--- /dev/null
+/*
+* Copyright (C) 2011 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#include "EntryPoint.h"
+
+#include "Parser.h"
+#include "TypeFactory.h"
+#include "strUtils.h"
+
+#include <sstream>
+#include <string>
+
+#include <stdio.h>
+
+EntryPoint::EntryPoint()
+{
+ reset();
+}
+
+EntryPoint::~EntryPoint()
+{
+}
+
+void EntryPoint::reset()
+{
+ m_unsupported = false;
+ m_customDecoder = false;
+ m_notApi = false;
+ m_flushOnEncode = false;
+ m_vars.empty();
+}
+
+// return true for valid line (need to get into the entry points list)
+bool EntryPoint::parse(unsigned int lc, const std::string & str)
+{
+ size_t pos, last;
+ std::string field;
+
+ reset();
+ std::string linestr = trim(str);
+
+ if (linestr.size() == 0) return false;
+ if (linestr.at(0) == '#') return false;
+
+ // skip PREFIX
+ field = getNextToken(linestr, 0, &last, "(");
+ pos = last + 1;
+ // return type
+ field = getNextToken(linestr, pos, &last, ",)");
+
+ std::string error;
+ std::string retTypeName;
+ if (!parseTypeDeclaration(field, &retTypeName, &error)) {
+ fprintf(stderr,
+ "line: %d: Parsing error in field <%s>: %s\n",
+ lc,
+ field.c_str(),
+ error.c_str());
+ return false;
+ }
+ pos = last + 1;
+ const VarType *theType = TypeFactory::instance()->getVarTypeByName(retTypeName);
+ if (theType->name() == "UNKNOWN") {
+ fprintf(stderr, "UNKNOWN retval: %s\n", linestr.c_str());
+ }
+
+ m_retval.init(std::string(""),
+ theType,
+ std::string(""),
+ Var::POINTER_OUT,
+ std::string(""),
+ std::string(""));
+
+ // function name
+ m_name = getNextToken(linestr, pos, &last, ",)");
+ pos = last + 1;
+
+ // parameters;
+ int nvars = 0;
+ while (pos < linestr.size() - 1) {
+ field = getNextToken(linestr, pos, &last, ",)");
+ if (field == "void") {
+ // 'void' is used as a special case for functions that don't take
+ // parameters at all.
+ break;
+ }
+ std::string vartype, varname;
+ if (!parseParameterDeclaration(field, &vartype, &varname, &error)) {
+ fprintf(stderr,
+ "line: %d: Parsing error in field <%s>, error: %s\n",
+ lc,
+ field.c_str(),
+ error.c_str());
+ return false;
+ }
+ nvars++;
+ const VarType *v = TypeFactory::instance()->getVarTypeByName(vartype);
+ if (v->id() == 0) {
+ fprintf(stderr, "%d: Unknown type: %s\n", lc, vartype.c_str());
+ } else {
+ if (varname == "" &&
+ !(v->name() == "void" && !v->isPointer())) {
+ std::ostringstream oss;
+ oss << "var" << nvars;
+ varname = oss.str();
+ }
+
+ m_vars.push_back(Var(varname, v, std::string(""), Var::POINTER_IN, "", ""));
+ }
+ pos = last + 1;
+ }
+ return true;
+}
+
+void EntryPoint::print(FILE *fp, bool newline,
+ const std::string & name_suffix,
+ const std::string & name_prefix,
+ const std::string & ctx_param ) const
+{
+ fprintf(fp, "%s %s%s%s(",
+ m_retval.type()->name().c_str(),
+ name_prefix.c_str(),
+ m_name.c_str(),
+ name_suffix.c_str());
+
+ if (ctx_param != "") fprintf(fp, "%s ", ctx_param.c_str());
+
+ for (size_t i = 0; i < m_vars.size(); i++) {
+ if (m_vars[i].isVoid()) continue;
+ if (i != 0 || ctx_param != "") fprintf(fp, ", ");
+ fprintf(fp, "%s %s", m_vars[i].type()->name().c_str(),
+ m_vars[i].name().c_str());
+ }
+ fprintf(fp, ")%s", newline? "\n" : "");
+}
+
+Var * EntryPoint::var(const std::string & name)
+{
+ Var *v = NULL;
+ for (size_t i = 0; i < m_vars.size(); i++) {
+ if (m_vars[i].name() == name) {
+ v = &m_vars[i];
+ break;
+ }
+ }
+ return v;
+}
+
+bool EntryPoint::hasPointers()
+{
+ bool pointers = false;
+ if (m_retval.isPointer()) pointers = true;
+ if (!pointers) {
+ for (size_t i = 0; i < m_vars.size(); i++) {
+ if (m_vars[i].isPointer()) {
+ pointers = true;
+ break;
+ }
+ }
+ }
+ return pointers;
+}
+
+int EntryPoint::setAttribute(const std::string &line, size_t lc)
+{
+ size_t pos = 0;
+ size_t last;
