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- minor corrections to go_spec.txt

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- verified that all text from go_lang.txt is either present in its
  old form, or that we have corresponding updated sections for it
- delete go_lang.txt

R=r
DELTA=2389  (38 added, 2344 deleted, 7 changed)
OCL=14760
CL=14762
This commit is contained in:
Robert Griesemer 2008-09-03 15:15:51 -07:00
parent 182f91ffe0
commit 7a4ed4f8c4
2 changed files with 44 additions and 2350 deletions
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2343
doc/go_lang.txt
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51
doc/go_spec.txt
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@ -191,6 +191,8 @@ type, a function, etc.
ThisIsVariable9
αβ
Some identifiers are predeclared (see Declarations).
Numeric literals
----
@ -1068,15 +1070,15 @@ Expressions
Operands
----
Operand = QualifiedIdent | Literal | "(" Expression ")" | "iota" .
Operand = Literal | QualifiedIdent | "(" Expression ")" .
Literal = int_lit | float_lit | char_lit | string_lit | CompositeLit | FunctionLit .
Iota
----
Within a declaration, the reserved word "iota" represents successive
elements of an integer sequence.
Within a declaration, the predeclared operand "iota"
represents successive elements of an integer sequence.
It is reset to zero whenever the reserved word "const"
introduces a new declaration and increments as each identifier
is declared. For instance, "iota" can be used to construct
@ -1157,7 +1159,7 @@ complicates the spec needlessly.)
TODO(gri): These are not conversions and we could use {} instead of () in
the syntax. This will make literals such as Foo(1, 2, 3) clearly stand
out from function calls.
out from function calls. TBD.
Function Literals
@ -1248,6 +1250,8 @@ would have no effect on ``a''.
Type guards
----
TODO: write this section
Calls
----
@ -1354,10 +1358,14 @@ elements.
Comparison operators
----
TODO: write this section
Logical operators
----
TODO: write this section
Address operators
----
@ -1985,13 +1993,17 @@ after the declaration of the receiver type and may be forward-declared.
Predeclared functions
----
assert (suggested by gri)
cap
convert
len
new
panic
print
typeof
TODO: (gri) suggests that we should consider assert() as a built-in function.
It is like panic, but takes a guard as first argument.
Conversions
@ -2201,7 +2213,7 @@ to the current package. After
the contents are accessible by sin and cos. In this instance, it is
an error if the import introduces name conflicts.
Here is a complete example Go program that implements a concurrent prime sieve:
Here is a complete example Go package that implements a concurrent prime sieve:
package main
@ -2299,7 +2311,7 @@ default for the function name main.main?
----
----
AS OF YET UNUSED LANGUAGE
UNUSED PARTS OF OLD DOCUMENT go_lang.txt - KEEP AROUND UNTIL NOT NEEDED ANYMORE
----
Guiding principles
@ -2577,6 +2589,31 @@ TODO: if interfaces were explicitly pointers, this gets simpler.
END]
Expressions
----
Expression syntax is based on that of C but with fewer precedence levels.
Expression = BinaryExpr | UnaryExpr | PrimaryExpr .
BinaryExpr = Expression binary_op Expression .
UnaryExpr = unary_op Expression .
PrimaryExpr =
identifier | Literal | "(" Expression ")" | "iota" |
Call | Conversion | Allocation | Index |
Expression "." identifier | Expression "." "(" Type ")" .
Call = Expression "(" [ ExpressionList ] ")" .
Conversion =
"convert" "(" Type [ "," ExpressionList ] ")" | ConversionType "(" [ ExpressionList ] ")" .
ConversionType = TypeName | ArrayType | MapType | StructType | InterfaceType .
Allocation = "new" "(" Type [ "," ExpressionList ] ")" .
Index = SimpleIndex | Slice .
SimpleIndex = Expression "[" Expression"]" .
Slice = Expression "[" Expression ":" Expression "]" .
TODO
----