From c24a8e688a6312764254beac2b2520bb0c5e998d Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 19:28:42 -0800 Subject: auto import from //depot/cupcake/@135843 --- amend/execute.c | 315 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 315 insertions(+) create mode 100644 amend/execute.c (limited to 'amend/execute.c') diff --git a/amend/execute.c b/amend/execute.c new file mode 100644 index 000000000..9162ad647 --- /dev/null +++ b/amend/execute.c @@ -0,0 +1,315 @@ +/* + * Copyright (C) 2007 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 +#include +#include +#undef NDEBUG +#include +#include "ast.h" +#include "execute.h" + +typedef struct { + int c; + const char **v; +} StringList; + +static int execBooleanValue(ExecContext *ctx, + const AmBooleanValue *booleanValue, bool *result); +static int execStringValue(ExecContext *ctx, const AmStringValue *stringValue, + const char **result); + +static int +execBooleanExpression(ExecContext *ctx, + const AmBooleanExpression *booleanExpression, bool *result) +{ + int ret; + bool arg1, arg2; + bool unary; + + assert(ctx != NULL); + assert(booleanExpression != NULL); + assert(result != NULL); + if (ctx == NULL || booleanExpression == NULL || result == NULL) { + return -__LINE__; + } + + if (booleanExpression->op == AM_BOP_NOT) { + unary = true; + } else { + unary = false; + } + + ret = execBooleanValue(ctx, booleanExpression->arg1, &arg1); + if (ret != 0) return ret; + + if (!unary) { + ret = execBooleanValue(ctx, booleanExpression->arg2, &arg2); + if (ret != 0) return ret; + } else { + arg2 = false; + } + + switch (booleanExpression->op) { + case AM_BOP_NOT: + *result = !arg1; + break; + case AM_BOP_EQ: + *result = (arg1 == arg2); + break; + case AM_BOP_NE: + *result = (arg1 != arg2); + break; + case AM_BOP_AND: + *result = (arg1 && arg2); + break; + case AM_BOP_OR: + *result = (arg1 || arg2); + break; + default: + return -__LINE__; + } + + return 0; +} + +static int +execFunctionArguments(ExecContext *ctx, + const AmFunctionArguments *functionArguments, StringList *result) +{ + int ret; + + assert(ctx != NULL); + assert(functionArguments != NULL); + assert(result != NULL); + if (ctx == NULL || functionArguments == NULL || result == NULL) { + return -__LINE__; + } + + result->c = functionArguments->argc; + result->v = (const char **)malloc(result->c * sizeof(const char *)); + if (result->v == NULL) { + result->c = 0; + return -__LINE__; + } + + int i; + for (i = 0; i < functionArguments->argc; i++) { + ret = execStringValue(ctx, &functionArguments->argv[i], &result->v[i]); + if (ret != 0) { + result->c = 0; + free(result->v); + //TODO: free the individual args, if we're responsible for them. + result->v = NULL; + return ret; + } + } + + return 0; +} + +static int +execFunctionCall(ExecContext *ctx, const AmFunctionCall *functionCall, + const char **result) +{ + int ret; + + assert(ctx != NULL); + assert(functionCall != NULL); + assert(result != NULL); + if (ctx == NULL || functionCall == NULL || result == NULL) { + return -__LINE__; + } + + StringList args; + ret = execFunctionArguments(ctx, functionCall->args, &args); + if (ret != 0) { + return ret; + } + + ret = callFunction(functionCall->fn, args.c, args.v, (char **)result, NULL); + if (ret != 0) { + return ret; + } + + //TODO: clean up args + + return 0; +} + +static int +execStringValue(ExecContext *ctx, const AmStringValue *stringValue, + const char **result) +{ + int ret; + + assert(ctx != NULL); + assert(stringValue != NULL); + assert(result != NULL); + if (ctx == NULL || stringValue == NULL || result == NULL) { + return -__LINE__; + } + + switch (stringValue->type) { + case AM_SVAL_LITERAL: + *result = strdup(stringValue->u.literal); + break; + case AM_SVAL_FUNCTION: + ret = execFunctionCall(ctx, stringValue->u.function, result); + if (ret != 0) { + return ret; + } + break; + default: + return -__LINE__; + } + + return 0; +} + +static int +execStringComparisonExpression(ExecContext *ctx, + const AmStringComparisonExpression *stringComparisonExpression, + bool *result) +{ + int ret; + + assert(ctx != NULL); + assert(stringComparisonExpression != NULL); + assert(result != NULL); + if (ctx == NULL || stringComparisonExpression == NULL || result == NULL) { + return -__LINE__; + } + + const char *arg1, *arg2; + ret = execStringValue(ctx, stringComparisonExpression->arg1, &arg1); + if (ret != 0) { + return ret; + } + ret = execStringValue(ctx, stringComparisonExpression->arg2, &arg2); + if (ret != 0) { + return ret; + } + + int cmp = strcmp(arg1, arg2); + + switch (stringComparisonExpression->op) { + case AM_SOP_LT: + *result = (cmp < 0); + break; + case AM_SOP_LE: + *result = (cmp <= 0); + break; + case AM_SOP_GT: + *result = (cmp > 0); + break; + case AM_SOP_GE: + *result = (cmp >= 0); + break; + case AM_SOP_EQ: + *result = (cmp == 0); + break; + case AM_SOP_NE: + *result = (cmp != 0); + break; + default: + return -__LINE__; + break; + } + + return 0; +} + +static int +execBooleanValue(ExecContext *ctx, const AmBooleanValue *booleanValue, + bool *result) +{ + int ret; + + assert(ctx != NULL); + assert(booleanValue != NULL); + assert(result != NULL); + if (ctx == NULL || booleanValue == NULL || result == NULL) { + return -__LINE__; + } + + switch (booleanValue->type) { + case AM_BVAL_EXPRESSION: + ret = execBooleanExpression(ctx, &booleanValue->u.expression, result); + break; + case AM_BVAL_STRING_COMPARISON: + ret = execStringComparisonExpression(ctx, + &booleanValue->u.stringComparison, result); + break; + default: + ret = -__LINE__; + break; + } + + return ret; +} + +static int +execCommand(ExecContext *ctx, const AmCommand *command) +{ + int ret; + + assert(ctx != NULL); + assert(command != NULL); + if (ctx == NULL || command == NULL) { + return -__LINE__; + } + + CommandArgumentType argType; + argType = getCommandArgumentType(command->cmd); + switch (argType) { + case CMD_ARGS_BOOLEAN: + { + bool bVal; + ret = execBooleanValue(ctx, command->args->u.b, &bVal); + if (ret == 0) { + ret = callBooleanCommand(command->cmd, bVal); + } + } + break; + case CMD_ARGS_WORDS: + { + AmWordList *words = command->args->u.w; + ret = callCommand(command->cmd, words->argc, words->argv); + } + break; + default: + ret = -__LINE__; + break; + } + + return ret; +} + +int +execCommandList(ExecContext *ctx, const AmCommandList *commandList) +{ + int i; + for (i = 0; i < commandList->commandCount; i++) { + int ret = execCommand(ctx, commandList->commands[i]); + if (ret != 0) { + int line = commandList->commands[i]->line; + return line > 0 ? line : ret; + } + } + + return 0; +} -- cgit v1.2.3