Move the 'data lifetime parameter to the ModuleEnvironment trait.

This is needed to allow implementations to have 'data-lifetime
references if they choose to. The DummyEnvironment is an example of an
implementation that doesn't choose to.

lib/wasm/src/module_translator.rs

@@ -13,7 +13,7 @@ use runtime::ModuleEnvironment;
 /// indexes in the wasm module and the indexes inside each functions.
 pub fn translate_module<'data>(
     data: &'data [u8],
-    environ: &mut ModuleEnvironment,
+    environ: &mut ModuleEnvironment<'data>,
 ) -> Result<(), String> {
     let mut parser = Parser::new(data);
     match *parser.read() {

lib/wasm/src/runtime/dummy.rs

@@ -195,7 +195,7 @@ impl<'dummy_environment> FuncEnvironment for DummyFuncEnvironment<'dummy_environ
     }
 }
 
-impl ModuleEnvironment for DummyEnvironment {
+impl<'data> ModuleEnvironment<'data> for DummyEnvironment {
     fn get_func_name(&self, func_index: FunctionIndex) -> ir::FunctionName {
         get_func_name(func_index)
     }
@@ -208,7 +208,7 @@ impl ModuleEnvironment for DummyEnvironment {
         &self.info.signatures[sig_index]
     }
 
-    fn declare_func_import<'data>(
+    fn declare_func_import(
         &mut self,
         sig_index: SignatureIndex,
         module: &'data str,
@@ -261,7 +261,7 @@ impl ModuleEnvironment for DummyEnvironment {
     fn declare_memory(&mut self, memory: Memory) {
         self.info.memories.push(Exportable::new(memory));
     }
-    fn declare_data_initialization<'data>(
+    fn declare_data_initialization(
         &mut self,
         _memory_index: MemoryIndex,
         _base: Option<GlobalIndex>,
@@ -271,7 +271,7 @@ impl ModuleEnvironment for DummyEnvironment {
         // We do nothing
     }
 
-    fn declare_func_export<'data>(&mut self, func_index: FunctionIndex, name: &'data str) {
+    fn declare_func_export(&mut self, func_index: FunctionIndex, name: &'data str) {
         self.info.functions[func_index].export_names.push(
             String::from(
                 name,
@@ -279,13 +279,13 @@ impl ModuleEnvironment for DummyEnvironment {
         );
     }
 
-    fn declare_table_export<'data>(&mut self, table_index: TableIndex, name: &'data str) {
+    fn declare_table_export(&mut self, table_index: TableIndex, name: &'data str) {
         self.info.tables[table_index].export_names.push(
             String::from(name),
         );
     }
 
-    fn declare_memory_export<'data>(&mut self, memory_index: MemoryIndex, name: &'data str) {
+    fn declare_memory_export(&mut self, memory_index: MemoryIndex, name: &'data str) {
         self.info.memories[memory_index].export_names.push(
             String::from(
                 name,
@@ -293,7 +293,7 @@ impl ModuleEnvironment for DummyEnvironment {
         );
     }
 
-    fn declare_global_export<'data>(&mut self, global_index: GlobalIndex, name: &'data str) {
+    fn declare_global_export(&mut self, global_index: GlobalIndex, name: &'data str) {
         self.info.globals[global_index].export_names.push(
             String::from(
                 name,
@@ -307,7 +307,7 @@ impl ModuleEnvironment for DummyEnvironment {
     }
 
     /// Provides the contents of a function body.
-    fn define_function_body<'data>(&mut self, body_bytes: &'data [u8]) -> Result<(), String> {
+    fn define_function_body(&mut self, body_bytes: &'data [u8]) -> Result<(), String> {
         let function_index = self.get_num_func_imports() + self.info.function_bodies.len();
         let name = get_func_name(function_index);
         let sig = self.get_signature(self.get_func_type(function_index))

lib/wasm/src/runtime/spec.rs

@@ -149,7 +149,7 @@ pub trait FuncEnvironment {
 /// An object satisfyng the `ModuleEnvironment` trait can be passed as argument to the
 /// [`translate_module`](fn.translate_module.html) function. These methods should not be called
 /// by the user, they are only for `cretonne-wasm` internal use.
-pub trait ModuleEnvironment {
+pub trait ModuleEnvironment<'data> {
     /// Return the name for the given function index.
     fn get_func_name(&self, func_index: FunctionIndex) -> ir::FunctionName;
 
