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Generators.cpp
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#include "Generators.hpp"
#include <string.h>
#include <algorithm>
#include "Converters.hpp"
#include "Evaluator.hpp"
#include "FileUtilities.hpp"
#include "GeneratorHelpers.hpp"
#include "GeneratorHelpersEnums.hpp"
#include "Logging.hpp"
#include "ModuleManager.hpp"
#include "Tokenizer.hpp"
#include "Utilities.hpp"
// (export
const int EXPORT_SCOPE_START_EVAL_OFFSET = 2;
typedef bool (*ProcessCommandOptionFunc)(EvaluatorEnvironment& environment,
const std::vector<Token>& tokens, int startTokenIndex,
ProcessCommand* command);
bool SetProcessCommandFileToExec(EvaluatorEnvironment& environment,
const std::vector<Token>& tokens, int startTokenIndex,
ProcessCommand* command)
{
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int argumentIndex = getExpectedArgument("expected path to compiler", tokens, startTokenIndex, 2,
endInvocationIndex);
if (argumentIndex == -1)
return false;
const Token& argumentToken = tokens[argumentIndex];
if (!ExpectTokenType("file to execute", argumentToken, TokenType_String))
return false;
command->fileToExecute = argumentToken.contents;
return true;
}
bool SetProcessCommandArguments(EvaluatorEnvironment& environment, const std::vector<Token>& tokens,
int startTokenIndex, ProcessCommand* command)
{
command->arguments.clear();
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int startArgsIndex = getArgument(tokens, startTokenIndex, 2, endInvocationIndex);
// No args is weird, but we'll allow it
if (startArgsIndex == -1)
return true;
for (int argumentIndex = startArgsIndex; argumentIndex < endInvocationIndex; ++argumentIndex)
{
const Token& argumentToken = tokens[argumentIndex];
if (argumentToken.type == TokenType_String)
{
command->arguments.push_back(
{ProcessCommandArgumentType_String, argumentToken.contents});
}
else if (argumentToken.type == TokenType_Symbol)
{
struct
{
const char* symbolName;
ProcessCommandArgumentType type;
} symbolsToCommandTypes[] = {
{"'source-input", ProcessCommandArgumentType_SourceInput},
{"'object-output", ProcessCommandArgumentType_ObjectOutput},
{"'debug-symbols-output", ProcessCommandArgumentType_DebugSymbolsOutput},
{"'import-library-paths", ProcessCommandArgumentType_ImportLibraryPaths},
{"'import-libraries", ProcessCommandArgumentType_ImportLibraries},
{"'cakelisp-headers-include", ProcessCommandArgumentType_CakelispHeadersInclude},
{"'include-search-dirs", ProcessCommandArgumentType_IncludeSearchDirs},
{"'additional-options", ProcessCommandArgumentType_AdditionalOptions},
{"'precompiled-header-output", ProcessCommandArgumentType_PrecompiledHeaderOutput},
{"'precompiled-header-include",
ProcessCommandArgumentType_PrecompiledHeaderInclude},
{"'object-input", ProcessCommandArgumentType_ObjectInput},
{"'library-output", ProcessCommandArgumentType_DynamicLibraryOutput},
{"'executable-output", ProcessCommandArgumentType_ExecutableOutput},
{"'library-search-dirs", ProcessCommandArgumentType_LibrarySearchDirs},
{"'libraries", ProcessCommandArgumentType_Libraries},
{"'library-runtime-search-dirs",
ProcessCommandArgumentType_LibraryRuntimeSearchDirs},
{"'linker-arguments", ProcessCommandArgumentType_LinkerArguments},
};
bool found = false;
for (unsigned int i = 0; i < ArraySize(symbolsToCommandTypes); ++i)
{
if (argumentToken.contents.compare(symbolsToCommandTypes[i].symbolName) == 0)
{
command->arguments.push_back({symbolsToCommandTypes[i].type, EmptyString});
found = true;
break;
}
}
if (!found)
{
ErrorAtToken(argumentToken,
"unrecognized argument symbol. Recognized options (some may not be "
"suitable for this command):");
for (unsigned int i = 0; i < ArraySize(symbolsToCommandTypes); ++i)
{
Logf("\t%s\n", symbolsToCommandTypes[i].symbolName);
}
return false;
}
}
else
{
ErrorAtTokenf(argumentToken, "expected string argument or symbol, got %s",
tokenTypeToString(argumentToken.type));
return false;
}
}