+ std::string token = getNextToken(line, 0, &last, WHITESPACE);
+
+ if (token == "len") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'len' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+ // set the size expression into var
+ pos = last;
+ v->setLenExpression(line.substr(pos));
+ } else if (token == "param_check") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'param_check' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+ // set the size expression into var
+ pos = last;
+ v->setParamCheckExpression(line.substr(pos));
+
+ } else if (token == "dir") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'dir' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+
+ pos = last;
+ std::string pointerDirStr = getNextToken(line, pos, &last, WHITESPACE);
+ if (pointerDirStr.size() == 0) {
+ fprintf(stderr, "ERROR: %u: missing pointer directions\n", (unsigned int)lc);
+ return -3;
+ }
+
+ if (pointerDirStr == "out") {
+ v->setPointerDir(Var::POINTER_OUT);
+ } else if (pointerDirStr == "inout") {
+ v->setPointerDir(Var::POINTER_INOUT);
+ } else if (pointerDirStr == "in") {
+ v->setPointerDir(Var::POINTER_IN);
+ } else {
+ fprintf(stderr, "ERROR: %u: unknow pointer direction %s\n", (unsigned int)lc, pointerDirStr.c_str());
+ }
+ } else if (token == "var_flag") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'var_flag' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+ int count = 0;
+ for (;;) {
+ pos = last;
+ std::string flag = getNextToken(line, pos, &last, WHITESPACE);
+ if (flag.size() == 0) {
+ if (count == 0) {
+ fprintf(stderr, "ERROR: %u: missing flag\n", (unsigned int) lc);
+ return -3;
+ }
+ break;
+ }
+ count++;
+
+ if (flag == "nullAllowed") {
+ if (v->isPointer()) {
+ v->setNullAllowed(true);
+ } else {
+ fprintf(stderr, "WARNING: %u: setting nullAllowed for non-pointer variable %s\n",
+ (unsigned int) lc, v->name().c_str());
+ }
+ } else if (flag == "isLarge") {
+ if (v->isPointer()) {
+ v->setIsLarge(true);
+ } else {
+ fprintf(stderr, "WARNING: %u: setting isLarge flag for a non-pointer variable %s\n",
+ (unsigned int) lc, v->name().c_str());
+ }
+ } else {
+ fprintf(stderr, "WARNING: %u: unknow flag %s\n", (unsigned int)lc, flag.c_str());
+ }
+ }
+ } else if (token == "custom_pack") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'custom_pack' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+ // set the size expression into var
+ pos = last;
+ v->setPackExpression(line.substr(pos));
+ } else if (token == "custom_write") {
+ pos = last;
+ std::string varname = getNextToken(line, pos, &last, WHITESPACE);
+
+ if (varname.size() == 0) {
+ fprintf(stderr, "ERROR: %u: Missing variable name in 'custom_write' attribute\n", (unsigned int)lc);
+ return -1;
+ }
+ Var * v = var(varname);
+ if (v == NULL) {
+ fprintf(stderr, "ERROR: %u: variable %s is not a parameter of %s\n",
+ (unsigned int)lc, varname.c_str(), name().c_str());
+ return -2;
+ }
+ // set the size expression into var
+ pos = last;
+ v->setWriteExpression(line.substr(pos));
+ } else if (token == "flag") {
+ pos = last;
+ std::string flag = getNextToken(line, pos, &last, WHITESPACE);
+ if (flag.size() == 0) {
+ fprintf(stderr, "ERROR: %u: missing flag\n", (unsigned int) lc);
+ return -4;
+ }
+
+ if (flag == "unsupported") {
+ setUnsupported(true);
+ } else if (flag == "custom_decoder") {
+ setCustomDecoder(true);
+ } else if (flag == "not_api") {
+ setNotApi(true);
+ } else if (flag == "flushOnEncode") {
+ setFlushOnEncode(true);
+ } else {
+ fprintf(stderr, "WARNING: %u: unknown flag %s\n", (unsigned int)lc, flag.c_str());
+ }
+ } else {
+ fprintf(stderr, "WARNING: %u: unknown attribute %s\n", (unsigned int)lc, token.c_str());
+ }
+
+ return 0;
+}
Code Review / iec.git / blobdiff