v0.47.0

Most relevant commits:

all

• all: require 1.16 as minimum Go version
• all: make 'compiler' package internal
• all: make 'runtime' package internal
• all: rename the 'types' package to 'native' and move some type into it

ast

• scriggo/ast: fix and improve documentation

cmd/scriggo

• cmd/scriggo: don't prefix error message with 'scriggo: '
• cmd/scriggo: rename the 'run.Scriggofile' file to 'Scriggofile'
• cmd/scriggo: use 'native' instead of 'predefined' in help
• cmd/scriggo: better document struct type limitations

compiler

• compiler/checker: consistently use the same error for redeclared names
• compiler/checker: fix unreported errors in type switch
• compiler: allow special case of call for 'print' and 'println'
• compiler/checker: add support for blank return parameters
• compiler/checker: fix imported and not used error enabling package cache
• compiler/emitter: fix position for dummy functions
• compiler/checker: fix a panic checking an invalid function call
• compiler/checker: fix a panic checking explicit conversion to interface
• compiler/checker: fix constant conversion from string to slice
• compiler/types: revise 'AssignableTo', 'ConvertibleTo' and 'Implements'
• compiler/checker: fix variadic call to 'append'
• compiler/lexer: fix parsing general comments
• compiler/lexer: disallow BOM if it is not the first Unicode code point
• compiler/checker: fix break sets too many statements to terminating
• compiler/checker: fix 'break' and 'continue' not in breakable statement
• compiler/parser: allow to omit a semicolon before a closing %%}
• compiler/parser: fix parsing empty label statements
• compiler/parser: support modules parsing programs
• compiler/checker: fix label, goto, break and continue statements
• compiler/checker: differentiate error messages in type declaration loops
• compiler/disassembler: fix panic disassembling 'Select' operation
• compiler/types: fix creation of defined types
• compiler/checker: add missing builtins to 'go' and 'defer' statements
• compiler/parser: fix error message if identifier name starts with digit
• compiler/parser: return better error message on interfaces with methods
• compiler/parser: fix automatically inserted semicolon
• compiler/parser: fix error message on unexpected token after 'else'
• compiler/emitter: call 'types.PtrTo' instead of 'reflect.PtrTo'
• compiler/checker: fix very slow printing of float constants
• compiler/checker: fix 'duplicate field _' error
• compiler/checker: fix checking of struct fields
• compiler/checker: don't panic is not first embedded type has methods
• compiler/types: implement 'structType.FieldByIndex' method
• compiler/checker: fix implicit assignment of unexported fields
• compiler/checker: rewrite checking of composite struct literal
• compiler/emitter: fix slicing
• compiler/emitter: fix invalid behavior in assignment
• compiler/checker: fix ambiguous selector error
• compiler/checker: fix corner cases in field selector

native

• native: make 'MapPackage' methods with pointer receivers
• native: make 'PackageLoader.Load' method returns only native packages
• native: rename the 'MapPackage' type to 'DeclarationsPackage'
• native, runtime: remove 'Exited' and 'ExitFunc' methods of 'Env'
• native: document that 'Exit' and 'Fatal' do not terminate goroutines

playground

• playground: remove 'wasm_exec.js' file and document how to copy the file
• playground: use '-v -o' to generate 'packages.go' in README
• playground: remove 'packages.go' from the repository

runtime

• runtime: fix error returned deleting a map key with an unhashable type

scriggo

• scriggo: change 'Build' function to get a file system
• scriggo, templates: merge 'templates' package into the 'scriggo' package
• scriggo: remove the 'PrintFunc' function
• scriggo: rename 'RunOptions.PrintFuc' to 'Print'
• scriggo, scripts: rename 'Panic' types to 'PanicError'
• scriggo, scripts: make 'Run' methods return an ExitError instead of code
• scriggo: merge 'BuildTemplateOptions' into 'BuildOptions'
• scriggo, scripts: make 'go' statement disabled by default

scripts

• scripts: document that scripts are experimental
• scripts: replace 'reflect.PrintFunc' type with 'scriggo.PrintFunc' type
• scripts: rename 'RunOptions.PrintFunc' to 'Print'
• scripts: improve documentation