return true;
}
bool SetCakelispOption(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("set-cakelisp-option", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int optionNameIndex =
getExpectedArgument("expected option name", tokens, startTokenIndex, 1, endInvocationIndex);
if (optionNameIndex == -1)
return false;
struct
{
const char* option;
std::string* output;
} stringOptions[] = {
{"cakelisp-src-dir", &environment.cakelispSrcDir},
{"cakelisp-lib-dir", &environment.cakelispLibDir},
{"executable-output", &environment.executableOutput},
};
for (unsigned int i = 0; i < ArraySize(stringOptions); ++i)
{
if (tokens[optionNameIndex].contents.compare(stringOptions[i].option) == 0)
{
int pathIndex = getExpectedArgument("expected value", tokens, startTokenIndex, 2,
endInvocationIndex);
if (pathIndex == -1)
return false;
const Token& pathToken = tokens[pathIndex];
// This is a bit unfortunate. Because I don't have an interpreter, this must be a type
// we can recognize, and cannot be constructed procedurally
if (!ExpectTokenType(stringOptions[i].option, pathToken, TokenType_String))
return false;
if (!stringOptions[i].output->empty())
{
if (logging.optionAdding)
NoteAtTokenf(
pathToken,
"ignoring %s - only the first encountered set will have an effect. "
"Currently set to '%s'",
stringOptions[i].option, stringOptions[i].output->c_str());
return true;
}
*stringOptions[i].output = pathToken.contents;
return true;
}
}
// This needs to be defined early, else things will only be partially supported
if (tokens[optionNameIndex].contents.compare("use-c-linkage") == 0)
{
int enableStateIndex =
getExpectedArgument("expected true or false", tokens, startTokenIndex, 2, endInvocationIndex);
if (enableStateIndex == -1)
return false;
const Token& enableStateToken = tokens[enableStateIndex];
if (!ExpectTokenType("use-c-linkage", enableStateToken, TokenType_Symbol))
return false;
if (enableStateToken.contents.compare("true") == 0)
environment.useCLinkage = true;
else if (enableStateToken.contents.compare("false") == 0)
environment.useCLinkage = false;
else
{
ErrorAtToken(enableStateToken, "expected true or false");
return false;
}
return true;
}
struct ProcessCommandOptions
{
const char* optionName;
ProcessCommand* command;
ProcessCommandOptionFunc handler;
};
ProcessCommandOptions commandOptions[] = {
{"compile-time-compiler", &environment.compileTimeBuildCommand,
SetProcessCommandFileToExec},
{"compile-time-compile-arguments", &environment.compileTimeBuildCommand,
SetProcessCommandArguments},
{"compile-time-linker", &environment.compileTimeLinkCommand, SetProcessCommandFileToExec},
{"compile-time-link-arguments", &environment.compileTimeLinkCommand,
SetProcessCommandArguments},
{"compile-time-header-precompiler", &environment.compileTimeHeaderPrecompilerCommand,
SetProcessCommandFileToExec},
{"compile-time-header-precompiler-arguments",
&environment.compileTimeHeaderPrecompilerCommand, SetProcessCommandArguments},
{"build-time-compiler", &environment.buildTimeBuildCommand, SetProcessCommandFileToExec},
{"build-time-compile-arguments", &environment.buildTimeBuildCommand,
SetProcessCommandArguments},
{"build-time-linker", &environment.buildTimeLinkCommand, SetProcessCommandFileToExec},
{"build-time-link-arguments", &environment.buildTimeLinkCommand,
SetProcessCommandArguments},
};
for (unsigned int i = 0; i < ArraySize(commandOptions); ++i)
{
if (tokens[optionNameIndex].contents.compare(commandOptions[i].optionName) == 0)
{
return commandOptions[i].handler(environment, tokens, startTokenIndex,
commandOptions[i].command);
}
}
ErrorAtToken(tokens[optionNameIndex], "unrecognized option. Available options:");
for (unsigned int i = 0; i < ArraySize(stringOptions); ++i)
Logf("\t%s\n", stringOptions[i].option);
for (unsigned int i = 0; i < ArraySize(commandOptions); ++i)
Logf("\t%s\n", commandOptions[i].optionName);
return false;
}
