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Added callable/storable modifiers to grammar

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Still gotta add logic for them in the compiler.
This commit is contained in:
arookas 2016-02-01 01:36:13 -05:00
parent 5fa362cac1
commit b57c70ee9d
5 changed files with 37 additions and 64 deletions
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10
ssc/ast/nodes.functions.cs
View file

@ -3,8 +3,8 @@ using System.Linq;
namespace arookas {
class sunBuiltinDeclaration : sunNode {
public sunIdentifier Builtin { get { return this[0] as sunIdentifier; } }
public sunParameterList Parameters { get { return this[1] as sunParameterList; } }
public sunIdentifier Builtin { get { return this[1] as sunIdentifier; } }
public sunParameterList Parameters { get { return this[2] as sunParameterList; } }
public sunBuiltinDeclaration(sunSourceLocation location)
: base(location) { }
@ -15,9 +15,9 @@ namespace arookas {
}
class sunFunctionDefinition : sunNode {
public sunIdentifier Function { get { return this[0] as sunIdentifier; } }
public sunParameterList Parameters { get { return this[1] as sunParameterList; } }
public sunNode Body { get { return this[2]; } }
public sunIdentifier Function { get { return this[1] as sunIdentifier; } }
public sunParameterList Parameters { get { return this[2] as sunParameterList; } }
public sunNode Body { get { return this[3]; } }
public sunFunctionDefinition(sunSourceLocation location)
: base(location) { }

6
ssc/ast/nodes.keywords.cs Normal file
View file

@ -0,0 +1,6 @@
namespace arookas {
class sunConstKeyword : sunNode {
public sunConstKeyword(sunSourceLocation location)
: base(location) { }
}
}

18
ssc/ast/nodes.variables.cs
View file

@ -22,7 +22,7 @@
}
class sunVariableDeclaration : sunNode {
public sunIdentifier Variable { get { return this[0] as sunIdentifier; } }
public sunIdentifier Variable { get { return this[1] as sunIdentifier; } }
public sunVariableDeclaration(sunSourceLocation location)
: base(location) { }
@ -33,9 +33,9 @@
}
class sunVariableDefinition : sunNode {
public sunIdentifier Variable { get { return this[0] as sunIdentifier; } }
public sunAssign Operator { get { return this[1] as sunAssign; } }
public sunExpression Expression { get { return this[2] as sunExpression; } }
public sunIdentifier Variable { get { return this[1] as sunIdentifier; } }
public sunAssign Operator { get { return this[2] as sunAssign; } }
public sunExpression Expression { get { return this[3] as sunExpression; } }
public sunVariableDefinition(sunSourceLocation location)
: base(location) { }
@ -47,9 +47,9 @@
}
class sunStorableAssignment : sunNode {
public sunIdentifier Storable { get { return this[0] as sunIdentifier; } }
public sunAssign Operator { get { return this[1] as sunAssign; } }
public sunExpression Expression { get { return this[2] as sunExpression; } }
public sunIdentifier Storable { get { return this[1] as sunIdentifier; } }
public sunAssign Operator { get { return this[2] as sunAssign; } }
public sunExpression Expression { get { return this[3] as sunExpression; } }
public sunStorableAssignment(sunSourceLocation location)
: base(location) { }
@ -64,8 +64,8 @@
}
class sunConstantDefinition : sunNode {
public sunIdentifier Constant { get { return this[0] as sunIdentifier; } }
public sunExpression Expression { get { return this[2] as sunExpression; } }
public sunIdentifier Constant { get { return this[1] as sunIdentifier; } }
public sunExpression Expression { get { return this[3] as sunExpression; } }
public sunConstantDefinition(sunSourceLocation location)
: base(location) { }

53
ssc/parser.cs
View file

@ -207,52 +207,15 @@ namespace arookas {
case __sunConstants.BREAK_STATEMENT: return new sunBreak(location);
case __sunConstants.CONTINUE_STATEMENT: return new sunContinue(location);
}
// cleanup keywords punctuation
switch (GetId(node)) {
// keywords
case __sunConstants.IMPORT:
case __sunConstants.BUILTIN:
case __sunConstants.FUNCTION:
case __sunConstants.VAR:
case __sunConstants.CONST:
case __sunConstants.IF:
case __sunConstants.ELSE:
case __sunConstants.DO:
case __sunConstants.WHILE:
case __sunConstants.FOR:
case __sunConstants.RETURN:
case __sunConstants.BREAK:
case __sunConstants.CONTINUE:
case __sunConstants.YIELD:
case __sunConstants.EXIT:
case __sunConstants.LOCK:
case __sunConstants.UNLOCK:
case __sunConstants.INT:
case __sunConstants.FLOAT:
case __sunConstants.TYPEOF:
case __sunConstants.TRUE:
case __sunConstants.FALSE:
// punctuation
case __sunConstants.L_BRACE:
case __sunConstants.R_BRACE:
case __sunConstants.L_PAREN:
case __sunConstants.R_PAREN:
case __sunConstants.L_BRACKET:
case __sunConstants.R_BRACKET:
case __sunConstants.COLON:
case __sunConstants.SEMICOLON:
case __sunConstants.COMMA:
case __sunConstants.DOT:
case __sunConstants.ELLIPSIS:
case __sunConstants.QMARK: {
return null;
// keywords
if (id == __sunConstants.CONST) {
switch (parent) {
case __sunConstants.FUNCTION_MODIFIERS:
case __sunConstants.BUILTIN_MODIFIERS: {
return new sunConstKeyword(location);
}
}
}
// emergency fallback

14
ssc/sunscript.grammar
View file

@ -178,12 +178,14 @@ float_cast = FLOAT L_PAREN expression R_PAREN;
typeof_cast = TYPEOF L_PAREN expression R_PAREN;
// constants
const_definition = CONST IDENTIFIER ASSIGN expression;
const_definition = const_modifiers IDENTIFIER ASSIGN expression;
const_modifiers = [LOCAL] CONST;
// variables
variable_reference = IDENTIFIER; // used in expressions
variable_declaration = VAR IDENTIFIER;
variable_definition = VAR IDENTIFIER ASSIGN expression;
variable_declaration = variable_modifiers IDENTIFIER;
variable_definition = variable_modifiers IDENTIFIER ASSIGN expression;
variable_modifiers = [LOCAL] VAR;
variable_assignment = IDENTIFIER assignment_operator expression;
variable_augment = postfix_augment | prefix_augment;
@ -191,14 +193,16 @@ postfix_augment = IDENTIFIER augment_operator;
prefix_augment = augment_operator IDENTIFIER;
// functions
function_definition = FUNCTION IDENTIFIER parameter_list statement_block;
function_definition = function_modifiers IDENTIFIER parameter_list statement_block;
function_modifiers = [LOCAL] [CONST] FUNCTION;
function_call = IDENTIFIER argument_list;
parameter_list = L_PAREN [IDENTIFIER {COMMA IDENTIFIER} [COMMA ELLIPSIS] | ELLIPSIS] R_PAREN; // e.g. (a, b, ...)
argument_list = L_PAREN [expression {COMMA expression}] R_PAREN;
// builtins
builtin_declaration = BUILTIN IDENTIFIER parameter_list;
builtin_declaration = builtin_modifiers IDENTIFIER parameter_list;
builtin_modifiers = [LOCAL] [CONST] BUILTIN;
// flow control
if_statement = IF expression statement [ELSE statement];