(parser, (double)(parser_token(parser)->constval.i)); if (!val) return false; - if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i)); + vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); + DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i)); } else if (parser->tok == TOKEN_STRINGCONST) { ast_value *val; @@ -1227,11 +1233,8 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma val = parser_const_string(parser, parser_tokval(parser)); if (!val) return false; - if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push string\n")); + vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val)); + DEBUGSHUNTDO(con_out("push string\n")); } else if (parser->tok == TOKEN_VECTORCONST) { ast_value *val; @@ -1243,11 +1246,8 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma val = parser_const_vector(parser, parser_token(parser)->constval.v); if (!val) return false; - if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push '%g %g %g'\n", + 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, parser_token(parser)->constval.v.y, parser_token(parser)->constval.v.z)); @@ -1256,9 +1256,13 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma parseerror(parser, "internal error: '(' should be classified as operator"); goto onerr; } + else if (parser->tok == '[') { + parseerror(parser, "internal error: '[' should be classified as operator"); + goto onerr; + } else if (parser->tok == ')') { if (wantop) { - DEBUGSHUNTDO(printf("do[op] )\n")); + DEBUGSHUNTDO(con_out("do[op] )\n")); --parens; if (parens < 0) break; @@ -1267,7 +1271,7 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma if (!parser_close_paren(parser, &sy, false)) goto onerr; } else { - DEBUGSHUNTDO(printf("do[nop] )\n")); + DEBUGSHUNTDO(con_out("do[nop] )\n")); --parens; if (parens < 0) break; @@ -1277,6 +1281,16 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma } wantop = true; } + else if (parser->tok == ']') { + if (!wantop) + parseerror(parser, "operand expected"); + --parens; + if (parens < 0) + break; + if (!parser_close_paren(parser, &sy, false)) + goto onerr; + wantop = true; + } else if (parser->tok != TOKEN_OPERATOR) { if (wantop) { parseerror(parser, "expected operator or end of statement"); @@ -1287,13 +1301,12 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma else { /* classify the operator */ - /* TODO: suffix operators */ const oper_info *op; const oper_info *olast = NULL; size_t o; for (o = 0; o < operator_count; ++o) { if ((!(operators[o].flags & OP_PREFIX) == wantop) && - !(operators[o].flags & OP_SUFFIX) && /* remove this */ + /* !(operators[o].flags & OP_SUFFIX) && / * remove this */ !strcmp(parser_tokval(parser), operators[o].op)) { break; @@ -1313,8 +1326,14 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma break; } - if (sy.ops_count && !sy.ops[sy.ops_count-1].paren) - olast = &operators[sy.ops[sy.ops_count-1].etype-1]; + /* a colon without a pervious question mark cannot be a ternary */ + if (!ternaries && op->id == opid2(':','?')) { + parser->tok = ':'; + break; + } + + if (vec_size(sy.ops) && !vec_last(sy.ops).paren) + olast = &operators[vec_last(sy.ops).etype-1]; while (olast && ( (op->prec < olast->prec) || @@ -1322,15 +1341,15 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma { if (!parser_sy_pop(parser, &sy)) goto onerr; - if (sy.ops_count && !sy.ops[sy.ops_count-1].paren) - olast = &operators[sy.ops[sy.ops_count-1].etype-1]; + if (vec_size(sy.ops) && !vec_last(sy.ops).paren) + olast = &operators[vec_last(sy.ops).etype-1]; else olast = NULL; } if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) { /* for gmqcc standard: open up the namespace of the previous type */ - ast_expression *prevex = sy.out[sy.out_count-1].out; + ast_expression *prevex = vec_last(sy.out).out; if (!prevex) { parseerror(parser, "unexpected member operator"); goto onerr; @@ -1348,57 +1367,72 @@ static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma if (op->id == opid1('(')) { if (wantop) { - DEBUGSHUNTDO(printf("push [op] (\n")); + size_t sycount = vec_size(sy.out); + DEBUGSHUNTDO(con_out("push [op] (\n")); ++parens; /* we expected an operator, this is the function-call operator */ - if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) { - parseerror(parser, "out of memory"); - goto onerr; - } + vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1)); } else { ++parens; - if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) { - parseerror(parser, "out of memory"); - goto onerr; - } - DEBUGSHUNTDO(printf("push [nop] (\n")); + vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0)); + DEBUGSHUNTDO(con_out("push [nop] (\n")); } wantop = false; - } else { - DEBUGSHUNTDO(printf("push operator %s\n", op->op)); - if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op))) + } else if (op->id == opid1('[')) { + if (!wantop) { + parseerror(parser, "unexpected array subscript"); goto onerr; + } + ++parens; + /* 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)); + wantop = false; + --ternaries; + } else if (op->id == opid2(':','?')) { + /* we don't push this operator */ + wantop = false; + ++ternaries; + } else { + DEBUGSHUNTDO(con_out("push operator %s\n", op->op)); + vec_push(sy.ops, syop(parser_ctx(parser), op)); + wantop = !!(op->flags & OP_SUFFIX); } } if (!parser_next(parser)) { goto onerr; } - if (parser->tok == ';' || parser->tok == ']') { + if (parser->tok == ';' || + (!parens && parser->tok == ']')) + { break; } } - while (sy.ops_count) { + while (vec_size(sy.ops)) { if (!parser_sy_pop(parser, &sy)) goto onerr; } parser->lex->flags.noops = true; - if (!sy.out_count) { + if (!vec_size(sy.out)) { parseerror(parser, "empty expression"); expr = NULL; } else expr = sy.out[0].out; - MEM_VECTOR_CLEAR(&sy, out); - MEM_VECTOR_CLEAR(&sy, ops); - DEBUGSHUNTDO(printf("shunt done\n")); + vec_free(sy.out); + vec_free(sy.ops); + DEBUGSHUNTDO(con_out("shunt done\n")); return expr; onerr: parser->lex->flags.noops = true; - MEM_VECTOR_CLEAR(&sy, out); - MEM_VECTOR_CLEAR(&sy, ops); + vec_free(sy.out); + vec_free(sy.ops); return NULL; } @@ -1418,11 +1452,25 @@ static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out) { ast_ifthen *ifthen; ast_expression *cond, *ontrue, *onfalse = NULL; + bool ifnot = false; lex_ctx ctx = parser_ctx(parser); - /* skip the 'if' and check for opening paren */ - if (!parser_next(parser) || parser->tok != '(') { + (void)block; /* not touching */ + + /* skip the 'if', parse an optional 'not' and check for an opening paren */ + if (!parser_next(parser)) { + parseerror(parser, "expected condition or 'not'"); + return false; + } + if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) { + ifnot = true; + if (!parser_next(parser)) { + parseerror(parser, "expected condition in parenthesis"); + return false; + } + } + if (parser->tok != '(') { parseerror(parser, "expected 'if' condition in parenthesis"); return false; } @@ -1469,7 +1517,10 @@ static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out) } } - ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse); + if (ifnot) + ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue); + else + ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse); *out = (ast_expression*)ifthen; return true; } @@ -1481,6 +1532,8 @@ static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out lex_ctx ctx = parser_ctx(parser); + (void)block; /* not touching */ + /* skip the 'while' and check for opening paren */ if (!parser_next(parser) || parser->tok != '(') { parseerror(parser, "expected 'while' condition in parenthesis"); @@ -1525,6 +1578,8 @@ static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **o lex_ctx ctx = parser_ctx(parser); + (void)block; /* not touching */ + /* skip the 'do' and get the body */ if (!parser_next(parser)) { parseerror(parser, "expected loop body"); @@ -1596,7 +1651,7 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) lex_ctx ctx = parser_ctx(parser); oldblocklocal = parser->blocklocal; - parser->blocklocal = parser->locals_count; + parser->blocklocal = vec_size(parser->locals); initexpr = NULL; cond = NULL; @@ -1623,7 +1678,7 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) parseerror(parser, "TODO: assignment of new variables to be non-const"); goto onerr; - if (!parse_variable(parser, block)) + if (!parse_variable(parser, block, true)) goto onerr; } else if (parser->tok != ';') @@ -1692,7 +1747,7 @@ static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out) aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue); *out = (ast_expression*)aloop; - while (parser->locals_count > parser->blocklocal) + while (vec_size(parser->locals) > parser->blocklocal) retval = retval && parser_pop_local(parser); parser->blocklocal = oldblocklocal; return retval; @@ -1700,116 +1755,309 @@ onerr: if (initexpr) ast_delete(initexpr); if (cond) ast_delete(cond); if (increment) ast_delete(increment); - while (parser->locals_count > parser->blocklocal) + while (vec_size(parser->locals) > parser->blocklocal) (void)!parser_pop_local(parser); parser->blocklocal = oldblocklocal; return false; } -static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out) +static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out) { - if (parser->tok == TOKEN_TYPENAME) - { - /* local variable */ - if (!block) { - parseerror(parser, "cannot declare a variable from here"); - return false; - } - 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)) - return false; - *out = NULL; - return true; - } - else if (parser->tok == TOKEN_KEYWORD) - { - if (!strcmp(parser_tokval(parser), "local")) - { - 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)) - return false; - *out = NULL; - return true; - } - else if (!strcmp(parser_tokval(parser), "return")) - { - ast_expression *exp = NULL; - ast_return *ret = NULL; - ast_value *expected = parser->function->vtype; + ast_expression *exp = NULL; + ast_return *ret = NULL; + ast_value *expected = parser->function->vtype; - if (!parser_next(parser)) { - parseerror(parser, "expected return expression"); - return false; - } + (void)block; /* not touching */ - if (parser->tok != ';') { - exp = parse_expression(parser, false); - if (!exp) - return false; + if (!parser_next(parser)) { + parseerror(parser, "expected return expression"); + return false; + } - if (exp->expression.vtype != expected->expression.next->expression.vtype) { - parseerror(parser, "return with invalid expression"); - } + if (parser->tok != ';') { + exp = parse_expression(parser, false); + if (!exp) + return false; - ret = ast_return_new(exp->expression.node.context, exp); - if (!ret) { - ast_delete(exp); - return false; - } - } else { - if (!parser_next(parser)) - parseerror(parser, "parse error"); - if (expected->expression.next->expression.vtype != TYPE_VOID) { - 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); - } - *out = (ast_expression*)ret; - return true; - } - else if (!strcmp(parser_tokval(parser), "if")) - { - return parse_if(parser, block, out); - } - else if (!strcmp(parser_tokval(parser), "while")) - { - return parse_while(parser, block, out); + if (exp->expression.vtype != expected->expression.next->expression.vtype) { + parseerror(parser, "return with invalid expression"); } - else if (!strcmp(parser_tokval(parser), "do")) - { - return parse_dowhile(parser, block, out); + + ret = ast_return_new(exp->expression.node.context, exp); + if (!ret) { + ast_delete(exp); + return false; } - else if (!strcmp(parser_tokval(parser), "for")) - { - 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; - } - return parse_for(parser, block, out); + } else { + if (!parser_next(parser)) + parseerror(parser, "parse error"); + if (expected->expression.next->expression.vtype != TYPE_VOID) { + if (opts_standard != COMPILER_GMQCC) + (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value"); + else + parseerror(parser, "return without value"); } - parseerror(parser, "Unexpected keyword"); - return false; + ret = ast_return_new(parser_ctx(parser), NULL); } - else if (parser->tok == '{') - { - ast_block *inner; - inner = parse_block(parser, false); - if (!inner) - return false; - *out = (ast_expression*)inner; + *out = (ast_expression*)ret; + return true; +} + +static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue) +{ + lex_ctx ctx = parser_ctx(parser); + + (void)block; /* not touching */ + + if (!parser_next(parser) || parser->tok != ';') { + parseerror(parser, "expected semicolon"); + return false; + } + + if (!parser_next(parser)) + parseerror(parser, "parse error"); + + *out = (ast_expression*)ast_breakcont_new(ctx, is_continue); + return true; +} + +static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out) +{ + ast_expression *operand; + ast_value *opval; + ast_switch *switchnode; + ast_switch_case swcase; + + lex_ctx ctx = parser_ctx(parser); + + (void)block; /* not touching */ + + /* parse over the opening paren */ + if (!parser_next(parser) || parser->tok != '(') { + parseerror(parser, "expected switch operand in parenthesis"); + return false; + } + + /* parse into the expression */ + if (!parser_next(parser)) { + parseerror(parser, "expected switch operand"); + return false; + } + /* parse the operand */ + operand = parse_expression_leave(parser, false); + if (!operand) + return false; + + if (!OPTS_FLAG(RELAXED_SWITCH)) { + opval = (ast_value*)operand; + if (!ast_istype(operand, ast_value) || !opval->isconst) { + parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch"); + ast_unref(operand); + return false; + } + } + + switchnode = ast_switch_new(ctx, operand); + + /* closing paren */ + if (parser->tok != ')') { + ast_delete(switchnode); + parseerror(parser, "expected closing paren after 'switch' operand"); + return false; + } + + /* parse over the opening paren */ + if (!parser_next(parser) || parser->tok != '{') { + ast_delete(switchnode); + parseerror(parser, "expected list of cases"); + return false; + } + + if (!parser_next(parser)) { + ast_delete(switchnode); + parseerror(parser, "expected 'case' or 'default'"); + return false; + } + + /* 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); + parseerror(parser, "expected expression for case"); + return false; + } + swcase.value = parse_expression_leave(parser, false); + if (!swcase.value) { + ast_delete(switchnode); + parseerror(parser, "expected expression for case"); + return false; + } + } + else if (!strcmp(parser_tokval(parser), "default")) { + swcase.value = NULL; + if (!parser_next(parser)) { + ast_delete(switchnode); + parseerror(parser, "expected colon"); + return false; + } + } + + /* Now the colon and body */ + if (parser->tok != ':') { + if (swcase.value) ast_unref(swcase.value); + ast_delete(switchnode); + parseerror(parser, "expected colon"); + return false; + } + + if (!parser_next(parser)) { + if (swcase.value) ast_unref(swcase.value); + ast_delete(switchnode); + parseerror(parser, "expected statements or case"); + return false; + } + caseblock = ast_block_new(parser_ctx(parser)); + if (!caseblock) { + if (swcase.value) ast_unref(swcase.value); + ast_delete(switchnode); + return false; + } + swcase.code = (ast_expression*)caseblock; + vec_push(switchnode->cases, swcase); + while (true) { + ast_expression *expr; + if (parser->tok == '}') + break; + if (parser->tok == TOKEN_KEYWORD) { + if (!strcmp(parser_tokval(parser), "case") || + !strcmp(parser_tokval(parser), "default")) + { + break; + } + } + if (!parse_statement(parser, caseblock, &expr, true)) { + ast_delete(switchnode); + return false; + } + if (!expr) + continue; + vec_push(caseblock->exprs, expr); + } + } + + /* closing paren */ + if (parser->tok != '}') { + ast_delete(switchnode); + parseerror(parser, "expected closing paren of case list"); + return false; + } + if (!parser_next(parser)) { + ast_delete(switchnode); + parseerror(parser, "parse error after switch"); + return false; + } + *out = (ast_expression*)switchnode; + return true; +} + +static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases) +{ + if (parser->tok == TOKEN_TYPENAME || parser->tok == '.') + { + /* local variable */ + if (!block) { + parseerror(parser, "cannot declare a variable from here"); + return false; + } + 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)) + return false; + *out = NULL; + return true; + } + else if (parser->tok == TOKEN_KEYWORD) + { + if (!strcmp(parser_tokval(parser), "local")) + { + 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)) + return false; + *out = NULL; + return true; + } + else if (!strcmp(parser_tokval(parser), "return")) + { + return parse_return(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "if")) + { + return parse_if(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "while")) + { + return parse_while(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "do")) + { + return parse_dowhile(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "for")) + { + 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; + } + return parse_for(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "break")) + { + return parse_break_continue(parser, block, out, false); + } + else if (!strcmp(parser_tokval(parser), "continue")) + { + return parse_break_continue(parser, block, out, true); + } + else if (!strcmp(parser_tokval(parser), "switch")) + { + return parse_switch(parser, block, out); + } + else if (!strcmp(parser_tokval(parser), "case") || + !strcmp(parser_tokval(parser), "default")) + { + if (!allow_cases) { + parseerror(parser, "unexpected 'case' label"); + return false; + } + return true; + } + parseerror(parser, "Unexpected keyword"); + return