bool SetModuleOption(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex, GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("set-module-option", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
if (!context.module)
{
ErrorAtToken(tokens[startTokenIndex], "modules not supported (internal code error?)");
return false;
}
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int optionNameIndex =
getExpectedArgument("expected option name", tokens, startTokenIndex, 1, endInvocationIndex);
if (optionNameIndex == -1)
return false;
// TODO: Copy-pasted
struct ProcessCommandOptions
{
const char* optionName;
ProcessCommand* command;
ProcessCommandOptionFunc handler;
};
ProcessCommandOptions commandOptions[] = {
// TODO: Use module overrides
// {"compile-time-compiler", &context.module->compileTimeBuildCommand,
// SetProcessCommandFileToExec},
// {"compile-time-compile-arguments", &context.module->compileTimeBuildCommand,
// SetProcessCommandArguments},
// {"compile-time-linker", &context.module->compileTimeLinkCommand,
// SetProcessCommandFileToExec},
// {"compile-time-link-arguments", &context.module->compileTimeLinkCommand,
// SetProcessCommandArguments},
{"build-time-compiler", &context.module->buildTimeBuildCommand,
SetProcessCommandFileToExec},
{"build-time-compile-arguments", &context.module->buildTimeBuildCommand,
SetProcessCommandArguments},
// Doesn't really make sense
// {"build-time-linker", &context.module->buildTimeLinkCommand,
// SetProcessCommandFileToExec},
// {"build-time-link-arguments", &context.module->buildTimeLinkCommand,
// SetProcessCommandArguments},
};
for (unsigned int i = 0; i < ArraySize(commandOptions); ++i)
{
if (tokens[optionNameIndex].contents.compare(commandOptions[i].optionName) == 0)
{
return commandOptions[i].handler(environment, tokens, startTokenIndex,
commandOptions[i].command);
}
}
ErrorAtToken(tokens[optionNameIndex], "unrecognized option");
return false;
}
bool AddCompileTimeHookGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("add-compile-time-hook", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
// Without "-module", the hook is executed at environment-level
bool isModuleHook =
tokens[startTokenIndex + 1].contents.compare("add-compile-time-hook-module") == 0;
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int hookNameIndex =
getExpectedArgument("expected hook name", tokens, startTokenIndex, 1, endInvocationIndex);
if (hookNameIndex == -1 ||
!ExpectTokenType("compile-time hook", tokens[hookNameIndex], TokenType_Symbol))
return false;
int functionNameIndex = getExpectedArgument("expected function name", tokens, startTokenIndex,
2, endInvocationIndex);
if (functionNameIndex == -1 ||
!ExpectTokenType("compile-time hook", tokens[functionNameIndex], TokenType_Symbol))
return false;
int userPriority = 0;
int priorityIndex = getArgument(tokens, startTokenIndex, 3, endInvocationIndex);
if (priorityIndex != -1)
{
bool isPriorityIncrease = tokens[priorityIndex].contents.compare(":priority-increase") == 0;
bool isPriorityDecrease = !isPriorityIncrease &&
tokens[priorityIndex].contents.compare(":priority-decrease") == 0;
if (!isPriorityIncrease && !isPriorityDecrease)
{
ErrorAtToken(tokens[priorityIndex],
"expected optional :priority-decrease or :priority-increase keyword, got "
"unknown symbol");
return false;
}
int priorityValueIndex = getExpectedArgument("expected integer priority", tokens,
startTokenIndex, 4, endInvocationIndex);
if (priorityValueIndex == -1 ||
!ExpectTokenType("compile-time hook priority", tokens[priorityValueIndex],
TokenType_Symbol))
return false;
userPriority = atoi(tokens[priorityValueIndex].contents.c_str());
if (userPriority < 0)
{
ErrorAtTokenf(tokens[priorityValueIndex],
"only positive integers are allowed. If you want to decrease priority, "
"use :priority-decrease %d instead",
userPriority);
return false;
}
if (isPriorityDecrease)
userPriority = -userPriority;
}
void* hookFunction =
findCompileTimeFunction(environment, tokens[functionNameIndex].contents.c_str());
