1 files changed, 102 insertions, 0 deletions
diff --git a/mesonbuild/interpreterbase.py b/mesonbuild/interpreterbase.py
index 7e732be..4268597 100644
--- a/mesonbuild/interpreterbase.py
+++ b/mesonbuild/interpreterbase.py
@@ -19,6 +19,42 @@ from . import mparser, mesonlib, mlog
 from . import environment, dependencies
 
 import os, copy, re
+from functools import wraps
+
+# Decorators for method calls.
+
+def check_stringlist(a, msg='Arguments must be strings.'):
+    if not isinstance(a, list):
+        mlog.debug('Not a list:', str(a))
+        raise InvalidArguments('Argument not a list.')
+    if not all(isinstance(s, str) for s in a):
+        mlog.debug('Element not a string:', str(a))
+        raise InvalidArguments(msg)
+
+def noPosargs(f):
+    @wraps(f)
+    def wrapped(self, node, args, kwargs):
+        if len(args) != 0:
+            raise InvalidArguments('Function does not take positional arguments.')
+        return f(self, node, args, kwargs)
+    return wrapped
+
+def noKwargs(f):
+    @wraps(f)
+    def wrapped(self, node, args, kwargs):
+        if len(kwargs) != 0:
+            raise InvalidArguments('Function does not take keyword arguments.')
+        return f(self, node, args, kwargs)
+    return wrapped
+
+def stringArgs(f):
+    @wraps(f)
+    def wrapped(self, node, args, kwargs):
+        assert(isinstance(args, list))
+        check_stringlist(args)
+        return f(self, node, args, kwargs)
+    return wrapped
+
 
 class InterpreterException(mesonlib.MesonException):
     pass
@@ -159,6 +195,26 @@ class InterpreterBase:
             raise InvalidCode('Keyword arguments are invalid in array construction.')
         return arguments
 
+    def evaluate_notstatement(self, cur):
+        v = self.evaluate_statement(cur.value)
+        if isinstance(v, mparser.BooleanNode):
+            v = v.value
+        if not isinstance(v, bool):
+            raise InterpreterException('Argument to "not" is not a boolean.')
+        return not v
+
+
+    def evaluate_if(self, node):
+        assert(isinstance(node, mparser.IfClauseNode))
+        for i in node.ifs:
+            result = self.evaluate_statement(i.condition)
+            if not(isinstance(result, bool)):
+                raise InvalidCode('If clause {!r} does not evaluate to true or false.'.format(result))
+            if result:
+                self.evaluate_codeblock(i.block)
+                return
+        if not isinstance(node.elseblock, mparser.EmptyNode):
+            self.evaluate_codeblock(node.elseblock)
 
     def function_call(self, node):
         func_name = node.func_name
@@ -247,3 +303,49 @@ class InterpreterBase:
         return isinstance(value, (InterpreterObject, dependencies.Dependency,
                                   str, int, list, mesonlib.File))
 
+    def func_build_target(self, node, args, kwargs):
+        if 'target_type' not in kwargs:
+            raise InterpreterException('Missing target_type keyword argument')
+        target_type = kwargs.pop('target_type')
+        if target_type == 'executable':
+            return self.func_executable(node, args, kwargs)
+        elif target_type == 'shared_library':
+            return self.func_shared_lib(node, args, kwargs)
+        elif target_type == 'static_library':
+            return self.func_static_lib(node, args, kwargs)
+        elif target_type == 'library':
+            return self.func_library(node, args, kwargs)
+        elif target_type == 'jar':
+            return self.func_jar(node, args, kwargs)
+        else:
+            raise InterpreterException('Unknown target_type.')
+
+    def func_set_variable(self, node, args, kwargs):
+        if len(args) != 2:
+            raise InvalidCode('Set_variable takes two arguments.')
+        varname = args[0]
+        value = self.to_native(args[1])
+        self.set_variable(varname, value)
+
+#    @noKwargs
+    def func_get_variable(self, node, args, kwargs):
+        if len(args)<1 or len(args)>2:
+            raise InvalidCode('Get_variable takes one or two arguments.')
+        varname = args[0]
+        if not isinstance(varname, str):
+            raise InterpreterException('First argument must be a string.')
+        try:
+            return self.variables[varname]
+        except KeyError:
+            pass
+        if len(args) == 2:
+            return args[1]
+        raise InterpreterException('Tried to get unknown variable "%s".' % varname)
+
+    @stringArgs
+    @noKwargs
+    def func_is_variable(self, node, args, kwargs):
+        if len(args) != 1:
+            raise InvalidCode('Is_variable takes two arguments.')
+        varname = args[0]
+        return varname in self.variables