@@ -160,7 +160,7 @@ pub trait ModuleEnvironment {
     fn get_signature(&self, sig_index: SignatureIndex) -> &ir::Signature;
 
     /// Declares a function import to the environment.
-    fn declare_func_import<'data>(
+    fn declare_func_import(
         &mut self,
         sig_index: SignatureIndex,
         module: &'data str,
@@ -195,7 +195,7 @@ pub trait ModuleEnvironment {
     /// Declares a memory to the environment
     fn declare_memory(&mut self, memory: Memory);
     /// Fills a declared memory with bytes at module instantiation.
-    fn declare_data_initialization<'data>(
+    fn declare_data_initialization(
         &mut self,
         memory_index: MemoryIndex,
         base: Option<GlobalIndex>,
@@ -204,17 +204,17 @@ pub trait ModuleEnvironment {
     );
 
     /// Declares a function export to the environment.
-    fn declare_func_export<'data>(&mut self, func_index: FunctionIndex, name: &'data str);
+    fn declare_func_export(&mut self, func_index: FunctionIndex, name: &'data str);
     /// Declares a table export to the environment.
-    fn declare_table_export<'data>(&mut self, table_index: TableIndex, name: &'data str);
+    fn declare_table_export(&mut self, table_index: TableIndex, name: &'data str);
     /// Declares a memory export to the environment.
-    fn declare_memory_export<'data>(&mut self, memory_index: MemoryIndex, name: &'data str);
+    fn declare_memory_export(&mut self, memory_index: MemoryIndex, name: &'data str);
     /// Declares a global export to the environment.
-    fn declare_global_export<'data>(&mut self, global_index: GlobalIndex, name: &'data str);
+    fn declare_global_export(&mut self, global_index: GlobalIndex, name: &'data str);
 
     /// Declares a start function.
     fn declare_start_func(&mut self, index: FunctionIndex);
 
     /// Provides the contents of a function body.
-    fn define_function_body<'data>(&mut self, body_bytes: &'data [u8]) -> Result<(), String>;
+    fn define_function_body(&mut self, body_bytes: &'data [u8]) -> Result<(), String>;
 }

lib/wasm/src/sections_translator.rs

@@ -56,9 +56,9 @@ pub fn parse_function_signatures(
 }
 
 /// Retrieves the imports from the imports section of the binary.
-pub fn parse_import_section(
+pub fn parse_import_section<'data>(
-    parser: &mut Parser,
+    parser: &mut Parser<'data>,
-    environ: &mut ModuleEnvironment,
+    environ: &mut ModuleEnvironment<'data>,
 ) -> Result<(), SectionParsingError> {
     loop {
         match *parser.read() {
@@ -128,9 +128,9 @@ pub fn parse_function_section(
 }
 
 /// Retrieves the names of the functions from the export section
-pub fn parse_export_section(
+pub fn parse_export_section<'data>(
-    parser: &mut Parser,
+    parser: &mut Parser<'data>,
-    environ: &mut ModuleEnvironment,
+    environ: &mut ModuleEnvironment<'data>,
 ) -> Result<(), SectionParsingError> {
     loop {
         match *parser.read() {
@@ -246,9 +246,9 @@ pub fn parse_global_section(
     Ok(())
 }
 
-pub fn parse_data_section(
+pub fn parse_data_section<'data>(
-    parser: &mut Parser,
+    parser: &mut Parser<'data>,
-    environ: &mut ModuleEnvironment,
+    environ: &mut ModuleEnvironment<'data>,
 ) -> Result<(), SectionParsingError> {
     loop {
         let memory_index = match *parser.read() {