if (hookFunction)
{
const Token& hookName = tokens[hookNameIndex];
if (isModuleHook && hookName.contents.compare("pre-build") == 0)
{
if (!context.module)
{
ErrorAtToken(
tokens[startTokenIndex],
"context doesn't provide module to override hook. Internal code error?");
return false;
}
return AddCompileTimeHook(environment, &context.module->preBuildHooks,
g_modulePreBuildHookSignature,
tokens[functionNameIndex].contents.c_str(), hookFunction,
userPriority, &tokens[functionNameIndex]);
}
if (!isModuleHook && hookName.contents.compare("pre-link") == 0)
{
return AddCompileTimeHook(environment, &environment.preLinkHooks,
g_environmentPreLinkHookSignature,
tokens[functionNameIndex].contents.c_str(), hookFunction,
userPriority, &tokens[functionNameIndex]);
}
if (!isModuleHook && hookName.contents.compare("post-references-resolved") == 0)
{
return AddCompileTimeHook(environment, &environment.postReferencesResolvedHooks,
g_environmentPostReferencesResolvedHookSignature,
tokens[functionNameIndex].contents.c_str(), hookFunction,
userPriority, &tokens[functionNameIndex]);
}
}
else
{
// Waiting on definition or building of this compile-time function
ObjectReference newReference = {};
newReference.type = ObjectReferenceResolutionType_Splice;
newReference.tokens = &tokens;
// Unlike function references, we want to reevaluate from the start of add-hook
newReference.startIndex = startTokenIndex;
newReference.context = context;
// We don't need to splice, we need to set the variable. Create it anyways
newReference.spliceOutput = new GeneratorOutput;
const ObjectReferenceStatus* referenceStatus =
addObjectReference(environment, tokens[functionNameIndex], newReference);
if (!referenceStatus)
{
ErrorAtToken(tokens[functionNameIndex],
"failed to create reference status (internal error)");
return false;
}
// Succeed only because we know the resolver will come back to us
return true;
}
ErrorAtToken(tokens[hookNameIndex],
"failed to set hook. Hook name not recognized or context mismatched. Available "
"hooks:\n\tpre-build (module only)\n\tpre-link\n\tpost-references-resolved\n");
return false;
}
bool AddStringOptionsGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("add string option", tokens[startTokenIndex], context,
EvaluatorScope_Module))
{
NoteAtToken(
tokens[startTokenIndex],
"if you are trying to set an option conditionally from within a comptime function, you "
"should directly set the option rather than using this generator");
return false;
}
const Token& invocationToken = tokens[startTokenIndex + 1];
struct StringOptionList
{
const char* name;
std::vector<std::string>* stringList;
};
const StringOptionList possibleDestinations[] = {
{"add-cakelisp-search-directory", &environment.searchPaths},
{"add-c-search-directory-global", &environment.cSearchDirectories},
{"add-c-search-directory-module", &context.module->cSearchDirectories},
{"add-library-search-directory", &context.module->librarySearchDirectories},
{"add-library-runtime-search-directory", &context.module->libraryRuntimeSearchDirectories},
{"add-library-dependency", &context.module->libraryDependencies},
{"add-compiler-link-options", &context.module->compilerLinkOptions},
{"add-linker-options", &context.module->toLinkerOptions},
{"add-static-link-objects", &environment.additionalStaticLinkObjects},
{"add-build-options", &context.module->additionalBuildOptions},
{"add-build-options-global", &environment.compilerAdditionalOptions},
{"add-build-config-label", &environment.buildConfigurationLabels}};
const StringOptionList* destination = nullptr;
for (unsigned int i = 0; i < ArraySize(possibleDestinations); ++i)
{
if (invocationToken.contents.compare(possibleDestinations[i].name) == 0)
{
destination = &possibleDestinations[i];
break;
}
}
if (!destination)
{
ErrorAtToken(invocationToken,
"unrecognized string option destination. Available destinations:");
for (unsigned int i = 0; i < ArraySize(possibleDestinations); ++i)
Logf("\t%s\n", possibleDestinations[i].name);