false; + } + else if (parser->tok == '{') + { + ast_block *inner; + inner = parse_block(parser, false); + if (!inner) + return false; + *out = (ast_expression*)inner; return true; } else @@ -1831,16 +2079,19 @@ static bool parse_statement(parser_t *parser, ast_block *block, ast_expression * static bool GMQCC_WARN parser_pop_local(parser_t *parser) { + bool rv = true; varentry_t *ve; - parser->locals_count--; - ve = &parser->locals[parser->locals_count]; - if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) { - if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name)) - return false; + ve = &vec_last(parser->locals); + if (!parser->errors) { + if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) { + if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name)) + rv = false; + } } - mem_d(parser->locals[parser->locals_count].name); - return true; + mem_d(ve->name); + vec_pop(parser->locals); + return rv; } static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn) @@ -1849,7 +2100,7 @@ static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn bool retval = true; oldblocklocal = parser->blocklocal; - parser->blocklocal = parser->locals_count; + parser->blocklocal = vec_size(parser->locals); if (!parser_next(parser)) { /* skip the '{' */ parseerror(parser, "expected function body"); @@ -1862,18 +2113,14 @@ static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn if (parser->tok == '}') break; - if (!parse_statement(parser, block, &expr)) { + if (!parse_statement(parser, block, &expr, false)) { /* parseerror(parser, "parse error"); */ block = NULL; goto cleanup; } if (!expr) continue; - if (!ast_block_exprs_add(block, expr)) { - ast_delete(expr); - block = NULL; - goto cleanup; - } + vec_push(block->exprs, expr); } if (parser->tok != '}') { @@ -1881,8 +2128,8 @@ static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn } else { if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID) { - if (!block->exprs_count || - !ast_istype(block->exprs[block->exprs_count-1], ast_return)) + 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; @@ -1894,7 +2141,7 @@ static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn } cleanup: - while (parser->locals_count > parser->blocklocal) + while (vec_size(parser->locals) > parser->blocklocal) retval = retval && parser_pop_local(parser); parser->blocklocal = oldblocklocal; return !!block; @@ -1918,13 +2165,13 @@ static ast_expression* parse_statement_or_block(parser_t *parser) ast_expression *expr = NULL; if (parser->tok == '{') return (ast_expression*)parse_block(parser, false); - if (!parse_statement(parser, NULL, &expr)) + if (!parse_statement(parser, NULL, &expr, false)) return NULL; return expr; } /* loop method */ -static bool create_vector_members(parser_t *parser, ast_value *var, varentry_t *ve) +static bool create_vector_members(ast_value *var, varentry_t *ve) { size_t i; size_t len = strlen(var->name); @@ -2060,11 +2307,7 @@ static bool parse_function_body(parser_t *parser, ast_value *var) varent.var = (ast_expression*)thinkfunc; varent.name = util_strdup(thinkfunc->name); - if (!parser_t_globals_add(parser, varent)) { - ast_unref(framenum); - ast_delete(thinkfunc); - return false; - } + vec_push(parser->globals, varent); nextthink = (ast_expression*)thinkfunc; } else { @@ -2164,24 +2407,9 @@ static bool parse_function_body(parser_t *parser, ast_value *var) if (store_think) ast_delete(store_think); retval = false; } - if (retval && !ast_block_exprs_add(block, (ast_expression*)store_frame)) { - ast_delete(store_frame); - ast_delete(store_nextthink); - ast_delete(store_think); - retval = false; - } - - if (retval && !ast_block_exprs_add(block, (ast_expression*)store_nextthink)) { - ast_delete(store_nextthink); - ast_delete(store_think); - retval = false; - } - - if (retval && !ast_block_exprs_add(block, (ast_expression*)store_think) ) - { - ast_delete(store_think); - retval = false; - } + vec_push(block->exprs, (ast_expression*)store_frame); + vec_push(block->exprs, (ast_expression*)store_nextthink); + vec_push(block->exprs, (ast_expression*)store_think); } if (!retval) { @@ -2193,7 +2421,7 @@ static bool parse_function_body(parser_t *parser, ast_value *var) } } - for (parami = 0; parami < var->expression.params_count; ++parami) { + for (parami = 0; parami < vec_size(var->expression.params); ++parami) { size_t e; varentry_t ve[3]; ast_value *param = var->expression.params[parami]; @@ -2205,29 +2433,16 @@ static bool parse_function_body(parser_t *parser, ast_value *var) continue; } - if (!create_vector_members(parser, param, ve)) { + if (!create_vector_members(param, ve)) { ast_block_delete(block); return false; } for (e = 0; e < 3; ++e) { - if (!parser_t_locals_add(parser, ve[e])) - break; - if (!ast_block_collect(block, ve[e].var)) { - parser->locals_count--; - break; - } + vec_push(parser->locals, ve[e]); + ast_block_collect(block, ve[e].var); ve[e].var = NULL; /* collected */ } - if (e != 3) { - parser->locals -= e; - do { - mem_d(ve[e].name); - --e; - } while (e); - ast_block_delete(block); - return false; - } } func = ast_function_new(ast_ctx(var), var->name, var); @@ -2236,25 +2451,18 @@ static bool parse_function_body(parser_t *parser, ast_value *var) ast_block_delete(block); goto enderr; } - if (!parser_t_functions_add(parser, func)) { - parseerror(parser, "failed to allocate slot for function `%s`", var->name); - ast_block_delete(block); - goto enderrfn; - } + vec_push(parser->functions, func); parser->function = func; if (!parse_block_into(parser, block, true)) { ast_block_delete(block); - goto enderrfn2; + goto enderrfn; } - if (!ast_function_blocks_add(func, block)) { - ast_block_delete(block); - goto enderrfn2; - } + vec_push(func->blocks, block); parser->function = old; - while (parser->locals_count) + while (vec_size(parser->locals)) retval = retval && parser_pop_local(parser); if (parser->tok == ';') @@ -2263,426 +2471,995 @@ static bool parse_function_body(parser_t *parser, ast_value *var) parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)"); return retval; -enderrfn2: - parser->functions_count--; enderrfn: + vec_pop(parser->functions); ast_function_delete(func); var->constval.vfunc = NULL; enderr: - while (parser->locals_count) { - parser->locals_count--; - mem_d(parser->locals[parser->locals_count].name); + while (vec_size(parser->locals)) { + mem_d(vec_last(parser->locals).name); + vec_pop(parser->locals); } parser->function = old; return false; } -static bool parse_variable(parser_t *parser, ast_block *localblock) +static ast_expression *array_accessor_split( + parser_t *parser, + ast_value *array, + ast_value *index, + size_t middle, + ast_expression *left, + ast_expression *right + ) { - bool isfunc = false; - lex_ctx ctx; + ast_ifthen *ifthen; + ast_binary *cmp; - ast_value *var = NULL; - ast_value *fld = NULL; - bool cleanvar = false; + lex_ctx ctx = ast_ctx(array); - varentry_t varent; - varentry_t ve[3]; + if (!left || !right) { + if (left) ast_delete(left); + if (right) ast_delete(right); + return NULL; + } - ast_expression *olddecl; + cmp = ast_binary_new(ctx, INSTR_LT, + (ast_expression*)index, + (ast_expression*)parser_const_float(parser, middle)); + if (!cmp) { + ast_delete(left); + ast_delete(right); + parseerror(parser, "internal error: failed to create comparison for array setter"); + return NULL; + } - ast_value *typevar; + ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right); + if (!ifthen) { + ast_delete(cmp); /* will delete left and right */ + parseerror(parser, "internal error: failed to create conditional jump for array setter"); + return NULL; + } - bool hadproto; - bool isparam; + return (ast_expression*)ifthen; +} - bool retval = true; - bool isfield = false; +static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend) +{ + lex_ctx ctx = ast_ctx(array); - /* go */ + if (from+1 == afterend) { + /* set this value */ + ast_block *block; + ast_return *ret; + ast_array_index *subscript; + ast_store *st; + int assignop = type_store_instr[value->expression.vtype]; - int basetype; + if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR) + assignop = INSTR_STORE_V; - if (parser->tok == '.') { - isfield = true; - if (!parser_next(parser)) { - parseerror(parser, "expected typename for field definition"); - return false; + subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from)); + if (!subscript) + return NULL; + + st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value); + if (!st) { + ast_delete(subscript); + return NULL; } - } - basetype = parser_token(parser)->constval.t; + block = ast_block_new(ctx); + if (!block) { + ast_delete(st); + return NULL; + } - if (!parser_next(parser)) { - parseerror(parser, "expected variable definition"); - return false; + vec_push(block->exprs, (ast_expression*)st); + + ret = ast_return_new(ctx, NULL); + if (!ret) { + ast_delete(block); + return NULL; + } + + vec_push(block->exprs, (ast_expression*)ret); + + return (ast_expression*)block; + } else { + ast_expression *left, *right; + size_t diff = afterend - from; + size_t middle = from + diff/2; + left = array_setter_node(parser, array, index, value, from, middle); + right = array_setter_node(parser, array, index, value, middle, afterend); + return array_accessor_split(parser, array, index, middle, left, right); } +} - typevar = parse_type(parser, basetype, &isfunc); - if (!typevar) - return false; +static ast_expression *array_field_setter_node( + parser_t *parser, + ast_value *array, + ast_value *entity, + ast_value *index, + ast_value *value, + size_t from, + size_t afterend) +{ + lex_ctx ctx = ast_ctx(array); - while (true) - { - hadproto = false; - olddecl = NULL; - isparam = false; - varent.name = NULL; + if (from+1 == afterend) { + /* set this value */ + ast_block *block; + ast_return *ret; + ast_entfield *entfield; + ast_array_index *subscript; + ast_store *st; + int assignop = type_storep_instr[value->expression.vtype]; - ve[0].name = ve[1].name = ve[2].name = NULL; - ve[0].var = ve[1].var = ve[2].var = NULL; + if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR) + assignop = INSTR_STOREP_V; - ctx = parser_ctx(parser); - var = ast_value_copy(typevar); - cleanvar = true; + subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from)); + if (!subscript) + return NULL; - if (!var) { - parseerror(parser, "failed to create variable"); - retval = false; - goto cleanup; + entfield = ast_entfield_new_force(ctx, + (ast_expression*)entity, + (ast_expression*)subscript, + (ast_expression*)subscript); + if (!entfield) { + ast_delete(subscript); + return NULL; } - if (parser->tok != TOKEN_IDENT) { - parseerror(parser, "expected variable name"); - retval = false; - goto cleanup; + st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value); + if (!st) { + ast_delete(entfield); + return NULL; } - if (!localblock) { - bool was_end = false; - if (!strcmp(parser_tokval(parser), "end_sys_globals")) { - parser->crc_globals = parser->globals_count; - was_end = true; - } - else if (!strcmp(parser_tokval(parser), "end_sys_fields")) { - parser->crc_fields = parser->fields_count; - was_end = true; - } - if (isfield && was_end) { - if (parsewarning(parser, WARN_END_SYS_FIELDS, - "global '%s' hint should not be a field", - parser_tokval(parser))) - { - retval = false; - goto cleanup; - } - - } + block = ast_block_new(ctx); + if (!block) { + ast_delete(st); + return NULL; } - if (!ast_value_set_name(var, parser_tokval(parser))) { - parseerror(parser, "failed to set variable name\n"); - retval = false; - goto cleanup; + vec_push(block->exprs, (ast_expression*)st); + + ret = ast_return_new(ctx, NULL); + if (!ret) { + ast_delete(block); + return NULL; } - if (isfunc) { - /* a function was defined */ - ast_value *fval; - ast_value *proto = NULL; - bool dummy; + vec_push(block->exprs, (ast_expression*)ret); - if (!localblock) - olddecl = parser_find_global(parser, parser_tokval(parser)); - else - olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &dummy); - - if (olddecl) { - /* we had a prototype */ - if (!ast_istype(olddecl, ast_value)) { - /* vector v; - * void() v_x = {} - */ - parseerror(parser, "cannot declare a function with the same name as a vector's member: %s", - parser_tokval(parser)); - retval = false; - goto cleanup; - } + return (ast_expression*)block; + } else { + ast_expression *left, *right; + size_t diff = afterend - from; + size_t middle = from + diff/2; + left = array_field_setter_node(parser, array, entity, index, value, from, middle); + right = array_field_setter_node(parser, array, entity, index, value, middle, afterend); + return array_accessor_split(parser, array, index, middle, left, right); + } +} + +static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend) +{ + lex_ctx ctx = ast_ctx(array); + + if (from+1 == afterend) { + ast_return *ret; + ast_array_index *subscript; + + subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from)); + if (!subscript) + return NULL; + + ret = ast_return_new(ctx, (ast_expression*)subscript); + if (!ret) { + ast_delete(subscript); + return NULL; + } + + return (ast_expression*)ret; + } else { + ast_expression *left, *right; + size_t diff = afterend - from; + size_t middle = from + diff/2; + left = array_getter_node(parser, array, index, from, middle); + right = array_getter_node(parser, array, index, middle, afterend); + return array_accessor_split(parser, array, index, middle, left, right); + } +} + +static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out) +{ + ast_function *func = NULL; + ast_value *fval = NULL; + ast_block *body = NULL; + + fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION); + if (!fval) { + parseerror(parser, "failed to create accessor function value"); + return false; + } + + func = ast_function_new(ast_ctx(array), funcname, fval); + if (!func) { + ast_delete(fval); + parseerror(parser, "failed to create accessor function node"); + return false; + } + + body = ast_block_new(ast_ctx(array)); + if (!body) { + parseerror(parser, "failed to create block for array accessor"); + ast_delete(fval); + ast_delete(func); + return false; + } + + vec_push(func->blocks, body); + *out = fval; + + vec_push(parser->accessors, fval); + + return true; +} + +static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname) +{ + ast_expression *root = NULL; + ast_value *index = NULL; + ast_value *value = NULL; + ast_function *func; + ast_value *fval; + + if (!ast_istype(array->expression.next, ast_value)) { + parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type"); + return false; + } + + if (!parser_create_array_accessor(parser, array, funcname, &fval)) + return false; + func = fval->constval.vfunc; + fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "", TYPE_VOID); + + index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT); + value = ast_value_copy((ast_value*)array->expression.next); + + if (!index || !value) { + parseerror(parser, "failed to create locals for array accessor"); + goto cleanup; + } + (void)!ast_value_set_name(value, "value"); /* not important */ + vec_push(fval->expression.params, index); + vec_push(fval->expression.params, value); + + root = array_setter_node(parser, array, index, value, 0, array->expression.count); + if (!root) { + parseerror(parser, "failed to build accessor search tree"); + goto cleanup; + } + + vec_push(func->blocks[0]->exprs, root); + array->setter = fval; + return true; +cleanup: + if (index) ast_delete(index); + if (value) ast_delete(value); + if (root) ast_delete(root); + ast_delete(func); + ast_delete(fval); + return false; +} + +static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname) +{ + ast_expression *root = NULL; + ast_value *entity = NULL; + ast_value *index = NULL; + ast_value *value = NULL; + ast_function *func; + ast_value *fval; + + if (!ast_istype(array->expression.next, ast_value)) { + parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type"); + return false; + } + + if (!parser_create_array_accessor(parser, array, funcname, &fval)) + return false; + func = fval->constval.vfunc; + fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "", TYPE_VOID); + + entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY); + index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT); + value = ast_value_copy((ast_value*)array->expression.next); + if (!entity || !index || !value) { + parseerror(parser, "failed to create locals for array accessor"); + goto cleanup; + } + (void)!ast_value_set_name(value, "value"); /* not important */ + vec_push(fval->expression.params, entity); + vec_push(fval->expression.params, index); + vec_push(fval->expression.params, value); + + root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count); + if (!root) { + parseerror(parser, "failed to build accessor search tree"); + goto cleanup; + } + + vec_push(func->blocks[0]->exprs, root); + array->setter = fval; + return true; +cleanup: + if (entity) ast_delete(entity); + if (index) ast_delete(index); + if (value) ast_delete(value); + if (root) ast_delete(root); + ast_delete(func); + ast_delete(fval); + return false; +} + +static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname) +{ + ast_expression *root = NULL; + ast_value *index = NULL; + ast_value *fval; + ast_function *func; + + /* NOTE: checking array->expression.next rather than elemtype since + * for fields elemtype is a temporary fieldtype. + */ + if (!ast_istype(array->expression.next, ast_value)) { + parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type"); + return false; + } + + if (!parser_create_array_accessor(parser, array, funcname, &fval)) + return false; + func = fval->constval.vfunc; + fval->expression.next = ast_type_copy(ast_ctx(array), elemtype); + + index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT); + + if (!index) { + parseerror(parser, "failed to create locals for array accessor"); + goto cleanup; + } + vec_push(fval->expression.params, index); + + root = array_getter_node(parser, array, index, 0, array->expression.count); + if (!root) { + parseerror(parser, "failed to build accessor search tree"); + goto cleanup; + } - proto = (ast_value*)olddecl; + vec_push(func->blocks[0]->exprs, root); + array->getter = fval; + return true; +cleanup: + if (index) ast_delete(index); + if (root) ast_delete(root); + ast_delete(func); + ast_delete(fval); + return false; +} + +static ast_value *parse_typename(parser_t *parser, ast_value **storebase); +static ast_value *parse_parameter_list(parser_t *parser, ast_value *var) +{ + lex_ctx ctx; + size_t i; + ast_value **params; + ast_value *param; + ast_value *fval; + bool first = true; + bool variadic = false; + + ctx = parser_ctx(parser); + + /* for the sake of less code we parse-in in this function */ + if (!parser_next(parser)) { + parseerror(parser, "expected parameter list"); + return NULL; + } + + params = NULL; + + /* parse variables until we hit a closing paren */ + while (parser->tok != ')') { + if (!first) { + /* there must be commas between them */ + if (parser->tok != ',') { + parseerror(parser, "expected comma or end of parameter list"); + goto on_error; + } + if (!parser_next(parser)) { + parseerror(parser, "expected parameter"); + goto on_error; } + } + first = false; - /* turn var into a value of TYPE_FUNCTION, with the old var - * as return type - */ - fval = ast_value_new(ctx, var->name, TYPE_FUNCTION); - if (!fval) { - retval = false; - goto cleanup; + if (parser->tok == TOKEN_DOTS) { + /* '...' indicates a varargs function */ + variadic = true; + if (!parser_next(parser)) { + parseerror(parser, "expected parameter"); + return NULL; + } + if (parser->tok != ')') { + parseerror(parser, "`...` must be the last parameter of a variadic function declaration"); + goto on_error; } + } + else + { + /* for anything else just parse a typename */ + param = parse_typename(parser, NULL); + if (!param) + 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); + goto on_error; + } + } + } - fval->expression.next = (ast_expression*)var; - MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params); - fval->expression.variadic = var->expression.variadic; - var = NULL; - - /* we compare the type late here, but it's easier than - * messing with the parameter-vector etc. earlier - */ - if (proto) { - size_t param; - if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) { - parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i", - proto->name, - ast_ctx(proto).file, ast_ctx(proto).line); - ast_value_delete(fval); - retval = false; - goto cleanup; - } - /* copy over the parameter names */ - for (param = 0; param < fval->expression.params_count; ++param) - ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name); - /* copy the new context */ - ast_ctx(proto) = ast_ctx(fval); + /* sanity check */ + if (vec_size(params) > 8 && opts_standard == COMPILER_QCC) + (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard"); - /* now ditch the rest of the new data */ - ast_value_delete(fval); - fval = proto; - hadproto = true; - } + /* parse-out */ + if (!parser_next(parser)) { + parseerror(parser, "parse error after typename"); + goto on_error; + } + + /* now turn 'var' into a function type */ + fval = ast_value_new(ctx, "", TYPE_FUNCTION); + fval->expression.next = (ast_expression*)var; + fval->expression.variadic = variadic; + var = fval; - var = fval; + var->expression.params = params; + params = NULL; + + return var; + +on_error: + ast_delete(var); + for (i = 0; i < vec_size(params); ++i) + ast_delete(params[i]); + vec_free(params); + return NULL; +} + +static ast_value *parse_arraysize(parser_t *parser, ast_value *var) +{ + ast_expression *cexp; + ast_value *cval, *tmp; + lex_ctx ctx; + + ctx = parser_ctx(parser); + + if (!parser_next(parser)) { + ast_delete(var); + parseerror(parser, "expected array-size"); + return NULL; + } + + cexp = parse_expression_leave(parser, true); + + if (!cexp || !ast_istype(cexp, ast_value)) { + if (cexp) + ast_unref(cexp); + ast_delete(var); + parseerror(parser, "expected array-size as constant positive integer"); + return NULL; + } + cval = (ast_value*)cexp; + + tmp = ast_value_new(ctx, "", TYPE_ARRAY); + tmp->expression.next = (ast_expression*)var; + var = tmp; + + if (cval->expression.vtype == TYPE_INTEGER) + tmp->expression.count = cval->constval.vint; + else if (cval->expression.vtype == TYPE_FLOAT) + tmp->expression.count = cval->constval.vfloat; + else { + ast_unref(cexp); + ast_delete(var); + parseerror(parser, "array-size must be a positive integer constant"); + return NULL; + } + ast_unref(cexp); + + if (parser->tok != ']') { + ast_delete(var); + parseerror(parser, "expected ']' after array-size"); + return NULL; + } + if (!parser_next(parser)) { + ast_delete(var); + parseerror(parser, "error after parsing array size"); + return NULL; + } + return var; +} + +/* Parse a complete typename. + * for single-variables (ie. function parameters or typedefs) storebase should be NULL + * but when parsing variables separated by comma + * 'storebase' should point to where the base-type should be kept. + * The base type makes up every bit of type information which comes *before* the + * variable name. + * + * The following will be parsed in its entirety: + * void() foo() + * The 'basetype' in this case is 'void()' + * and if there's a comma after it, say: + * void() foo(), bar + * then the type-information 'void()' can be stored in 'storebase' + */ +static ast_value *parse_typename(parser_t *parser, ast_value **storebase) +{ + ast_value *var, *tmp; + lex_ctx ctx; + + const char *name = NULL; + bool isfield = false; + bool wasarray = false; + + ctx = parser_ctx(parser); + + /* types may start with a dot */ + if (parser->tok == '.') { + isfield = true; + /* if we parsed a dot we need a typename now */ + if (!parser_next(parser)) { + parseerror(parser, "expected typename for field definition"); + return NULL; + } + if (parser->tok != TOKEN_TYPENAME) { + parseerror(parser, "expected typename"); + return NULL; } + } + + /* generate the basic type value */ + var = ast_value_new(ctx, "", parser_token(parser)->constval.t); + /* do not yet turn into a field - remember: + * .void() foo; is a field too + * .void()() foo; is a function + */ + + /* parse on */ + if (!parser_next(parser)) { + ast_delete(var); + parseerror(parser, "parse error after typename"); + return NULL; + } + /* an opening paren now starts the parameter-list of a function + * this is where original-QC has parameter lists. + * We allow a single parameter list here. + * Much like fteqcc we don't allow `float()() x` + */ + if (parser->tok == '(') { + var = parse_parameter_list(parser, var); + if (!var) + return NULL; + } + + /* store the base if requested */ + if (storebase) { + *storebase = ast_value_copy(var); if (isfield) { - ast_value *tmp; - fld = ast_value_new(ctx, var->name, TYPE_FIELD); - fld->expression.next = (ast_expression*)var; - tmp = var; - var = fld; - fld = tmp; + tmp = ast_value_new(ctx, "", TYPE_FIELD); + tmp->expression.next = (ast_expression*)*storebase; + *storebase = tmp; } - else - fld = var; + } - if (!isfunc) { - if (!localblock) - { - olddecl = parser_find_global(parser, var->name); - if (olddecl) { - if (!isfield) { - parseerror(parser, "global `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - retval = false; - goto cleanup; - } - else if (opts_standard == COMPILER_QCC) { - parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc"); - parseerror(parser, "global `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - retval = false; - goto cleanup; - } + /* there may be a name now */ + if (parser->tok == TOKEN_IDENT) { + name = util_strdup(parser_tokval(parser)); + /* parse on */ + if (!parser_next(parser)) { + ast_delete(var); + parseerror(parser, "error after variable or field declaration"); + return NULL; + } + } + + /* now this may be an array */ + if (parser->tok == '[') { + wasarray = true; + var = parse_arraysize(parser, var); + if (!var) + return NULL; + } + + /* This is the point where we can turn it into a field */ + if (isfield) { + /* turn it into a field if desired */ + tmp = ast_value_new(ctx, "", TYPE_FIELD); + tmp->expression.next = (ast_expression*)var; + var = tmp; + } + + /* now there may be function parens again */ + 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"); + while (parser->tok == '(') { + var = parse_parameter_list(parser, var); + if (!var) { + if (name) + mem_d((void*)name); + ast_delete(var); + return NULL; + } + } + + /* finally name it */ + if (name) { + if (!ast_value_set_name(var, name)) { + ast_delete(var); + parseerror(parser, "internal error: failed to set name"); + return NULL; + } + /* free the name, ast_value_set_name duplicates */ + mem_d((void*)name); + } + + return var; +} + +static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields) +{ + ast_value *var; + ast_value *proto; + ast_expression *old; + bool was_end; + size_t i; + + ast_value *basetype = NULL; + bool retval = true; + bool isparam = false; + bool isvector = false; + bool cleanvar = true; + bool wasarray = false; + + varentry_t varent, ve[3]; + + /* get the first complete variable */ + var = parse_typename(parser, &basetype); + if (!var) { + if (basetype) + ast_delete(basetype); + return false; + } + + memset(&varent, 0, sizeof(varent)); + memset(&ve, 0, sizeof(ve)); + + while (true) { + proto = NULL; + wasarray = false; + + /* Part 0: finish the type */ + if (parser->tok == '(') { + 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) { + retval = false; + goto cleanup; + } + } + /* we only allow 1-dimensional arrays */ + if (parser->tok == '[') { + wasarray = true; + var = parse_arraysize(parser, var); + if (!var) { + retval = false; + goto cleanup; + } + } + if (parser->tok == '(' && wasarray) { + parseerror(parser, "arrays as part of a return type is not supported"); + /* we'll still parse the type completely for now */ + } + /* for functions returning functions */ + while (parser->tok == '(') { + 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) { + retval = false; + goto cleanup; + } + } + + /* Part 1: + * check for validity: (end_sys_..., multiple-definitions, prototypes, ...) + * Also: if there was a prototype, `var` will be deleted and set to `proto` which + * is then filled with the previous definition and the parameter-names replaced. + */ + if (!localblock) { + /* Deal with end_sys_ vars */ + was_end = false; + if (!strcmp(var->name, "end_sys_globals")) { + parser->crc_globals = vec_size(parser->globals); + was_end = true; + } + else if (!strcmp(var->name, "end_sys_fields")) { + parser->crc_fields = vec_size(parser->fields); + was_end = true; + } + if (was_end && var->expression.vtype == TYPE_FIELD) { + if (parsewarning(parser, WARN_END_SYS_FIELDS, + "global '%s' hint should not be a field", + parser_tokval(parser))) + { + retval = false; + goto cleanup; } - olddecl = parser_find_field(parser, var->name); - if (olddecl && opts_standard == COMPILER_QCC) { - if (!isfield) { - parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc"); - parseerror(parser, "field `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); + } + + if (!nofields && var->expression.vtype == TYPE_FIELD) + { + /* deal with field declarations */ + old = parser_find_field(parser, var->name); + if (old) { + if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, (int)ast_ctx(old).line)) + { retval = false; goto cleanup; } - else - { - if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line)) - { - retval = false; - goto cleanup; - } - if (!ast_compare_type(olddecl, (ast_expression*)var)) { - parseerror(parser, "field %s has previously been declared with a different type here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - retval = false; - goto cleanup; - } - ast_delete(var); - var = NULL; - goto nextvar; - } + ast_delete(var); + var = NULL; + goto skipvar; + /* + parseerror(parser, "field `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, ast_ctx(old).line); + retval = false; + goto cleanup; + */ } - else if (olddecl) { + 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"); parseerror(parser, "field `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); + var->name, ast_ctx(old).file, ast_ctx(old).line); retval = false; goto cleanup; } } - else /* if it's a local: */ + else { - olddecl = parser_find_local(parser, var->name, parser->blocklocal, &isparam); - if (opts_standard == COMPILER_GMQCC) + /* deal with other globals */ + old = parser_find_global(parser, var->name); + if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION) { - if (olddecl) - { - if (!isparam) { - parseerror(parser, "local `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - retval = false; - goto cleanup; - } + /* This is a function which had a prototype */ + if (!ast_istype(old, ast_value)) { + parseerror(parser, "internal error: prototype is not an ast_value"); + retval = false; + goto cleanup; } - - if( (!isparam && olddecl) || - (olddecl = parser_find_local(parser, var->name, 0, &isparam)) - ) - { - if (parsewarning(parser, WARN_LOCAL_SHADOWS, - "local `%s` is shadowing a parameter", var->name)) - { - parseerror(parser, "local `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - retval = false; - goto cleanup; - } + proto = (ast_value*)old; + if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) { + parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i", + proto->name, + ast_ctx(proto).file, ast_ctx(proto).line); + retval = false; + goto cleanup; } + /* we need the new parameter-names */ + for (i = 0; i < vec_size(proto->expression.params); ++i) + ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name); + ast_delete(var); + var = proto; } else { - if (olddecl) + /* other globals */ + if (old) { + parseerror(parser, "global `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, ast_ctx(old).line); + retval = false; + goto cleanup; + } + if (opts_standard == COMPILER_QCC && + (old = parser_find_field(parser, var->name))) { - if (isparam && - parsewarning(parser, WARN_LOCAL_SHADOWS, - "a parameter is shadowing local `%s`", var->name)) - { - ast_value_delete(var); - var = NULL; - retval = false; - goto cleanup; - } - else if (!isparam) - { - parseerror(parser, "local `%s` already declared here: %s:%i", - var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line); - ast_value_delete(var); - var = NULL; - retval = false; - goto cleanup; - } - ast_value_delete(var); - var = NULL; - goto nextvar; + parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc"); + parseerror(parser, "global `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, ast_ctx(old).line); + retval = false; + goto cleanup; } } } } - - - if (!hadproto) { - varent.name = util_strdup(var->name); - varent.var = (ast_expression*)var; - - if (!localblock) { - if (!isfield) { - if (!(retval = parser_t_globals_add(parser, varent))) - goto cleanup; - } - else { - if (!(retval = parser_t_fields_add(parser, varent))) - goto cleanup; - } - } else { - if (!(retval = parser_t_locals_add(parser, varent))) - goto cleanup; - if (!(retval = ast_block_locals_add(localblock, var))) { - parser->locals_count--; + else /* it's not a global */ + { + old = parser_find_local(parser, var->name, parser->blocklocal, &isparam); + if (old && !isparam) { + parseerror(parser, "local `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, (int)ast_ctx(old).line); + retval = false; + goto cleanup; + } + old = parser_find_local(parser, var->name, 0, &isparam); + if (old && isparam) { + if (parsewarning(parser, WARN_LOCAL_SHADOWS, + "local `%s` is shadowing a parameter", var->name)) + { + parseerror(parser, "local `%s` already declared here: %s:%i", + var->name, ast_ctx(old).file, (int)ast_ctx(old).line); + retval = false; goto cleanup; } + if (opts_standard != COMPILER_GMQCC) { + ast_delete(var); + var = NULL; + goto skipvar; + } } + } - if (fld->expression.vtype == TYPE_VECTOR) - { - size_t e; - if (!create_vector_members(parser, var, ve)) { + /* Part 2: + * Create the global/local, and deal with vector types. + */ + if (!proto) { + if (var->expression.vtype == TYPE_VECTOR) + isvector = true; + else if (var->expression.vtype == TYPE_FIELD && + var->expression.next->expression.vtype == TYPE_VECTOR) + isvector = true; + + if (isvector) { + if (!create_vector_members(var, ve)) { retval = false; goto cleanup; } + } - if (!localblock) { - for (e = 0; e < 3; ++e) { - if (!isfield) { - if (!(retval = parser_t_globals_add(parser, ve[e]))) - break; - } - else { - if (!(retval = parser_t_fields_add(parser, ve[e]))) - break; - } - } - if (!retval) { - parser->globals_count -= e+1; - goto cleanup; + varent.name = util_strdup(var->name); + varent.var = (ast_expression*)var; + + if (!localblock) { + /* deal with global variables, fields, functions */ + if (!nofields && var->expression.vtype == TYPE_FIELD) { + vec_push(parser->fields, varent); + if (isvector) { + for (i = 0; i < 3; ++i) + vec_push(parser->fields, ve[i]); } - } else { - for (e = 0; e < 3; ++e) { - if (!(retval = parser_t_locals_add(parser, ve[e]))) - break; - if (!