144 lines
5.1 KiB
C++
144 lines
5.1 KiB
C++
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "tools/gn/err.h"
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#include "tools/gn/functions.h"
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#include "tools/gn/parse_tree.h"
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#include "tools/gn/scheduler.h"
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#include "tools/gn/scope.h"
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#include "tools/gn/settings.h"
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#include "tools/gn/toolchain.h"
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namespace functions {
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namespace {
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// This is jsut a unique value to take the address of to use as the key for
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// the toolchain property on a scope.
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const int kToolchainPropertyKey = 0;
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// Reads the given string from the scope (if present) and puts the result into
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// dest. If the value is not a string, sets the error and returns false.
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bool ReadString(Scope& scope, const char* var, std::string* dest, Err* err) {
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const Value* v = scope.GetValue(var, true);
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if (!v)
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return true; // Not present is fine.
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if (!v->VerifyTypeIs(Value::STRING, err))
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return false;
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*dest = v->string_value();
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return true;
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}
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} // namespace
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// toolchain -------------------------------------------------------------------
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const char kToolchain[] = "toolchain";
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const char kToolchain_Help[] =
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"TODO(brettw) write this.";
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Value RunToolchain(Scope* scope,
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const FunctionCallNode* function,
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const std::vector<Value>& args,
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BlockNode* block,
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Err* err) {
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if (!EnsureNotProcessingImport(function, scope, err) ||
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!EnsureNotProcessingBuildConfig(function, scope, err))
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return Value();
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// Note that we don't want to use MakeLabelForScope since that will include
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// the toolchain name in the label, and toolchain labels don't themselves
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// have toolchain names.
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const SourceDir& input_dir = SourceDirForFunctionCall(function);
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Label label(input_dir, args[0].string_value(), SourceDir(), std::string());
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if (g_scheduler->verbose_logging())
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g_scheduler->Log("Generating toolchain", label.GetUserVisibleName(false));
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// This object will actually be copied into the one owned by the toolchain
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// manager, but that has to be done in the lock.
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Toolchain toolchain(label);
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Scope block_scope(scope);
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block_scope.SetProperty(&kToolchainPropertyKey, &toolchain);
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block->ExecuteBlockInScope(&block_scope, err);
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block_scope.SetProperty(&kToolchainPropertyKey, NULL);
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if (err->has_error())
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return Value();
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if (!block_scope.CheckForUnusedVars(err))
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return Value();
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const BuildSettings* build_settings = scope->settings()->build_settings();
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{
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// Save the toolchain definition in the toolchain manager and mark the
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// corresponding item in the dependency tree resolved so that targets
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// that depend on this toolchain know it's ready.
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base::AutoLock lock(build_settings->item_tree().lock());
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build_settings->toolchain_manager().SetToolchainDefinitionLocked(
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toolchain, function->GetRange(), err);
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build_settings->item_tree().MarkItemDefinedLocked(build_settings, label,
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err);
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}
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return Value();
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}
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// tool ------------------------------------------------------------------------
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const char kTool[] = "tool";
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const char kTool_Help[] =
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"TODO(brettw) write this.";
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Value RunTool(Scope* scope,
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const FunctionCallNode* function,
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const std::vector<Value>& args,
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BlockNode* block,
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Err* err) {
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// Find the toolchain definition we're executing inside of. The toolchain
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// function will set a property pointing to it that we'll pick up.
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Toolchain* toolchain = reinterpret_cast<Toolchain*>(
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scope->GetProperty(&kToolchainPropertyKey, NULL));
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if (!toolchain) {
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*err = Err(function->function(), "tool() called outside of toolchain().",
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"The tool() function can only be used inside a toolchain() "
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"definition.");
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return Value();
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}
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if (!EnsureSingleStringArg(function, args, err))
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return Value();
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const std::string& tool_name = args[0].string_value();
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Toolchain::ToolType tool_type = Toolchain::ToolNameToType(tool_name);
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if (tool_type == Toolchain::TYPE_NONE) {
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*err = Err(args[0], "Unknown tool type");
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return Value();
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}
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// Run the tool block.
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Scope block_scope(scope);
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block->ExecuteBlockInScope(&block_scope, err);
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if (err->has_error())
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return Value();
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// Extract the stuff we need.
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Toolchain::Tool t;
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if (!ReadString(block_scope, "command", &t.command, err) ||
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!ReadString(block_scope, "depfile", &t.depfile, err) ||
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!ReadString(block_scope, "deps", &t.deps, err) ||
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!ReadString(block_scope, "description", &t.description, err) ||
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!ReadString(block_scope, "pool", &t.pool, err) ||
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!ReadString(block_scope, "restat", &t.restat, err) ||
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!ReadString(block_scope, "rspfile", &t.rspfile, err) ||
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!ReadString(block_scope, "rspfile_content", &t.rspfile_content, err))
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return Value();
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// Make sure there weren't any vars set in this tool that were unused.
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if (!block_scope.CheckForUnusedVars(err))
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return Value();
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toolchain->SetTool(tool_type, t);
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return Value();
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}
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} // namespace functions
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