return false;
}
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int startStringsIndex =
getExpectedArgument("expected string(s)", tokens, startTokenIndex, 1, endInvocationIndex);
if (startStringsIndex == -1)
return false;
for (int i = startStringsIndex; i < endInvocationIndex;
i = getNextArgument(tokens, i, endInvocationIndex))
{
const Token& currentToken = tokens[i];
if (!ExpectTokenType("add string options", currentToken, TokenType_String))
return false;
bool found = false;
for (const std::string& existingValue : *destination->stringList)
{
if (currentToken.contents.compare(existingValue) == 0)
{
found = true;
break;
}
}
if (!found)
{
destination->stringList->push_back(currentToken.contents);
if (logging.optionAdding)
NoteAtTokenf(currentToken, "added option %s (%s)", currentToken.contents.c_str(),
destination->name);
}
}
return true;
}
// Only adds additional validation before AddStringOptionsGenerator()
bool AddBuildConfigLabelGenerator(EvaluatorEnvironment& environment,
const EvaluatorContext& context, const std::vector<Token>& tokens,
int startTokenIndex, GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("add-build-config-label", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
if (environment.buildConfigurationLabelsAreFinal)
{
ErrorAtToken(tokens[startTokenIndex],
"build configuration labels are finalized. No changes are accepted because "
"output is already being written");
return false;
}
return AddStringOptionsGenerator(environment, context, tokens, startTokenIndex, output);
}
bool SkipBuildGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("skip-build", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
if (context.module)
context.module->skipBuild = true;
else
{
ErrorAtToken(tokens[startTokenIndex], "building not supported (internal code error?)");
return false;
}
return true;
}
// Allows users to rename built-in generators, making it possible to then define macros or
// generators as replacements.
bool RenameBuiltinGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int nameIndex = getExpectedArgument("expected built-in name", tokens, startTokenIndex, 1,
endInvocationIndex);
if (nameIndex == -1)
return false;
int newNameIndex = getExpectedArgument("expected new name for builtin", tokens, startTokenIndex,
2, endInvocationIndex);
if (newNameIndex == -1)
return false;
if (!ExpectTokenType("rename-builtin", tokens[nameIndex], TokenType_String) ||
!ExpectTokenType("rename-builtin", tokens[newNameIndex], TokenType_String))
return false;
// Don't re-rename it; it might be a user's function at this point
GeneratorIterator findRenamedIt =
environment.renamedGenerators.find(tokens[nameIndex].contents);
bool alreadyRenamed = findRenamedIt != environment.renamedGenerators.end();
if (alreadyRenamed)
return true;
GeneratorIterator findIt = environment.generators.find(tokens[nameIndex].contents);
if (findIt == environment.generators.end())
{
if (!alreadyRenamed)
{
ErrorAtToken(tokens[nameIndex], "built-in generator not found");
return false;
}
// Already renamed
return true;
}
// TODO: Go back and reevaluate all places where the old version was used?
GeneratorLastReferenceTableIterator findReferenceIt =
environment.lastGeneratorReferences.find(tokens[nameIndex].contents);
if (findReferenceIt != environment.lastGeneratorReferences.end())
{
ErrorAtToken(*findReferenceIt->second,
"rename-builtin: found reference to generator built-in before it could be "
"renamed. It is expected to rename built-ins before ever referenced, else "
"invocations evaluated before the rename will have different output");
return false;
}
GeneratorFunc generator = findIt->second;
environment.generators.erase(findIt);
environment.generators[tokens[newNameIndex].contents] = generator;
environment.renamedGenerators[tokens[nameIndex].contents] = generator;
return true;
}
enum ImportState
{
WithDefinitions,
WithDeclarations,
CompTimeOnly,
DeclarationsOnly,
// TODO: Remove?