(retval = ast_block_collect(localblock, ve[e].var))) - break; - ve[e].var = NULL; /* from here it's being collected in the block */ + } + else { + vec_push(parser->globals, varent); + if (isvector) { + for (i = 0; i < 3; ++i) + vec_push(parser->globals, ve[i]); } - if (!retval) { - parser->locals_count -= e+1; - localblock->locals_count--; - goto cleanup; + } + } else { + vec_push(parser->locals, varent); + vec_push(localblock->locals, var); + if (isvector) { + for (i = 0; i < 3; ++i) { + vec_push(parser->locals, ve[i]); + ast_block_collect(localblock, ve[i].var); + ve[i].var = NULL; /* from here it's being collected in the block */ } } - ve[0].name = ve[1].name = ve[2].name = NULL; - ve[0].var = ve[1].var = ve[2].var = NULL; } - cleanvar = false; + varent.name = NULL; + ve[0].name = ve[1].name = ve[2].name = NULL; + ve[0].var = ve[1].var = ve[2].var = NULL; + cleanvar = false; + } + /* Part 2.2 + * deal with arrays + */ + if (var->expression.vtype == TYPE_ARRAY) { + char name[1024]; + snprintf(name, sizeof(name), "%s##SET", var->name); + if (!parser_create_array_setter(parser, var, name)) + goto cleanup; + snprintf(name, sizeof(name), "%s##GET", var->name); + if (!parser_create_array_getter(parser, var, var->expression.next, name)) + goto cleanup; } + else if (!localblock && !nofields && + var->expression.vtype == TYPE_FIELD && + var->expression.next->expression.vtype == TYPE_ARRAY) + { + char name[1024]; + ast_expression *telem; + ast_value *tfield; + ast_value *array = (ast_value*)var->expression.next; -nextvar: - if (!(retval = parser_next(parser))) - goto cleanup; + if (!ast_istype(var->expression.next, ast_value)) { + parseerror(parser, "internal error: field element type must be an ast_value"); + goto cleanup; + } - if (parser->tok == ';') { - ast_value_delete(typevar); - return parser_next(parser); - } + snprintf(name, sizeof(name), "%s##SETF", var->name); + if (!parser_create_array_field_setter(parser, array, name)) + goto cleanup; - if (parser->tok == ',') { - /* another var */ - if (!(retval = parser_next(parser))) + telem = ast_type_copy(ast_ctx(var), array->expression.next); + tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD); + tfield->expression.next = telem; + snprintf(name, sizeof(name), "%s##GETFP", var->name); + if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) { + ast_delete(tfield); goto cleanup; - continue; + } + ast_delete(tfield); } - if (!localblock && isfield) { - parseerror(parser, "missing semicolon"); - ast_value_delete(typevar); - return false; +skipvar: + if (parser->tok == ';') { + ast_delete(basetype); + if (!parser_next(parser)) { + parseerror(parser, "error after variable declaration"); + return false; + } + return true; + } + + if (parser->tok == ',') + goto another; + + if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) { + parseerror(parser, "missing comma or semicolon while parsing variables"); + break; } - /* NOTE: only 'typevar' needs to be deleted from here on, so 'cleanup' won't be used - * to avoid having too many gotos - */ 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) ) { - ast_value_delete(typevar); - return false; + break; } } - if (parser->tok != '=') { - if (opts_standard == COMPILER_QCC) - parseerror(parser, "missing semicolon"); - else + if (parser->tok != '{') { + if (parser->tok != '=') { parseerror(parser, "missing semicolon or initializer"); - ast_value_delete(typevar); - return false; - } + break; + } - if (!parser_next(parser)) { - ast_value_delete(typevar); - return false; + if (!parser_next(parser)) { + parseerror(parser, "error parsing initializer"); + break; + } + } + else if (opts_standard == COMPILER_QCC) { + parseerror(parser, "expected '=' before function body in this standard"); } if (parser->tok == '#') { @@ -2690,107 +3467,134 @@ nextvar: if (localblock) { parseerror(parser, "cannot declare builtins within functions"); - ast_value_delete(typevar); - return false; + break; } - if (!isfunc) { + if (var->expression.vtype != TYPE_FUNCTION) { parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name); - ast_value_delete(typevar); - return false; + break; } if (!parser_next(parser)) { parseerror(parser, "expected builtin number"); - ast_value_delete(typevar); - return false; + break; } if (parser->tok != TOKEN_INTCONST) { parseerror(parser, "builtin number must be an integer constant"); - ast_value_delete(typevar); - return false; + break; } if (parser_token(parser)->constval.i <= 0) { - parseerror(parser, "builtin number must be positive integer greater than zero"); - ast_value_delete(typevar); - return false; + parseerror(parser, "builtin number must be an integer greater than zero"); + break; } func = ast_function_new(ast_ctx(var), var->name, var); if (!func) { parseerror(parser, "failed to allocate function for `%s`", var->name); - ast_value_delete(typevar); - return false; - } - if (!parser_t_functions_add(parser, func)) { - parseerror(parser, "failed to allocate slot for function `%s`", var->name); - ast_function_delete(func); - var->constval.vfunc = NULL; - ast_value_delete(typevar); - return false; + break; } + vec_push(parser->functions, func); func->builtin = -parser_token(parser)->constval.i; if (!parser_next(parser)) { - ast_value_delete(typevar); - return false; + parseerror(parser, "expected comma or semicolon"); + ast_function_delete(func); + var->constval.vfunc = NULL; + break; } } else if (parser->tok == '{' || parser->tok == '[') { - ast_value_delete(typevar); if (localblock) { parseerror(parser, "cannot declare functions within functions"); - return false; + break; } - if (!parse_function_body(parser, var)) { - return false; - } + if (!parse_function_body(parser, var)) + break; + ast_delete(basetype); return true; } else { ast_expression *cexp; ast_value *cval; cexp = parse_expression_leave(parser, true); - if (!cexp) { - ast_value_delete(typevar); - return false; - } + if (!cexp) + break; - cval = (ast_value*)cexp; - if (!ast_istype(cval, ast_value) || !cval->isconst) - parseerror(parser, "cannot initialize a global constant variable with a non-constant expression"); - else - { - var->isconst = true; - if (cval->expression.vtype == TYPE_STRING) - var->constval.vstring = parser_strdup(cval->constval.vstring); + if (!localblock) { + cval = (ast_value*)cexp; + if (!ast_istype(cval, ast_value) || !cval->isconst) + parseerror(parser, "cannot initialize a global constant variable with a non-constant expression"); else - memcpy(&var->constval, &cval->constval, sizeof(var->constval)); - ast_unref(cval); + { + var->isconst = true; + if (cval->expression.vtype == TYPE_STRING) + var->constval.vstring = parser_strdup(cval->constval.vstring); + else + memcpy(&var->constval, &cval->constval, sizeof(var->constval)); + ast_unref(cval); + } + } else { + shunt sy = { NULL, NULL }; + 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)) + ast_unref(cexp); + else { + if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0) + parseerror(parser, "internal error: leaked operands"); + vec_push(localblock->exprs, (ast_expression*)sy.out[0].out); + } + vec_free(sy.out); + vec_free(sy.ops); } } +another: if (parser->tok == ',') { - /* another */ + if (!parser_next(parser)) { + parseerror(parser, "expected another variable"); + break; + } + + if (parser->tok != TOKEN_IDENT) { + parseerror(parser, "expected another variable"); + break; + } + var = ast_value_copy(basetype); + cleanvar = true; + ast_value_set_name(var, parser_tokval(parser)); + if (!parser_next(parser)) { + parseerror(parser, "error parsing variable declaration"); + break; + } continue; } if (parser->tok != ';') { - parseerror(parser, "missing semicolon"); - ast_value_delete(typevar); - return false; + parseerror(parser, "missing semicolon after variables"); + break; } - (void)parser_next(parser); + if (!parser_next(parser)) { + parseerror(parser, "parse error after variable declaration"); + break; + } - ast_value_delete(typevar); + ast_delete(basetype); return true; } + if (cleanvar && var) + ast_delete(var); + ast_delete(basetype); + return false; + cleanup: - ast_delete(typevar); - if (var && cleanvar) ast_delete(var); + ast_delete(basetype); + if (cleanvar && var) + ast_delete(var); if (varent.name) mem_d(varent.name); if (ve[0].name) mem_d(ve[0].name); if (ve[1].name) mem_d(ve[1].name); @@ -2798,7 +3602,6 @@ cleanup: if (ve[0].var) mem_d(ve[0].var); if (ve[1].var) mem_d(ve[1].var); if (ve[2].var) mem_d(ve[2].var); - return retval; } @@ -2806,11 +3609,18 @@ static bool parser_global_statement(parser_t *parser) { if (parser->tok == TOKEN_TYPENAME || parser->tok == '.') { - return parse_variable(parser, NULL); + return parse_variable(parser, NULL, false); } else if (parser->tok == TOKEN_KEYWORD) { /* handle 'var' and 'const' */ + 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); + } return false; } else if (parser->tok == '$') @@ -2828,90 +3638,6 @@ static bool parser_global_statement(parser_t *parser) return true; } -static parser_t *parser; - -bool parser_init() -{ - parser = (parser_t*)mem_a(sizeof(parser_t)); - if (!parser) - return false; - - memset(parser, 0, sizeof(*parser)); - return true; -} - -bool parser_compile(const char *filename) -{ - parser->lex = lex_open(filename); - if (!parser->lex) { - printf("failed to open file \"%s\"\n", filename); - return false; - } - - /* initial lexer/parser state */ - parser->lex->flags.noops = true; - - if (parser_next(parser)) - { - while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR) - { - if (!parser_global_statement(parser)) { - if (parser->tok == TOKEN_EOF) - parseerror(parser, "unexpected eof"); - else if (!parser->errors) - parseerror(parser, "there have been errors, bailing out"); - lex_close(parser->lex); - parser->lex = NULL; - return false; - } - } - } else { - parseerror(parser, "parse error"); - lex_close(parser->lex); - parser->lex = NULL; - return false; - } - - lex_close(parser->lex); - parser->lex = NULL; - - return !parser->errors; -} - -void parser_cleanup() -{ - size_t i; - for (i = 0; i < parser->functions_count; ++i) { - ast_delete(parser->functions[i]); - } - for (i = 0; i < parser->imm_vector_count; ++i) { - ast_delete(parser->imm_vector[i]); - } - for (i = 0; i < parser->imm_string_count; ++i) { - ast_delete(parser->imm_string[i]); - } - for (i = 0; i < parser->imm_float_count; ++i) { - ast_delete(parser->imm_float[i]); - } - for (i = 0; i < parser->fields_count; ++i) { - ast_delete(parser->fields[i].var); - mem_d(parser->fields[i].name); - } - for (i = 0; i < parser->globals_count; ++i) { - ast_delete(parser->globals[i].var); - mem_d(parser->globals[i].name); - } - MEM_VECTOR_CLEAR(parser, functions); - MEM_VECTOR_CLEAR(parser, imm_vector); - MEM_VECTOR_CLEAR(parser, imm_string); - MEM_VECTOR_CLEAR(parser, imm_float); - MEM_VECTOR_CLEAR(parser, globals); - MEM_VECTOR_CLEAR(parser, fields); - MEM_VECTOR_CLEAR(parser, locals); - - mem_d(parser); -} - static uint16_t progdefs_crc_sum(uint16_t old, const char *str) { return util_crc16(old, str, strlen(str)); @@ -2920,6 +3646,7 @@ static uint16_t progdefs_crc_sum(uint16_t old, const char *str) static void progdefs_crc_file(const char *str) { /* write to progdefs.h here */ + (void)str; } static uint16_t progdefs_crc_both(uint16_t old, const char *str) @@ -2984,6 +3711,133 @@ static void generate_checksum(parser_t *parser) code_crc = crc; } +static parser_t *parser; + +bool parser_init() +{ + size_t i; + parser = (parser_t*)mem_a(sizeof(parser_t)); + if (!parser) + return false; + + memset(parser, 0, sizeof(*parser)); + + for (i = 0; i < operator_count; ++i) { + if (operators[i].id == opid1('=')) { + parser->assign_op = operators+i; + break; + } + } + if (!parser->assign_op) { + printf("internal error: initializing parser: failed to find assign operator\n"); + mem_d(parser); + return false; + } + return true; +} + +bool parser_compile() +{ + /* initial lexer/parser state */ + parser->lex->flags.noops = true; + + if (parser_next(parser)) + { + while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR) + { + if (!parser_global_statement(parser)) { + if (parser->tok == TOKEN_EOF) + parseerror(parser, "unexpected eof"); + else if (!parser->errors) + parseerror(parser, "there have been errors, bailing out"); + lex_close(parser->lex); + parser->lex = NULL; + return false; + } + } + } else { + parseerror(parser, "parse error"); + lex_close(parser->lex); + parser->lex = NULL; + return false; + } + + lex_close(parser->lex); + parser->lex = NULL; + + return !parser->errors; +} + +bool parser_compile_file(const char *filename) +{ + parser->lex = lex_open(filename); + if (!parser->lex) { + con_err("failed to open file \"%s\"\n", filename); + return false; + } + return parser_compile(); +} + +bool parser_compile_string_len(const char *name, const char *str, size_t len) +{ + parser->lex = lex_open_string(str, len, name); + if (!parser->lex) { + con_err("failed to create lexer for string \"%s\"\n", name); + return false; + } + 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; + for (i = 0; i < vec_size(parser->accessors); ++i) { + ast_delete(parser->accessors[i]->constval.vfunc); + parser->accessors[i]->constval.vfunc = NULL; + ast_delete(parser->accessors[i]); + } + for (i = 0; i < vec_size(parser->functions); ++i) { + ast_delete(parser->functions[i]); + } + for (i = 0; i < vec_size(parser->imm_vector); ++i) { + ast_delete(parser->imm_vector[i]); + } + for (i = 0; i < vec_size(parser->imm_string); ++i) { + ast_delete(parser->imm_string[i]); + } + for (i = 0; i < vec_size(parser->imm_float); ++i) { + ast_delete(parser->imm_float[i]); + } + for (i = 0; i < vec_size(parser->fields); ++i) { + ast_delete(parser->fields[i].var); + mem_d(parser->fields[i].name); + } + for (i = 0; i < vec_size(parser->globals); ++i) { + ast_delete(parser->globals[i].var); + mem_d(parser->globals[i].name); + } + vec_free(parser->accessors); + vec_free(parser->functions); + vec_free(parser->imm_vector); + vec_free(parser->imm_string); + vec_free(parser->imm_float); + vec_free(parser->globals); + vec_free(parser->fields); + vec_free(parser->locals); + + mem_d(parser); +} + bool parser_finish(const char *output) { size_t i; @@ -2994,11 +3848,11 @@ bool parser_finish(const char *output) { ir = ir_builder_new("gmqcc_out"); if (!ir) { - printf("failed to allocate builder\n"); + con_out("failed to allocate builder\n"); return false; } - for (i = 0; i < parser->fields_count; ++i) { + for (i = 0; i < vec_size(parser->fields); ++i) { ast_value *field; bool isconst; if (!ast_istype(parser->fields[i].var, ast_value)) @@ -3006,8 +3860,8 @@ bool parser_finish(const char *output) field = (ast_value*)parser->fields[i].var; isconst = field->isconst; field->isconst = false; - if (!ast_global_codegen((ast_value*)field, ir)) { - printf("failed to generate field %s\n", field->name); + 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; } @@ -3024,7 +3878,7 @@ bool parser_finish(const char *output) (void)!ir_value_set_field(field->ir_v, ifld); } } - for (i = 0; i < parser->globals_count; ++i) { + for (i = 0; i < vec_size(parser->globals); ++i) { ast_value *asvalue; if (!ast_istype(parser->globals[i].var, ast_value)) continue; @@ -3037,54 +3891,113 @@ bool parser_finish(const char *output) "unused global: `%s`", asvalue->name); } } - if (!ast_global_codegen(asvalue, ir)) { - printf("failed to generate global %s\n", parser->globals[i].name); + if (!ast_global_codegen(asvalue, ir, false)) { + con_out("failed to generate global %s\n", parser->globals[i].name); ir_builder_delete(ir); return false; } } - for (i = 0; i < parser->imm_float_count; ++i) { - if (!ast_global_codegen(parser->imm_float[i], ir)) { - printf("failed to generate global %s\n", parser->imm_float[i]->name); + 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 < parser->imm_string_count; ++i) { - if (!ast_global_codegen(parser->imm_string[i], ir)) { - printf("failed to generate global %s\n", parser->imm_string[i]->name); + 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 < parser->imm_vector_count; ++i) { - if (!ast_global_codegen(parser->imm_vector[i], ir)) { - printf("failed to generate global %s\n", parser->imm_vector[i]->name); + 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 < parser->functions_count; ++i) { + for (i = 0; i < vec_size(parser->globals); ++i) { + ast_value *asvalue; + if (!ast_istype(parser->globals[i].var, ast_value)) + continue; + asvalue = (ast_value*)(parser->globals[i].var); + 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", parser->globals[i].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", parser->globals[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].var->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", parser->fields[i].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", parser->fields[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)) { - printf("failed to generate function %s\n", parser->functions[i]->name); + 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)) { - printf("failed to finalize function %s\n", parser->functions[i]->name); + con_out("failed to finalize function %s\n", parser->functions[i]->name); ir_builder_delete(ir); return false; } } if (retval) { - if (opts_dump) - ir_builder_dump(ir, printf); + if (opts_dumpfin) + ir_builder_dump(ir, con_out); generate_checksum(parser); if (!ir_builder_generate(ir, output)) { - printf("*** failed to generate output file\n"); + con_out("*** failed to generate output file\n"); ir_builder_delete(ir); return false; } @@ -3094,6 +4007,6 @@ bool parser_finish(const char *output) return retval; } - printf("*** there were compile errors\n"); + con_out("*** there were compile errors\n"); return false; }