DefinitionsOnly
};
bool ImportGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex, GeneratorOutput& output)
{
if (!ExpectEvaluatorScope("import", tokens[startTokenIndex], context, EvaluatorScope_Module))
return false;
int endTokenIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
// Generators receive the entire invocation. We'll ignore it in this case
int startNameTokenIndex = startTokenIndex;
int endArgsIndex = endTokenIndex;
StripInvocation(startNameTokenIndex, endArgsIndex);
if (!ExpectInInvocation("expected path(s) to modules to import", tokens, startNameTokenIndex,
endTokenIndex))
return false;
// C/C++ imports are "c-import"
bool isCakeImport = tokens[startTokenIndex + 1].contents.compare("import") == 0;
ImportState state = WithDefinitions;
for (int i = startNameTokenIndex; i <= endArgsIndex; ++i)
{
const Token& currentToken = tokens[i];
if (currentToken.type == TokenType_Symbol && isSpecialSymbol(currentToken))
{
if (currentToken.contents.compare("&with-defs") == 0)
state = WithDefinitions;
else if (currentToken.contents.compare("&decls-only") == 0)
{
if (!isCakeImport)
{
ErrorAtToken(currentToken, "&decls-only not supported on C/C++ imports");
return false;
}
state = DeclarationsOnly;
}
else if (currentToken.contents.compare("&defs-only") == 0)
{
if (!isCakeImport)
{
ErrorAtToken(currentToken, "&defs-only not supported on C/C++ imports");
return false;
}
state = DefinitionsOnly;
}
else if (currentToken.contents.compare("&with-decls") == 0)
state = WithDeclarations;
else if (currentToken.contents.compare("&comptime-only") == 0)
{
if (!isCakeImport)
{
ErrorAtToken(currentToken, "&comptime-only not supported on C/C++ imports");
return false;
}
state = CompTimeOnly;
}
else
{
ErrorAtToken(currentToken,
"Unrecognized sentinel symbol. Options "
"are:\n\t&with-defs\n\t&with-decls\n\t&decls-only\n\t&defs-only\n\t&"
"comptime-only\n");
return false;
}
continue;
}
else if (!ExpectTokenType("import file", currentToken, TokenType_String) ||
currentToken.contents.empty())
return false;
Module* importedModule = nullptr;
if (isCakeImport)
{
if (!environment.moduleManager)
{
ErrorAtToken(currentToken,
"importing Cakelisp modules is disabled in this environment");
return false;
}
else
{
if (context.module)
{
ModuleDependency newCakelispDependency = {};
newCakelispDependency.type = ModuleDependency_Cakelisp;
newCakelispDependency.name = currentToken.contents;
context.module->dependencies.push_back(newCakelispDependency);
}
else
{
NoteAtToken(currentToken,
"module cannot track dependency (potential internal error)");
}
char resolvedPathBuffer[MAX_PATH_LENGTH] = {0};
if (!searchForFileInPathsWithError(currentToken.contents.c_str(),
/*encounteredInFile=*/currentToken.source,
environment.searchPaths, resolvedPathBuffer,
ArraySize(resolvedPathBuffer), currentToken))
return false;
// Evaluate the import! Will only evaluate it on first import in this environment
if (!moduleManagerAddEvaluateFile(*environment.moduleManager, resolvedPathBuffer,
&importedModule))
{
ErrorAtToken(currentToken, "failed to import Cakelisp module");
return false;
}
// Either we only want this file for its header or its macros. Don't build it into
// the runtime library/executable
if ((state == DeclarationsOnly || state == CompTimeOnly) && importedModule)
{
// TODO: This won't protect us from a module changing the environment, which may
// not be desired
importedModule->skipBuild = true;
}
}
}
// Comptime only means no includes in the generated file
bool shouldIncludeHeader = state != CompTimeOnly && state != DefinitionsOnly;
if (shouldIncludeHeader)
{
std::vector<StringOutput>& outputDestination =
state == WithDefinitions ? output.source : output.header;
// #include <stdio.h> is passed in as "<stdio.h>", so we need a special case (no quotes)
if (currentToken.contents[0] == '<')
{
addStringOutput(outputDestination, "#include", StringOutMod_SpaceAfter,
¤tToken);
addStringOutput(outputDestination, currentToken.contents, StringOutMod_None,
¤tToken);
addLangTokenOutput(outputDestination, StringOutMod_NewlineAfter, ¤tToken);
}
else
{
if (isCakeImport)
{
// Defer the import until we know what language requirements it has and whether
// it even needs to be imported (e.g., whether it's all macros, so it would
// generate no runtime header)
CakelispDeferredImport newCakelispImport;
newCakelispImport.fileToImportToken = ¤tToken;
// TODO: Should be an easy add for outputting to both
newCakelispImport.outputTo = state == WithDeclarations ?
CakelispImportOutput_Header :
CakelispImportOutput_Source;
newCakelispImport.spliceOutput = new GeneratorOutput;
newCakelispImport.importedModule = importedModule;
addSpliceOutput(output, newCakelispImport.spliceOutput, ¤tToken);
context.module->cakelispImports.push_back(newCakelispImport);
}
else
{
addStringOutput(outputDestination, "#include", StringOutMod_SpaceAfter,
¤tToken);
addStringOutput(outputDestination, currentToken.contents,
StringOutMod_SurroundWithQuotes, ¤tToken);
addLangTokenOutput(outputDestination, StringOutMod_NewlineAfter, ¤tToken);
}
}
}
// Evaluate the import's exports in the current context (the importer module)
if (importedModule)
{
// We have imported the file. Prevent new exports being created to simplify things
importedModule->exportScopesLocked = true;
for (ModuleExportScope& exportScope : importedModule->exportScopes)
{
// Already processed this export. Is this even necessary?
if (exportScope.modulesEvaluatedExport.find(context.module->filename) !=
exportScope.modulesEvaluatedExport.end())
continue;
int startEvalateTokenIndex =
exportScope.startTokenIndex + EXPORT_SCOPE_START_EVAL_OFFSET;
EvaluatorContext exportModuleContext = context;
int numErrors = EvaluateGenerateAll_Recursive(environment, exportModuleContext,
*exportScope.tokens,
startEvalateTokenIndex, output);
if (numErrors)
{
NoteAtToken((*exportScope.tokens)[exportScope.startTokenIndex],
"while evaluating export");
NoteAtToken(tokens[startTokenIndex], "export came from this import");
return false;
}
exportScope.modulesEvaluatedExport[context.module->filename] = 1;
}
}
output.imports.push_back({currentToken.contents,
isCakeImport ? ImportLanguage_Cakelisp : ImportLanguage_C,
¤tToken});
}
return true;
}
bool AddDependencyGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex,
GeneratorOutput& output)
{
// Don't let the user think this function can be called during comptime
if (!ExpectEvaluatorScope("add-c/cpp-build-dependency", tokens[startTokenIndex], context,
EvaluatorScope_Module))
return false;
if (!context.module)
{
ErrorAtToken(tokens[startTokenIndex],
"module cannot track dependency (potential internal error)");
return false;
}
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int firstNameIndex = getExpectedArgument("expected dependency name", tokens, startTokenIndex, 1,
endInvocationIndex);
if (firstNameIndex == -1)
return false;
for (int i = firstNameIndex; i < endInvocationIndex;
i = getNextArgument(tokens, i, endInvocationIndex))
{
const Token& currentDependencyName = tokens[i];
if (!ExpectTokenType("add dependency", currentDependencyName, TokenType_String))
return false;
ModuleDependency newDependency = {};
newDependency.type = ModuleDependency_CFile;
// The full name will be resolved at build time
newDependency.name = currentDependencyName.contents;
newDependency.blameToken = ¤tDependencyName;
context.module->dependencies.push_back(newDependency);
}
return true;
}
bool CPreprocessorDefineGenerator(EvaluatorEnvironment& environment,
const EvaluatorContext& context, const std::vector<Token>& tokens,
int startTokenIndex, GeneratorOutput& output)
{
if (IsForbiddenEvaluatorScope("c-preprocessor-define", tokens[startTokenIndex], context,
EvaluatorScope_ExpressionsOnly))
return false;
int endInvocationIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int defineNameIndex =
getExpectedArgument("define-name", tokens, startTokenIndex, 1, endInvocationIndex);
if (-1 == defineNameIndex)
return false;
if (!ExpectTokenType("define-name", tokens[defineNameIndex], TokenType_Symbol))
return false;
const Token* defineName = &tokens[defineNameIndex];
int valueIndex = getArgument(tokens, startTokenIndex, 2, endInvocationIndex);
const Token* value = valueIndex != -1 ? &tokens[valueIndex] : nullptr;
bool isGlobal =
tokens[startTokenIndex + 1].contents.compare("c-preprocessor-define-global") == 0;
std::vector<StringOutput>& outputDest = isGlobal ? output.header : output.source;
if (value)
{
addStringOutput(outputDest, "#define", StringOutMod_SpaceAfter, &tokens[startTokenIndex]);
addStringOutput(outputDest, defineName->contents, StringOutMod_SpaceAfter, defineName);
if (value->type == TokenType_String)
addStringOutput(outputDest, value->contents,
(StringOutputModifierFlags)(StringOutMod_NewlineAfter |
StringOutMod_SurroundWithQuotes),
value);
else
addStringOutput(outputDest, value->contents, StringOutMod_NewlineAfter, value);
}
else
{
addStringOutput(outputDest, "#define", StringOutMod_SpaceAfter, &tokens[startTokenIndex]);
addStringOutput(outputDest, defineName->contents, StringOutMod_NewlineAfter, defineName);
}
return true;
}
bool DefunGenerator(EvaluatorEnvironment& environment, const EvaluatorContext& context,
const std::vector<Token>& tokens, int startTokenIndex, GeneratorOutput& output)
{
if (!ExpectEvaluatorScope("defun", tokens[startTokenIndex], context, EvaluatorScope_Module))
return false;
int endInvocationTokenIndex = FindCloseParenTokenIndex(tokens, startTokenIndex);
int endTokenIndex = endInvocationTokenIndex;
int startNameTokenIndex = startTokenIndex;
StripInvocation(startNameTokenIndex, endTokenIndex);
int nameIndex = startNameTokenIndex;
const Token& nameToken = tokens[nameIndex];
if (!ExpectTokenType("defun", nameToken, TokenType_Symbol))
return false;
int argsIndex = nameIndex + 1;
if (!ExpectInInvocation("defun expected arguments", tokens, argsIndex, endInvocationTokenIndex))
return false;
const Token& argsStart = tokens[argsIndex];
if (!ExpectTokenType("defun", argsStart, TokenType_OpenParen))
return false;
bool isModuleLocal = tokens[startTokenIndex + 1].contents.compare("defun-local") == 0;
bool isNoDeclare = tokens[startTokenIndex + 1].contents.compare("defun-nodecl") == 0;
bool shouldDeclare = !isModuleLocal && !isNoDeclare;
// Note that macros and generators have their own generators, so we don't handle them here
bool isCompileTime = tokens[startTokenIndex + 1].contents.compare("defun-comptime") == 0;
// In order to support function definition modification, even runtime functions must have
// spliced output, because we might be completely changing the definition
GeneratorOutput* functionOutput = new GeneratorOutput;
// Register definition before evaluating body, otherwise references in body will be orphaned
{
ObjectDefinition newFunctionDef = {};
newFunctionDef.definitionInvocation = &tokens[startTokenIndex];
newFunctionDef.name = nameToken.contents.c_str();
newFunctionDef.type = isCompileTime ? ObjectType_CompileTimeFunction : ObjectType_Function;
// Compile-time objects only get built with compile-time references
newFunctionDef.isRequired = isCompileTime ? false : context.isRequired;
newFunctionDef.context = context;
newFunctionDef.output = functionOutput;
if (!addObjectDefinition(environment, newFunctionDef))
{
delete functionOutput;
return false;
}
// Past this point, compile-time output will be handled by environment destruction
// Regardless of how much the definition is modified, it will still be output at this place
// in the module's generated file. Compile-time functions don't splice into module because
// they shouldn't be included in runtime code
if (!isCompileTime)
addSpliceOutput(output, functionOutput, &tokens[startTokenIndex]);
if (isCompileTime)
{
CompileTimeFunctionMetadata newMetadata = {};
newMetadata.nameToken = &nameToken;
newMetadata.startArgsToken = &argsStart;
environment.compileTimeFunctionInfo[nameToken.contents.c_str()] = newMetadata;
}
}